Multicast And Smlt Guidelines; Triangle Topology Multicast Guidelines - Avaya 8800 Planning And Engineering, Network Design

As in the previous IGMP interaction with DVMRP, you can surmount this problem in two different
ways:
• Configure ports P1 and P2 as mrouter ports on the IGMP Snoop VLAN.
• Configure switches A, B, and C to run Multicast Router Discovery on their common VLANs.

Multicast and SMLT guidelines

The following sections provide configuration guidelines for multicast SMLT networks.
For more information about SMLT topologies, see
Routing Switch 8800/8600 Configuration — Link Aggregation, MLT, and SMLT, NN46205-518.
Multicast and SMLT guidelines navigation
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Triangle topology multicast guidelines

• Square and full-mesh topology multicast guidelines
• SMLT and multicast traffic issues
• PIM-SSM over SMLT/RSMLT
• Static-RP in SMLT using the same CLIP address
Triangle topology multicast guidelines
A triangle design is an SMLT configuration in which you connect edge switches or SMLT clients to
two aggregation switches. Connect the aggregation switches together with an interswitch trunk that
carries all the split multilink trunks configured on the switches.
The following triangle configurations are supported:
• a configuration with Layer 3 PIM-SM routing on both the edge and aggregation switches
• a configuration with Layer 2 snooping on the client switches and Layer 3 routing with PIM-SM
on the aggregation switches
To avoid using an external querier to provide correct handling and routing of multicast traffic to the
rest of the network, Avaya recommends that you use the triangle design with IGMP Snoop at the
client switches. Then use multicast routing (DVMRP or PIM) at the aggregation switches as shown
in the following figure.
June 2016
SMLT topologies
on page 221
on page 223
on page 225
on page 230
Planning and Engineering — Network Design
Comments on this document? infodev@avaya.com
Multicast and SMLT guidelines
on page 84 or Avaya Ethernet
on page 222
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