Re: Class "A" prefix-list

"but still i need to know exactly what's the difference between 0.0.0.0/1ge
8 and 0.0.0.0/1 le 32"

0.0.0.0/1 ge 8 -- This will match any network in the range 0.0.0.0 -
127.255.255.255 with a subnet mask GE 8
0.0.0.0/1 le 32 -- This will match any network in the range 0.0.0.0 -
127.255.255.255 with any subnet mask

So essentially, the difference is that the second option matches any mask
and the first option only matches masks that are > 8 which is limiting in my
opinion.

Just because the first octet is 1-126 and it is a "class A" address doesn't
mean the mask will be /8 or more....this is a CIDR classless world so I
would use option #2 but like others have said it all depends on what you
want.

Regards,

Joe Astorino
CCIE #24347
Blog: http://astorinonetworks.com

"He not busy being born is busy dying" - Dylan

Blogs and organic groups at http://www.ccie.net
Received on Wed Jun 01 2011 - 17:08:48 ART