32.4.2 Checking MLD snooping

The following describes the MLD snooping contents to be checked when MLD snooping functionality is used.

<Structure of this section>

(1) After configuration setting

Execute the show mld-snooping command to check that the settings related to MLD snooping are correct.

Figure 32-4: Displays MLD snooping setting status.
> show mld-snooping 100 Date 20XX/02/01 15:20:00 UTC VLAN: 100 IP address: fe80::b1 Querier: enable MLD querying system: fe80::b1 Querier version: V1 IPv6 Multicast routing: Off Querier version: V2 Port(5): 0/1-5 Mrouter-port: 0/1,3 Group Counts: 3

Figure 32-4: Displays MLD snooping setting status.

> show mld-snooping 100
Date 20XX/02/01 15:20:00 UTC
VLAN: 100
  IP address: fe80::b1    Querier: enable
  MLD querying system: fe80::b1
  Querier version: V1
  IPv6 Multicast routing: Off
  Querier version: V2
  Port(5): 0/1-5
  Mrouter-port: 0/1,3
  Group Counts: 3

(2) Confirmation during operation

Execute the following command to check the status of MLD snooping during operation.

Use the show mld-snooping group command to check learned MAC addresses, IPv6 multicast addresses forwarded within a VLAN, and a list of forwarding destination port statuses.

Figure 32-5: Result of executing show mld-snooping group command
> show mld-snooping group 100 Date 20XX/02/01 15:20:00 UTC VLAN: counts: 1 VLAN: 100 Group counts: 2 IPv6 Multicast routing: Off Group Address MAC Address Version Mode ff35::1 3333:0000:0001 V1,V2 EXCLUDE Port-list:0/1-3 ff35::2 3333:0000:0002 V2 EXCLUDE Port-list:0/1-2

Figure 32-5: Result of executing show mld-snooping group command

> show mld-snooping group 100
Date 20XX/02/01 15:20:00 UTC
VLAN: counts: 1
VLAN: 100  Group counts: 2  IPv6 Multicast routing: Off
  Group Address     MAC Address         Version      Mode
  ff35::1           3333:0000:0001      V1,V2        EXCLUDE
    Port-list:0/1-3
  ff35::2           3333:0000:0002      V2           EXCLUDE
    Port-list:0/1-2

Use the show mld-snooping port command to check the participation group display example for each port.

Figure 32-6: Result of executing show mld-snooping port command
> show mld-snooping port 0/1 Date 20XX/12/01 15:20:00 UTC Port 0/1 VLAN counts: 1 VLAN: 100 Group counts: 2 Group Address Last Reporter Uptime Expires ff35::1 fe80::b2 00:10 04:10 ff35::2 fe80::b3 02:10 03:00

Figure 32-6: Result of executing show mld-snooping port command

> show mld-snooping port 0/1
Date 20XX/12/01 15:20:00 UTC
Port  0/1  VLAN counts: 1
  VLAN: 100  Group counts: 2
    Group Address      Last Reporter      Uptime     Expires 
    ff35::1            fe80::b2           00:10      04:10
    ff35::2            fe80::b3           02:10      03:00