To automatically configure quality of service (QoS) for voice over IP (VoIP) within a QoS domain, use the auto qos voip command in interface configuration mode. Use the no form of this command to return to the default setting.
auto qos voip { cisco-phone | cisco-softphone | trust}
no auto qos voip { cisco-phone | cisco-softphone | trust}
Syntax Description
cisco-phone
|
Specifies a port connected to a Cisco IP phone, and automatically configures QoS for VoIP. The QoS labels of incoming packets
are trusted only when the telephone is detected.
|
cisco-softphone
|
Specifies a port connected to a device running the Cisco SoftPhone, and automatically configures QoS for VoIP.
|
trust
|
Specifies a port connected to a trusted device, and automatically configures QoS for VoIP. The QoS labels of incoming packets
are trusted. For nonrouted ports, the CoS value of the incoming packet is trusted. For routed ports, the DSCP value of the
incoming packet is trusted.
|
Command Default
Auto-QoS is disabled on the port.
When auto-QoS is enabled, it uses the ingress packet label to categorize traffic, to assign packet labels, and to configure
the ingress and egress queues.
Command Default
Interface configuration
Command History
Release
|
Modification
|
Cisco IOS XE Gibraltar 16.11.1
|
This command was introduced.
|
Usage Guidelines
Use this command to configure the QoS appropriate for VoIP traffic within the QoS domain. The QoS domain includes the device,
the network interior, and edge devices that can classify incoming traffic for QoS.
Auto-QoS configures the device for VoIP with Cisco IP phones on device and routed ports and for devices running the Cisco
SoftPhone application. These releases support only Cisco IP SoftPhone Version 1.3(3) or later. Connected devices must use
Cisco Call Manager Version 4 or later.
To take advantage of the auto-QoS defaults, you should enable auto-QoS before you configure other QoS commands. You can fine-tune
the auto-QoS configuration after you enable auto-QoS.
Note
|
The device applies the auto-QoS-generated commands as if the commands were entered from the command-line interface (CLI).
An existing user configuration can cause the application of the generated commands to fail or to be overridden by the generated
commands. These actions occur without warning. If all the generated commands are successfully applied, any user-entered configuration
that was not overridden remains in the running configuration. Any user-entered configuration that was overridden can be retrieved
by reloading the device without saving the current configuration to memory. If the generated commands fail to be applied,
the previous running configuration is restored.
|
If this is the first port on which you have enabled auto-QoS, the auto-QoS-generated global configuration commands are executed
followed by the interface configuration commands. If you enable auto-QoS on another port, only the auto-QoS-generated interface
configuration commands for that port are executed.
When you enter the auto qos voip cisco-phone interface configuration command on a port at the edge of the network that is connected to a Cisco IP phone, the device enables
the trusted boundary feature. The device uses the Cisco Discovery Protocol (CDP) to detect the presence of a Cisco IP phone.
When a Cisco IP phone is detected, the ingress classification on the port is set to trust the QoS label received in the packet.
The device also uses policing to determine whether a packet is in or out of profile and to specify the action on the packet.
If the packet does not have a DSCP value of 24, 26, or 46 or is out of profile, the device changes the DSCP value to 0. When
a Cisco IP phone is absent, the ingress classification is set to not trust the QoS label in the packet. The policing is applied
to those traffic matching the policy-map classification before the device enables the trust boundary feature.
- When you enter the auto qos voip cisco-softphone interface configuration command on a port at the edge of the network that is connected to a device running the Cisco SoftPhone,
the device uses policing to decide whether a packet is in or out of profile and to specify the action on the packet. If the
packet does not have a DSCP value of 24, 26, or 46 or is out of profile, the device changes the DSCP value to 0.
- When you enter the auto qos voip trust interface configuration command on a port connected to the network interior, the device trusts the CoS value for nonrouted
ports or the DSCP value for routed ports in ingress packets (the assumption is that traffic has already been classified by
other edge devices).
