Command Line Reference Guide

1054 | PIM-Sparse Mode (PIM-SM)
www.dell.com | support.dell.com
no ip pim snooping dr-flood
e
x
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
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.
Related
Commands
show ip pim bsr-router
c e s
View information on the Bootstrap router.
Syntax
show ip pim bsr-router
Command Modes
EXEC
EXEC Privilege
Command
History
Example E600-7-rpm0#show ip pim bsr-router
PIMv2 Bootstrap information
This system is the Bootstrap Router (v2)
BSR address: 7.7.7.7 (?)
Uptime: 16:59:06, BSR Priority: 0, Hash mask length: 30
Next bootstrap message in 00:00:08
This system is a candidate BSR
Candidate BSR address: 7.7.7.7, priority: 0, hash mask length: 30
Version 8.4.1.1 Introduced on E-Series ExaScale
ip pim snooping Enable PIM-SM snooping.
Version 8.1.1.0 Introduced on E-Series ExaScale
Version 7.8.1.0 Introduced on S-Series