show ip mds forwarding
To display the Multicast Forwarding Information Base (MFIB) table and forwarding information for multicast distributed switching (MDS) on a line card, use the show ip mds forwarding command in user EXEC or privileged EXEC mode.
show ip mds forwarding [group-address] [source-address]
Syntax Description
group-address |
(Optional) Address of the IP multicast group for which to display the MFIB table. |
source-address |
(Optional) Address of the source of IP multicast packets for which to display the MFIB table. |
Command Modes
User EXEC (>)
Privileged EXEC (#)
Command History
Release |
Modification |
---|---|
11.2(11)GS |
This command was introduced. |
12.2(33)SRA |
This command was integrated into Cisco IOS Release 12.2(33)SRA. |
12.2SX |
This command is supported in the Cisco IOS Release 12.2SX train. Support in a specific 12.2SX release of this train depends on your feature set, platform, and platform hardware. |
Usage Guidelines
Use this command on the line card. This command displays the MFIB table, forwarding information, and related flags and counts.
Note |
To reach the console for a line card, enter attach slot# (slot number where the line card resides). |
On a Gigabit Switched Router (GSR) only, line card commands can be executed from the Route Processor (RP) using the following syntax: execute [slot slot-number | all ] command.
The command argument is any of the line card show commands, such as show ip mds summary and show ip mds forward .
Examples
The following is sample output from the show ip mds forwarding command:
Router# show ip mds forwarding
IP multicast MDFS forwarding information and statistics:
Flags: N - Not MDFS switchable, F - Not all MDFS switchable, O - OIF Null
R - In-ratelimit, A - In-access, M - MTU mismatch, P - Register set
Interface state: Interface, Next-Hop, Mac header
(*, 224.2.170.73),
Incoming interface: Null
Pkts: 0, last used: never, Kbps: 0, fast-flags: N
Outgoing interface list: Null
(172.17.62.86, 224.2.170.73) [31]
Incoming interface: Fddi3/0/0
Pkts: 3034, last used: 00:00:00, Kbps: 0, fast-flags: M
Outgoing interface list:
The table below describes the significant fields shown in the display.
Field |
Description |
---|---|
(172.17.62.86, 224.2.170.73) [31]) |
Source and group addresses. The number in brackets is the hash bucket for the route. |
Incoming interface |
Expected interface for a multicast packet from the source. If the packet is not received on this interface, it is discarded. |
Pkts |
Total number of packets switched by the entry in the table. |
last used: |
Time when this MFIB entry was used to switch a packet. |
Kbps: |
Kilobits per second of the switched traffic. |
Outgoing interface list |
Interfaces through which packets will be forwarded. |