You can enable auto-QoS on static, dynamic-access, and voice VLAN access, and trunk ports. When enabling auto-QoS with a Cisco
IP phone on a routed port, you must assign a static IP address to the IP phone.
Note
|
When a device running Cisco SoftPhone is connected to a device or routed port, the device supports only one Cisco SoftPhone
application per port.
|
After auto-QoS is enabled, do not modify a policy map or aggregate policer that includes AutoQoS in its name. If you need to modify the policy map or aggregate policer, make a copy of it, and change the copied policy map
or policer. To use the new policy map instead of the generated one, remove the generated policy map from the interface, and
apply the new policy map.
To display the QoS configuration that is automatically generated when auto-QoS is enabled, enable debugging before you enable
auto-QoS. Use the debug auto qos privileged EXEC command to enable auto-QoS debugging.
The following policy maps and class maps are created and applied when running the auto qos voip trust command:
Class maps:
-
class-default (match-any)
-
AutoQos-4.0-Output-Priority-Queue (match-any)
-
AutoQos-4.0-Output-Control-Mgmt-Queue (match-any)
-
AutoQos-4.0-Output-Multimedia-Conf-Queue (match-any)
-
AutoQos-4.0-Output-Trans-Data-Queue (match-any)
-
AutoQos-4.0-Output-Bulk-Data-Queue (match-any)
-
AutoQos-4.0-Output-Scavenger-Queue (match-any)
-
AutoQos-4.0-Output-Multimedia-Strm-Queue (match-any)
The following policy maps and class maps are created and applied when running the auto qos voip cisco-softphone command:
Class maps:
-
AutoQos-4.0-Voip-Data-Class (match-any)
-
AutoQos-4.0-Voip-Signal-Class (match-any)
-
AutoQos-4.0-Multimedia-Conf-Class (match-any)
-
AutoQos-4.0-Bulk-Data-Class (match-any)
-
AutoQos-4.0-Transaction-Class (match-any)
-
AutoQos-4.0-Scavanger-Class (match-any)
-
AutoQos-4.0-Signaling-Class (match-any)
-
AutoQos-4.0-Default-Class (match-any)
-
class-default (match-any)
-
AutoQos-4.0-Output-Priority-Queue (match-any)
-
AutoQos-4.0-Output-Control-Mgmt-Queue (match-any)
-
AutoQos-4.0-Output-Multimedia-Conf-Queue (match-any)
-
AutoQos-4.0-Output-Trans-Data-Queue (match-any)
-
AutoQos-4.0-Output-Bulk-Data-Queue (match-any)
-
AutoQos-4.0-Output-Scavenger-Queue (match-any)
-
AutoQos-4.0-Output-Multimedia-Strm-Queue (match-any)
The following policy maps and class maps are created and applied when running the auto qos voip cisco-phone command:
Class maps:
-
class AutoQos-4.0-Voip-Data-CiscoPhone-Class
-
class AutoQos-4.0-Voip-Signal-CiscoPhone-Class
-
class AutoQos-4.0-Default-Class
To disable auto-QoS on a port, use the no auto qos voip interface configuration command. Only the auto-QoS-generated interface configuration commands for this port are removed.
If this is the last port on which auto-QoS is enabled and you enter the no auto qos voip command, auto-QoS is considered disabled even though the auto-QoS-generated global configuration commands remain (to avoid
disrupting traffic on other ports affected by the global configuration).
