From: Justin Menga (Justin.Menga@xxxxxxxxxxxxxxxxxx)
Date: Mon Dec 11 2000 - 16:47:08 GMT-3
If you have 24 bit masks, the ip default-network 172.16.0.0 statement should
generate a gateway of last resort to 172.16.0.0 to 172.16.10.0 (assuming
172.16.10.0) is one of your subnets (If you have multiple subnets under
172.16.x.x, I believe all routes will be flagged as EXTERIOR routes, and
each router will choose a default network based on the lowest metric of all
the exterior routes).
This will also automatically put a static route in your config:
ip route 172.16.0.0 255.255.0.0 172.16.10.0
Ronnie - does the default network work if you don't use the
default-information statements??
Regards,
Justin Menga MCSE+I CCNP CCSE ASE
WAN Specialist
Computerland New Zealand
PO Box 3631, Auckland
DDI: (+64) 9 360 4864 Mobile: (+64) 25 349 599
mailto: justin.menga@computerland.co.nz
-----Original Message-----
From: MAZHAR KARAGULLE [mailto:mkaragulle@tekstilbank.com.tr]
Sent: Monday, 11 December 2000 11:21 p.m.
To: Ronnie Royston
Cc: ccielab@groupstudy.com; nobody@groupstudy.com
Subject: Re: IGRP - Generating/Accepting Default Information
H,
You cann't do this. Because if you open a debug session on R1 , you will
see that ony 24 bit networks are advirtised to R4 . This is default
behaviour of IGRP. You shoul use another IP network ( different from
172.16.0.0 ) for ip default-network command.
Good Luck
Gönderilen:
Bilgisine:
Ronnie Royston Konu:
<RonnieR@globaldatasys.com> IGRP - Generating/Accepting Default
Information
Gönderen:
10/12/2000 11:00 PM
Lütfen Ronnie Royston
adresine yanıtlayınız.
R7---------R1--------R4
BGP IGRP
All addressing is 172.16.x.x with /24 masks. The lab asks me to generate a
default network at R1 to be advertised to R4.
I tried putting 'ip default-network 172.16.0.0' on R1. His route table
shows the network as the candidate default.
I have tried to get that default network advertised via IGRP to R4 with no
luck ( for about 2 hours now ). Does anyone see what is missing?
R1:
router igrp 1
network 172.16.0.0
default-information out 5
!
ip classless
ip default-network 172.16.0.0
!
access-list 5 permit any ** also I have tried ** access-list 5 permit (all
nets beyond R1) **also I have tried** permit 172.16.0.0 0.0.0.255
R4:
router igrp 1
network 172.16.0.0
default-information in 5
!
ip classless
access-list 5 permit 172.16.0.0 0.0.255.255 **many variations here, too**
Thank you.
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