ip route default 425

ip route default

3500

9000

9400

3900

9300

For CoreBuilder 9000: Applies to Layer 3 switching modules only.

Adds a default route to the routing table immediately.

Valid Minimum Abbreviation

ip route de

Important Considerations

If you define a default route, the system uses it to forward packets that do not match any other routing table entry. The system can learn a route through the routing protocol, or you can statically configure a default route.

The system can learn a default route.

If the routing table does not contain a default route, the system cannot forward a packet that does not match any other routing table entry. When the system drops the packet, it sends an Internet Control Message Protocol (ICMP) destination unreachable message to the host that sent the packet.

On the CoreBuilder 3500 or the CoreBuilder 9000 Layer 3 module, you establish a static sink default route, so that the system can advertise itself as a default router. The static sink default route is not used in any of the system’s forwarding decisions because it does not have a valid next-hop gateway, but it can be advertised to all of the system’s neighbors (unless you establish IP policies to prevent the advertisement).

Defining a static sink default route causes the route to be advertised through any IP protocols that you have configured on the system (for example, Open Shortest Path First (OSPF) and RIP). For more information about static sink default routes, see the Implementation Guide for the CoreBuilder 3500 or for the CoreBuilder 9000.

Options

Prompt

Description

Possible Values

[Default]

 

 

 

 

 

Gateway IP

IP address of the

A valid IP address

address

route that you want

0.0.0.0 (static sink

 

 

to add as the default

 

 

 

 

default route)

 

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3Com 3500 manual Ip route default, Adds a default route to the routing table immediately