Hi, Please tell me what is the use of "ip classless" command in classful networks? I have read somewhere that When using classful routing protocols such as RIP or IGRP, use "ip classless" command if you want it to also match unknown subnets of known networks. Can anybody throw some light on this statement. Thanks, Brijesh Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=4828&t=4828 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]