From: Bernard Omrani (one@xxxxxxxxxxxxxxx)
Date: Sat Mar 31 2001 - 15:17:50 GMT-3
I also recommend using a free utility that is available on www.boson.com
that when given the information ( such as 192.168.1.0 0.0.254.255 , tells
you exactly which routes will be included.
This is useful when you think you have a solution and you want to make sure.
here is a snapshot:
http://www.networkking.net/out/wildcard.jpg
The utility is kind of hidden in the website and this is how to get there:
To download the software, go to www.boson.com. , Choose Utilities under
"Free Stuff", choose "Boson Software IP Subnetter", click "download
IPSubnetter", choose Boson Utilities under "Beta Site".
Bernard Omrani
Here is a question from one of our labs. Below is the access-list we
used to deny the odd routes.
4. Create the following 6 static routes on R6; using the Cisco IOS
command ip route 192.168.X.0 255.255. 255.0 null 0. Use the number
1,2,3,4,5, and 6 for the variable X. Redistribute the static routes such
that they are seen by all routers. Now filter on R5 using any method
that uses an access list so that only the even routes (i.e. X=2,4, and
6) are seen past R5 towards the OSPF network. Your access-list can only
have two lines in it, not seven for this exercise. All the 192.168.X.0
routes must still be seen in R5^Rs routing table.
access-list 3 deny 192.168.1.0 0.0.254.255
access-list 3 permit any
Marc Russell
CCIE Boot Camp
www.ccbootcamp.com
-----Original Message-----
From: Phillip Moulay [mailto:pkm@calweb.com]
Sent: Saturday, March 31, 2001 12:32 PM
To: Tariq Sharif
Cc: ccielab@groupstudy.com
Subject: Re: Access-list for even/odd numbered networks
Any idea how to create a filter using ACL to filter even or odd numbered
networks. Let's say you just want to redistribute 200.200.30.0,
200.200.32.0,
200.200.34, etc. How will you create the ACL?
Thanks
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