From: Jeongwoo Park (jpark@wams.com)
Date: Thu Jul 10 2003 - 21:01:41 GMT-3
Brian,
What if R3' 189.18.0.0/16 (connected network ) is added after R3 had learned
the 189.18.0.0/16 network from R4?
Then, wouldn't R3 be able to ping R4's loopback address ( 189.18.4.4/24 )?
JP
-----Original Message-----
From: Brian Dennis [mailto:brian@labforge.com]
Sent: Thursday, July 10, 2003 11:42 AM
To: 'James R Big'; ccielab@groupstudy.com
Subject: RE: ospf and rip
Let me explain what is happening.
When R3 receives the auto summarized 189.18.0.0/16 advertisement from
R4, R3 checks to see if it already has any subnets of the 189.18.0.0/16
network in its routing table which is does because of the connected
route to lo0. This means that R3 will ignore the update about the
189.18.0.0/16 network from R4.
Brian Dennis, CCIE #2210 (R&S/ISP-Dial/Security)
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Brian Dennis
Sent: Thursday, July 10, 2003 10:54 AM
To: 'James R Big'; ccielab@groupstudy.com
Subject: RE: ospf and rip
The 189.18.0.0/16 network is separated by the 152.1.0.0/16 network.
Why Doesn't RIP or IGRP Support Discontiguous Networks?
http://www.cisco.com/warp/public/105/55.html
Brian Dennis, CCIE #2210 (R&S/ISP-Dial/Security)
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
James R Big
Sent: Thursday, July 10, 2003 10:43 AM
To: ccielab@groupstudy.com
Subject: ospf and rip
Hum.. R3 can't see R4's lo 0 why?
R3 has ospf and rip(version1)
...
s1 s1
R2-----ospf(area0)------R3-lo 0
|S0 |s0
| |
ospf(area1) rip(version1)
| |
|s0 |s0
R1 R4
R1.
lo 189.18.1.1 255.255.255.0
s0 152.1.1.1 255.255.255.252
R2
lo 189.18.2.2 255.255.255.0
s0 152.1.1.2 255.255.255.252
s1 152.1.1.5 255.255.255.252
R3
lo 189.18.3.3 255.255.255.0
s0 152.1.2.3 255.255.255.0
s1 152.1.1.6 255.255.255.252
R4
lo 189.18.4.4 255.255.255.0
l1 152.1.3.4 255.255.255.0
s0 152.1.2.4 255.255.255.0
---------------------------------
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This archive was generated by hypermail 2.1.4 : Wed Aug 06 2003 - 06:52:35 GMT-3