The Router

The current firmware implementation supports a single default Virtual Routing and Forwarding (VRF) router named global and up to 128 VRF instances on the S- and K-Series and up to 16 VRF instances on the 7100-Series, depending upon your system. See Virtual Routing and Forwarding (VRF) Configuration for VRF feature and configuration details.

There are two ways of accessing the global VRF router configuration:

• Directly from global configuration mode, accessed by entering the configure command from the system command mode
• First entering router command mode from system command mode using the router command, specifying global as the name of the router, followed by entering the configure command to gain access to the router configuration mode

To enter a non-global VRF router instance, use the router command, specifying the name of the VRF instance to configure, followed by entering the configure command to gain access to the router configuration mode for that VRF instance.

Once in either router configuration or global configuration command mode, the same set of router configuration commands are available to you.

Use the clear router vrf command to clear the routing configuration for the global router or the specified VRF router instance on the device. This is a very powerful command that should only be used if you intend to completely clear all router and interface configuration for the specified VRF router. Unless attached via a direct console connection, loss of management connectivity to the VRF router should be expected after using the clear router vrf command.