From: Jason Sinclair (sinclairj@xxxxxxxxxxxxxxx)
Date: Thu Nov 29 2001 - 23:31:45 GMT-3
B - however they should be deny statements not permit.
Regards,
Jason Sinclair
Manager, Network Support Group
POWERTEL
Ground Level, 55 Clarence Street,
SYDNEY NSW 2000
AUSTRALIA
office: + 61 2 8264 3820
mobile: + 61 2 416 105 858
* sinclairj@powertel.com.au
-----Original Message-----
From: Waters, Kivas (UK72)
[mailto:Kivas.Waters@Honeywell.com]
Sent: Friday, 30 November 2001 08:09
To: ccielab@groupstudy.com
Subject: IP route filtering question
Configuring very specific route filters for route
redistribution, split
horizon issues and general route filtering is important and
I want to make
sure that I get it right in the lab. There appears to be a
number of ways
of implimenting the route filters but what I'm interrested
is the ACL's
defining the routes to be filtered. The question is, what
type of route
filters should be used in which circumstances?
Here is an example ...
Lets say that I wanted to deny the following specific routes
from being
learned by a routing process : 192.168.10.0/24 and
172.16.0.0/12
I suspect that answer c) is most correct but what do you IP
routing guru's
think?
a)
access-list 7 permit 192.168.10.0
access-list 7 permit 172.16.0.0
b)
access-list 7 permit 192.168.10.0 0.0.0.255
access-list 7 permit 172.16.0.0 0.15.255.255
c)
access-list 117 permit 192.168.10.0 0.0.0.255 255.255.255.0
0.0.0.0
access-list 117 permit 172.16.0.0 0.15.255.255 255.240.0.0
0.0.0.0
best regards
Ki
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