(Optional) Configuring the SSM Group Address Range
The default Source-Specific Multicast (SSM) group address range is 232.0.0.0/8. You can manually configure the SSM group address range. Ensure that the SSM group address ranges configured on all devices in the network are identical.
Context
This configuration is optional. By default, the SSM group address range is 232.0.0.0/8.
Perform the following steps on all FWs in the PIM-SM domain:
Procedure
- Access the system view.
- Create a basic ACL and access its view.
acl [ number ] acl-number [ vpn-instance vpn-instance-name ]
- Configure rules for the basic ACL.
rule [ rule-id ] { deny | permit } source { source-ip-address { 0 | source-wildcard } | address-set address-set-name | any }
- Return to the system view.
- Access the PIM view.
pim [ vpn-instance vpn-instance-name ]
- Configure the SSM group address range.
ssm-policy basic-acl-number
Ensure that the SSM group address range of all FWs in the network is consistent.
- If a group address matches an ACL rule and the action is permit, the device determines that this group is in the SSM group address range.
- If a group address matches an ACL rule and the action is deny, the device determines that this group is not in the SSM group address range.
- If a group address does not match any ACL rule, the device determines that this group is not in the SSM group address range.
- If a specified ACL does not exist or does not contain rules, the device determines that no groups are in the SSM group address range.