Examples

This example shows how to display the interfaces in the CDP database:

switch# show cdp all
mgmt0 is up
    CDP enabled on interface
    Refresh time is 60 seconds
    Hold time is 180 seconds
Ethernet1/1 is down
    CDP enabled on interface
    Refresh time is 60 seconds
    Hold time is 180 seconds
Ethernet1/2 is down
    CDP enabled on interface
    Refresh time is 60 seconds
    Hold time is 180 seconds
Ethernet1/3 is down
    CDP enabled on interface
    Refresh time is 60 seconds
    Hold time is 180 seconds
Ethernet1/4 is down
    CDP enabled on interface
    Refresh time is 60 seconds
    Hold time is 180 seconds
Ethernet1/5 is down
    CDP enabled on interface
    Refresh time is 60 seconds
    Hold time is 180 seconds
Ethernet1/6 is down
    CDP enabled on interface
    Refresh time is 60 seconds
    Hold time is 180 seconds
<--Output truncated-->
switch# 

Examples

This example shows how to display all the entries in the CDP database:

switch# show cdp entry all
----------------------------------------
Device ID:savbu-qa-dist-120
System Name:
Interface address(es):
    IPv4 Address: 192.168.0.82
Platform: cisco WS-C3750E-24TD, Capabilities: Switch IGMP Filtering
Interface: mgmt0, Port ID (outgoing port): GigabitEthernet1/0/13
Holdtime: 179 sec
Version:
Cisco IOS Software, C3750E Software (C3750E-UNIVERSAL-M), Version 12.2(35)SE5, RELEASE SOFTWARE (fc1)
Copyright (c) 1986-2007 by Cisco Systems, Inc.
Compiled Thu 19-Jul-07 16:17 by nachen
Advertisement Version: 2
Native VLAN: 16
VTP Management Domain:
Duplex: full
Mgmt address(es):
    IPv4 Address: 192.168.0.82
----------------------------------------
Device ID:swor96(SSI13110AAQ)
System Name:swor96
Interface address(es):
    IPv4 Address: 192.168.0.1
Platform: N5K-C5010P-BF, Capabilities: Switch IGMP Filtering Supports-STP-Dispute
Interface: Ethernet1/17, Port ID (outgoing port): Ethernet1/19
Holdtime: 167 sec
Version:
Cisco Nexus Operating System (NX-OS) Software, Version 5.0(3)N2(1)
Advertisement Version: 2
Native VLAN: 1
Duplex: full
Physical Location: snmplocation
Mgmt address(es):
    IPv4 Address: 192.168.0.96
----------------------------------------
Device ID:swor96(SSI13110AAQ)
System Name:swor96
Interface address(es):
    IPv4 Address: 192.168.0.1
Platform: N5K-C5010P-BF, Capabilities: Switch IGMP Filtering Supports-STP-Dispute
Interface: Ethernet1/18, Port ID (outgoing port): Ethernet1/20
Holdtime: 167 sec
Version:
Cisco Nexus Operating System (NX-OS) Software, Version 5.0(3)N2(1)
Advertisement Version: 2
Native VLAN: 1
Duplex: full
Physical Location: snmplocation
Mgmt address(es):
    IPv4 Address: 192.168.0.96
----------------------------------------
Device ID:swor95(SSI13110AAS)
System Name:swor95
Interface address(es):
    IPv4 Address: 192.168.0.95
Platform: N5K-C5010P-BF, Capabilities: Switch IGMP Filtering Supports-STP-Dispute
Interface: Ethernet1/29, Port ID (outgoing port): Ethernet1/19
Holdtime: 173 sec
Version:
Cisco Nexus Operating System (NX-OS) Software, Version 5.0(3)N2(1)
Advertisement Version: 2
Native VLAN: 1
Duplex: full
Physical Location: snmplocation
Mgmt address(es):
    IPv4 Address: 192.168.0.95
switch#

This example shows how to display a specific entry from the CDP database:

switch# show cdp entry name swor95(SSI13110AAS)
----------------------------------------
Device ID:swor95(SSI13110AAS)
System Name:swor95
Interface address(es):
    IPv4 Address: 192.168.0.95
Platform: N5K-C5010P-BF, Capabilities: Switch IGMP Filtering Supports-STP-Dispute
Interface: Ethernet1/29, Port ID (outgoing port): Ethernet1/19
Holdtime: 173 sec
Version:
Cisco Nexus Operating System (NX-OS) Software, Version 5.0(3)N2(1)
Advertisement Version: 2
Native VLAN: 1
Duplex: full
Physical Location: snmplocation
Mgmt address(es):
    IPv4 Address: 192.168.0.95
switch#

Examples

This example shows how to display the CDP global parameters:

switch# show cdp global
Global CDP information:
    CDP enabled globally
    Refresh time is 60 seconds
    Hold time is 180 seconds
    CDPv2 advertisements is enabled
    DeviceID TLV in System-Name(Default) Format
switch#

Examples

This example shows how to display the CDP parameters for an Ethernet interface:

switch# show cdp interface ethernet 1/30
Ethernet1/30 is down
    CDP enabled on interface
    Refresh time is 60 seconds
    Hold time is 180 seconds
switch# 

This example shows how to display the CDP parameters for a management interface:

switch# show cdp interface mgmt 0
mgmt0 is up
    CDP enabled on interface
    Refresh time is 60 seconds
    Hold time is 180 seconds
switch#

Examples

This example shows how to display all CDP neighbors:

switch# show cdp neighbors
Capability Codes: R - Router, T - Trans-Bridge, B - Source-Route-Bridge
                  S - Switch, H - Host, I - IGMP, r - Repeater,
                  V - VoIP-Phone, D - Remotely-Managed-Device,
                  s - Supports-STP-Dispute, M - Two-port Mac Relay
Device ID              Local Intrfce   Hldtme  Capability  Platform      Port ID
savbu-qa-dist-120      mgmt0           177     S I         WS-C3750E-24T Gig1/0/13
swor96(SSI13110AAQ)    Eth1/17         165     S I s       N5K-C5010P-BF Eth1/19
swor96(SSI13110AAQ)    Eth1/18         165     S I s       N5K-C5010P-BF Eth1/20
swor95(SSI13110AAS)    Eth1/29         171     S I s       N5K-C5010P-BF Eth1/19
switch# 

This example shows how to display the CDP neighbors for a specific Ethernet interface:

switch# show cdp neighbors interface ethernet 1/29
Capability Codes: R - Router, T - Trans-Bridge, B - Source-Route-Bridge
                  S - Switch, H - Host, I - IGMP, r - Repeater,
                  V - VoIP-Phone, D - Remotely-Managed-Device,
                  s - Supports-STP-Dispute, M - Two-port Mac Relay
Device ID              Local Intrfce   Hldtme  Capability  Platform      Port ID
swor95(SSI13110AAS)    Eth1/29         146     S I s       N5K-C5010P-BF Eth1/19
switch#

This example shows how to display the detailed information of the CDP neighbors for a specific Ethernet interface:

switch# show cdp neighbors interface ethernet 1/29 detail
----------------------------------------
Device ID:swor95(SSI13110AAS)
System Name:swor95
Interface address(es):
    IPv4 Address: 192.168.0.95
Platform: N5K-C5010P-BF, Capabilities: Switch IGMP Filtering Supports-STP-Disput
e
Interface: Ethernet1/29, Port ID (outgoing port): Ethernet1/19
Holdtime: 141 sec
Version:
Cisco Nexus Operating System (NX-OS) Software, Version 5.0(3)N2(1)
Advertisement Version: 2
Native VLAN: 1
Duplex: full
Physical Location: snmplocation
Mgmt address(es):
    IPv4 Address: 192.168.0.95
switch#

This example shows how to display the CDP neighbors for the management interface:

switch# show cdp neighbors interface mgmt 0
Capability Codes: R - Router, T - Trans-Bridge, B - Source-Route-Bridge
                  S - Switch, H - Host, I - IGMP, r - Repeater,
                  V - VoIP-Phone, D - Remotely-Managed-Device,
                  s - Supports-STP-Dispute, M - Two-port Mac Relay
Device ID              Local Intrfce   Hldtme  Capability  Platform      Port ID
savbu-qa-dist-120      mgmt0           126     S I         WS-C3750E-24T Gig1/0/13
switch#

This example shows how to display the detailed information of the CDP neighbors for the management interface:

switch# show cdp neighbors interface mgmt 0 detail
----------------------------------------
Device ID:savbu-qa-dist-120
System Name:
Interface address(es):
    IPv4 Address: 192.168.0.82
Platform: cisco WS-C3750E-24TD, Capabilities: Switch IGMP Filtering
Interface: mgmt0, Port ID (outgoing port): GigabitEthernet1/0/13
Holdtime: 179 sec
Version:
Cisco IOS Software, C3750E Software (C3750E-UNIVERSAL-M), Version 12.2(35)SE5, R
ELEASE SOFTWARE (fc1)
Copyright (c) 1986-2007 by Cisco Systems, Inc.
Compiled Thu 19-Jul-07 16:17 by nachen
Advertisement Version: 2
Native VLAN: 16
VTP Management Domain:
Duplex: full
Mgmt address(es):
    IPv4 Address: 192.168.0.82
switch#

This example shows how to display the detailed information of all CDP neighbors:

switch# show cdp neighbors detail
----------------------------------------
Device ID:savbu-qa-dist-120
System Name:
Interface address(es):
    IPv4 Address: 192.168.0.82
Platform: cisco WS-C3750E-24TD, Capabilities: Switch IGMP Filtering
Interface: mgmt0, Port ID (outgoing port): GigabitEthernet1/0/13
Holdtime: 128 sec
Version:
Cisco IOS Software, C3750E Software (C3750E-UNIVERSAL-M), Version 12.2(35)SE5, R
ELEASE SOFTWARE (fc1)
Copyright (c) 1986-2007 by Cisco Systems, Inc.
Compiled Thu 19-Jul-07 16:17 by nachen
Advertisement Version: 2
Native VLAN: 16
VTP Management Domain:
Duplex: full
Mgmt address(es):
    IPv4 Address: 192.168.0.82
----------------------------------------
Device ID:swor96(SSI13110AAQ)
System Name:swor96
Interface address(es):
    IPv4 Address: 192.168.0.1
Platform: N5K-C5010P-BF, Capabilities: Switch IGMP Filtering Supports-STP-Disput
e
Interface: Ethernet1/17, Port ID (outgoing port): Ethernet1/19
Holdtime: 175 sec
Version:
Cisco Nexus Operating System (NX-OS) Software, Version 5.0(3)N2(1)
Advertisement Version: 2
Native VLAN: 1
Duplex: full
Physical Location: snmplocation
Mgmt address(es):
    IPv4 Address: 192.168.0.96
----------------------------------------
Device ID:swor96(SSI13110AAQ)
System Name:swor96
Interface address(es):
    IPv4 Address: 192.168.0.1
Platform: N5K-C5010P-BF, Capabilities: Switch IGMP Filtering Supports-STP-Disput
e
Interface: Ethernet1/18, Port ID (outgoing port): Ethernet1/20
Holdtime: 175 sec
Version:
Cisco Nexus Operating System (NX-OS) Software, Version 5.0(3)N2(1)
Advertisement Version: 2
Native VLAN: 1
Duplex: full
Physical Location: snmplocation
Mgmt address(es):
    IPv4 Address: 192.168.0.96
----------------------------------------
Device ID:swor95(SSI13110AAS)
System Name:swor95
Interface address(es):
    IPv4 Address: 192.168.0.95
Platform: N5K-C5010P-BF, Capabilities: Switch IGMP Filtering Supports-STP-Disput
e
Interface: Ethernet1/29, Port ID (outgoing port): Ethernet1/19
Holdtime: 121 sec
Version:
Cisco Nexus Operating System (NX-OS) Software, Version 5.0(3)N2(1)
Advertisement Version: 2
Native VLAN: 1
Duplex: full
Physical Location: snmplocation
Mgmt address(es):
    IPv4 Address: 192.168.0.95
switch#

