reverse-path-check

Enables uRPF for all Layer 3 routes.
Syntax
reverse-path-check
no reverse-path-check
Command Default

Reverse path check is not enabled on the device.

Modes

Global configuration mode

Usage Guidelines

On ICX devices, this command enables the uRPF command line interface and hardware settings.

You must reload the device for the reverse path check setting changes to take effect. Enabling reverse path check on ICX devices reduces the following system-max values by half:

  • ip-route
  • ip6-route
  • ip-route-default-vrf
  • ip6-route-default-vrf
  • ip-route-vrf
  • ip6-route-vrf

You should configure these values after reloading. You should adjust or remove the max-route configuration in VRFs before reload.

The no form of the command disables the reverse path check functionality.

Note: Disabling reverse path check doubles the system-max values on ICX devices.
Examples

The following example enables unicast Reverse Path Forwarding globally. 

device(config)# reverse-path-check
History
Release version Command history
08.0.30 This command was introduced.
08.0.40 Removed reference to ICX 6610 devices.
Parent topic: Commands O, P, Q, R, and Sa through Sh