Disabling Multicast Multipath - Cisco Nexus 7000 Series Configuration Manual

Configuring PIM and PIM6
Multicast routes are used not to directly forward traffic but to make RPF checks. RPF routes for multicast
cannot be redistributed.
Note
IPv6 static multicast routes are not supported.
Before you begin
Ensure that you have installed the Enterprise Services license and enabled PIM or PIM6.
Procedure
Step 1
Step 2
Step 3
Step 4

Disabling Multicast Multipath

By default, the RPF interface for multicast is chosen automatically when there are multiple ECMP paths
available. Disabling the automatic selection allows you to specify a single RPF interface for multicast.
Procedure
Step 1
Command or Action
config t
Example:
switch# config t
switch(config)#
ip mroute{ip-addr mask | ip-prefix} {next-hop
| nh-prefix | interface} [route-preference] [vrf
vrf-name]
Example:
switch(config)# ip mroute 192.0.2.33/1
224.0.0.0/1
show ip static-route [multicast] [vrf
vrf-name]
Example:
switch(config)# show ip static-route
multicast
copy running-config startup-config [ ip-prefix
] vrfvrf-name | all
Command or Action
config t
Example:
switch# config t
switch(config)#
Cisco Nexus 7000 Series NX-OS Multicast Routing Configuration Guide
Disabling Multicast Multipath
Purpose
Enters global configuration mode.
Configures an RPF route for multicast for use
in RPF calculations. Route preference values
range from 1 to 255. The default preference is
1.
(Optional) Displays configured static routes.
(Optional) Saves configuration changes.
Purpose
Enters global configuration mode.
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