Examples

This example shows how to display the CDP traffic statistics for an Ethernet interface:

switch# show cdp traffic interface ethernet 1/29
----------------------------------------
Traffic statistics for Ethernet1/29
Input Statistics:
    Total Packets: 3203
    Valid CDP Packets: 3203
        CDP v1 Packets: 0
        CDP v2 Packets: 3203
    Invalid CDP Packets: 0
        Unsupported Version: 0
        Checksum Errors: 0
        Malformed Packets: 0
Output Statistics:
    Total Packets: 3203
        CDP v1 Packets: 0
        CDP v2 Packets: 3203
    Send Errors: 0
switch# 

This example shows how to display CDP traffic statistics for a management interface:

switch# show cdp traffic interface mgmt 0
----------------------------------------
Traffic statistics for mgmt0
Input Statistics:
    Total Packets: 3201
    Valid CDP Packets: 3201
        CDP v1 Packets: 0
        CDP v2 Packets: 3201
    Invalid CDP Packets: 0
        Unsupported Version: 0
        Checksum Errors: 0
        Malformed Packets: 0
Output Statistics:
    Total Packets: 3201
        CDP v1 Packets: 0
        CDP v2 Packets: 3201
    Send Errors: 0
switch#

Examples

This example shows how to display the summary configuration information of the specified interface:

switch# show interface brief 
--------------------------------------------------------------------------------
Ethernet      VLAN   Type Mode   Status  Reason                   Speed     Port
Interface                                                                   Ch #
--------------------------------------------------------------------------------
Eth1/1        1      eth  trunk  up      none                        10G(D) 4000
Eth1/2        1      eth  trunk  up      none                        10G(D) 4000
Eth1/3        1      eth  trunk  up      none                        10G(D) 4000
Eth1/4        1      eth  trunk  up      none                        10G(D) 4000
Eth1/5        1      eth  access down    SFP not inserted            10G(D) --
Eth1/6        1      eth  access down    SFP not inserted            10G(D) --
Eth1/7        1      eth  trunk  up      none                        10G(D) 10
Eth1/8        1      eth  trunk  up      none                        10G(D) 10
Eth1/9        1      eth  trunk  up      none                        10G(D) 10
Eth1/10       1      eth  trunk  up      none                        10G(D) 10
Eth1/11       1      eth  access down    SFP not inserted            10G(D) --
Eth1/12       1      eth  access down    SFP not inserted            10G(D) --
Eth1/13       1      eth  access down    SFP not inserted            10G(D) --
Eth1/14       1      eth  access down    SFP not inserted            10G(D) --
Eth1/15       1      eth  access down    SFP not inserted            10G(D) --
Eth1/16       1      eth  access down    SFP not inserted            10G(D) --
Eth1/17       1      eth  access down    SFP not inserted            10G(D) --
Eth1/18       1      eth  access down    SFP not inserted            10G(D) --
Eth1/19       1      eth  access down    SFP not inserted            10G(D) --
Eth1/20       1      eth  access down    SFP not inserted            10G(D) --
Eth1/21       1      eth  access down    SFP not inserted            10G(D) --
Eth1/22       1      eth  access down    SFP not inserted            10G(D) --
Eth1/23       1      eth  access down    Link not connected          10G(D) --
Eth1/24       1      eth  access down    Link not connected          10G(D) --
Eth1/25       1      eth  access down    SFP not inserted            10G(D) --
Eth1/26       1      eth  access down    SFP not inserted            10G(D) --
Eth1/27       1      eth  access down    SFP not inserted            10G(D) --
Eth1/28       1      eth  access down    SFP not inserted            10G(D) --
Eth1/29       1      eth  access down    SFP not inserted            10G(D) --
Eth1/30       1      eth  access down    SFP not inserted            10G(D) --
Eth1/31       1      eth  access down    SFP not inserted            10G(D) --
Eth1/32       1      eth  access down    SFP not inserted            10G(D) --
Eth1/33       1      eth  access down    SFP not inserted            10G(D) --
Eth1/34       1      eth  access down    SFP not inserted            10G(D) --
Eth1/35       1      eth  access down    SFP not inserted            10G(D) --
Eth1/36       1      eth  access down    SFP not inserted            10G(D) --
Eth1/37       1      eth  access down    SFP not inserted            10G(D) --
Eth1/38       1      eth  access down    SFP not inserted            10G(D) --
Eth1/39       1      eth  access down    SFP not inserted            10G(D) --
Eth1/40       1      eth  trunk  up      none                        10G(D) --
Eth2/1        1      eth  access down    SFP not inserted            10G(D) --
Eth2/2        1      eth  access up      none                        10G(D) --
Eth2/3        1      eth  access down    SFP not inserted            10G(D) --
Eth2/4        1      eth  access up      none                        10G(D) --
Eth2/5        1      eth  access up      none                        10G(D) --
Eth2/6        1      eth  access down    SFP not inserted            10G(D) --
--------------------------------------------------------------------------------
Port-channel VLAN  Type Mode   Status  Reason                    Speed  Protocol
Interface
--------------------------------------------------------------------------------
Po10         1     eth  trunk  up      none                       a-10G(D)  lacp
Po4000       1     eth  trunk  up      none                       a-10G(D)  lacp
--------------------------------------------------------------------------------
Port   VRF          Status IP Address                              Speed    MTU
--------------------------------------------------------------------------------
mgmt0  --           up     192.168.10.37                           100      1500
-------------------------------------------------------------------------------
Interface Secondary VLAN(Type)                    Status Reason
-------------------------------------------------------------------------------
Vlan1     --                                      down   Administratively down
switch#

This example shows how to display the summary configuration information of interfaces, including routed interfaces:

switch# show interface brief
 
--------------------------------------------------------------------------------
Ethernet      VLAN   Type Mode   Status  Reason                   Speed     Port
Interface                                                                   Ch #
--------------------------------------------------------------------------------
Eth1/1        1      eth  access down    Link not connected          10G(D) --
Eth1/2        1      eth  trunk  up      none                        10G(D) --
Eth1/3        1      eth  access down    SFP not inserted            10G(D) --
Eth1/4        1      eth  access down    SFP not inserted            10G(D) --
Eth1/5        --     eth  routed up      none                        10G(D) --
Eth1/5.2      --     eth  routed down    Configuration Incomplete    10G(D) --
Eth1/6        1      eth  access up      none                        10G(D) --
Eth1/7        1      eth  access up      none                        10G(D) --
Eth1/8        1      eth  trunk  up      none                        10G(D) 100
Eth1/9        1      eth  access up      none                        10G(D) --
Eth1/10       1      eth  access down    Link not connected          10G(D) --
Eth1/11       1      eth  access down    SFP not inserted            10G(D) --
Eth1/12       1      eth  access down    SFP not inserted            10G(D) --
Eth1/13       1      eth  access down    SFP not inserted            10G(D) --
Eth1/14       1      eth  access down    SFP not inserted            10G(D) --
Eth1/15       1      eth  access down    SFP not inserted            10G(D) --
Eth1/16       1      eth  access down    SFP not inserted            10G(D) --
Eth1/17       1      eth  access up      none                        10G(D) --
Eth1/18       1      eth  access up      none                        10G(D) --
Eth1/19       1      eth  fabric up      none                        10G(D) --
Eth1/20       1      eth  access down    Link not connected          10G(D) --
Eth1/21       1      eth  access up      none                        10G(D) --
Eth1/22       1      eth  access down    Link not connected          10G(D) --
Eth1/23       1      eth  access down    SFP not inserted            10G(D) --
Eth1/24       1      eth  access down    SFP not inserted            10G(D) --
Eth1/25       1      eth  access down    Link not connected          10G(D) --
Eth1/26       1      eth  access down    SFP not inserted            10G(D) --
Eth1/27       1      eth  access down    SFP not inserted            10G(D) --
Eth1/28       1      eth  access down    SFP not inserted            10G(D) --
Eth1/29       1      eth  access down    Link not connected          10G(D) --
Eth1/30       1      eth  access down    SFP not inserted            10G(D) --
Eth1/31       1      eth  access down    SFP not inserted            10G(D) --
Eth1/32       1      eth  access up      none                        10G(D) --
--------------------------------------------------------------------------------
Port-channel VLAN  Type Mode   Status  Reason                    Speed  Protocol
Interface
--------------------------------------------------------------------------------
Po100        1     eth  trunk  up      none                       a-10G(D)  none
--------------------------------------------------------------------------------
Port   VRF          Status IP Address                              Speed    MTU
--------------------------------------------------------------------------------
mgmt0  --           up     172.29.231.33                           1000     1500
-------------------------------------------------------------------------------
Interface Secondary VLAN(Type)                    Status Reason
-------------------------------------------------------------------------------
Vlan1     --                                      up     --
Vlan100   --                                      up     --
--------------------------------------------------------------------------------
Ethernet      VLAN   Type Mode   Status  Reason                   Speed     Port
Interface                                                                   Ch #
--------------------------------------------------------------------------------
Eth100/1/1    1      eth  access up      none                        10G(D) --
Eth100/1/2    1      eth  access down    Link not connected         auto(D) --
Eth100/1/3    1      eth  access up      none                        10G(D) --
Eth100/1/4    1      eth  access down    Link not connected         auto(D) --
Eth100/1/5    1      eth  access down    Link not connected         auto(D) --
Eth100/1/6    1      eth  access down    Link not connected         auto(D) --
Eth100/1/7    1      eth  access down    Link not connected         auto(D) --
Eth100/1/8    1      eth  access down    Link not connected         auto(D) --
Eth100/1/9    1      eth  access down    Link not connected         auto(D) --
Eth100/1/10   1      eth  access up      none                        10G(D) --
Eth100/1/11   1      eth  access down    Link not connected         auto(D) --
Eth100/1/12   1      eth  access down    Link not connected         auto(D) --
Eth100/1/13   1      eth  access down    Link not connected         auto(D) --
Eth100/1/14   1      eth  access down    Link not connected         auto(D) --
Eth100/1/15   1      eth  access up      none                        10G(D) --
Eth100/1/16   1      eth  access down    Link not connected         auto(D) --
--------------------------------------------------------------------------------
Interface     Status     Description
--------------------------------------------------------------------------------
Lo10          up         --
switch#

Note the following in the above display:

• Ethernet 1/5 is a Layer 3-ready interface. The following fields in the display help identify an interface as a configured Layer 3 interface:
  • Mode—routed
  • Status—up
  • Reason—none
• Ethernet 1/5.2 is a Layer 3 subinterface; however, the interface is not ready for Layer 3 configuration (Status—down).
• Interface Lo10 is a Layer 3 loopback interface.

