Configuring a default static route

About this task

The default route specifies a route to all networks for which there are no explicit routes in the forwarding information base or the routing table. This route has a prefix length of zero (RFC 1812). You can configure the switch with a static default route, or they can learn it through a dynamic routing protocol.

To create a default static route, you configure the destination address and subnet mask to 0.0.0.0.

Note

When you configure a static route with a next-hop-vrf context, you can specify a next-hop IP address that is a locally owned VRRP IP address of the system itself. However, this is not a supported configuration. The best practice is to implement an alternative method of inter-vrf route sharing, such as route redistribution or ISIS accept polices.

Note

As a best practice, do not configure static routes on a DvR Leaf node unless the configuration is for reachability to a management network using a Brouter port.

You cannot configure the preference of static routes on a Leaf node.

1. Enter either Global Configuration mode or VRF Router Configuration mode for a specific VRF context:

   enable

   configure terminal

   Optional: router vrf WORD<1-16>

2. Create a default static route:

   ip route 0.0.0.0 0.0.0.0 <A.B.C.D> weight <1–65535>

3. Enable a default static route:

   ip route 0.0.0.0 0.0.0.0 <A.B.C.D> enable [next-hop-vrf WORD<1-16>]

4. Configure other default static route parameters as required.

Example

Create a default static route and enable the default static route.

Switch:1>enable
Switch:1>configure terminal
Switch:1(config)#ip route 0.0.0.0 0.0.0.0 192.0.2.128 weight 100
Switch:1(config)#ip route 0.0.0.0 0.0.0.0 192.0.2.128 enable