Protocol Independent Multicast-Sparse Mode Guidelines; Pim-Sm And Pim-Ssm Scalability - Avaya 8800 Planning And Engineering

Multicast network design
If you must support more than 512 potential sources on separate local interfaces, configure
the vast majority as passive interfaces. Ensure that only 1 to 5 total interfaces are active
DVMRP interfaces.
You can also use passive interfaces to implement a measure of security on the network. For
example, if an unauthorized DVMRP router is attached to the network, a neighbor relationship
is not formed, and thus, no routing information from the unauthorized router is propagated
across the network. This feature also has the convenient effect of forcing multicast sources to
be directly attached hosts.

Protocol Independent Multicast-Sparse Mode guidelines

Protocol Independent Multicast-Sparse Mode (PIM-SM) uses an underlying unicast routing
information base to perform multicast routing. PIM-SM builds unidirectional shared trees rooted
at a Rendezvous Point (RP) router per group and can also create shortest-path trees per
source.
PIM-SM navigation
•

PIM-SM and PIM-SSM scalability

• PIM general requirements
• PIM and Shortest Path Tree switchover
• PIM traffic delay and SMLT peer reboot
• PIM-SM to DVMRP connection: MBR
• Circuitless IP for PIM-SM
• PIM-SM and static RP
• Rendezvous Point router considerations
• PIM-SM receivers and VLANs
• PIM network with non-PIM interfaces
PIM-SM and PIM-SSM scalability
PIM-SM and PIM-SSM support VRF-lite. You can configure up to 64 instances of PIM-SM or
PIM-SSM.
You can configure up to 1500 VLANs for PIM.
Interfaces that run PIM must also use a unicast routing protocol (PIM uses the unicast routing
table), which puts stringent requirements on the system. As a result, 1500 interfaces are not
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November 2010