Cisco web site has a "Using the Cisco 2524-2525 Back-to-Back". I am trying to test the same configuration on two 2600 with internal T1 CSU/DSU. With the special cable, the interface is up/up, but I can not PING any IP addresses, even the IP address on the local interface. Anyone knows why ? Ruihai Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=2473&t=2473 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]