Examples
The following is an example of the auto qos voip trust command and the applied policies and class maps:
Device(config)# interface hundredgigabitethernet1/0/31
Device(config-if)# auto qos voip trust
Device(config-if)# end
Device# show policy-map interface hundredgigabitethernet1/0/31
Hundredgigabitethernet1/0/31
Service-policy input: AutoQos-4.0-Trust-Cos-Input-Policy
Class-map: class-default (match-any)
0 packets
Match: any
0 packets, 0 bytes
5 minute rate 0 bps
QoS Set
cos cos table AutoQos-4.0-Trust-Cos-Table
Service-policy output: AutoQos-4.0-Output-Policy
queue stats for all priority classes:
Queueing
priority level 1
(total drops) 0
(bytes output) 0
Class-map: AutoQos-4.0-Output-Priority-Queue (match-any)
0 packets
Match: dscp cs4 (32) cs5 (40) ef (46)
0 packets, 0 bytes
5 minute rate 0 bps
Match: cos 5
0 packets, 0 bytes
5 minute rate 0 bps
Priority: 30% (300000 kbps), burst bytes 7500000,
Priority Level: 1
Class-map: AutoQos-4.0-Output-Control-Mgmt-Queue (match-any)
0 packets
Match: dscp cs2 (16) cs3 (24) cs6 (48) cs7 (56)
0 packets, 0 bytes
5 minute rate 0 bps
Match: cos 3
0 packets, 0 bytes
5 minute rate 0 bps
Queueing
queue-limit dscp 16 percent 80
queue-limit dscp 24 percent 90
queue-limit dscp 48 percent 100
queue-limit dscp 56 percent 100
(total drops) 0
(bytes output) 0
bandwidth remaining 10%
queue-buffers ratio 10
Class-map: AutoQos-4.0-Output-Multimedia-Conf-Queue (match-any)
0 packets
Match: dscp af41 (34) af42 (36) af43 (38)
0 packets, 0 bytes
5 minute rate 0 bps
Match: cos 4
0 packets, 0 bytes
5 minute rate 0 bps
Queueing
(total drops) 0
(bytes output) 0
bandwidth remaining 10%
queue-buffers ratio 10
Class-map: AutoQos-4.0-Output-Trans-Data-Queue (match-any)
0 packets
Match: dscp af21 (18) af22 (20) af23 (22)
0 packets, 0 bytes
5 minute rate 0 bps
Match: cos 2
0 packets, 0 bytes
5 minute rate 0 bps
Queueing
(total drops) 0
(bytes output) 0
bandwidth remaining 10%
queue-buffers ratio 10
Class-map: AutoQos-4.0-Output-Bulk-Data-Queue (match-any)
0 packets
Match: dscp af11 (10) af12 (12) af13 (14)
0 packets, 0 bytes
5 minute rate 0 bps
Match: cos 1
0 packets, 0 bytes
5 minute rate 0 bps
Queueing
(total drops) 0
(bytes output) 0
bandwidth remaining 4%
queue-buffers ratio 10
Class-map: AutoQos-4.0-Output-Scavenger-Queue (match-any)
0 packets
Match: dscp cs1 (8)
0 packets, 0 bytes
5 minute rate 0 bps
Queueing
(total drops) 0
(bytes output) 0
bandwidth remaining 1%
queue-buffers ratio 10
Class-map: AutoQos-4.0-Output-Multimedia-Strm-Queue (match-any)
0 packets
Match: dscp af31 (26) af32 (28) af33 (30)
0 packets, 0 bytes
5 minute rate 0 bps
Queueing
(total drops) 0
(bytes output) 0
bandwidth remaining 10%
queue-buffers ratio 10
Class-map: class-default (match-any)
0 packets
Match: any
0 packets, 0 bytes
5 minute rate 0 bps
Queueing
(total drops) 0
(bytes output) 0
bandwidth remaining 25%
queue-buffers ratio 25
The following is an example of the auto qos voip cisco-phone command and the applied policies and class maps:
Device(config)# interface hundredgigabitethernet1/0/5
