Configuring PIM SSM Group Ranges
The source specific multicast service
(SSM) simplifies PIM-SM by eliminating the RP and all protocols related to the RP.
Single or
multiple PIM SSM group address ranges can be configured.
- Enter global configuration mode.
- Enable PIM
- To configure SSM group ranges, use one of the following choices.
- Configure a single SSM group address. The IP address specifies the multicast address
for the SSM address range. If this is not configured, the range will default to 232/8
as assigned by the Internet Assigned Numbers Authority (IANA) for use with SSM.
device(config-router-pim)# ssm-enable range 232.1.1.1/8
- Configure multiple SSM group ranges using
an ACL. In this example, PIM uses the group addresses allowed by the ACL range, as
its
PIM SSM range. You must configure the ACL before this step.
device(config-router-pim)# ssm-enable range acl-range
- Configure a single SSM group address. The IP address specifies the multicast address
for the SSM address range. If this is not configured, the range will default to 232/8
as assigned by the Internet Assigned Numbers Authority (IANA) for use with SSM.
- To display information for PIM SSM group ranges including the ACL, use the
show ip pim sparsecommand.device(config-router-pim)# show ip pim sparse Global PIM Sparse Mode Settings Maximum Mcache : 16384 Current Count : 3 Hello interval : 30 Neighbor timeout : 105 Join/Prune interval : 60 Inactivity interval : 180 Hardware Drop Enabled : Yes Prune Wait Interval : 3 Bootstrap Msg interval : 60 Candidate-RP Msg interval : 60 Register Suppress Time : 60 Register Probe Time : 10 Register Stop Delay : 10 SSM Enabled : Yes SPT Threshold : 1 SSM Group Range : 232.0.0.0/8 Route Precedence : uc-non-default uc-default mc-non-default mc-default Slow Path Disable All : Yes Slow Path Enable SSM :Yes Slow Path Filter Acl : acl