FD 100/320Gbps NT and FX NT IHub Services Guide Virtual Private LAN Service
Issue: 13 3HH-11985-AAAA-TQZZA 193
5.8.2.3 MAC learning and aging
Learning of new MAC addresses in the v-VPLS/VPLS forwarding database (FDB)
can be enabled and disabled for the service instance using the disable-learning
command.
configure service vpls <service-id> [no] disable-learning
You can change the default aging time for locally learned MAC addresses in the
forwarding database (FDB) for the v-VPLS/VPLS instance.
configure service vpls <service-id> local-age <seconds>
You can change the default aging time for remotely learned MAC addresses in the
forwarding database (FDB) for the VPLS instance.
configure service vpls <service-id> remote-age <seconds>
5.8.2.4 IGMP snooping
The following IGMP parameters can be configured:
• shutdown:
The following command administratively enables or disables IGMP snooping.
configure service vpls service-id igmp-snooping no shutdown
configure service vpls service-id igmp-snooping shutdown
When IGMP snooping is disabled:
• received IGMP messages are transparently flooded
• received multicast data streams are flooded in the v-VPLS/VPLS
• no IGMP query messages are generated
• no IGMP response messages are sent out
• dynamic multicast tree cannot be created, and related IGMP messages are
transparently flooded
• static multicast tree still can be created but will be overruled by the flooding of all
multicast streams, including the ones for which there are static multicast trees, as
long as IGMP snooping is disabled.
• The command “show mfib” will result in no entries, i.e. flooding does not make use of
the MFIB, but (static) entries actually remain in the MFIB. This can be verified by
enabling IGMP again.
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