Just commencing study for the CCNP routing exam and as I understand it to date, the correct terminology is that you have Classful routing protocols not networks.
A classful routing protocol (such as RIP or IGRP) assumes that everything else in the routing table has the same subnet mask. A classless routing protocol (such as RIPv2 and EIGRP) has support for Variable Length Subnet Masks which can be used for the conservation of IP addresses and these VLSM's are transmitted with each routng table update. Perhaps this question would be better suited to the CCNA list. Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=56130&t=56126 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]