We did this in a large implementation of Catalyst switches using a mixture of ISL and dot1q and works fine with no problems. We used ISL between 6500s and 6500s, dot1q 3500s to 6500s and 3500s between 3500s. I assume this should be the same for what you are implementing. Just change the trunking protocols on the ports and you are away!
Regards Alan -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of [EMAIL PROTECTED] Sent: 19 December 2002 10:10 To: [EMAIL PROTECTED] Subject: ISL & 802.1q in one switch [7:59512] Hi folks, Does anybody have experience with using ISL en 802.1q within the same switch. I have ISL trunk between my access and distribution layer. Now I want to connect a firewall on my access switch with 802.1q trunking protocol. Is it possible? if the answer is YES, should I change anything in my configuration? My firewall talks 802.1q with the access switch and the vlan's should go from access to distribution switch which talk ISL. thanks, Mehrdad Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=59514&t=59512 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]