Hi All, I am not sure what is the difference between tag-switching and MPLS ????????.... Also, are all mpls commands backward compatible to tag-switching ???... Thanks, Krishnan. Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=8027&t=8027 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]