So I assume that vlan info will propagate correctly across both the 802.1q and ISL trunks as follows: 3524 ---- PCa in Vlan 3 | | 802.1q trunk | 3508 | | ISL trunk | 3524 ---- PCb in Vlan 3
Can PCa reach PCb ??? "Reimer, Fred" wrote: > You can mix and match on different ports in the same switch. But obviously > the two ports that are connected together would have to use the same > encapsulation. > > Fred Reimer - CCNA > > Eclipsys Corporation, 200 Ashford Center North, Atlanta, GA 30338 > Phone: 404-847-5177 Cell: 770-490-3071 Pager: 888-260-2050 > > NOTICE; This email contains confidential or proprietary information which > may be legally privileged. It is intended only for the named recipient(s). > If an addressing or transmission error has misdirected the email, please > notify the author by replying to this message. If you are not the named > recipient, you are not authorized to use, disclose, distribute, copy, print > or rely on this email, and should immediately delete it from your computer. > > -----Original Message----- > From: dj [mailto:[EMAIL PROTECTED] > Sent: Tuesday, August 05, 2003 8:43 AM > To: [EMAIL PROTECTED] > Subject: Can 802.1q & isl co-exist on same network?? [7:73511] > > 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 > **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=73540&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
