From: Paul Crist (pcrist@xxxxxxxxxxx)
Date: Fri Aug 31 2001 - 08:47:27 GMT-3
My understanding of the summary address is that it should be used when
redistributing other routing protocols into OSPF. The summary address
command creates a route to null0, that is why you get the high metric. The
correct way to do what you what is to do is to do an area range. Sometimes
that does not work due to virtual links that you have running. My thought
would be that if you are asked a question like that you need to configure
the IOS as you would normally, if you have a problem ask the proctor if you
can use an alternate configuration. Be aware of the problems your alternate
configuration will cause; routes to null0, flapping routes, redistribution
problems, etc. You may want to take a look at the initial problem -
redistribution into FLSM protocol and see if there is a different approach
you can use.
Paul Crist
----- Original Message -----
From: "CCIE yong" <ccie_yong@hotmail.com>
To: <ccielab@groupstudy.com>
Sent: Friday, August 31, 2001 6:24 AM
Subject: summary-address
> Hi,
>
> I have question regarding the summary-address creation for the fatkid lab
> 501 that make the /28 at area 0 to /24, so that the igrp router can get
the
> route.
>
> the question is, the creation of "summary-address" is it IOS version
> specific, meaning that does it mean that some ios version can do the job
> while some can't, because I tried to create the summary-address for area 0
> (/28) at r3 of fatkid lab 501, I CANNOT see the "170.10.7.0 255.255.255.0
is
> a summary" in the routing table, and when I did
>
> r3#sh ip os s
>
> OSPF Process 1, Summary-address
>
> 170.10.7.0/255.255.255.0 Metric 16777215, Type 0, Tag 0
>
> seems like the metric is very big, actually I don't know what it means,
and
> just can't go to the routing table.
>
> please advise.
>
> Thanks in advance
> Yonger
>
>
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