From: chahal (bob.chahal@xxxxxxxxxxxx)
Date: Mon Jan 15 2001 - 19:49:34 GMT-3
I seem to remember this one. What I found was that Router B accepts the
routing info from Router C as /28 networks (i.e. 172.16.2.32/28 .64/28
.128/28 and .96/28) and redistributes these into IGRP. The ethernet
interface of Router C is still configured with an address from
172.16.1.96/27. Router C will send rip updates of its connected networks but
Router B will interpret tham as /28 networks.
The routing table on A will see the networks as 172.16.2.32/27 .64/27
.128/27 and .96/27 so there is some loss of address/network detail.
----- Original Message -----
From: David FAHED <dfahed@outremer.com>
To: <ccielab@groupstudy.com>
Sent: Monday, January 15, 2001 4:14 PM
Subject: Jeff doyle errata??
> I wonder if I missed something really important about redistribution
> with classful protocol or if Jeff Doyle book have a big mistake:
> Page 739 exercises:
>
> Router A is Running IGRP and Router C is Running RIPV1. Write a
> configuration for router B that will provide full connectivity for all
> subnets:
>
> 172.16.1.160/28 172.16.1.144/28
> 172.16.1.224/28--RouterA---------e0-RouterB
> 172.16.1.128/28 e1
> 172.16.1.192/28 /
> /
> 172.16.1.96/27
> /
> /
> RouterC
> 172.16.2.32/27
> 172.16.2.64/27
> 172.16.2.128/27
>
> Page 958 solution of chapter 11 configuration :
>
> The solution is to use a 28 bit mask on RTB eth1 interface.
> The config of RTB:
> int e0
> ip add 172.16.1.146 255.255.255.240
>
> int e1
> ip add 172.16.1.98 255.255.255.240
>
> router rip
> redis igrp 1 metric 1
> pass int e0
> net 172.16.0.0
>
> router igrp 1
> redistribute rip met 10000 100 255 1 1500
> pass inter e1
> net 172.16.0.0
>
> My problem is with this config :
> RTC will see all the route (of IGRP domain /28) BUT RTA will see only
> one route 172.16.1.96/28 (of rip domain).
>
> Any help will be welcome!!!
>
>
>
>
>
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