Administrator Guide

ip pim graceful-restart
This feature permits configuration of non-stop forwarding (NSF or graceful restart) capability on a PIM enabled router.
Syntax
ip pim graceful-restart {nsf [restart-time | stale-entry-time]}
Parameters
nsf Enter the keyword nsf to configure the non-stop forwarding capability.
NOTE: ip pim graceful-restart nsf is applicable for the entire
multicast sub-system.
restart-time (OPTIONAL) Enter the keywords restart-time followed by the number of
seconds estimated for the PIM speaker to restart. The range is 30 to 300 seconds.
The default is 180 seconds.
stale-entry-time (OPTIONAL) Enter the keywords stale-entry-time followed by the number of
seconds for which entries are kept alive after restart. The range is 30 to 300
seconds. The default is 60 seconds.
Defaults as above
Command Modes CONFIGURATION
Command
History
Version Description
9.14(0.0) Added support on the C9000.
9.0(1.3) Introduced on the S5000.
8.2.1.0 Introduced on the E-Series ExaScale. Added the ipv6 option for the E-Series.
7.6.1.0 Introduced on the E-Series.
Usage
Information
The PIM-SM component uses the graceful-restart feature to relearn the PIM JOIN messages (*,G/S,G)
from upstream neighbors. The upstream neighbors detect the RPM failover of the downstream router, on
reception of a different gen-id in the PIM-hello message. They then start to send relevant PIM JOINs to
the downstream router after establishing neighbor-ship with the new active RPM.
ip pim join-filter
Permit or deny PIM Join/Prune messages on an interface using an extended IP access list. This command prevents the PIM-SM
router from creating state based on multicast source and/or group.
C9000 Series
Syntax
ip pim [vrf vrf-name] join-filter ext-access-list
To remove the access list, use the no ip pim [vrf vrf-name] join-filter ext-access-
list command.
Parameters
vrf vrf-name (OPTIONAL) Enter the keyword vrf followed by the name of the VRF to permit or
deny PIM join or prune messages on an interface associated with that VRF.
ext-access-list Enter the name of an extended access list.
Defaults none
Command Modes
INTERFACE
INTERFACE (BATCH Mode)
Command
History
This guide is platform-specific. For command information about other platforms, see the relevant Dell
Networking OS Command Line Reference Guide.
1308 PIM-Sparse Mode (PIM-SM)