Chapter 25: Multicast
STANDARD Revision 1.0 C4® CMTS Release 8.3 User Guide
© 2016 ARRIS Enterprises LLC. All Rights Reserved. 780
Independent Multicast.) PIM-SSM is a subset of the multicast routing protocol PIM Sparse Mode (SM) as defined in RFC
4601.
To perform this filtering the SSM protocol performs a Reverse Path Forward (RPF) lookup on the source IP address of the
multicast channel. This routing table search yields the RPF next-hop and ingress router interface for the SSM channel.
Multicast Routing Configurations
The C4/c CMTS Multicast routing supports the following configurations:
ASM Configuration — IGMPv2 multicast clients on C4/c CMTS cable-side interfaces and IGMP proxy on the network-side
interfaces.
For ASM, the following configuration is supported:
IGMPv2 or IGMPv3 host on the network side
IGMPv3 router/querier on the cable side
Proxy IGMPv2 or IGMPv3 joins received on the cable side to the network side
MDF enabled mac-domain
IGMPv2 or IGMPv3 hosts (CPE)
SSM Configuration — IGMPv3 SSM multicast clients on C4/c CMTS cable-side interfaces and PIM-SSM on C4/c CMTS
network-side interfaces.
For SSM, the supported configuration is:
PIM-SSM on the network side
PIM-SSM on the cable side as passive
or alternatively to PIM-SSM, Proxy IGMPv3 joins received on the cable side to the network side (IGMPv3 host
configured on the network side)
IGMPv3 router/querier on the cable side
MDF-enabled mac-domain
IGMPv3 clients (CPE)
Restrictions
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