This example shows how to display a brief summary of interfaces configured as FabricPath interfaces on a switch that runs Cisco NX-OS Release 5.1(3)N1(1):

switch# show interface brief
--------------------------------------------------------------------------------
Ethernet      VLAN    Type Mode   Status  Reason                   Speed     Port
Interface                                                                    Ch#
--------------------------------------------------------------------------------
Eth1/1        1       eth  access down    SFP not inserted           1000(D) --
Eth1/2        --      eth  routed down    SFP not inserted           1000(D) --
Eth1/3        1       eth  access down    SFP not inserted            10G(D) --
Eth1/4        1       eth  access down    SFP not inserted            10G(D) --
Eth1/5        1       eth  f-path down    SFP not inserted            10G(D) --
Eth1/6        1       eth  access down    Link not connected          10G(D) --
Eth1/7        1       eth  fabric down    Link not connected          10G(D) --
Eth1/8        1       eth  access down    SFP not inserted            10G(D) --
Eth1/9        1       eth  access down    SFP not inserted            10G(D) --
Eth1/10       1       eth  access down    SFP not inserted            10G(D) --
Eth1/11       1       eth  access down    SFP not inserted            10G(D) --
Eth1/12       1       eth  access down    SFP not inserted            10G(D) --
Eth1/13       1       eth  access down    SFP not inserted            10G(D) --
Eth1/14       1       eth  access down    SFP not inserted            10G(D) --
Eth1/15       1       eth  pvlan  up      none                       1000(D) --
Eth1/16       1       eth  access down    SFP not inserted            10G(D) --
Eth1/17       1       eth  access down    SFP not inserted            10G(D) --
switch#

In the above display, Ethernet 1/5 has the mode shown as “f-path” indicating that it has been configured as a FabricPath port.

Examples

This example shows how to display the interface capabilities for a specific interface:

switch# show interface ethernet 1/1 capabilities
 
Ethernet1/1
  Model:                 N5K-C5020P-BF-XL-SU
  Type (SFP capable):    SFP-H10GB-CU1M
  Speed:                 1000,10000
  Duplex:                full
  Trunk encap. type:     802.1Q
  Channel:               yes
  Broadcast suppression: percentage(0-100)
  Flowcontrol:           rx-(off/on),tx-(off/on)
  Rate mode:             none
  QOS scheduling:        rx-(6q1t),tx-(1p6q0t)
  CoS rewrite:           no
  ToS rewrite:           no
  SPAN:                  yes
  UDLD:                  yes
  Link Debounce:         yes
  Link Debounce Time:    yes
  MDIX:                  no
  Pvlan Trunk capable:   yes
  TDR capable:           no
  Port mode:             Switched
  FEX Fabric:            yes
switch#

Examples

This example shows how to display the debounce status of all interfaces:

switch# show interface debounce
 
--------------------------------------------------------------------------------
Port          Debounce time   Value(ms)
--------------------------------------------------------------------------------
Eth1/1        enable               100
Eth1/2        enable               100
Eth1/3        enable               100
Eth1/4        enable               100
Eth1/5        enable               100
Eth1/6        enable               100
Eth1/7        enable               100
Eth1/8        enable               100
Eth1/9        enable               100
Eth1/10       enable               100
Eth1/11       enable               100
Eth1/12       enable               100
Eth1/13       enable               100
Eth1/14       enable               100
Eth1/15       enable               100
Eth1/16       enable               100
Eth1/17       enable               100
Eth1/18       enable               100
Eth1/19       enable               100
Eth1/20       enable               100
Eth1/21       enable               100
Eth1/22       enable               100
Eth1/23       enable               100
Eth1/24       enable               100
Eth1/25       enable               100
Eth1/26       enable               100
Eth1/27       enable               100
Eth1/28       enable               100
Eth1/29       enable               100
Eth1/30       enable               100
Eth1/31       enable               100
Eth1/32       enable               100
--More--
switch#

Examples

This example shows how to display the detailed configuration of the specified interface:

switch# show interface ethernet 1/1
 
Ethernet1/1 is up
  Hardware: 1000/10000 Ethernet, address: 000d.ece7.df48 (bia 000d.ece7.df48)
  MTU 1500 bytes, BW 10000000 Kbit, DLY 10 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation ARPA
  Port mode is fex-fabric
  full-duplex, 10 Gb/s, media type is 1/10g
  Beacon is turned off
  Input flow-control is off, output flow-control is off
  Rate mode is dedicated
  Switchport monitor is off
  Last link flapped 09:03:57
  Last clearing of "show interface" counters never
  30 seconds input rate 2376 bits/sec, 0 packets/sec
  30 seconds output rate 1584 bits/sec, 0 packets/sec
  Load-Interval #2: 5 minute (300 seconds)
    input rate 1.58 Kbps, 0 pps; output rate 792 bps, 0 pps
  RX
    0 unicast packets  10440 multicast packets  0 broadcast packets
    10440 input packets  11108120 bytes
    0 jumbo packets  0 storm suppression packets
    0 runts  0 giants  0 CRC  0 no buffer
    0 input error  0 short frame  0 overrun   0 underrun  0 ignored
    0 watchdog  0 bad etype drop  0 bad proto drop  0 if down drop
    0 input with dribble  0 input discard
    0 Rx pause
  TX
    0 unicast packets  20241 multicast packets  105 broadcast packets
    20346 output packets  7633280 bytes
    0 jumbo packets
    0 output errors  0 collision  0 deferred  0 late collision
    0 lost carrier  0 no carrier  0 babble
    0 Tx pause
  1 interface resets
switch#

This example shows how to display the counters configured on a specified interface:

switch# show interface ethernet 1/1 counters
 
--------------------------------------------------------------------------------
Port                InOctets       InUcastPkts      InMcastPkts      InBcastPkts
--------------------------------------------------------------------------------
Eth1/1              17193136                 0            16159                0
--------------------------------------------------------------------------------
Port               OutOctets      OutUcastPkts     OutMcastPkts     OutBcastPkts
--------------------------------------------------------------------------------
Eth1/1	           11576758                 0            28326              106
switch#

This example shows how to display the information for an interface configured for Adapter-FEX:

switch# show interface ethernet 1/2
 
Ethernet1/2 is up
  Hardware: 1000/10000 Ethernet, address: 000d.ecb0.fc49 (bia 000d.ecb0.fc49)
  MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation ARPA
  Port mode is vntag
  full-duplex, 1000 Mb/s, media type is 10G
  Beacon is turned off
  Input flow-control is off, output flow-control is on
  Rate mode is dedicated
  Switchport monitor is off
  EtherType is 0x8100
  Last link flapped 00:00:13
  Last clearing of "show interface" counters 1d05h
  30 seconds input rate 0 bits/sec, 0 bytes/sec, 0 packets/sec
  30 seconds output rate 1328 bits/sec, 166 bytes/sec, 0 packets/sec
  Load-Interval #2: 5 minute (300 seconds)
    input rate 0 bps, 0 pps; output rate 160 bps, 0 pps
  RX
    32453811602 unicast packets  649076 multicast packets  0 broadcast packets
    32454460682 input packets  2206903326245 bytes
    0 jumbo packets  0 storm suppression packets
    3 runts  0 giants  1 CRC  0 no buffer
    4 input error  0 short frame  0 overrun   0 underrun  0 ignored
    0 watchdog  0 bad etype drop  0 bad proto drop  0 if down drop
    0 input with dribble  0 input discard
    0 Rx pause
  TX
    33695526841 unicast packets  36871810887 multicast packets  72059438 broadca
st packets
    70639397169 output packets  4803378946692 bytes
    0 jumbo packets
    3 output errors  0 collision  0 deferred  0 late collision
    0 lost carrier  0 no carrier  0 babble
    0 Tx pause
  2 interface resets
switch#

The above display shows the port mode configured as a virtual network tag (VNTag) port.

This example shows how to display the detailed configuration information of a specified subinterface:

switch# show interface ethernet 1/5.2 
Ethernet1/5.2 is up
  Hardware: 1000/10000 Ethernet, address: 0005.73a6.1dbc (bia 0005.73a6.1d6c)
  Description: Eth 1/5.2 subinterfaces
  Internet Address is 192.0.0.3/24
  MTU 1500 bytes, BW 1500 Kbit, DLY 2000 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation 802.1Q Virtual LAN, Vlan ID 100
  EtherType is 0x8100
switch#

This example shows how to display the brief configuration information of a specified subinterface:

switch# show interface ethernet 1/5.2 brief
 
--------------------------------------------------------------------------------
Ethernet      VLAN   Type Mode   Status  Reason                   Speed     Port
Interface                                                                   Ch #
--------------------------------------------------------------------------------
Eth1/5.2      100    eth  routed up      none                        10G(D) --
switch#

This example shows how to display the purpose of a specified subinterface:

switch# show interface ethernet 1/5.2 description
 
-------------------------------------------------------------------------------
Port          Type   Speed   Description
-------------------------------------------------------------------------------
Eth1/5.2      eth    10G     Eth 1/5.2 subinterfaces
switch#

This example shows how to display the switchport information for a specific interface:

switch# show interface ethernet 1/2 switchport
 
Name: Ethernet1/2
  Switchport: Enabled
  Switchport Monitor: Not enabled
  Operational Mode: trunk
  Access Mode VLAN: 1 (default)
  Trunking Native Mode VLAN: 1 (default)
  Trunking VLANs Enabled: 1,300-800
  Pruning VLANs Enabled: 2-1001
  Administrative private-vlan primary host-association: none
  Administrative private-vlan secondary host-association: none
  Administrative private-vlan primary mapping: none
  Administrative private-vlan secondary mapping: none
  Administrative private-vlan trunk native VLAN: none
  Administrative private-vlan trunk encapsulation: dot1q
  Administrative private-vlan trunk normal VLANs: none
  Administrative private-vlan trunk private VLANs: none
  Operational private-vlan: none
  Unknown unicast blocked: disabled
  Unknown multicast blocked: disabled
  Monitor destination rate-limit: 1G
switch#

In the above display, the Monitor destination rate-limit field displays the rate limit configured on a switchport interface on a Cisco Nexus 5010 Series switch.

Note	You can configure the monitor destination rate-limit only on a Cisco Nexus 5010 Series switch or Cisco Nexus 5020 Series switch.

This example shows how to display the information about a specific Ethernet interface that is bound to a virtual Ethernet interface:

switch(config)# interface vethernet 10
 
switch(config-if)# bind interface ethernet 1/5 channel 10 
switch(config-if)# inherit port-profile ppVEth
 
switch(config-if)# untagged cos 3
 
switch(config-if)# exit
 
switch(config)# exit
 
switch# show interface ethernet 1/5 brief
 
--------------------------------------------------------------------------------
Ethernet      VLAN   Type Mode   Status  Reason                   Speed     Port
Interface                                                                   Ch #
--------------------------------------------------------------------------------
Eth1/5        --     eth  routed down    SFP not inserted            10G(D) 10
switch#

The following table describes the significant fields in the above display.

