KB.15.15

Syntax:

[no] rpf-override [source-ip-addr/mask-length] [rpf-ip-addr]

Add, edit, or delete up to eight RPF override entries. The multicast RPF override has a multicast

source address [source-ip-addr/mask-length] and an RPF address [rpf-ip-addr] pair.

The no form of the command deletes the RPF override.

NOTE: Only host-specific addresses are supported (i.e. “/32” addresses.)

[source-ip-addr] The IPv4 address of the host from which the multicast

flow originated.

[mask-length] The length, in bits, of the mask used to indicate the range

of addresses from [source-ip-addr] to which the

RPF override command applies. Currently, only a 32–bit

mask is supported, that is, only one host per entry. Eight

individual entries are supported.

[rpf-ip-addr] The IPv4 address indicating one of two distinct RPF

candidates:

1. A valid PIM neighbor address from which forwarded

multicast traffic is accepted with a source address

of [source-ip-addr].

2. A local router address on a PIM-enabled VLAN to

which [source-ip-addr] is directly connected.

The local router will assume the role of DR for this

flow and registers the flow with an RP, if configured.

Example 38 Configuring a manual multicast RPF override and saving it in the config

HP Switch(config)# ip routing

HP Switch(config)# ip multicast-routing

HP Switch(config)# router pim

HP Switch(pim)# rpf-override 10.1.1.1/32 11.2.2.1

HP Switch(pim)# write mem

Displaying configured RPF overrides

You can display the configured RPF overrides with the show command.

Syntax:

show ip pim rpf-override [source |source ip-address]

Displays the configured RPF override entries.

[source ip-address] Displays the RPF overrides for a specific IP address.

This can be useful when troubleshooting potential

RPF misconfigurations.

Displaying configured RPF overrides 79