You may be correct, I don't recall but I do remember the per VLAN spanning issue coming up at customer meeting a few years ago. Anyone know fur sure?
dave Kent Yu wrote: > > Dave, > > If memory serves, cisco's dot1q implementation always uses per vlan > spannging tree. > > Kent > > ""MADMAN"" wrote in message > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > > add the CAT4K to your list of dot1q only devices. The old arguement > > of dot1q not supporting per VLAN spanning is also moot. > > > > Dave > > > > Patrick Ramsey wrote: > > > > > > well here is a quote from cisco's site > > > > > > http://www.cisco.com/warp/public/473/43.html > > > > > > "Catalyst 2950 series switches only support 802.1q trunking. They do not > > > support ISL trunking" > > > > > > and the 2950 is one of their best of breed switches...maybe this means > they > > > will begettign rid of isl soon... > > > > > > -Patrick > > > > > > >>> "Audy Bautista" 03/11/02 10:18AM >>> > > > I've always had the same question in my head. In our environment (all > > > Cisco; at least 4 6509s and about a dozen 2948s, some 3548s, 2924s, > etc.) > > we > > > use 802.1q mostly because the 2948s don't support ISL. We even trunk > the > > > 6509s using 802.1q even though of course 6509s support ISL and 802.1q. > But > > > I don't know which one is better, and I've done similar searches in the > > past > > > for more info; no luck. > > > > > > Audy > > > > > > ""Kaminski, Shawn G"" wrote in message > > > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > > > > Repost. First one didn't make it. > > > > > > > > > -----Original Message----- > > > > > From: Kaminski, Shawn G > > > > > Sent: Friday, March 08, 2002 2:54 PM > > > > > To: 'Groupstudy' > > > > > Subject: ISL or 802.1q? > > > > > > > > > > After a search of the archives and reading the posts, I realize this > > has > > > > > been discussed before. I also searched CCO. However, there didn't > seem > > > to > > > > > be a clear answer on what I was looking for. We have two > Distribution > > > > > Cisco 6509 switches trunked together and there is an argument as to > > > > > whether we should use ISL or 802.1q on this trunk. Our network is > all > > > > > Cisco. Some people are saying 802.1q on everything because Cisco is > > > > > leaning towards this direction anyway. Some say ISL should be used > > > between > > > > > the Distribution switches and 802.1q between Distribution and Access > > > > > switches. I don't know why because I couldn't find anything on this. > > > Some > > > > > of the people here keep saying that ISL has more "features" than > > 802.1q. > > > > > Could some of you please give your opinions about what you would use > > > (ISL > > > > > or 802.1q) in this situation? > > > > > > > > > > Thanks, > > > > > Shawn G. Kaminski > > > > > EDS Network Engineering - DowNET > > > >>>>>>>>>>>>> Confidentiality Disclaimer This email and any files > > transmitted with it may contain confidential and > > > /or proprietary information in the possession of WellStar Health System, > > > Inc. ("WellStar") and is intended only for the individual or entity to > whom > > > addressed. This email may contain information that is held to be > > > privileged, confidential and exempt from disclosure under applicable > law. > > If > > > the reader of this message is not the intended recipient, you are hereby > > > notified that any unauthorized access, dissemination, distribution or > > > copying of any information from this email is strictly prohibited, and > may > > > subject you to criminal and/or civil liability. If you have received > this > > > email in error, please notify the sender by reply email and then delete > > this > > > email and its attachments from your computer. Thank you. > > > > > > ================================================================ > > -- > > David Madland > > Sr. Network Engineer > > CCIE# 2016 > > Qwest Communications Int. Inc. > > [EMAIL PROTECTED] > > 612-664-3367 > > > > "Emotion should reflect reason not guide it" -- David Madland Sr. Network Engineer CCIE# 2016 Qwest Communications Int. Inc. [EMAIL PROTECTED] 612-664-3367 "Emotion should reflect reason not guide it" Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=37894&t=37859 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