This example shows how to display the MAC address of a specified subinterface:

switch# show interface ethernet 1/5.2 
mac-address
 
--------------------------------------------------------------------------------
Interface                  Mac-Address     Burn-in Mac-Address
--------------------------------------------------------------------------------
Ethernet1/5.2              0005.73a6.1dbc  0005.73a6.1d6c
switch#

Examples

This example shows how to display the configuration information for a specific loopback interface:

switch# show interface loopback 10
 
loopback10 is up
  Hardware: Loopback
  MTU 1500 bytes, BW 8000000 Kbit, DLY 5000 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation LOOPBACK
    0 packets input 0 bytes
    0 multicast frames 0 compressed
    0 input errors 0 frame 0 overrun 0 fifo
    0 packets output 0 bytes 0 underruns
    0 output errors 0 collisions 0 fifo
switch#

Teh following table describes the significant fields shown in the display.

This example shows how to display the brief information for a specific loopback interface:

switch# show interface loopback 10 brief 
--------------------------------------------------------------------------------
Interface     Status     Description
--------------------------------------------------------------------------------
loopback10    up         --
switch#

Examples

This example shows how to display the information on MAC addresses for the entire switch:

switch# show interface mac-address
 
----------------------------------------------------------------------------
Interface                  Mac-Address     Burn-in Mac-Address
----------------------------------------------------------------------------
Ethernet1/1                0005.9b78.6e7c  0005.9b78.6e48
Ethernet1/2                0005.9b78.6e7c  0005.9b78.6e49
Ethernet1/3                0005.9b78.6e7c  0005.9b78.6e4a
Ethernet1/4                0005.9b78.6e7c  0005.9b78.6e4b
Ethernet1/5                0005.9b78.6e7c  0005.9b78.6e4c
Ethernet1/6                0005.9b78.6e7c  0005.9b78.6e4d
Ethernet1/7                0005.9b78.6e7c  0005.9b78.6e4e
Ethernet1/8                0005.9b78.6e7c  0005.9b78.6e4f
Ethernet1/9                0005.9b78.6e7c  0005.9b78.6e50
Ethernet1/10               0005.9b78.6e7c  0005.9b78.6e51
Ethernet1/11               0005.9b78.6e7c  0005.9b78.6e52
Ethernet1/12               0005.9b78.6e7c  0005.9b78.6e53
Ethernet1/13               0005.9b78.6e7c  0005.9b78.6e54
Ethernet1/14               0005.9b78.6e7c  0005.9b78.6e55
Ethernet1/15               0005.9b78.6e7c  0005.9b78.6e56
Ethernet1/16               0005.9b78.6e7c  0005.9b78.6e57
Ethernet1/17               0005.9b78.6e7c  0005.9b78.6e58
Ethernet1/18               0005.9b78.6e7c  0005.9b78.6e59
Ethernet1/19               0005.9b78.6e7c  0005.9b78.6e5a
Ethernet1/20               0005.9b78.6e7c  0005.9b78.6e5b
Ethernet1/21               0005.9b78.6e7c  0005.9b78.6e5c
Ethernet1/22               0005.9b78.6e7c  0005.9b78.6e5d
--More--
switch# 

This example shows how to display the MAC address information for a specific port channel:

switch# show interface port-channel 5 mac-address
 
------------------------------------------------------------------------
Interface                  Mac-Address     Burn-in Mac-Address
------------------------------------------------------------------------
port-channel5              0005.9b78.6e7c  0005.9b78.6e7c
switch#

Examples

This example shows how to display the configuration information of the management interface:

switch# show interface mgmt 0
mgmt0 is up
  Hardware: GigabitEthernet, address: 0005.9b74.a6c1 (bia 0005.9b74.a6c1)
  Internet Address is 10.193.51.174/21
  MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec
  reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation ARPA
  full-duplex, 1000 Mb/s
  EtherType is 0x0000
  1 minute input rate 11336 bits/sec, 9 packets/sec
  1 minute output rate 2248 bits/sec, 3 packets/sec
  Rx
    22722587 input packets 7487592 unicast packets 7082728 multicast packets
    8152267 broadcast packets 3375124199 bytes
  Tx
    7618171 output packets 7283211 unicast packets 334751 multicast packets
    209 broadcast packets 1056259251 bytes
switch#

This example shows how to display the summary configuration information of the management interface:

switch# show interface mgmt 0 brief

Examples

This example shows how to display the configuration information of a specified EtherChannel interface:

switch# show interface port-channel 21
 
port-channel21 is up
  Hardware: Port-Channel, address: 000d.ece7.df72 (bia 000d.ece7.df72)
  MTU 1500 bytes, BW 10000000 Kbit, DLY 10 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation ARPA
  Port mode is trunk
  full-duplex, 10 Gb/s
  Beacon is turned off
  Input flow-control is on, output flow-control is on
  Switchport monitor is off
  Members in this channel: Eth2/3
  Last clearing of "show interface" counters never
  30 seconds input rate 0 bits/sec, 0 packets/sec
  30 seconds output rate 352 bits/sec, 0 packets/sec
  Load-Interval #2: 5 minute (300 seconds)
    input rate 0 bps, 0 pps; output rate 368 bps, 0 pps
  RX
    0 unicast packets  0 multicast packets  0 broadcast packets
    0 input packets  0 bytes
    0 jumbo packets  0 storm suppression packets
    0 runts  0 giants  0 CRC  0 no buffer
    0 input error  0 short frame  0 overrun   0 underrun  0 ignored
    0 watchdog  0 bad etype drop  0 bad proto drop  0 if down drop
    0 input with dribble  0 input discard
    0 Rx pause
  TX
    0 unicast packets  15813 multicast packets  9 broadcast packets
    15822 output packets  1615917 bytes
    0 jumbo packets
    0 output errors  0 collision  0 deferred  0 late collision
    0 lost carrier  0 no carrier  0 babble
    0 Tx pause
  1 interface resets
switch#

Examples

This example shows how to display the error disabled state of interfaces:

switch# show interface status err-disabled
 
-----------------------------------------------------------------------
Port         Name               Status   Reason
-----------------------------------------------------------------------
Eth114/1/27  --                 down     BPDUGuard errDisable
Eth114/1/28  --                 down     BPDUGuard errDisable
Eth114/1/29  --                 down     BPDUGuard errDisable
Eth114/1/30  --                 down     BPDUGuard errDisable
Eth114/1/31  --                 down     BPDUGuard errDisable
Eth114/1/32  --                 down     BPDUGuard errDisable
Eth114/1/33  --                 down     BPDUGuard errDisable
Eth114/1/34  --                 down     BPDUGuard errDisable
Eth114/1/35  --                 down     BPDUGuard errDisable
Eth114/1/36  --                 down     BPDUGuard errDisable
Eth114/1/39  --                 down     BPDUGuard errDisable
Eth114/1/40  --                 down     BPDUGuard errDisable
Eth114/1/41  --                 down     BPDUGuard errDisable
Eth114/1/42  --                 down     BPDUGuard errDisable
Eth114/1/43  --                 down     BPDUGuard errDisable
Eth114/1/44  --                 down     BPDUGuard errDisable
Eth114/1/45  --                 down     BPDUGuard errDisable
Eth114/1/46  --                 down     BPDUGuard errDisable
Eth114/1/47  --                 down     BPDUGuard errDisable
--More--
switch#

Examples

This example shows how to display information for all Ethernet and virtual Ethernet interfaces:

switch# show interface switchport
 
Name: Ethernet1/1
  Switchport: Enabled
  Switchport Monitor: Not enabled
  Operational Mode: fex-fabric
  Access Mode VLAN: 1 (default)
  Trunking Native Mode VLAN: 1 (default)
  Trunking VLANs Enabled: 1-3967,4048-4093
  Administrative private-vlan primary host-association: none
  Administrative private-vlan secondary host-association: none
  Administrative private-vlan primary mapping: none
  Administrative private-vlan secondary mapping: none
  Administrative private-vlan trunk native VLAN: none
  Administrative private-vlan trunk encapsulation: dot1q
  Administrative private-vlan trunk normal VLANs: none
  Administrative private-vlan trunk private VLANs:
  Operational private-vlan: none
  Unknown unicast blocked: disabled
  Unknown multicast blocked: disabled
Name: Ethernet1/2
  Switchport: Enabled
  Switchport Monitor: Not enabled
  Operational Mode: fex-fabric
  Access Mode VLAN: 1 (default)
  Trunking Native Mode VLAN: 1 (default)
  Trunking VLANs Enabled: 1-3967,4048-4093
  Administrative private-vlan primary host-association: none
--More--
switch#

This example shows how to display information for all Ethernet and virtual Ethernet interfaces on a switch that runs Cisco NX-OS Release 5.0(3)N1(1):

