Design Reference

Table Of Contents
Figure 21: Multicast SMLT square 2
In the preceding figure, both of the switch cluster cores performs Layer 3 multicast routing, while the
edge devices are Layer 2 IGMP.
Use an edge device that supports a form of link aggregation. Disable spanning tree on the link
aggregation group on the edge devices. Enable either the VRRP BackupMaster or RSMLT Layer 2
Edge on the switch cluster cores. Do not enable VRRP on the RSMLT VLAN between switch cluster
cores.
Layer 3 switch clustering and multicast SMLT
68 Network Design Reference for Avaya VSP 4000 Series June 2015
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