RE: Route Redistribution - Doyle config exercise

From: cebuano (cebu2ccie@cox.net)
Date: Sat Dec 14 2002 - 01:50:51 GMT-3


Matthew,
Is there a reason why you chose NOT to put a static route in RtrB as the
author indicated? I think what he was trying to point out is that if you
specify the static that matches the RIP interface's mask and set the
next hop to RtrB's e0, then there is no need to use the REDISTRIBUTE
static command since RIP also "owns" e0's MAJOR network.
An even better scenario to explain RIPv1's behavior is to mock up this
lab
www.cisco.com/warp/public/104/10.html.

Elmer

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Matthew Poole
Sent: Monday, December 09, 2002 10:09 AM
To: ccielab@groupstudy.com
Subject: Route Redistribution - Doyle config exercise

Exercise 2, Page 739 - OSPF to RIPv1.

The only way I can get this to work is change the mask on RB E1 to /28
(as
in part 1.), although the solution clearly states no need!

N.B. RB E1 is my S1/1
         RB E0 is my S1/0

The ints on the left are loopbacks with IP OSPF NETWORK PONT_TO_POINT

RB routing table -
Gateway of last resort is not set

     172.16.0.0/16 is variably subnetted, 10 subnets, 3 masks
O 172.16.1.160/28 [110/782] via 172.16.1.145, 00:41:32, Serial1/0
C 172.16.1.144/28 is directly connected, Serial1/0
O 172.16.1.128/28 [110/782] via 172.16.1.145, 00:41:32, Serial1/0
R 172.16.2.128/27 [120/1] via 172.16.1.98, 00:00:16, Serial1/1
O 172.16.1.224/28 [110/782] via 172.16.1.145, 00:41:32, Serial1/0
O 172.16.1.192/28 [110/782] via 172.16.1.145, 00:41:32, Serial1/0
R 172.16.2.32/27 [120/1] via 172.16.1.98, 00:00:17, Serial1/1
S 172.16.1.0/24 is directly connected, Serial1/0
C 172.16.1.96/27 is directly connected, Serial1/1
R 172.16.2.64/27 [120/1] via 172.16.1.98, 00:00:17, Serial1/1

A Debug IP Rip on RB shows :

03:43:24: RIP: sending v1 update to 255.255.255.255 via Serial1/1
(172.16.1.97)
03:43:24: RIP: build update entries - suppressing null update

Relevant config on B is :

interface Serial1/0
 ip address 172.16.1.146 255.255.255.240
 clockrate 128000
!
interface Serial1/1
 ip address 172.16.1.97 255.255.255.224
 clockrate 128000

router ospf 1
 log-adjacency-changes
 redistribute rip metric 1000000 subnets
 passive-interface S1/1
 network 172.16.1.146 0.0.0.0 area 0
!
router rip
 redistribute ospf 1 metric 2
 passive-interface S1/0
 network 172.16.0.0

Any ideas?
.
.



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