switch# show interface switchport
 
Name: Ethernet1/1
  Switchport: Enabled
  Switchport Monitor: Not enabled
  Operational Mode: fex-fabric
  Access Mode VLAN: 1 (default)
  Trunking Native Mode VLAN: 1 (default)
  Trunking VLANs Enabled: 1,300-795,900,1002-1005
  Pruning VLANs Enabled: 2-1001
  Administrative private-vlan primary host-association: none
  Administrative private-vlan secondary host-association: none
  Administrative private-vlan primary mapping: none
  Administrative private-vlan secondary mapping: none
  Administrative private-vlan trunk native VLAN: none
  Administrative private-vlan trunk encapsulation: dot1q
  Administrative private-vlan trunk normal VLANs: none
  Administrative private-vlan trunk private VLANs: none
  Operational private-vlan: none
  Unknown unicast blocked: disabled
  Unknown multicast blocked: disabled
Name: Ethernet1/2
  Switchport: Enabled
  Switchport Monitor: Not enabled
  Operational Mode: vntag
  Access Mode VLAN: 1 (default)
  Trunking Native Mode VLAN: 1 (default)
  Trunking VLANs Enabled: 1,300-795
  Pruning VLANs Enabled: 2-1001
  Administrative private-vlan primary host-association: none
  Administrative private-vlan secondary host-association: none
  Administrative private-vlan primary mapping: none
  Administrative private-vlan secondary mapping: none
  Administrative private-vlan trunk native VLAN: none
  Administrative private-vlan trunk encapsulation: dot1q
  Administrative private-vlan trunk normal VLANs: none
  Administrative private-vlan trunk private VLANs: none
  Operational private-vlan: none
  Unknown unicast blocked: disabled
  Unknown multicast blocked: disabled
Name: Ethernet1/3
  Switchport: Enabled
  Switchport Monitor: Not enabled
  Operational Mode: trunk
  Access Mode VLAN: 700 (VLAN0700)
  Trunking Native Mode VLAN: 1 (default)
  Trunking VLANs Enabled: 1,300-795
<--snip-->
:
:
Name: port-channel4000
  Switchport: Enabled
  Switchport Monitor: Not enabled
  Operational Mode: access
  Access Mode VLAN: 1 (default)
  Trunking Native Mode VLAN: 1 (default)
  Trunking VLANs Enabled: 1,300-795,900,1002-1005
  Pruning VLANs Enabled: 2-1001
  Administrative private-vlan primary host-association: none
  Administrative private-vlan secondary host-association: none
  Administrative private-vlan primary mapping: none
  Administrative private-vlan secondary mapping: none
  Administrative private-vlan trunk native VLAN: none
  Administrative private-vlan trunk encapsulation: dot1q
  Administrative private-vlan trunk normal VLANs: none
  Administrative private-vlan trunk private VLANs: none
  Operational private-vlan: none
  Unknown unicast blocked: disabled
  Unknown multicast blocked: disabled
Name: Vethernet2
  Switchport: Enabled
  Switchport Monitor: Not enabled
  Operational Mode: access
  Access Mode VLAN: 1 (default)
  Trunking Native Mode VLAN: 1 (default)
  Trunking VLANs Enabled: 1,300-795,900,1002-1005
  Pruning VLANs Enabled: 2-1001
  Administrative private-vlan primary host-association: none
  Administrative private-vlan secondary host-association: none
  Administrative private-vlan primary mapping: none
  Administrative private-vlan secondary mapping: none
  Administrative private-vlan trunk native VLAN: none
  Administrative private-vlan trunk encapsulation: dot1q
  Administrative private-vlan trunk normal VLANs: none
  Administrative private-vlan trunk private VLANs: none
  Operational private-vlan: none
  Unknown unicast blocked: disabled
  Unknown multicast blocked: disabled
Name: Vethernet10
  Switchport: Enabled
  Switchport Monitor: Not enabled
  Operational Mode: access
  Access Mode VLAN: 1 (default)
  Trunking Native Mode VLAN: 1 (default)
  Trunking VLANs Enabled: 1,300-795,900,1002-1005
  Pruning VLANs Enabled: 2-1001
  Administrative private-vlan primary host-association: none
  Administrative private-vlan secondary host-association: none
  Administrative private-vlan primary mapping: none
  Administrative private-vlan secondary mapping: none
  Administrative private-vlan trunk native VLAN: none
  Administrative private-vlan trunk encapsulation: dot1q
  Administrative private-vlan trunk normal VLANs: none
  Administrative private-vlan trunk private VLANs: none
  Operational private-vlan: none
  Unknown unicast blocked: disabled
  Unknown multicast blocked: disabled
Name: Ethernet101/1/1
  Switchport: Enabled
  Switchport Monitor: Not enabled
  Operational Mode: access
  Access Mode VLAN: 1 (default)
  Trunking Native Mode VLAN: 1 (default)
  Trunking VLANs Enabled: 1,300-795,900,1002-1005
  Pruning VLANs Enabled: 2-1001
  Administrative private-vlan primary host-association: none
<--Output truncated-->
switch#

This example shows how to display the rate limit status for Ethernet interface 1/2:

switch# show interface switchport
 
BEND-2(config-if)# show interface switchport
Name: Ethernet1/1
  Switchport: Enabled
  Switchport Monitor: Not enabled
  Operational Mode: fex-fabric
  Access Mode VLAN: 1 (default)
  Trunking Native Mode VLAN: 1 (default)
  Trunking VLANs Enabled: 1,300-800,900
  Pruning VLANs Enabled: 2-1001
  Administrative private-vlan primary host-association: none
  Administrative private-vlan secondary host-association: none
  Administrative private-vlan primary mapping: none
  Administrative private-vlan secondary mapping: none
  Administrative private-vlan trunk native VLAN: none
  Administrative private-vlan trunk encapsulation: dot1q
  Administrative private-vlan trunk normal VLANs: none
  Administrative private-vlan trunk private VLANs: none
  Operational private-vlan: none
  Unknown unicast blocked: disabled
  Unknown multicast blocked: disabled
Name: Ethernet1/2
  Switchport: Enabled
  Switchport Monitor: Not enabled
  Operational Mode: trunk
  Access Mode VLAN: 1 (default)
  Trunking Native Mode VLAN: 1 (default)
  Trunking VLANs Enabled: 1,300-800
  Pruning VLANs Enabled: 2-1001
  Administrative private-vlan primary host-association: none
  Administrative private-vlan secondary host-association: none
  Administrative private-vlan primary mapping: none
  Administrative private-vlan secondary mapping: none
  Administrative private-vlan trunk native VLAN: none
  Administrative private-vlan trunk encapsulation: dot1q
  Administrative private-vlan trunk normal VLANs: none
  Administrative private-vlan trunk private VLANs: none
  Operational private-vlan: none
  Unknown unicast blocked: disabled
  Unknown multicast blocked: disabled
  Monitor destination rate-limit: 1G
Name: Ethernet1/3
  Switchport: Enabled
  Switchport Monitor: Not enabled
  Operational Mode: trunk
  Access Mode VLAN: 700 (VLAN0700)
  Trunking Native Mode VLAN: 1 (default)
<--Output truncated-->
switch #

In the above display, the significant field for Ethernet interface 1/2 is highlighted.

This example shows how to display the voice VLAN information for an Ethernet interface on a switch that runs Cisco NX-OS Release 5.0(3)N2(1):

switch# show interface ethernet 1/28 switchport
 
Name: Ethernet1/28
  Switchport: Enabled
  Switchport Monitor: Not enabled
  Operational Mode: access
  Access Mode VLAN: 3000 (VLAN3000)
  Trunking Native Mode VLAN: 1 (default)
  Trunking VLANs Enabled: 1,200,300-302,500,2001-2248,3000-3001,4049,4090
  Pruning VLANs Enabled: 2-1001
  Voice VLAN: 3
  Extended Trust State : not trusted [COS = 0]
  Administrative private-vlan primary host-association: none
  Administrative private-vlan secondary host-association: none
  Administrative private-vlan primary mapping: none
  Administrative private-vlan secondary mapping: none
  Administrative private-vlan trunk native VLAN: none
  Administrative private-vlan trunk encapsulation: dot1q
  Administrative private-vlan trunk normal VLANs: none
  Administrative private-vlan trunk private VLANs: none
  Operational private-vlan: none
  Unknown unicast blocked: disabled
  Unknown multicast blocked: disabled
switch#

Examples

This example shows how to display information for all Flex Links:

switch# show interface switchport backup
 
Switch Backup Interface Pairs:
Active Interface        Backup Interface        State
------------------------------------------------------------------------
Ethernet1/2             Ethernet1/1             Active Down/Backup Down
Ethernet1/20            Ethernet1/21            Active Down/Backup Down
port-channel300         port-channel301         Active Up/Backup Down
port-channel500         port-channel501         Active Down/Backup Down
port-channel502         port-channel503         Active Down/Backup Down
port-channel504         Ethernet2/1             Active Down/Backup Down
switch#

This example shows how to display the detailed information for all Flex Links:

switch# show interface switchport backup detail
 
Switch Backup Interface Pairs:
Active Interface        Backup Interface        State
------------------------------------------------------------------------
Ethernet1/2             Ethernet1/1             Active Down/Backup Down
        Preemption Mode  : off
        Multicast Fast Convergence  : Off
        Bandwidth : 1000000 Kbit (Ethernet1/2), 10000000 Kbit (Ethernet1/1)
Ethernet1/20            Ethernet1/21            Active Down/Backup Down
        Preemption Mode  : off
        Multicast Fast Convergence  : Off
        Bandwidth : 10000000 Kbit (Ethernet1/20), 10000000 Kbit (Ethernet1/21)
port-channel300         port-channel301         Active Up/Backup Down
        Preemption Mode  : forced
        Preemption Delay : 35 seconds (default)
        Multicast Fast Convergence  : On
        Bandwidth : 20000000 Kbit (port-channel300), 10000000 Kbit (port-channel
301)
port-channel500         port-channel501         Active Down/Backup Down
        Preemption Mode  : off
        Multicast Fast Convergence  : On
        Bandwidth : 100000 Kbit (port-channel500), 100000 Kbit (port-channel501)
port-channel502         port-channel503         Active Down/Backup Down
        Preemption Mode  : off
        Multicast Fast Convergence  : Off
        Bandwidth : 100000 Kbit (port-channel502), 100000 Kbit (port-channel503)
port-channel504         Ethernet2/1             Active Down/Backup Down
        Preemption Mode  : off
        Multicast Fast Convergence  : Off
        Bandwidth : 100000 Kbit (port-channel504), 0 Kbit (Ethernet2/1)
switch#

The following table describes the significant fields displayed in the output.

Examples

This example shows how to display the transceivers connected to a specified Ethernet interface:

switch# show interface ethernet 1/1 transceiver
 
Ethernet1/1
    transceiver is present
    type is SFP-H10GB-CU1M
    name is CISCO-MOLEX
    part number is 74752-9044
    revision is 07
    serial number is MOC14081360
    nominal bitrate is 10300 MBit/sec
    Link length supported for copper is 1 m
    cisco id is --
    cisco extended id number is 4
switch#

Examples

This example shows how to display the LACP system identification:

switch# show lacp system-identifier
 
32768,0-5-9b-78-6e-7c
switch# 

This example shows how to display the LACP information for a specific interface:

switch# show lacp interface ethernet 1/1
 
Interface Ethernet1/1 is up
  Channel group is 1 port channel is Po1
  PDUs sent: 1684
  PDUs rcvd: 1651
  Markers sent: 0
  Markers rcvd: 0
  Marker response sent: 0
  Marker response rcvd: 0
  Unknown packets rcvd: 0
  Illegal packets rcvd: 0
Lag Id: [ [(8000, 0-5-9b-78-6e-7c, 0, 8000, 101), (8000, 0-d-ec-c9-c8-3c, 0, 800
0, 101)] ]
Operational as aggregated link since Wed Apr 21 00:37:27 2010
Local Port: Eth1/1   MAC Address= 0-5-9b-78-6e-7c
  System Identifier=0x8000,0-5-9b-78-6e-7c
  Port Identifier=0x8000,0x101
  Operational key=0
  LACP_Activity=active
  LACP_Timeout=Long Timeout (30s)
  Synchronization=IN_SYNC
  Collecting=true
  Distributing=true
  Partner information refresh timeout=Long Timeout (90s)
Actor Admin State=(Ac-1:To-1:Ag-1:Sy-0:Co-0:Di-0:De-0:Ex-0)
Actor Oper State=(Ac-1:To-0:Ag-1:Sy-1:Co-1:Di-1:De-0:Ex-0)
Neighbor: 1/1
  MAC Address= 0-d-ec-c9-c8-3c
  System Identifier=0x8000,0-d-ec-c9-c8-3c
  Port Identifier=0x8000,0x101
  Operational key=0
  LACP_Activity=active
  LACP_Timeout=Long Timeout (30s)
  Synchronization=IN_SYNC
  Collecting=true
  Distributing=true
Partner Admin State=(Ac-0:To-1:Ag-0:Sy-0:Co-0:Di-0:De-0:Ex-0)
Partner Oper State=(Ac-1:To-0:Ag-1:Sy-1:Co-1:Di-1:De-0:Ex-0)
switch#