Device(config-if)# auto qos voip cisco-phone
Device(config-if)# end
Device# show policy-map interface hundredgigabitethernet1/0/5
Hundredgigabitethernet1/0/5
Service-policy input: AutoQos-4.0-CiscoPhone-Input-Policy
Class-map: AutoQos-4.0-Voip-Data-CiscoPhone-Class (match-any)
0 packets
Match: cos 5
0 packets, 0 bytes
5 minute rate 0 bps
QoS Set
dscp ef
police:
cir 128000 bps, bc 8000 bytes
conformed 0 bytes; actions:
transmit
exceeded 0 bytes; actions:
set-dscp-transmit dscp table policed-dscp
conformed 0000 bps, exceed 0000 bps
Class-map: AutoQos-4.0-Voip-Signal-CiscoPhone-Class (match-any)
0 packets
Match: cos 3
0 packets, 0 bytes
5 minute rate 0 bps
QoS Set
dscp cs3
police:
cir 32000 bps, bc 8000 bytes
conformed 0 bytes; actions:
transmit
exceeded 0 bytes; actions:
set-dscp-transmit dscp table policed-dscp
conformed 0000 bps, exceed 0000 bps
Class-map: AutoQos-4.0-Default-Class (match-any)
0 packets
Match: access-group name AutoQos-4.0-Acl-Default
0 packets, 0 bytes
5 minute rate 0 bps
QoS Set
dscp default
Class-map: class-default (match-any)
0 packets
Match: any
0 packets, 0 bytes
5 minute rate 0 bps
Service-policy output: AutoQos-4.0-Output-Policy
queue stats for all priority classes:
Queueing
priority level 1
(total drops) 0
(bytes output) 0
Class-map: AutoQos-4.0-Output-Priority-Queue (match-any)
0 packets
Match: dscp cs4 (32) cs5 (40) ef (46)
0 packets, 0 bytes
5 minute rate 0 bps
Match: cos 5
0 packets, 0 bytes
5 minute rate 0 bps
Priority: 30% (300000 kbps), burst bytes 7500000,
Priority Level: 1
Class-map: AutoQos-4.0-Output-Control-Mgmt-Queue (match-any)
0 packets
Match: dscp cs2 (16) cs3 (24) cs6 (48) cs7 (56)
0 packets, 0 bytes
5 minute rate 0 bps
Match: cos 3
0 packets, 0 bytes
5 minute rate 0 bps
Queueing
queue-limit dscp 16 percent 80
queue-limit dscp 24 percent 90
queue-limit dscp 48 percent 100
queue-limit dscp 56 percent 100
(total drops) 0
(bytes output) 0
bandwidth remaining 10%
queue-buffers ratio 10
Class-map: AutoQos-4.0-Output-Multimedia-Conf-Queue (match-any)
0 packets
Match: dscp af41 (34) af42 (36) af43 (38)
0 packets, 0 bytes
5 minute rate 0 bps
Match: cos 4
0 packets, 0 bytes
5 minute rate 0 bps
Queueing
(total drops) 0
(bytes output) 0
bandwidth remaining 10%
queue-buffers ratio 10
Class-map: AutoQos-4.0-Output-Trans-Data-Queue (match-any)
0 packets
Match: dscp af21 (18) af22 (20) af23 (22)
0 packets, 0 bytes
5 minute rate 0 bps
Match: cos 2
0 packets, 0 bytes
5 minute rate 0 bps
Queueing
(total drops) 0
(bytes output) 0
bandwidth remaining 10%
queue-buffers ratio 10
Class-map: AutoQos-4.0-Output-Bulk-Data-Queue (match-any)
0 packets
Match: dscp af11 (10) af12 (12) af13 (14)
0 packets, 0 bytes
5 minute rate 0 bps
Match: cos 1
0 packets, 0 bytes
5 minute rate 0 bps
Queueing
(total drops) 0
(bytes output) 0
bandwidth remaining 4%
queue-buffers ratio 10
Class-map: AutoQos-4.0-Output-Scavenger-Queue (match-any)
0 packets
Match: dscp cs1 (8)
0 packets, 0 bytes
5 minute rate 0 bps
Queueing
(total drops) 0
(bytes output) 0
bandwidth remaining 1%
queue-buffers ratio 10
