SMC Networks SMC6724L3 manual 210, Redistributing External Routes

CONFIGURING THE SWITCH

Redistributing External Routes

You can configure this router to import external routing information from other routing protocols into the autonomous system.

Router

RIP, or static routes

ASBR

OSPF

AS

Command Usage

•This router supports redistribution for both RIP and static routes.

•When you redistribute external routes into an OSPF autonomous system (AS), the router automatically becomes an autonomous system boundary router (ASBR).

•However, if the router has been manually configured as an ASBR via the General Configuration screen, but redistribution is not enabled, the router will only generate a “default” external route into the AS if it has been configured to “always” advertise a default route even if an external route does not actually exist (page 3-188).

•Metric type specifies the way to advertise routes to destinations outside the autonomous system (AS) via External LSAs. Specify Type 1 to add the internal cost metric to the external route metric. In other words, the cost of the route from any router within the AS is equal to the cost associated with reaching the advertising ASBR, plus the cost of the external route. Specify Type 2 to only advertise external route metric.

•The metric value specified for redistributed routes supersedes the Default External Metric specified in the OSPF / General Configuration screen (page 3-188).

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