From: Wes Smith (wesmith@rogers.com)
Date: Wed Apr 07 2004 - 19:14:23 GMT-3
Well one circumstance is naming standards. Another is a desire to have
completely unique vlan'id's thruout a large campus.
(again naming standards... ie, vlan 20 is the 2nd floor , 30 is the
3rd etc)
Service providers doing ethernet lan extentions are another.
You're right about VTP. You need VTP Ver3 to support the expanded range
vlans.. Really new stuff.
Re switches. All of the C4K, 4500, 5000, 6000 and 2950/3550 support
extended vlans.
None of the ...2900xl and 3500xl do.
Howard C. Berkowitz wrote:
> At 8:12 AM -0500 4/7/04, Church, Chuck wrote:
>
>> All,
>>
>> Sorry about the OT, but does anyone have a list of which Cisco
>> switches support the 1025-4096 VLANs using dot1Q? I looked for a
>> while on CCO, but never found a comprehensive list. I'm most
>> interested in 3550s (which I'm pretty sure do), 3500XLs, and Sup 1 &
>> 2 for the cat 4000s and 4500s.
>>
>
> Might I ask a couple of questions, just for my own sense of such
> problems?
>
> What drives the requirement for such a large number of VLANs? A large
> campus? Are the VLANs divided by physical constraints (e.g.,
> building/floor), or are they application/departmental?
>
> Are you using VTP? Will it be an operational constraint that it has
> trouble with extended range VLANs?
>
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