Redistributing Routes - Nortel Alteon OS 42C4911 Application Manual

Redistributing Routes

In addition to running multiple routing protocols simultaneously, Alteon OS software can
redistribute information from one routing protocol to another. For example, you can instruct
the switch to use BGP to readvertise static routes. This applies to all of the IP-based routing
protocols.
You can also conditionally control the redistribution of routes between routing domains by
defining a method known as route maps between the two domains. For more information on
route maps, see
providing policy control over whether to export OSPF routes, fixed routes, static routes, and
virtual IP address routes. For an example configuration, see
Aggregation Example" on page
Default routes can be configured using the following methods:
Import
Originate—The router sends a default route to peers if it does not have any default routes
in its routing table.
Redistribute—Default routes are either configured through the default gateway or learned
via other protocols and redistributed to peer routers. If the default routes are from the
default gateway, enable the static routes because default routes from the default gateway
are static routes. Similarly, if the routes are learned from another routing protocol, make
sure you enable that protocol for redistribution.
None
42C4911, January 2007
"What is a Route Map?" on page
185.
Alteon OS Application Guide
174. Redistributing routes is another way of
"Default Redistribution and Route
Chapter 11: Border Gateway Protocol 179