I was just configuring OSPF over a 4 T1 ATM/IMA card and each time I configure OSPF, the link goes up and down. Has anyone had any problems with OSPF over ATM/IMA using sub interfaces? Karl Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=492&t=492 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]