Examples

This example shows how to display the EtherChannel capacity:

switch# show port-channel capacity
 
Port-channel resources
    768 total    29 used    739 free    3% used
switch# 

Examples

This example shows how to display the EtherChannel interface parameters:

switch# show port-channel compatibility-parameters
 
* port mode
Members must have the same port mode configured.
* port mode
Members must have the same port mode configured, either E,F or AUTO. If
they are configured in AUTO port mode, they have to negotiate E or F mode
when they come up. If a member negotiates a different mode, it will be
suspended.
* speed
Members must have the same speed configured. If they are configured in AUTO
speed, they have to negotiate the same speed when they come up. If a member
negotiates a different speed, it will be suspended.
* MTU
Members have to have the same MTU configured. This only applies to ethernet
port-channel.
* shut lan
Members have to have the same shut lan configured. This only applies to
ethernet port-channel.
* MEDIUM
Members have to have the same medium type configured. This only applies to
ethernet port-channel.
* Span mode
Members must have the same span mode.
* load interval
Member must have same load interval configured.
--More--
<---output truncated--->
switch# 

Examples

This example shows how to display the aggregation state of all EtherChannel interfaces:

switch# show port-channel database
 
port-channel19
    Last membership update is successful
    4 ports in total, 4 ports up
    First operational port is Ethernet199/1/24
    Age of the port-channel is 0d:09h:11m:30s
    Time since last bundle is 0d:09h:12m:20s
    Last bundled member is
    Ports:   Ethernet199/1/24  [active ] [up] *
             Ethernet199/1/28  [active ] [up]
             Ethernet199/1/30  [active ] [up]
             Ethernet199/1/31  [active ] [up]
port-channel21
    Last membership update is successful
    1 ports in total, 1 ports up
    First operational port is Ethernet2/3
    Age of the port-channel is 0d:09h:11m:30s
    Time since last bundle is 0d:09h:12m:20s
    Last bundled member is
    Ports:   Ethernet2/3     [on] [up] *
port-channel50
    Last membership update is successful
--More--
<---output truncated--->
switch# 

This example shows how to display the aggregation state for a specific EtherChannel interface:

switch# show port-channel database interface port-channel 21
 
port-channel21
    Last membership update is successful
    1 ports in total, 1 ports up
    First operational port is Ethernet2/3
    Age of the port-channel is 0d:09h:13m:14s
    Time since last bundle is 0d:09h:14m:04s
    Last bundled member is
    Ports:   Ethernet2/3     [on] [up] *
switch#

Examples

This example shows how to display the port channel load-balancing information:

switch# show port-channel load-balance
 
Port Channel Load-Balancing Configuration:
System: source-dest-ip
Port Channel Load-Balancing Addresses Used Per-Protocol:
Non-IP: source-dest-mac
IP: source-dest-ip source-dest-mac
switch#

The following table describes the fields shown in the display.

This example shows how to display the port channel load-balancing information when hardware hashing is not used:

switch# show port-channel load-balance forwarding-path interface port-channel 5 vlan 3 dst-ip 192.168.2.37
 
Missing params will be substituted by 0's.
Load-balance Algorithm on FEX: source-dest-ip
crc8_hash: Not Used     Outgoing port id: Ethernet133/1/3
Param(s) used to calculate load-balance (Unknown unicast, multicast and broadcas
t packets):
        dst-mac:  0000.0000.0000
        vlan id:  3
switch# 

This example shows how to display the port channel load-balancing information when hardware hashing is not used to determine the outgoing port ID:

switch# show port-channel load-balance forwarding-path interface port-channel 10 vlan 1 dst-ip 192.168.2.25 src-ip 192.168.2.10 dst-mac ffff.ffff.ffff src-mac aa:bb:cc:dd:ee:ff l4-src-port 0 l4-dst-port 1
 
Missing params will be substituted by 0's.
Load-balance Algorithm on switch: source-dest-port
crc8_hash: Not Used     Outgoing port id: Ethernet1/1
Param(s) used to calculate load-balance (Unknown unicast, multicast and broadcast packets):
        dst-mac:  ffff.ffff.ffff
        vlan id:  1
switch#

This example shows how to display the port channel load-balancing information when MCT is enabled and traffic flows from a vPC peer link:

switch# show port-channel load-balance forwarding-path interface port-channel 10 vlan 1 dst-ip 192.168.2.25 src-ip 192.168.2.10 dst-mac ffff.ffff.ffff src-mac aa:bb:cc:dd:ee:ff l4-src-port 0 l4-dst-port 1
 
Missing params will be substituted by 0's.
Load-balance Algorithm on switch: source-dest-port
crc8_hash: Not Used     Outgoing port id (non vPC peer-link traffic): ethernet1/2
crc8_hash: Not Used     Outgoing port id (vPC peer-link traffic): Ethernet1/1
Param(s) used to calculate load-balance (Unknown unicast, multicast and broadcast packets):
        dst-mac:  ffff.ffff.ffff
        vlan id:  1
switch#

This example shows how to display the port channel load-balancing information when hardware hashing is used to determine the outgoing port ID:

switch# show port-channel load-balance forwarding-path interface port-channel 10 vlan 1 dst-ip 192.168.2.25 src-ip 192.168.2.10 src-mac aa:bb:cc:dd:ee:ff l4-src-port 0 l4-dst-port 1
 
Missing params will be substituted by 0's.
Load-balance Algorithm on switch: source-dest-port
crc8_hash: 204  Outgoing port id: Ethernet1/1
Param(s) used to calculate load-balance:
        dst-port: 1
        src-port: 0
        dst-ip:   192.168.2.25
        src-ip:   192.168.2.10
        dst-mac:  0000.0000.0000
       src-mac:  aabb.ccdd.eeff
switch#

Examples

This example shows how to display summary information about EtherChannels:

switch# show port-channel summary
 
Flags:  D - Down        P - Up in port-channel (members)
        I - Individual  H - Hot-standby (LACP only)
        s - Suspended   r - Module-removed
        S - Switched    R - Routed
        U - Up (port-channel)
--------------------------------------------------------------------------------
Group Port-       Type     Protocol  Member Ports
      Channel
--------------------------------------------------------------------------------
1     Po1(SU)     Eth      LACP      Eth1/1(P)    Eth1/2(P)    Eth1/3(P)
                                     Eth1/4(P)    Eth1/21(P)   Eth1/22(P)
                                     Eth1/23(P)   Eth1/24(P)   Eth1/25(P)
                                     Eth1/26(P)   Eth1/27(P)   Eth1/28(P)
                                     Eth1/29(P)   Eth1/30(P)   Eth1/31(P)
                                     Eth1/32(P)
3     Po3(SU)     Eth      NONE      Eth1/9(P)    Eth1/10(P)   Eth1/13(P)
                                     Eth1/14(P)   Eth1/40(P)
5     Po5(SU)     Eth      NONE      Eth3/5(P)    Eth3/6(P)
6     Po6(SU)     Eth      NONE      Eth1/5(P)    Eth1/6(P)    Eth1/7(P)
                                     Eth1/8(P)
12    Po12(SU)    Eth      NONE      Eth3/3(P)    Eth3/4(P)
15    Po15(SD)    Eth      NONE      --
20    Po20(SU)    Eth      NONE      Eth1/17(P)   Eth1/18(P)   Eth1/19(D)
                                     Eth1/20(P)
24    Po24(SU)    Eth      LACP      Eth105/1/27(P)  Eth105/1/28(P)  Eth105/1/29
(P)
                                     Eth105/1/30(P)  Eth105/1/31(P)  Eth105/1/32
(P)
25    Po25(SU)    Eth      LACP      Eth105/1/23(P)  Eth105/1/24(P)  Eth105/1/25
(P)
                                     Eth105/1/26(P)
33    Po33(SD)    Eth      NONE      --
41    Po41(SD)    Eth      NONE      --
44    Po44(SD)    Eth      NONE      --
48    Po48(SD)    Eth      NONE      --
100   Po100(SD)   Eth      NONE      --
101   Po101(SD)   Eth      NONE      --
102   Po102(SU)   Eth      LACP      Eth102/1/2(P)
103   Po103(SU)   Eth      LACP      Eth102/1/3(P)
104   Po104(SU)   Eth      LACP      Eth102/1/4(P)
105   Po105(SU)   Eth      LACP      Eth102/1/5(P)
106   Po106(SU)   Eth      LACP      Eth102/1/6(P)
107   Po107(SU)   Eth      LACP      Eth102/1/7(P)
108   Po108(SU)   Eth      LACP      Eth102/1/8(P)
109   Po109(SU)   Eth      LACP      Eth102/1/9(P)
110   Po110(SU)   Eth      LACP      Eth102/1/10(P)
111   Po111(SU)   Eth      LACP      Eth102/1/11(P)
<---output truncated--->
switch# 

Examples

This example shows how to display the traffic statistics for all EtherChannels:

switch# show port-channel traffic
 
ChanId      Port Rx-Ucst Tx-Ucst Rx-Mcst Tx-Mcst Rx-Bcst Tx-Bcst
------ --------- ------- ------- ------- ------- ------- -------
    10    Eth1/7    0.0%    0.0%    0.0%    0.0%    0.0%    0.0%
    10    Eth1/8    0.0%    0.0%    0.0%    0.0%    0.0%    0.0%
    10    Eth1/9    0.0%    0.0%    0.0%    0.0%    0.0%    0.0%
    10   Eth1/10    0.0%    0.0%    0.0%    0.0%    0.0%    0.0%
------ --------- ------- ------- ------- ------- ------- -------
  4000    Eth1/1    0.0%    0.0%  99.64%  99.81%    0.0%    0.0%
  4000    Eth1/2    0.0%    0.0%   0.06%   0.06%    0.0%    0.0%
  4000    Eth1/3    0.0%    0.0%   0.23%   0.06%    0.0%    0.0%
  4000    Eth1/4    0.0%    0.0%   0.06%   0.06%    0.0%    0.0%
switch# 

This example shows how to display the traffic statistics for a specific EtherChannel:

switch# show port-channel traffic interface port-channel 10
 
ChanId      Port Rx-Ucst Tx-Ucst Rx-Mcst Tx-Mcst Rx-Bcst Tx-Bcst
------ --------- ------- ------- ------- ------- ------- -------
    10    Eth1/7    0.0%    0.0%    0.0%    0.0%    0.0%    0.0%
    10    Eth1/8    0.0%    0.0%    0.0%    0.0%    0.0%    0.0%
    10    Eth1/9    0.0%    0.0%    0.0%    0.0%    0.0%    0.0%
    10   Eth1/10    0.0%    0.0%    0.0%    0.0%    0.0%    0.0%
switch#

