Best way to advertise a default router to a stub?

[Andy White]

Hello,

I am setting up a small hub/spoke network with EIGRP as the routing protocol, what is the best way to advertise from the hub the a default route?  On the spokes I'm just using the 'eigrp stub' command.

Thanks

[antonio.guirado]

Hello,

I think that in last releases you can not set the AD for the summary route in the "ip summary-address". It is deprecated.

Please read the following link:

http://www.cisco.com/en/US/docs/ios/iproute_eigrp/command/reference/ire_s1.html#wp1059226

Please use the router command (aditionally to the ip summary-addres command in the interface mode):

summary-metric network-address subnet-mask  [bandwidth delay reliability load mtu ] [distanceadministrative-distance]

Now, you can set the metric and the AD in the same command. Metric is not derivated from the subnet metrics.

Regards.

[Peter Paluch]

Hello Antonio,

Oh, yes, you are right - thank you for pointing this out! Rated as deserved.

I went through the Command Reference and it talks only about IOS-XE. I wonder if the same change is going to happen in ordinary IOS and around which version.

Best regards,

Peter

[paul driver]

Hello Andy

If the summery or redistribute options are not feasible and this is a simple hub and spoke setup then the use of the candidate default route is still an option to consider even though as Peter has so rightly stated its not best practice but this can be controlled by the default information in/out command on the receiving spoke routers.

If again this isnt feasable and and you still require an automated way for advertising a default route you coulduse another routing protocol like RIP / OSPF  (default-information )  or even ODR which requires no routing protocol only CDP

Res
Paul

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