?
Guys,
 
Quick question that I'm trying to fully understand the logic.
 
access-list 191 deny ip 150.20.66.0 0.0.0.127 150.21.21.128 0.0.0.127
access-list 191 deny ip 150.20.66.0 0.0.0.127 150.20.56.128 0.0.0.127
access-list 191 deny ip 150.20.66.129 0.0.0.126 150.20.87.0 0.0.0.254
//ACL above says the latter part of this subnet is denied access to all odd IPs 
in the 4th octet
access-list 191 deny ip 150.20.66.129 0.0.0.126 150.20.80.0 0.0.0.254
//ACL above says the latter part of this subnet is denied access to all even 
IPs in the 4th octet
?Question: If you inverse 254, you come up with 1, so shouldn't that be 
matching odds? (we care about the last bit and if its a 1, it will match odd 
numbers)  How would this match evens as well? (its the same as the ACL above 
it, no?)

access-list 191 permit ip any any
int fa0/1
ip access-group 191 in
int mu1
ip access-group 191 in

 
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