UMN:CLI User Manual
V5808
468
decode: MLD decoding
encode: MLD encoding
events: MLD events
fsm: MLD Finite State Machine (FSM)
tib: MLD Tree Information Base (TIB)
no debug mld {all | decode |
encode | events | fsm | tib}
Tree Information Base (TIB) is the collection of state at a router that has been created by
receiving MLD messages from local hosts.
To display the debugging information, use the following command.
show debugging mld snooping
Shows the debugging status of MLD.
10.1.5 MLD Access Control
Multicast routers send membership query messages to determine which multicast groups
have members in the attached local networks of the router. If hosts respond to the queries,
the routers then forward all packets addressed to the multicast group to these group
members.
You can restrict hosts on a network to join multicast groups on the specified access list.
To control an access to multicast groups on an interface, use the following command.
ipv6 mld access-group WORD
Enables an MLD access-group control on an interface.
WORD: IPv6 access list name
Disables a configured MLD access-group control.
10.1.6 MLD Querier Configuration
An MLD querier is the router periodically sends a General Query message for managing
the multicast group. In MLD version1, the querier is a router with the lowest IPv6
address on the subnet. If the router hears no queries for the timeout period, it becomes
the MLD querier.
10.1.6.1 MLD Query Interval
The MLD querier sends general query messages periodically to discover which multicast
groups have members on the attached networks of the router.
To specify an interval to send MLD query messages, use the following command.