In Catalyst 6509, IOS 12.1 shutting Interface VLAN 1 down should not create any problems since the VLAN 1 itself will still be active. The question is that the latest IOS version allows you to remove VLAN 1 from you trunk ports which is fine as long as the Data and the Management VLAN is not 1. I was reading Cisco LAN Switching Book, and found out that most of the control traffic such as VTP, DISL/DTP (used for trunk negotiation) , CDP, and PAGP always use VLAN 1. Won't it create a major problem if VLAN 1 is removed from the trunk links. When is it possible to remove VLAN 1 from all trunk links.?Thanks, Teza
_______________________________________________ Join Excite! - http://www.excite.com The most personalized portal on the Web! Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=56052&t=56052 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]

