Design Reference
Table Of Contents
- Contents
- Chapter 1: Introduction
- Chapter 2: New in this release
- Chapter 3: Network design fundamentals
- Chapter 4: Hardware fundamentals and guidelines
- Chapter 5: Optical routing design
- Chapter 6: Platform redundancy
- Chapter 7: Link redundancy
- Chapter 8: Layer 2 loop prevention
- Chapter 9: Layer 2 switch clustering and SMLT
- Chapter 10: Layer 3 switch clustering and RSMLT
- Chapter 11: Layer 3 switch clustering and multicast SMLT
- Chapter 12: Spanning tree
- Chapter 13: Layer 3 network design
- Chapter 14: SPBM design guidelines
- Chapter 15: IP multicast network design
- Multicast and VRF-Lite
- Multicast and MultiLink Trunking considerations
- Multicast scalability design rules
- IP multicast address range restrictions
- Multicast MAC address mapping considerations
- Dynamic multicast configuration changes
- IGMPv3 backward compatibility
- IGMP Layer 2 Querier
- TTL in IP multicast packets
- Multicast MAC filtering
- Guidelines for multicast access policies
- Split-subnet and multicast
- Protocol Independent Multicast-Sparse Mode guidelines
- Protocol Independent Multicast-Source Specific Multicast guidelines
- Multicast for multimedia
- Chapter 16: System and network stability and security
- Chapter 17: QoS design guidelines
- Chapter 18: Layer 1, 2, and 3 design examples
- Glossary
Chapter 11: Layer 3 switch clustering and
multicast SMLT
Switch clustering is the logical aggregation of two nodes to form one logical entity known as the
switch cluster. The two peer nodes in a switch cluster connect using a virtual interswitch trunk
(vIST). The vIST exchanges forwarding and routing information between the two peer nodes in the
cluster. This section provides guidelines for switch clusters that use multicast and Split Multilink
Trunking (SMLT).
Related Links
General guidelines on page 62
Multicast triangle topology on page 64
Square and full-mesh topology multicast guidelines on page 66
SMLT and multicast traffic issues on page 69
General guidelines
The following list identifies general guidelines to follow if you use multicast and switch clustering:
• Enable Protocol Independent Multicast - Sparse Mode (PIM-SM) on the vIST VLAN for fast
recovery of multicast. A unicast routing protocol is not required.
• Enable Internet Group Management Protocol (IGMP) snooping and proxy on the edge
switches.
The following figure shows multicast behavior in an SMLT environment. The configuration in the
following figure provides fast failover if the switch or rendezvous point (RP) fails.
62 Network Design Reference for Avaya VSP 4000 Series June 2015
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