From: Brian Dennis (brian@labforge.com)
Date: Thu Feb 27 2003 - 01:27:50 GMT-3
If you use the "network" statement to advertise these loopbacks and then
use the "area range" command to summarize them, one of the problems you
can run into is that you can not summarize within the same area. This
means that all routers in the same area as the loopbacks will always see
the specifics. You need to either put these loopbacks into their own
area and then use the "area range" command or redistribute them in
(redistribute connected subnets) and use the "summary-address" command.
Remember to use a route-map if you redistribute connected routes into
OSPF and only allow the loopbacks in.
Here is the exact task from one of my mock labs:
Create four loopback interfaces on R2. Use the 161.X.2.16/28,
161.X.2.32/29, 161.X.2.48/28 and 161.X.2.64/27 subnets from the
161.X.0.0/16 network. Advertise them with OSPF and use only one network
statement for all four loopbacks. Summarize the second and third
loopbacks and ensure that the summary appears as a one network to all
other OSPF routers.
Brian Dennis, CCIE #2210 (R&S/ISP Dial/Security)
brian@labforge.com
http://www.labforge.com
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
pita40
Sent: Wednesday, February 26, 2003 4:26 PM
To: ccielab@groupstudy.com
Subject: summary for area 0
I have the following lo in area 0
You are told to configure ospf to send one route for the above lo
networks
lo 7.7.1.1/24
lo1 7.7.2.1/24
lo2 7.7.3.1/24
lo3 7.7.3.1/24
How do I make this work. I am aware you cannot summarize area 0.
Peter
This archive was generated by hypermail 2.1.4 : Sat Mar 01 2003 - 11:06:37 GMT-3