Dell SmartFabric OS10 User Guide Release 10.5.3

PIM neighbor filters

The PIM neighbor filter allows you to control a PIM router from forming an adjacency with a neighbor router.

By default, PIM-enabled neighbor devices exchange Hello packets at regular intervals and through these message exchanges become PIM neighbors. You can use a neighbor filter ACL to ensure that the switch accepts only the appropriate PIM neighbors. The ACL is configured on a per-interface basis to filter PIM Hello packets from sources you want to deny or permit. If the access list is applied for the neighbor filter, then the destination prefix is ignored.

To use PIM neighbor filtering on an IPv4 PIM-enabled interface, use the following command:

ip pim neighbor-filter <acl-name>