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Monitoring MLD Groups
Purpose
Display information about statically joined and directly connected groups learned through MLD.
Action
To display statically joined and directly connected groups learned through MLD without OIF mapping:
host1:boston# show ipv6 mld groups
Grp Address Interface State Reporter ExpTim oldHTo
------------------- ---------------------- -------- --------------- ------ ------
ff0e::1 ATM2/0.15 Version2 fe80::90:1a02:1 54 0
640:91d
ff0e::4:1 ATM2/0.15 Version2 fe80::90:1a02:1 54 0
640:91d
Included Sources:
51::1 54
51::2 54
Counts: 2 version-2, 0 version-1, 0 check state, 0 disabled
(2 total)
0 excluded
Source-groups: 2 included, 0 excluded
To display statically joined and directly connected groups learned through MLD with OIF mapping:
host1:boston# show ipv6 mld groups
Grp Address Interface State Reporter ExpTim oldHTo
------------------- ---------------------- -------- --------------- ------ ------
ff3e::1 ATM5/0.12 Version2 fe80::f7:0:91a: 377 0
0
oif-map OIFMAP ATM5/0.
121
ff3e::1 ATM5/0.13 Version2 fe80::f7:0:a1a: 369 0
0
oif-map OIFMAP ATM5/0.
121
ff3e::2 ATM5/0.12 Version2 fe80::f7:0:91a: 370 0
0
Included Sources:
10::2 oif-map OIFMAP self 370
10::10 oif-map OIFMAP ATM5/0. 370
120
10::11 oif-map OIFMAP ATM5/0. 370
121
ff3e::2 ATM5/0.13 Version2 fe80::f7:0:a1a: 373 0
0
Included Sources:
10::2 oif-map OIFMAP self 373
10::10 oif-map OIFMAP ATM5/0. 373
120
10::11 oif-map OIFMAP ATM5/0. 373
121
Counts: 4 version-2, 0 version-1, 0 check state, 0 disabled
(4 total)
0 excluded
Source-groups: 6 included, 0 excluded
Meaning
Table 67 lists the show ipv6 mld groups command output fields.
Table 67: show ipv6 mld groups Output Fields
Field Name | Field Description |
|---|---|
Grp Address | Address of the multicast group |
Interface | Interface that discovered the multicast group |
oif-map | Name of the OIF map and the mapped OIF interface, if a group or source has been mapped to an OIF |
State | MLD version of the group |
Reporter | Link-local address of the host reporting the multicast group |
ExpTim | Remaining time, in seconds, at which the router stops polling for more members of this group |
oldHTo | Remaining time at which the router stops polling for more MLDv1 members of a group. If this value is 0, the interface has received no MLDv1 reports for the group. |
Included Sources | Sources included in the multicast group |
Excluded Sources | Sources excluded from the multicast group |
Counts | Number of source-group mappings by version and state |
