This command enables the uRPF feature. When the uRPF check is enabled, the route-table is checked for source and destination IP match in parallel. For this reason, the route table capacity is reduced once this feature is enabled. A message to this effect is displayed after issuing this command. This command enables the mode for both IPv4 and IPv6.
This command also causes the IP routing to be disabled and enabled, if it was enabled prior to issuing the command.
| Format | system urpf enable |
| Mode | Global Config |
Example:
(Routing) #configure (Routing) #system urpf enable Warning! Enabling the system uRPF mode toggles the global routing mode in all VRFs,disrupting the L3 forwarding plane and control plane for few seconds.Enabling this mode also reduces the Route Table capacity.
