From: ccie2be (ccie2be@nyc.rr.com)
Date: Fri Jul 18 2003 - 15:34:41 GMT-3
Hi Johnathan,
The issue in this scenario isn't IGRP; it could have just as well been rip
v1. The problem has to do with summarizing a a subnet so that it can be
redistributed into a classful routing protocol.
Regarding the reward, I realize that not everybody lives in the NYC area,
however, since there's no stature of limitation and NYC is one of the most
visited cities in the world, I suspect the winner will at some point be in
NYC to claim their justly deserved reward. There's even the possibility
that if by the time the winner claims their reward I happen to have passed
the lab, my wife will feel such graditude she might even throw in a gourmet
dinner. :-)
Here's a copy of the original post:
Rtr1, rtr2, and rtr3 are ospf backbone routers connected via f/r
172.16.123.0/29 with rtr2 as the hub.
rtr2 is also redistributing routes into igrp. Since igrp is classful, the
subnet 172.16.123.0/29 is being summarized into a /24 with the command,
"area
0 range 172.16.123.0 255.255.255.0" on rtr1, rtr2 and rtr3.
On both rtr1 and rtr3, in the routing table there's the entry,
"o 172.16.123.0/24 is a summary ..... null 0",
However, there's no such entry on rtr2.
In addition, on rtr2, in the output of "show ip ospf" it has the following,
Area Backbone (0)
<text omitted>
Area Ranges are
172.16.123.0/24 Passive Advertise
rtr2 config:
int s0.123 multi
ip addr 172.16.123.2 255.255.255.248
fram map ip 172.16.123.1 221 broad
fram map ip 172.16.123.3 223 broad
ip ospf priority 5
router ospf 1
net 172.16.123.0 0.0.0.7 area 0
area 0 range 172.16.123.0 255.255.255.0
redist igrp 1 subnet
In addition, sh ip os nei on rtr2 shows that rtr1 and rtr3 are neighbors and
all other summarized subnets are succesfully being redistributed into IGRP.
(Rtr 2 is connected to rtr4 which is running only IGRP and the route table
on rtr4 shows that all subnets except 172.16.123.0/24 are being learned from
rtr2
Why is that? I want 172.16.123.0/24 to be advertised. In fact, the reason
172.16.123.0/24 is being summarized is so that it can be redistributed into
igrp.
Other subnets are being summarized and redistributed into igrp just fine.
What needs to be done so that 172.16.123.0/24 is not "Passive Advertise"?
I've been trying different things to fix this for hours, but without any
success. Please end my misery and confusion.
----- Original Message -----
From: "Jonathan V Hays" <jhays@jtan.com>
To: "'ccie2be'" <ccie2be@nyc.rr.com>; "'Group Study'"
<ccielab@groupstudy.com>
Sent: Friday, July 18, 2003 1:31 PM
Subject: RE: Reward Offered to first person with correct answer to ospF
problem
Raj,
Since very few of us live in that area, I think a couple of thousand US
dollars via PayPal would be a more reasonable reward, don't you? <G>
If you have limited time and are spending it in serious preparation for
the CCIE R&S lab exam, I have to ask: why even bother with IGRP? The
IGRP protocol has not been on any CCIE Lab since October 31, 2002. Cisco
specifically says it won't be on the lab here:
http://www.cisco.com/en/US/learning/le3/le2/le23/le7/learning_certificat
ion_type_home.html
If you really want help with this scenario, please post complete,
unedited configurations of all three routers, along with "sh ip route".
Doing that is more likely to get people interested in your problem
because we won't be playing a back-and-forth guessing game about how you
have everything configured.
Post your configs.
Jonathan
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
ccie2be
Sent: Friday, July 18, 2003 12:53 PM
To: Group Study
Subject: Reward Offered to first person with correct answer to ospF
problem
Hi group,
This morning at 9:01, I posted an ospf problem regarding summarizing an
area 0
subnet so that it can be redistributed into igrp. This problem
continues to
baffle me, so I am offering a reward of free drinks to the first person
who
provides the correct solution and a clear explanation. The reward can
be
collected at your choice of any establishment in Manhattan or Queens
(other
NYC tri-state locations are also possible).
I've spent too many hours on this problem and I need to move on to other
labs,
but I'd like to understand what the #$%&*( is going on before
starting
on something else.
See my post (from ccie2be re: OSPF passive advertise) for a full
description
of the problem and feel free to request additional info if anything is
unclear. Raj
This archive was generated by hypermail 2.1.4 : Wed Aug 06 2003 - 06:52:45 GMT-3