Avaya 8800 Planning And Engineering page 201

Figure 88: Unicast route example
In this example, the unicast route table on 8600A learns the BSR on 8600B through VLAN 102
via OSPF. The BSR is either not learned or does not provide the RP to 8600A.
Another traffic issue can occur when the path to a source network on the aggregation switches
is the same for both switches. When the path is the same, duplicate traffic can result. The
following figure illustrates the issue and the solution.
Planning and Engineering — Network Design
Multicast and SMLT guidelines
November 2010 201