Enable Unknown Multicast Traffic Flooding with IGMP Snooping Enabled
- Tracy Yang (Unlicensed)
Background
When IGMP snooping is enabled, unknown multicast traffic can only be forwarded to the router ports by default. This causes the loss of protocol packets like mDNS or legacy protocols like AppleTalk since packets are not flooded to all ports of the VLAN. To solve this problem, users can enable the function of unknown multicast traffic flooding in a VLAN with IGMP snooping enabled.
The following command can be used:
set protocols igmp-snooping vlan-id <vlan-id> unregistered flood-all <true | false>
When set to true, the function is enabled. Unknown multicast traffic can be flooded to all the ports in a VLAN with IGMP snooping enabled.
This function is disabled by default. Unknown multicast traffic can be forwarded to the router ports.
Examples
- Enable unknown multicast traffic flooding in a VLAN with IGMP snooping enabled.
admin@Xorplus# set protocols igmp-snooping vlan-id 100 unregistered flood-all true admin@Xorplus# commit
- Disable unknown multicast traffic flooding in a VLAN with IGMP snooping enabled.
admin@Xorplus# set protocols igmp-snooping vlan-id 100 unregistered flood-all false admin@Xorplus# commit
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