RE: The old problem of getting /32 loopbacks with class b address es into IGRP as /24 and then advertised out of IGRP elsewhere

From: WRHale@xxxxxxxxxx
Date: Tue Jun 11 2002 - 22:16:13 GMT-3


   
2) You don't have to disable eigrp/igrp redistribution manually. Just give
the igrp process a different number. I tried your suggestion and it works.

interface Loopback9
 ip address 170.10.98.1 255.255.255.0
!
interface Ethernet0
 ip address 170.10.1.1 255.255.255.192
 ip summary-address eigrp 1 170.10.1.0 255.255.255.0 5
!
router eigrp 1
 passive-interface BRI0
 passive-interface Serial0.1
 network 170.10.0.0
 no auto-summary
 no eigrp log-neighbor-changes
!
router igrp 2
 redistribute eigrp 1 metric 1544 20000 255 1 1500
 passive-interface BRI0
 passive-interface Ethernet0
 passive-interface Loopback0
 passive-interface Serial0.1
 network 170.10.0.0

Gateway of last resort is not set

     170.10.0.0/16 is variably subnetted, 9 subnets, 3 masks
C 170.10.0.0/24 is directly connected, Loopback0
D 170.10.1.0/24 is a summary, 00:06:47, Null0
C 170.10.1.0/26 is directly connected, Ethernet0
C 170.10.9.0/24 is directly connected, BRI0
O IA 170.10.16.0/26 [110/74] via 170.10.8.1, 00:38:33, Serial0.1
O 170.10.8.16/28 [110/128] via 170.10.8.1, 00:38:33, Serial0.1
C 170.10.98.0/24 is directly connected, Loopback9

01:05:34: IGRP: sending update to 255.255.255.255 via Loopback9
(170.10.98.1)
01:05:34: subnet 170.10.0.0, metric=501
01:05:34: subnet 170.10.1.0, metric=1100
01:05:34: subnet 170.10.9.0, metric=158250
01:05:34: IGRP: Update contains 3 interior, 0 system, and 0 exterior routes.
01:05:34: IGRP: Total routes in update: 3

-----Original Message-----
From: Nick Shah [mailto:nshah@connect.com.au]
Sent: Tuesday, June 11, 2002 5:16 PM
To: Thomas Larus; ccielab@groupstudy.com
Subject: Re: The old problem of getting /32 loopbacks with class b
addresses into IGRP as /24 and then advertised out of IGRP elsewhere

1) Static redistribution seems to be the only way (unless there are other
routing prots. where you could summarize it and inject it back, but if its
connected route, I doubt it can be done)

2) Disable eigrp/igrp redistribution, create summary of eigrp routes,
manually inject those summaries..

Since you havent presented an actual scenario, this is best I could come up
with.

rgds
Nick
----- Original Message -----
From: Thomas Larus <tlarus@cox.net>
To: <ccielab@groupstudy.com>
Sent: Wednesday, June 12, 2002 8:17 AM
Subject: The old problem of getting /32 loopbacks with class b addresses
into IGRP as /24 and then advertised out of IGRP elsewhere

> 1 )Does anyone have a quick and dirty approach to getting those pesky
class
> b IGRP /32 loopbacks into IGRP as /24 routes.
>
> I have searched my personal archives of groupstudy; I cannot get searches
of
> the groupstudy archives to work very often. I just tried. What I found
in
> my personal archives more than once is an article from Cisco that
discusses
> the problem. I did not see a solution in it, though.
>
> If you are thinking of posting this Cisco article
> http://www.cisco.com/warp/public/105/54.html,
> please don't. I just looked at this again, and followed a link or two to
> other Cisco items.
>
> 2 ) Also, is there any way to summarize an EIGRP route into IGRP (same AS
> number) ON THE SAME ROUTER. Since EIGRP does summarization out an
> interface, I can't see how one could summarize from EIGRP to IGRP on the
> same router.



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