ip rvs-path-chk

Syntax

• default ip rvs-path-chk

• default ip rvs-path-chk mode

• ip rvs-path-chk

• ip rvs-path-chk mode exist-only

• ip rvs-path-chk mode strict

• no ip rvs-path-chk

Command Parameters

mode {strict|exist-only}

Specifies the mode for Unicast Reverse Path Forwarding (uRPF).

• In strict mode, uRPF checks whether the source IP address of the incoming packet exists in the FIB. If the incoming interface is not the best reverse path, the packet check fails and uRPF drops the packet.

• In exist-only mode, uRPF checks whether the source IP address of the incoming packet exists in the FIB. The packet is dropped only if the source address is not reachable via any interface on that router.

Default

None

Command Mode

GigabitEthernet Interface Configuration