Re: EIGRP summarization

Good Morning.

AD is locally significant ...

When a router gets it's routing info from multiple sources, which one should
the router trust the most? Which source is the best? The AD value is what
determines this.

When the other router receives your router's EIGRP route, it also makes it's
decision based on the local AD that you have set / default AD.

Since the AD is locally significant, in this way, you can set the AD
different for a routing protocol, routing source etc ... you can control
which routes a router prefers. Quite powerful and flexible!

HTH,

Andrew Lissitz

.
On Mon, Jun 6, 2011 at 9:04 AM, 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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-- 
Andrew Lee Lissitz
all.from.nj_at_gmail.com
Blogs and organic groups at http://www.ccie.net