Avaya 8800 Planning And Engineering, Network Design page 227

Multicast and SMLT guidelines
Figure 109: Triangle topology with PIM-SM in the core and PIM-SSM at the edge
The following figure shows a square or full mesh topology in which one Ethernet Routing Switch
8800/8600 IST pair is running PIM-SSM in the core, and the other IST pair is running Layer 2 IGMP.
The Ethernet Routing Switch 8300 and the stackable Ethernet Routing Switches (5xxx/4500/2500)
are also running Layer 2 IGMP at the edge.
June 2016 Planning and Engineering — Network Design 227
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