Dell Force10 S55T FTOS Command Line Reference Guide for the S55 System FTOS 8. - Page 763

Usage Information The router with the largest value assigned to an interface becomes the Designated Router. If two interfaces contain the same DR priority value, the interface with the largest interface IP address becomes the Designated Router. ip pim graceful-restart e This feature permits configuration of Non-stop Forwarding (NFS or graceful restart) capability of a PIM router to its neighbors. Syntax [ipv6] ip pim graceful-restart {helper-only | nsf [restart-time | stale-entry-time]} Parameters ipv6 helper-only nsf restart-time stale-entry-time Enter this keyword to enable graceful-restart for IPv6 Multicast Routes. Enter the keyword helper-only to configure as a receiver (helper) only by preserving the PIM status of a graceful restart PIM neighboring router. Enter the keyword nfs to configure the Non-stop Forwarding capability. (OPTIONAL) Enter the keyword restart-time followed by the number of seconds estimated for the PIM speaker to restart. Range: 30 to 300 seconds Default: 180 seconds (OPTIONAL) Enter the keyword stale-entry-time followed by the number of seconds for which entries are kept alive after restart. Range: 30 to 300 seconds Default: 60 seconds Defaults as above Command Modes CONFIGURATION Command History Version 8.2.1.0 Version 7.6.1.0 Introduced on E-Series ExaScale. Added the ipv6 option for E-Series. Introduced on E-Series Usage Information When an NSF-capable router comes up, it announces the graceful restart capability and restart duration as a Hello option. The receiving router notes the Hello option. Routers not NSF capable will discard the unknown Hello option and adjacency is not affected. When an NSF-capable router goes down, neighboring PIM speaker preserves the states and continues the forwarding of multicast traffic while the neighbor router restarts. ip pim join-filter c e s 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. Syntax ip pim join-filter ext-access-list {in | out} Remove the access list using the command no ip pim join-filter ext-access-list {in | out} PIM-Sparse Mode (PIM-SM) | 763