The access-list you have below will only allow networks with an even third octet. Since it denies everything else, that would work.
The logic here is that the least significant bit of the third octet must be equal to a 0. Therefore, only evens are permitted since all even networks end with a 0. On Fri, Mar 5, 2010 at 2:02 PM, Mustafa Yadav <[email protected]>wrote: > hi all, > I have read in one question asked do not want odd in third octet .I am not > pretty sure about the answer but it was something like below.Can someone > clarify the llogic behind it? > > access-list 1 permit 0.0.0.0 255.255.254.255 > > _______________________________________________ > For more information regarding industry leading CCIE Lab training, please > visit www.ipexpert.com > > -- Regards, Joe Astorino CCIE #24347 (R&S) Sr. Technical Instructor - IPexpert Mailto: [email protected] Telephone: +1.810.326.1444 Live Assistance, Please visit: www.ipexpert.com/chat eFax: +1.810.454.0130 IPexpert is a premier provider of Classroom and Self-Study Cisco CCNA (R&S, Voice & Security), CCNP, CCVP, CCSP and CCIE (R&S, Voice, Security & Service Provider) Certification Training with locations throughout the United States, Europe and Australia. Be sure to check out our online communities at www.ipexpert.com/communities and our public website at www.ipexpert.com
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