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Vlan Select & Layer 2 Multicast optimization

Rasika Nayanajith
VIP Alumni
VIP Alumni

I am going to implement this vlan select feature in my campus network. We are running on 7.3 & planning to move into 7.4 WLC code as well. I use below reference document for this task.

WLC 7.2 VLAN Select and Multicast Optimization Features Deployment Guide

I am bit confuse about layer 2 multicast optimization. Document says we can enable/disable by using below CLI commands. "

config network multicast l2mcast <enable|disable > <interface>"

I have 4 interfaces called student-wireless-1 to 4 (vlan 1161-1164) map into single interface group. For layer 3 multicast I will make vlan 1161 as the multicast interface with "multicast vlan feature" enabled. For layer 2 what should I do ?  Is layer 2 multicast enable on all these interfaces by default ? If so should I disable l2 multicast on 3 of these interfaces like below ? Would there be any issue of disabling this layer 2 multicast on those interfaces ?

config network multicast l2mcast disable student-wireless-2

config network multicast l2mcast disable student-wireless-3

config network multicast l2mcast disable student-wireless-4

If it is not enabled by default, shoud I go ahead enable it on one interface like below ?

config network multicast l2mcast enable student-wireless-1

If someone can explain this that would be highly appreciated.

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