They can run on the same network but a pair of directly connected switches must be using the same trunking protocol.
Tim ""dj"" wrote in message news:[EMAIL PROTECTED] > Have a production campus LAN network primarily running with 3508Gs and > 3524XL data switches with gigabit fiber uplinks. All switches are > currently running ISL Vlan trunking between the uplink ports. There's > also a 2620 router running ISL fastethernet subinterfaces configured > with encapsulation ISL. > > I have some non-cisco network devices that only support 802.1q vlan > trunking. I already know the 802.1q trunking on non-cisco equipment > works ok with cisco devices running 802.1q trunking. > > However, when I deploy the non-cisco equipment in the production campus > LAN, can I have some trunk ports running 802.1q trunking and other trunk > ports running ISL. Bottom line: Can ISL and 802.1q co-exist or do I > have to migrate entire LAN to 802.1q vlan trunking?? > > regards, > dj > **Please support GroupStudy by purchasing from the GroupStudy Store: > http://shop.groupstudy.com > FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=73513&t=73511 -------------------------------------------------- **Please support GroupStudy by purchasing from the GroupStudy Store: http://shop.groupstudy.com FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
