From: Jeongwoo Park (jpark@xxxxxxxx)
Date: Fri May 24 2002 - 13:07:00 GMT-3
Jason
I don't think I understood what you said.
My ios version is 12.0, and this router is ASBR. So, somehow I need
something like this' ip route 170.100.100.0 255.255.255.0 null0'
Area range is used only in ABR as far as I know. So, I can't use area range
command to summarize the route with 27 subnet mask.
I used the command 'summary-address'
If I put static route to null 0, it works beautifully. But since the static
route to null 0 is considered static route, I won't be allowed to use it.
Would I have other options that are as good as using static route to Null 0?
Thanks
-----Original Message-----
From: li jian hua [mailto:jasonli@cisco.com]
Sent: Thursday, May 23, 2002 9:46 PM
To: Jeongwoo Park
Cc: 'ccielab@groupstudy.com'
Subject: Re: Work-around on using null interface
Prior to Cisco IOS? Software Release 12.1(6), it was recommended to
manually configure, on the ABR, a discard static route for the summary
address in order to prevent possible routing loops. For the summary route
shown above, you can use this command:
ip route 128.213.64.0 255.255.224.0 null0
In IOS 12.1(6) and higher, the discard route is automatically generated by
default. If for any reason you don't want to use this discard route, you
can configure the following commands under router ospf:
[no] discard-route internal
or
[no] discard-route external
At 20:36 2002-5-23 -0700, Jeongwoo Park wrote:
>Hi
>I was wondering what could be equivalent to using null interface.
>I was redistributing ospf route 170.100.100.6/27 into igrp with the summary
>address of 170.100.100.0/24.
>Once you summary under ospf, it is a must that you should use null
>interface( ip route 170.100.100.0 255.255.255.0 null 0). Since using null
>interface is considered static route, what could be the substitute for
that?
>I tried with distribute-list, but didn't work.
>
>Thanks
>
>JP
This archive was generated by hypermail 2.1.4 : Thu Jun 13 2002 - 10:59:07 GMT-3