RE: Question on access list

From: Wilson, Ryan # Atlanta (Ryan.Wilson@relayhealth.com)
Date: Thu Sep 27 2007 - 14:15:14 ART


Depending on the octet of concern your access-list is going to always be
a 0 for even and a 1 for odd. The wild card will always be 254 for that
octet.

Rack1R5#sh ip route conn | i Loopback1
C 1.1.1.0/24 is directly connected, Loopback101
C 1.1.2.0/25 is directly connected, Loopback102
C 1.1.3.0/26 is directly connected, Loopback103
C 1.1.4.0/27 is directly connected, Loopback104
C 1.1.5.0/28 is directly connected, Loopback105
C 1.1.6.0/29 is directly connected, Loopback106
C 1.1.7.0/30 is directly connected, Loopback107
C 1.1.8.1/32 is directly connected, Loopback108
Rack1R5#sh run | i access-list 6.
access-list 60 permit 1.1.0.0 0.0.254.255
access-list 61 permit 1.1.1.0 0.0.254.255
Rack1R5#sh ip route list 60
C 1.1.2.0/25 is directly connected, Loopback102
C 1.1.4.0/27 is directly connected, Loopback104
C 1.1.6.0/29 is directly connected, Loopback106
C 1.1.8.1/32 is directly connected, Loopback108
Rack1R5#sh ip route list 61
C 1.1.1.0/24 is directly connected, Loopback101
C 1.1.3.0/26 is directly connected, Loopback103
C 1.1.5.0/28 is directly connected, Loopback105
C 1.1.7.0/30 is directly connected, Loopback107

Ryan

 

 

 

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
vignesh sethuraman
Sent: Thursday, September 27, 2007 12:18 PM
To: ccielab@groupstudy.com
Subject: Question on access list

Hello,
   
  Could you please anyone explain how the access-lists match the even
number or odd numbers in the first octet or second octet.
   
  Thanks,
  Vignesh

       
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