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Version Description
9.7(0.0) Introduced on the S6000-ON.
9.5(0.1) Introduced on the Z9500.
8.3.19.0 Introduced on the S4820T.
8.3.12.0 Introduced on the S4810.
8.4.1.0 Introduced on the 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.
show ip pim bsr-router
View information on the Bootstrap router.
S4820T
Syntax
show ip pim [vrf vrf-name] bsr-router
Parameters
vrf vrf-name (OPTIONAL) Enter the keyword vrf followed by the name of
the VRF to configure this setting on VRF.
NOTE: Applies to specific VRF if input is provided, else
applies to Default VRF.
Command
Modes
• EXEC
• EXEC Privilege
Command
History
This guide is platform-specific. For command information about other platforms,
refer to the relevant Dell Networking OS Command Line Reference Guide.
The following is a list of the Dell Networking OS version history for this command.
PIM-Sparse Mode (PIM-SM)
1409