Re: EIGRP summarization

Hi Marc,

The way I understand it is that the admin distance of 5 is the default admin
distance for the discard route to null0 which is created when you do the
summary (you can actually change this when you define the summary, if you
didn't want it at all, just set the value to 255). It's a low distance by
default so another routing protocol doesn't override it. To other eigrp
routers its just another internal route so it matches the default admin
distance for that.

Within the eigrp process, you could use the distance command for recieved
internal eigrp routes - set the eigrp peer address and have an acl matching
the prefixes you want to have the custom distance for (this doesn't work for
externals though)

Cheers,
Adam

On Mon, Jun 6, 2011 at 11:04 PM, marc edwards <renorider_at_gmail.com> wrote:

> Morning Experts. I have been creating summary addresses in eigrp under
> the interface (ie ip summary address eigrp X 10.1.0.0 255.255.0.0 5).
> Everything appears to work minus the administrative distance being set
> to 5. The next hop router will receive the advertisement as a summary
> but it will still show up with an AD of 90. Anyone know if it should
> be 5 or how to make the 5 show up minus any route-maps or additional
> configuration aside from the summarization? Thanks in advance for the
> insight.
>
> Marc Edwards DCNISS
> http://reno-ccie.blogspot.com
>
>
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Received on Mon Jun 06 2011 - 23:13:44 ART