Cisco WS-SUP32-GE-3B - Supervisor Engine 32 Software Configuration Manual page 442

Configuring Unicast Reverse Path Forwarding Check
Configuring Multiple-Path Interface Groups on a PFC3B
To configure multiple-path Unicast RPF interface groups on a PFC3B, perform this task:
Command
Step 1
Router(config)# mls ip cef rpf interface-group [0
| 1 | 2 | 3] interface1 [interface2 [interface3
[interface4]]]
Step 2
Router(config)# mls ip cef rpf interface-group
group_number
Step 3
Router(config)# end
Step 4
Router# show mls cef ip rpf
This example shows how to configure interface group 2:
Router(config)# mls ip cef rpf interface-group 2 fastethernet 3/3 fastethernet 3/4
fastethernet 3/5 fastethernet 3/6
Enabling Self-Pinging
With Unicast RPF check enabled, by default the switch cannot ping itself.
To enable self-pinging, perform this task:
Command
Step 1
Router(config)# interface {{vlan vlan_ID} |
1
{type slot/port} | {port-channel number}}
Step 2
Router(config-if)# ip verify unicast source
reachable-via any allow-self-ping
Router(config-if)# no ip verify unicast source
reachable-via any allow-self-ping
Step 3
Router(config-if)# exit
1. type = ethernet, fastethernet, gigabitethernet, or tengigabitethernet
This example shows how to enable self-pinging:
Router(config)# interface gigabitethernet 4/1
Router(config-if)# ip verify unicast source reachable-via any allow-self-ping
Router(config-if)# end
Catalyst Supervisor Engine 32 PISA Cisco IOS Software Configuration Guide, Release 12.2ZY
30-6
Chapter 30
Purpose
Configures a multiple path RPF interface group on a
PFC3B.
Removes an interface group.
Exits configuration mode.
Verifies the configuration.
Purpose
Selects the interface to configure.
Enables the switch to ping itself or a secondary address.
Disables self-pinging.
Exits interface configuration mode.
Configuring Network Security
OL-11439-03