Examples

This example shows how to display the EtherChannel usage information:

switch# show port-channel usage
 
Total 29 port-channel numbers used
============================================
Used  :   19 , 21 , 50 , 100 , 150 , 170 - 171 , 198 - 199 , 256
          301 , 400 - 401 , 1032 - 1033 , 1111 , 1504 , 1511 , 1514 , 1516 - 1520
          1532 , 1548 , 1723 , 1905 , 1912
Unused:   1 - 18 , 20 , 22 - 49 , 51 - 99 , 101 - 149 , 151 - 169
          172 - 197 , 200 - 255 , 257 - 300 , 302 - 399 , 402 - 1031
          1034 - 1110 , 1112 - 1503 , 1505 - 1510 , 1512 - 1513 , 1515 , 1521 - 1531
          1533 - 1547 , 1549 - 1722 , 1724 - 1904 , 1906 - 1911 , 1913 - 4096
          (some numbers may be in use by SAN port channels)
switch# 

Examples

This example shows how to display the port security configuration on an interface:

switch# show port-security
Total Secured Mac Addresses in System (excluding one mac per port)     : 0
Max Addresses limit in System (excluding one mac per port) : 8192
----------------------------------------------------------------------------
Secure Port  MaxSecureAddr  CurrentAddr  SecurityViolation  Security Action
                (Count)       (Count)          (Count)
----------------------------------------------------------------------------
Ethernet1/5          10              0              0              Shutdown
============================================================================
switch#

Examples

This example shows how to display the resources available in the system:

switch#  show resource 

Resource Min Max Used Unused Avail
----------- ----- ----- ------ -------- -------
vlan 16 4094 509 0 3
monitor-session 0 2 0 0 2
vrf 2 1000 2 0 998
port-channel 0 768 2 0 766
u4route-mem 32 32 1 31 31
u6route-mem 16 16 1 15 15
m4route-mem 58 58 0 58 58
m6route-mem 8 8 0 8 8
bundle-map 0 16 2 0 14
 
switch#

Examples

This example shows how to display information on the running configuration:

switch# show running-config 

This example shows how to display detailed information on the running configuration:

switch# show running-config all

Examples

This example shows how to display the running configuration for backup interfaces:

switch# show running-config backup
 
!Command: show running-config backup
!Time: Sun Jan  4 06:27:36 2009
version 5.0(3)N2(1)
feature flexlink
logging level Flexlink 5
interface port-channel300
  switchport backup interface port-channel301 preemption mode forced
  switchport backup interface port-channel301 multicast fast-convergence
interface port-channel500
  switchport backup interface port-channel501 preemption delay 36
  switchport backup interface port-channel501 multicast fast-convergence
interface port-channel502
  switchport backup interface port-channel503
interface port-channel504
  switchport backup interface Ethernet2/1
interface Ethernet1/2
  switchport backup interface Ethernet1/1
interface Ethernet1/20
  switchport backup interface Ethernet1/21
interface Ethernet2/2
  switchport backup interface port-channel507 preemption mode forced
switch#

This example shows how to display the detailed running configuration for backup interfaces:

switch# show running-config backup all
 
!Command: show running-config backup all
!Time: Sun Jan  4 06:28:04 2009
version 5.0(3)N2(1)
feature flexlink
logging level Flexlink 5
interface port-channel300
  switchport backup interface port-channel301 preemption mode forced
  switchport backup interface port-channel301 preemption delay 35
  switchport backup interface port-channel301 multicast fast-convergence
interface port-channel500
  switchport backup interface port-channel501 preemption mode off
  switchport backup interface port-channel501 preemption delay 36
  switchport backup interface port-channel501 multicast fast-convergence
interface port-channel502
  switchport backup interface port-channel503 preemption mode off
  switchport backup interface port-channel503 preemption delay 35
interface port-channel504
  switchport backup interface Ethernet2/1 preemption mode off
  switchport backup interface Ethernet2/1 preemption delay 35
interface Ethernet1/2
  switchport backup interface Ethernet1/1 preemption mode off
  switchport backup interface Ethernet1/1 preemption delay 35
interface Ethernet1/20
  switchport backup interface Ethernet1/21 preemption mode off
  switchport backup interface Ethernet1/21 preemption delay 35
interface Ethernet2/2
  switchport backup interface port-channel507 preemption mode forced
  switchport backup interface port-channel507 preemption delay 35
switch#

Examples

This example shows how to display the running configuration for port channel 10:

switch(config)# 
show running-config interface port-channel 10
version 4.0(1)
interface port-channel10
  switchport
  switchport mode trunk
switch(config)#

This example shows how to display the running configuration for a virtual Ethernet interface:

switch# show running-config interface vethernet 10
!Command: show running-config interface Vethernet10
!Time: Fri Jan  2 01:40:37 2009
version 5.1(3)N1(1)
interface Vethernet10
  inherit port-profile ppVEth
  untagged cos 3
  switchport access vlan 101
  bind interface Ethernet1/5 channel 10
switch#

This example shows how to display the running configuration for VLAN 5 that has been configured as an SVI to be used for in-band management:

switch# show running-config interface vlan 5
!Command: show running-config interface Vlan5
!Time: Mon Apr  4 07:46:35 2005
version 5.1(3)N1(1)
interface Vlan5
  management
switch#

Examples

This example shows how to display the running configuration for PoE ports:

switch# show running-config poe

Examples

This example shows how to display the startup configuration for backup interfaces:

switch# show startup-config backup
 
!Command: show startup-config backup
!Time: Sun Jan  4 06:28:43 2009
!Startup config saved at: Thu Jan  1 03:40:28 2009
version 5.0(3)N2(1)
feature flexlink
logging level Flexlink 5
interface port-channel300
  switchport backup interface port-channel301 preemption mode forced
interface port-channel500
  switchport backup interface port-channel501 preemption delay 36
  switchport backup interface port-channel501 multicast fast-convergence
interface port-channel502
  switchport backup interface port-channel503
interface port-channel504
  switchport backup interface Ethernet2/1
interface Ethernet1/2
  switchport backup interface Ethernet1/1
interface Ethernet1/20
  switchport backup interface Ethernet1/21
interface Ethernet2/2
  switchport backup interface port-channel507 preemption mode forced
switch#

This example shows how to display the detailed startup configuration for backup interfaces:

switch# show startup-config backup all
 
!Command: show startup-config backup all
!Time: Sun Jan  4 06:29:17 2009
!Startup config saved at: Thu Jan  1 03:40:28 2009
version 5.0(3)N2(1)
feature flexlink
logging level Flexlink 5
interface port-channel300
  switchport backup interface port-channel301 preemption mode forced
  switchport backup interface port-channel301 preemption delay 35
interface port-channel500
  switchport backup interface port-channel501 preemption mode off
  switchport backup interface port-channel501 preemption delay 36
  switchport backup interface port-channel501 multicast fast-convergence
interface port-channel502
  switchport backup interface port-channel503 preemption mode off
  switchport backup interface port-channel503 preemption delay 35
interface port-channel504
  switchport backup interface Ethernet2/1 preemption mode off
  switchport backup interface Ethernet2/1 preemption delay 35
interface Ethernet1/2
  switchport backup interface Ethernet1/1 preemption mode off
  switchport backup interface Ethernet1/1 preemption delay 35
interface Ethernet1/20
  switchport backup interface Ethernet1/21 preemption mode off
  switchport backup interface Ethernet1/21 preemption delay 35
interface Ethernet2/2
  switchport backup interface port-channel507 preemption mode forced
  switchport backup interface port-channel507 preemption delay 35
switch#

Examples

This example shows how to display the running configuration for port channel 10:

switch(config)# 
show running-config interface port-channel 10
version 4.0(1)
interface port-channel10
  switchport
  switchport mode trunk
switch(config)#

This example shows how to display the running configuration for a virtual Ethernet interface:

switch# show running-config interface vethernet 10
!Command: show running-config interface Vethernet10
!Time: Fri Jan  2 01:40:37 2009
version 5.1(3)N1(1)
interface Vethernet10
  inherit port-profile ppVEth
  untagged cos 3
  switchport access vlan 101
  bind interface Ethernet1/5 channel 10
switch#

This example shows how to display the running configuration for VLAN 5 that has been configured as an SVI to be used for in-band management:

switch# show running-config interface vlan 5
!Command: show running-config interface Vlan5
!Time: Mon Apr  4 07:46:35 2005
version 5.1(3)N1(1)
interface Vlan5
  management
switch#

Examples

This example shows how to display the troubleshooting information about backup interfaces:

switch# show tech-support backup
 
`show interface switchport backup detail`
Switch Backup Interface Pairs:
Active Interface        Backup Interface        State
------------------------------------------------------------------------
Ethernet1/2             Ethernet1/1             Active Down/Backup Down
        Preemption Mode  : off
        Multicast Fast Convergence  : Off
        Bandwidth : 1000000 Kbit (Ethernet1/2), 10000000 Kbit (Ethernet1/1)
Ethernet1/20            Ethernet1/21            Active Down/Backup Down
        Preemption Mode  : off
        Multicast Fast Convergence  : Off
        Bandwidth : 10000000 Kbit (Ethernet1/20), 10000000 Kbit (Ethernet1/21)
port-channel300         port-channel301         Active Up/Backup Down
        Preemption Mode  : forced
        Preemption Delay : 35 seconds (default)
        Multicast Fast Convergence  : On
        Bandwidth : 20000000 Kbit (port-channel300), 10000000 Kbit (port-channel
301)
port-channel500         port-channel501         Active Down/Backup Down
        Preemption Mode  : off
        Multicast Fast Convergence  : On
        Bandwidth : 100000 Kbit (port-channel500), 100000 Kbit (port-channel501)
port-channel502         port-channel503         Active Down/Backup Down
        Preemption Mode  : off
        Multicast Fast Convergence  : Off
        Bandwidth : 100000 Kbit (port-channel502), 100000 Kbit (port-channel503)
port-channel504         Ethernet2/1             Active Down/Backup Down
        Preemption Mode  : off
        Multicast Fast Convergence  : Off
        Bandwidth : 100000 Kbit (port-channel504), 0 Kbit (Ethernet2/1)
`show platform backup internal trace`
FLEXLINK Trace Dump in FIFO order
================================
Trace Buffer Size: 5 MB; Num of times buffer wrapped 0; Max Rec-Size 156; Rec_id
 for next Msg 6219
===========================================================================
::0::[Thu Jan  1 00:01:21 2009 594649 usecs] flexlink_db_initialize: timer libra
ry initialization successful
::1::[Thu Jan  1 00:01:21 2009 594702 usecs] flexlink_db_initialize: starting VD
C 1
::2::[Thu Jan  1 00:01:21 2009 594752 usecs] flexlink_initialize: flexlink_db_in
itialize done
::3::[Thu Jan  1 00:01:21 2009 594946 usecs] flexlink_mts_queue_initialize: mts
bind for flexlink_q_mts(7) successful
::4::[Thu Jan  1 00:01:21 2009 595015 usecs] flexlink_mts_queue_initialize: regi
stered MTS_OPC_SDWRAP_DEBUG_DUMP(1530) with flexlink_q_mts
::5::[Thu Jan  1 00:01:21 2009 595064 usecs] flexlink_mts_queue_initialize: regi
stered MTS_OPC_SYSLOG_FACILITY_OPR(185) with flexlink_q_mts
::6::[Thu Jan  1 00:01:21 2009 595113 usecs] flexlink_mts_queue_initialize: regi
stered MTS_OPC_SYSMGR_CFG_ACTION(1360) with flexlink_q_mts
::7::[Thu Jan  1 00:01:21 2009 595161 usecs] flexlink_mts_queue_initialize: regi
stered MTS_OPC_SYSMGR_CFG_SAVED(1361) with flexlink_q_mts
::8::[Thu Jan  1 00:01:21 2009 595209 usecs] flexlink_mts_queue_initialize: regi
stered MTS_OPC_VSH_CMD_TLV(7679) with flexlink_q_mts
::9::[Thu Jan  1 00:01:21 2009 595257 usecs] flexlink_mts_queue_initialize: regi
stered MTS_OPC_VSH_CMD_TLV_SYNC(7682) with flexlink_q_mts
::10::[Thu Jan  1 00:01:21 2009 595304 usecs] flexlink_mts_queue_initialize: reg
istered MTS_OPC_FM_SRV_ENABLE_FEATURE(8925) with flexlink_q_mts
::11::[Thu Jan  1 00:01:21 2009 595351 usecs] flexlink_mts_queue_initialize: reg
istered MTS_OPC_FM_SRV_DISABLE_FEATURE(8926) with flexlink_q_mts
::12::[Thu Jan  1 00:01:21 2009 595400 usecs] flexlink_mts_queue_initialize: reg
istered MTS_OPC_IM_IF_CREATED(62467) with flexlink_q_mts
::13::[Thu Jan  1 00:01:21 2009 595448 usecs] flexlink_mts_queue_initialize: reg
istered MTS_OPC_IM_IF_REMOVED(62468) with flexlink_q_mts
::14::[Thu Jan  1 00:01:21 2009 595495 usecs] flexlink_mts_queue_initialize: reg
<--Output truncated-->
switch#

