show ipv6 multicast mcache

Displays information in the IPv6 multicast forwarding mcache (multicast listening discovery [MLD]).
Syntax
show ipv6 multicast [ cluster ] mcache [ group-address | vlan vlan-id ]
Parameters
cluster
Specifies a Multi-Chassis Trunking (MCT) cluster.
group-address
Specifies the address of the multicast group.
vlan vlan-id
Specifies a VLAN.
Modes

Privileged EXEC mode

The show ipv6 multicast mcache command displays the following information:

Output Field

Description

(source group):

The source and group addresses of this data stream. (* group) means match group only; (source group) means match both.

For snooping when it is MAC-based, Only *,G entries will be present in multicast mcache output for ipv4 and ipv6. S,G entries will not be present.

cnt

The number of packets processed in software.

OIF

Output interfaces.

age

The mcache age in seconds. The mcache is reset to 0 if traffic continues to arrive, otherwise it is aged out when it reaches the time defined by the ipv6 multicast mcache-age command.

uptime

The up time of this mcache in seconds.

l2mc (or ipmc)

The hardware entry which has the list of replication ports.

Note: In the ICX 7750, ICX 7650, and ICX 7850 devices, l2mc is replaced with ipmc in the output.

ref-cnt

The number of mcaches using this IPMC.

Examples

This example shows information in the multicast forwarding mcache: 

Device#show ipv6 multicast mcache
Example:
    (S G) (MAC ADDR) cnt=: SRC and GRP IPv4/IPv6 address,
    Multicast Mac address, cnt is number of SW processed packets
    OIF: 1/1/22 TR(1/1/32,1/1/33), TR is trunk, 1/1/32 primary, 1/1/33 output
IPv6 Multicast Forwarding Mode: MAC
Total Multicast Cache: 11
vlan 4089, 11 caches. 
1    (* ff1e::5:6)  (3333.0005.0006) cnt=595  
      OIF: tag e1/1/2                         
     age=29s up-time=4497s, change=560s l2mc=258 (ref-cnt=1) 
2    (* ff1e::5:7)  (3333.0005.0007) cnt=1602
     OIF: tag e1/1/2 
     age=23s up-time=4497s, change=562s l2mc=258 (ref-cnt=1)

The following example shows information in the multicast forwarding mcache when data arrives locally. 

Device#show ipv6 multicast cluster mcache 
Example:
    (S G) (MAC ADDR) cnt=: SRC and GRP IPv4/IPv6 address,
    Multicast Mac address, cnt is number of SW processed packets
    OIF: 1/1/22 TR(1/1/32,1/1/33), TR is trunk, 1/1/32 primary, 1/1/33 output
         [1,10]: [1 - has local oif, 10 - ICL due to CCEP count]
IPv6 Multicast Forwarding Mode: MAC
Total Multicast Cache: 1
vlan 11, 1 caches. 
1    (* ff1e::1:1)  (3333.0001.0001) cnt=7
     OIF: tag e1/1/35 [1,0] tag e1/1/5 [1,0] tag lg130 [0,1] tag lg1 [1,0] 
     age=27s up-time=112s, change=112s l2mc=1027 (ref-cnt=1)
History
Release version Command history
08.0.92 The command output was modified.
Parent topic: Show Commands