Ip Route Default - 3Com SuperStack II 9300 Command Reference Manual

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)
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
Gateway IP IP address of the
address route that you want
to add as the default
destination unreachable
Possible Values
A valid IP address
0.0.0.0 (static sink
default route)
ip route default 425
message to the
[Default]
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