Dell Force10 S25N-S50N FTOS Command Line Reference Guide FTOS 8.4.2.7 E-Series - Page 1109
ip pim spt-threshold, no ip pim snooping dr-flood
View all Dell Force10 S25N-S50N manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 1109 highlights
ip pim spt-threshold c e Configure PIM router to switch to shortest path tree when the traffic reaches the specified threshold value. Syntax ip pim spt-threshold value | infinity To return to the default value, enter no ip pim spt-threshold. Parameters value infinity (OPTIONAL) Enter the traffic value in kilobits per second. Default: 10 packets per second. A value of zero (0) will cause a switchover on the first packet. (OPTIONAL) To never switch to the source-tree, enter the keyword infinity. Defaults Not configured. Command Modes CONFIGURATION Command History Version 8.1.1.0 Introduced on E-Series ExaScale Usage This is applicable to last hop routers on the shared tree towards the Rendezvous Point (RP). Information no ip pim snooping dr-flood ex Disable the flooding of multicast packets to the PIM designated router. Syntax no ip pim snooping dr-flood To re-enable the flooding of multicast packets to the PIM designated router, enter the ip pim snooping dr-flood command. Defaults Enabled. Command Modes CONFIGURATION Command History Version 8.4.1.1 Introduced on E-Series ExaScale Usage Information By default, when you enable PIM-SM snooping, a switch floods all multicast traffic to the PIM designated router (DR), including unnecessary multicast packets. To minimize the traffic sent over the network to the designated router, you can disable designated-router flooding. When designated-router flooding is disabled, PIM-SM snooping only forwards the multicast traffic, which belongs to a multicast group for which the switch receives a join request, on the port connected towards the designated router. If the PIM DR flood is not disabled (default setting): • Multicast traffic is transmitted on the egress port towards the PIM DR if the port is not the incoming interface. • Multicast traffic for an unknown group is sent on the port towards the PIM DR. When DR flooding is disabled, multicast traffic for an unknown group is dropped. PIM-Sparse Mode (PIM-SM) | 1109