From: Kulcsár
Date: Mon Oct 02 2006 - 08:12:40 ART
Hello Stephen,
1. You can use the ip default-network command. I think this is a bit outdated and not convenient to use.
2. Create a static default route and redistribute into EIGRP. Usually you cannot do at the exam if you're not allowed to use static routes, but you can use it in real life.
3. You can still use the summary-address command. Although it is not recommended, you can use it with care.
Regard,
Andras
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of Skinner, Stephen
Sent: Monday, October 02, 2006 11:07 AM
To: CCIE GroupStudy
Subject: Creating a default route in eigrp.
Hello,
I have taken the following excerpt from the 12.4 guide's on the CCO.
I have added my comments in .
You should not use the ip summary-address eigrp summarization command to generate the default route (0.0.0.0) from an interface. (OK no problem)
This causes the creation of an EIGRP summary default route to the null 0 interface with an administrative distance of 5.(Yep , I have seen it happen)
The low administrative distance of this default route can cause this route to displace default routes learned from other neighbours from the routing table.
(i.e. other routing protocol's.)
If the default route learned from the neighbours is displaced by the summary default route, or if the summary route is the only default route present, all traffic destined for the default route will not leave the router, instead, this traffic will be sent to the null 0 interface where it is dropped.
(yep I get it )
The recommended way to send only the default route out a given interface is to use a distribute-list command. You can configure this command to filter all outbound route advertisements sent out the interface with the exception of the default (0.0.0.0).
OK . My question .
With the summ-address command It actually creates the default as well as sending it out.
So What is the preferred method of creating a Default route in eigrp ? .
I cant use the "default-information" command as it only effect's if E will receive the default , not how to create it.
If I cant use the summary-address how else can I create the default.?
TIA
Stephen Skinner
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