Unanswered Question
May 23rd, 2008

What is the default route means in EIGRP. How it works.

Thanks in advance

I have this problem too.
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royalblues Fri, 05/23/2008 - 22:15

Do you mean how to pass on default route in EIGRP?

EIGRP does not redistribute the default route by default. However, if the network command is added to the EIGRP configuration, it redistributes a default route as a result of the ip route interface command (but not as a result of the ip route address or ip default-network command).

For example, the following configuration results in the route being passed to the EIGRP neighbors of the router.

Router(config)#interface serial 0/0/0

Router(config-if)#ip address


Router(config)#ip route serial 0/0/0


Router(config)#router eigrp 100




drnteam Fri, 05/23/2008 - 22:25

Thanks Narayan,

U cleared my path.

Ru from Mphasis Bangalore

Thanks and Regards


drnteam Sat, 05/24/2008 - 00:42

Yes, i know all the Fedex group in Mphasis, Bangalore

Eldose George

Network Engineer


Dubai Internet City

lamav Sat, 05/24/2008 - 08:10


Please excuse me, I dont mean to be a jerk, but are you sure about that? I do believe that you can redistribute a default route into EIGRP without using the network command under the eigrp process. The ip route command in global config mode, along with the redistribute static command under the eigrp process should do.

eigrp 100

redistribute static

ip route

Do you agree?


royalblues Sun, 05/25/2008 - 01:10


You are correct and you can introduce a default route with the redistribute static command.

My post was for originating a default route in EIGRP without the redistribution command. The only difference would be that in my case the default route would be an EIGRP internal route and in your case it would be treated as an external route



Giuseppe Larosa Sun, 05/25/2008 - 03:09

Hello Narayan,

with EIGRP there is also another way : using the ip default-network command. I tried it and it works.

It uses the external flag that is part of an EIGRP route data structure. This flag is set in the advertisement of the network that is declared in the ip default-network command. The meaning is that there is a gateway of last resort connected to that network.

Best Regards


lamav Sun, 05/25/2008 - 05:55


Thanks for clearing that up for me. I agree with you on the internal/external thing. Perhaps I misread your post and understood it to mean that its not possible to redistribute a static default and make it work. My bad...

Thank you for your time, and my apologies...



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