Spbm Multicast Architecture; Large Data Center Architecture - Avaya 8800 Planning And Engineering, Network Design

SPBM multicast architecture

Today's networks either have inefficient bridged IP Multicast networks (IGMP) or IP Multicast
networks that require multiple protocols that are complex to configure and operate. Release 7.2 of
the ERS 8800/8600 builds on the simplicity introduced with Avaya VENA using SPBM for the control
plane with support for Bridged and Routed IP Multicast traffic without the inefficiencies or
complexities that exist today.
This new functionality now extends the SPBM IS-IS control plane to additionally exchange IP
Multicast stream advertisement and membership information, which means that you can now use
SPBM for L2 (Unicast, Broadcast, Multicast) virtualization as well as L3 (Unicast, Multicast) routing
and forwarding virtualization.
There are three operational models supported with IP Multicast over SPBM:
1. Layer 2 Virtual Services Network with IGMP support on the access networks for optimized
forwarding of IP Multicast traffic in a bridged network (L2 VSN with Multicast)
2. IP Multicast routing support for Global Routing Table using SPB in the core and IGMP on the
access (IP Shortcuts with Multicast)
3. Layer 3 Virtual Services Network with VRF based IP Multicast routing support over SPB in
the core and IGMP on the access (L3 VSN with Multicast)
IP multicast over SPBM uses Backbone Edge Bridges (BEB) to act as senders and receivers of
data. Internet Group Management Protocol (IGMP) handles group membership registration to
enable members to receive data. IGMP snooping listens to conversations between hosts and
routers, and maintains a table of links requiring IP multicast streams. The BEBs also act as IGMP
queriers and send out periodic IGMP queries. The IGMP querier enables the creation of the link
table. Once the query is received, data is sent over the SPBM cloud.
Note:
SPBM does not support multicast routing in Release 7.1. (You must upgrade to Release 7.2.)
However, you can keep a traditional SMLT/OSPF/PIM design operating in parallel to SPBM. For
more information on restrictions, see
For important information on IP multicast over SPBM, see Avaya Ethernet Routing Switch
8800/8600 Configuration — Shortest Path Bridging (NN46205–525).
Related links
SPBM reference architectures

Large data center architecture

SPBM supports data centers with IP Shortcuts, L2 VSNs, or L3 VSNs. If you are using vMotion, then
Layer 2 must be used between data centers (L2 VSN). With L2 VSNs, you can simply add an IP
addresses to the VLAN on both data centers and run VRRP between them to allow the ESX server
to route to the rest of the network.
June 2016
Restrictions and limitations
on page 148
Planning and Engineering — Network Design
Comments on this document? infodev@avaya.com
SPBM reference architectures
on page 169.
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