Cisco ASR 9000 Series - Page 52

PurposeCommand or Action
Example:
RP/0/RSP0/CPU0:router# show pim topology
Configuring PIM-SSM for Use in a Legacy Multicast Deployment
Deploying PIM-SSM in legacy multicast-enabled networks can be problematic, because it requires changes
to the multicast group management protocols used on the various devices attached to the network. Host,
routers, and switches must all be upgraded in such cases.
To support legacy hosts and switches in a PIM-SSM deployment,Cisco ASR 9000 Series Routers offer a
configurable mapping feature. Legacy group membership reports for groups in the SSM group range are
mapped to a set of sources providing service for that set of (S,G) channels.
This configuration consists of two tasks:
Restrictions for PIM-SSM Mapping
PIM-SSM mapping does not modify the SSM group range. Instead, the legacy devices must report group
membership for desired groups in the SSM group range .
Configuring a Set of Access Control Lists for Static SSM Mapping
This tasks configures a set of access control lists (ACLs) where each ACL describes a set of SSM groups to
be mapped to one or more sources.
SUMMARY STEPS
1.
configure
2.
ipv4 access-list acl-name
3.
[sequence-number] permit source [source-wildcard]
4.
Repeat Step 3, on page 53 to add more entries to the ACL.
5.
Repeat Step 2, on page 53 through Step 4, on page 53 until you have entered all the ACLs you want to
be part of the set.
6.
commit
DETAILED STEPS
PurposeCommand or Action
configure
Step 1
Cisco ASR 9000 Series Aggregation Services Router Multicast Configuration Guide, Release 5.1.x
52
Implementing Layer-3 Multicast Routing on Cisco IOS XR Software
Configuring PIM-SSM for Use in a Legacy Multicast Deployment