Administrator Guide

Version Description
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.
8.3.19.0 Introduced on the S4820T.
8.3.12.0 Introduced on the S4810.
8.1.1.0 Introduced on the E-Series.
Usage Information This command is applicable to last hop routers on the shared tree towards the rendezvous point (RP).
no ip pim snooping dr-ood
Disable the ooding of multicast packets to the PIM designated router.
Syntax
no ip pim snooping dr-flood
To re-enable the ooding of multicast packets to the PIM designated router, use the ip pim snooping dr-
flood command.
Defaults Enabled.
Command Modes CONFIGURATION
Command History
This guide is platform-specic. For command information about other platforms, see the relevant Dell Networking
OS Command Line Reference Guide.
Version Description
9.8(0.0P5) Introduced on the S4048-ON.
9.8(0.0P2) Introduced on the S3048-ON.
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.
Usage Information
By default, when you enable PIM-SM snooping, a switch oods all multicast trac to the PIM designated router
(DR), including unnecessary multicast packets. To minimize the trac sent over the network to the designated
router, you can disable designated-router flooding.
When designated-router ooding is disabled, PIM-SM snooping only forwards the multicast trac, 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 ood is not disabled (default setting):
• Multicast trac is transmitted on the egress port towards the PIM DR if the port is not the incoming interface.
1202 PIM-Sparse Mode (PIM-SM)