This example shows how to display the troubleshooting information for Flex Links:

switch# show tech-support flexlink
 
`show interface switchport backup detail`
Switch Backup Interface Pairs:
Active Interface        Backup Interface        State
------------------------------------------------------------------------
Ethernet1/2             Ethernet1/1             Active Down/Backup Down
        Preemption Mode  : off
        Multicast Fast Convergence  : Off
        Bandwidth : 1000000 Kbit (Ethernet1/2), 10000000 Kbit (Ethernet1/1)
Ethernet1/20            Ethernet1/21            Active Down/Backup Down
        Preemption Mode  : off
        Multicast Fast Convergence  : Off
        Bandwidth : 10000000 Kbit (Ethernet1/20), 10000000 Kbit (Ethernet1/21)
port-channel300         port-channel301         Active Up/Backup Down
        Preemption Mode  : forced
        Preemption Delay : 35 seconds (default)
        Multicast Fast Convergence  : On
        Bandwidth : 20000000 Kbit (port-channel300), 10000000 Kbit (port-channel
301)
port-channel500         port-channel501         Active Down/Backup Down
        Preemption Mode  : off
        Multicast Fast Convergence  : On
        Bandwidth : 100000 Kbit (port-channel500), 100000 Kbit (port-channel501)
port-channel502         port-channel503         Active Down/Backup Down
        Preemption Mode  : off
        Multicast Fast Convergence  : Off
        Bandwidth : 100000 Kbit (port-channel502), 100000 Kbit (port-channel503)
port-channel504         Ethernet2/1             Active Down/Backup Down
        Preemption Mode  : off
        Multicast Fast Convergence  : Off
        Bandwidth : 100000 Kbit (port-channel504), 0 Kbit (Ethernet2/1)
`show platform backup internal trace`
FLEXLINK Trace Dump in FIFO order
================================
Trace Buffer Size: 5 MB; Num of times buffer wrapped 0; Max Rec-Size 156; Rec_id
 for next Msg 6225
===========================================================================
::0::[Thu Jan  1 00:01:21 2009 594649 usecs] flexlink_db_initialize: timer libra
ry initialization successful
::1::[Thu Jan  1 00:01:21 2009 594702 usecs] flexlink_db_initialize: starting VD
C 1
::2::[Thu Jan  1 00:01:21 2009 594752 usecs] flexlink_initialize: flexlink_db_in
itialize done
::3::[Thu Jan  1 00:01:21 2009 594946 usecs] flexlink_mts_queue_initialize: mts
bind for flexlink_q_mts(7) successful
::4::[Thu Jan  1 00:01:21 2009 595015 usecs] flexlink_mts_queue_initialize: regi
stered MTS_OPC_SDWRAP_DEBUG_DUMP(1530) with flexlink_q_mts
::5::[Thu Jan  1 00:01:21 2009 595064 usecs] flexlink_mts_queue_initialize: regi
stered MTS_OPC_SYSLOG_FACILITY_OPR(185) with flexlink_q_mts
::6::[Thu Jan  1 00:01:21 2009 595113 usecs] flexlink_mts_queue_initialize: regi
stered MTS_OPC_SYSMGR_CFG_ACTION(1360) with flexlink_q_mts
::7::[Thu Jan  1 00:01:21 2009 595161 usecs] flexlink_mts_queue_initialize: regi
stered MTS_OPC_SYSMGR_CFG_SAVED(1361) with flexlink_q_mts
::8::[Thu Jan  1 00:01:21 2009 595209 usecs] flexlink_mts_queue_initialize: regi
stered MTS_OPC_VSH_CMD_TLV(7679) with flexlink_q_mts
::9::[Thu Jan  1 00:01:21 2009 595257 usecs] flexlink_mts_queue_initialize: regi
stered MTS_OPC_VSH_CMD_TLV_SYNC(7682) with flexlink_q_mts
::10::[Thu Jan  1 00:01:21 2009 595304 usecs] flexlink_mts_queue_initialize: reg
istered MTS_OPC_FM_SRV_ENABLE_FEATURE(8925) with flexlink_q_mts
::11::[Thu Jan  1 00:01:21 2009 595351 usecs] flexlink_mts_queue_initialize: reg
istered MTS_OPC_FM_SRV_DISABLE_FEATURE(8926) with flexlink_q_mts
::12::[Thu Jan  1 00:01:21 2009 595400 usecs] flexlink_mts_queue_initialize: reg
istered MTS_OPC_IM_IF_CREATED(62467) with flexlink_q_mts
<--Output truncated-->
switch#

Examples

This example shows how to display the troubleshooting information for PoE ports:

switch# show tech-support poe

Examples

This example shows how to display UDLD information for all interfaces:

switch# show udld
 
Interface Ethernet1/1
--------------------------------
Port enable administrative configuration setting: device-default
Port enable operational state: enabled
Current bidirectional state: bidirectional
Current operational state:  advertisement - Single neighbor detected
Message interval: 15
Timeout interval: 5
        Entry 1
        ----------------
        Expiration time: 41
        Cache Device index: 1
        Current neighbor state: bidirectional
        Device ID: FLC12280095
        Port ID: Ethernet1/1
        Neighbor echo 1 devices: SSI130205RT
        Neighbor echo 1 port: Ethernet1/1
        Message interval: 15
        Timeout interval: 5
        CDP Device name: N5Kswitch-2(FLC12280095)
Interface Ethernet1/2
--------------------------------
Port enable administrative configuration setting: device-default
Port enable operational state: enabled
Current bidirectional state: bidirectional
Current operational state:  advertisement - Single neighbor detected
Message interval: 15
Timeout interval: 5
        Entry 1
        ----------------
--More--
switch# 

This example shows how to display the UDLD information for a specified interface:

switch# show udld ethernet 1/1
 
Interface Ethernet1/1
--------------------------------
Port enable administrative configuration setting: device-default
Port enable operational state: enabled
Current bidirectional state: bidirectional
Current operational state:  advertisement - Single neighbor detected
Message interval: 15
Timeout interval: 5
        Entry 1
        ----------------
        Expiration time: 41
        Cache Device index: 1
        Current neighbor state: bidirectional
        Device ID: FLC12280095
        Port ID: Ethernet1/1
        Neighbor echo 1 devices: SSI130205RT
        Neighbor echo 1 port: Ethernet1/1
        Message interval: 15
        Timeout interval: 5
        CDP Device name: N5Kswitch-2(FLC12280095)
switch#

This example shows how to display the UDLD global status and configuration on all interfaces:

switch# show udld global
 
UDLD global configuration mode: enabled
UDLD global message interval: 15
switch#

This example shows how to display the UDLD neighbor interfaces:

switch# show udld neighbors
 
Port             Device Name    Device ID   Port ID         Neighbor State
--------------------------------------------------------------------------
Ethernet1/1      FLC12280095    1           Ethernet1/1     bidirectional
Ethernet1/2      FLC12280095    1           Ethernet1/2     bidirectional
Ethernet1/3      FLC12280095    1           Ethernet1/3     bidirectional
Ethernet1/4      FLC12280095    1           Ethernet1/4     bidirectional
Ethernet1/7      JAF1346000H    1           Ethernet1/7     bidirectional
Ethernet1/8      JAF1346000H    1           Ethernet1/8     bidirectional
Ethernet1/9      JAF1346000C    1           Ethernet1/9     bidirectional
Ethernet1/10     JAF1346000C    1           Ethernet1/10    bidirectional
switch#

Examples

This example shows how to display brief information about the vPCs:

switch(config)#
show vpc brief Legend: (*) - local vpc is down, forwarding via vPC
peer-link vPC domain id : 10 Peer status : peer adjacency formed ok vPC
keep-alive status : peer is alive Configuration consistency status: success vPC
role : primary Number of vPC configured : 1 vPC Peer-link status
--------------------------------------------------------------------- id Port
Status Active vlans -- ---- ------
-------------------------------------------------- 1 Po10 up 1-100 vPC status
---------------------------------------------------------------------- id Port
Status Consistency Reason Active vlans -- ---- ------ -----------
-------------------------- ------------ 20 Po20 up success success 1-100

This example also shows how to display brief information about the vPCs. In this example, the port channel failed the consistency check, and the device displays the reason for the failure:

switch(config)#
show vpc brief Legend: (*) - local vpc is down, forwarding via vPC
peer-link vPC domain id : 10 Peer status : peer adjacency formed ok vPC
keep-alive status : peer is alive Configuration consistency status: failed
Configuration consistency reason: vPC type-1 configuration incompatible - STP
interface port type inconsistent vPC role : secondary Number of vPC configured
: 1 vPC Peer-link status
--------------------------------------------------------------------- id Port
Status Active vlans -- ---- ------
-------------------------------------------------- 1 Po10 up 1-100 vPC status
---------------------------------------------------------------------- id Port
Status Consistency Reason Active vlans -- ---- ------ -----------
-------------------------- ------------ 20 Po20 up failed vPC type-1
configuration - incompatible - STP interface port type inconsistent

This example shows how to display information about the tracked objects in the vPCs, which is available beginning in Cisco NX-OS Release 4.2(1):

switch(config)#
show vpc brief Legend: (*) - local vpc is down, forwarding via vPC
peer-link vPC domain id : 1 Peer status : peer adjacency formed ok vPC
keep-alive status : peer is alive Configuration consistency status: success vPC
role : secondary Number of vPC configured : 3 Track object : 12 vPC Peer-link
status --------------------------------------------------------------------- id
Port Status Active vlans -- ---- ------
-------------------------------------------------- 1 Po10 up 1-100