Class-map: AutoQos-4.0-Output-Multimedia-Strm-Queue (match-any)
0 packets
Match: dscp af31 (26) af32 (28) af33 (30)
0 packets, 0 bytes
5 minute rate 0 bps
Queueing
(total drops) 0
(bytes output) 0
bandwidth remaining 10%
queue-buffers ratio 10
Class-map: class-default (match-any)
0 packets
Match: any
0 packets, 0 bytes
5 minute rate 0 bps
Queueing
(total drops) 0
(bytes output) 0
bandwidth remaining 25%
queue-buffers ratio 25
The following is an example of the auto qos voip cisco-softphone command and the applied policies and class maps:
Device(config)# interface hundredgigabitethernet1/0/21
Device(config-if)# auto qos voip cisco-softphone
Device(config-if)# end
Device# show policy-map interface hundredgigabitethernet1/0/21
Hundredgigabitethernet1/0/21
Service-policy input: AutoQos-4.0-CiscoSoftPhone-Input-Policy
Class-map: AutoQos-4.0-Voip-Data-Class (match-any)
0 packets
Match: dscp ef (46)
0 packets, 0 bytes
5 minute rate 0 bps
Match: cos 5
0 packets, 0 bytes
5 minute rate 0 bps
QoS Set
dscp ef
police:
cir 128000 bps, bc 8000 bytes
conformed 0 bytes; actions:
transmit
exceeded 0 bytes; actions:
set-dscp-transmit dscp table policed-dscp
conformed 0000 bps, exceed 0000 bps
Class-map: AutoQos-4.0-Voip-Signal-Class (match-any)
0 packets
Match: dscp cs3 (24)
0 packets, 0 bytes
5 minute rate 0 bps
Match: cos 3
0 packets, 0 bytes
5 minute rate 0 bps
QoS Set
dscp cs3
police:
cir 32000 bps, bc 8000 bytes
conformed 0 bytes; actions:
transmit
exceeded 0 bytes; actions:
set-dscp-transmit dscp table policed-dscp
conformed 0000 bps, exceed 0000 bps
Class-map: AutoQos-4.0-Multimedia-Conf-Class (match-any)
0 packets
Match: access-group name AutoQos-4.0-Acl-MultiEnhanced-Conf
0 packets, 0 bytes
5 minute rate 0 bps
QoS Set
dscp af41
police:
cir 5000000 bps, bc 156250 bytes
conformed 0 bytes; actions:
transmit
exceeded 0 bytes; actions:
drop
conformed 0000 bps, exceed 0000 bps
Class-map: AutoQos-4.0-Bulk-Data-Class (match-any)
0 packets
Match: access-group name AutoQos-4.0-Acl-Bulk-Data
0 packets, 0 bytes
5 minute rate 0 bps
QoS Set
dscp af11
police:
cir 10000000 bps, bc 312500 bytes
conformed 0 bytes; actions:
transmit
exceeded 0 bytes; actions:
set-dscp-transmit dscp table policed-dscp
conformed 0000 bps, exceed 0000 bps
Class-map: AutoQos-4.0-Transaction-Class (match-any)
0 packets
Match: access-group name AutoQos-4.0-Acl-Transactional-Data
0 packets, 0 bytes
5 minute rate 0 bps
QoS Set
dscp af21
police:
cir 10000000 bps, bc 312500 bytes
conformed 0 bytes; actions:
transmit
exceeded 0 bytes; actions:
set-dscp-transmit dscp table policed-dscp
conformed 0000 bps, exceed 0000 bps
Class-map: AutoQos-4.0-Scavanger-Class (match-any)
0 packets
Match: access-group name AutoQos-4.0-Acl-Scavanger
0 packets, 0 bytes
5 minute rate 0 bps
QoS Set
dscp cs1
police:
cir 10000000 bps, bc 312500 bytes
conformed 0 bytes; actions:
transmit
exceeded 0 bytes; actions:
drop
conformed 0000 bps, exceed 0000 bps
Class-map: AutoQos-4.0-Signaling-Class (match-any)
0 packets
Match: access-group name AutoQos-4.0-Acl-Signaling
0 packets, 0 bytes
5 minute rate 0 bps
QoS Set
