Users Guide

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.
S4048–ON
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, see
the relevant Dell Networking OS Command Line Reference Guide.
Version Description
9.10(0.1) Introduced on the S6010-ON and S4048T-ON.
9.8(1.0) Introduced on the Z9100-ON.
9.8(0.0P5) Introduced on the S4048-ON.
9.8(0.0P2) Introduced on the S3048-ON.
9.5(0.1) Introduced on the Z9500.
PIM-Sparse Mode (PIM-SM) 1526