dscp cs3
police:
cir 32000 bps, bc 8000 bytes
conformed 0 bytes; actions:
transmit
exceeded 0 bytes; actions:
drop
conformed 0000 bps, exceed 0000 bps
Class-map: AutoQos-4.0-Default-Class (match-any)
0 packets
Match: access-group name AutoQos-4.0-Acl-Default
0 packets, 0 bytes
5 minute rate 0 bps
QoS Set
dscp default
police:
cir 10000000 bps, bc 312500 bytes
conformed 0 bytes; actions:
transmit
exceeded 0 bytes; actions:
set-dscp-transmit dscp table policed-dscp
conformed 0000 bps, exceed 0000 bps
Class-map: class-default (match-any)
0 packets
Match: any
0 packets, 0 bytes
5 minute rate 0 bps
Service-policy output: AutoQos-4.0-Output-Policy
queue stats for all priority classes:
Queueing
priority level 1
(total drops) 0
(bytes output) 0
Class-map: AutoQos-4.0-Output-Priority-Queue (match-any)
0 packets
Match: dscp cs4 (32) cs5 (40) ef (46)
0 packets, 0 bytes
5 minute rate 0 bps
Match: cos 5
0 packets, 0 bytes
5 minute rate 0 bps
Priority: 30% (300000 kbps), burst bytes 7500000,
Priority Level: 1
Class-map: AutoQos-4.0-Output-Control-Mgmt-Queue (match-any)
0 packets
Match: dscp cs2 (16) cs3 (24) cs6 (48) cs7 (56)
0 packets, 0 bytes
5 minute rate 0 bps
Match: cos 3
0 packets, 0 bytes
5 minute rate 0 bps
Queueing
queue-limit dscp 16 percent 80
queue-limit dscp 24 percent 90
queue-limit dscp 48 percent 100
queue-limit dscp 56 percent 100
(total drops) 0
(bytes output) 0
bandwidth remaining 10%
queue-buffers ratio 10
Class-map: AutoQos-4.0-Output-Multimedia-Conf-Queue (match-any)
0 packets
Match: dscp af41 (34) af42 (36) af43 (38)
0 packets, 0 bytes
5 minute rate 0 bps
Match: cos 4
0 packets, 0 bytes
5 minute rate 0 bps
Queueing
(total drops) 0
(bytes output) 0
bandwidth remaining 10%
queue-buffers ratio 10
Class-map: AutoQos-4.0-Output-Trans-Data-Queue (match-any)
0 packets
Match: dscp af21 (18) af22 (20) af23 (22)
0 packets, 0 bytes
5 minute rate 0 bps
Match: cos 2
0 packets, 0 bytes
5 minute rate 0 bps
Queueing
(total drops) 0
(bytes output) 0
bandwidth remaining 10%
queue-buffers ratio 10
Class-map: AutoQos-4.0-Output-Bulk-Data-Queue (match-any)
0 packets
Match: dscp af11 (10) af12 (12) af13 (14)
0 packets, 0 bytes
5 minute rate 0 bps
Match: cos 1
0 packets, 0 bytes
5 minute rate 0 bps
Queueing
(total drops) 0
(bytes output) 0
bandwidth remaining 4%
queue-buffers ratio 10
Class-map: AutoQos-4.0-Output-Scavenger-Queue (match-any)
0 packets
Match: dscp cs1 (8)
0 packets, 0 bytes
5 minute rate 0 bps
Queueing
(total drops) 0
(bytes output) 0
bandwidth remaining 1%
queue-buffers ratio 10
Class-map: AutoQos-4.0-Output-Multimedia-Strm-Queue (match-any)
0 packets
Match: dscp af31 (26) af32 (28) af33 (30)
0 packets, 0 bytes
5 minute rate 0 bps
Queueing
(total drops) 0
(bytes output) 0
bandwidth remaining 10%
queue-buffers ratio 10
Class-map: class-default (match-any)
0 packets
Match: any
0 packets, 0 bytes
5 minute rate 0 bps
Queueing
(total drops) 0
(bytes output) 0
bandwidth remaining 25%
queue-buffers ratio 25
You can verify your settings by entering the show auto qos interface
interface-id privileged EXEC command.