From: Church, Chuck (cchurch@wamnetgov.com)
Date: Wed Apr 07 2004 - 22:44:18 GMT-3
Our project has numerous sites ranging from 50 users to 25,000 users. To cover all variations and keep some consistency, we've assigned most of the 1024 to various functions, such as VLANs for printers, servers, users, IDSs, and a lot of other things. Now we have a need for VLANs to support legacy networks for migration purposes. Rather than borrow some VLAN IDs from the current scheme and cause differences from other sites (which will confuse NOC personal), we're looking at the possibility of using the extended range for this new need. We'd never have even 500 at any one site, but across all sites, we might use a good portion of them. Having an additional 3000 might help to maintain our current consistency.
Chuck Church
Lead Design Engineer
CCIE #8776, MCNE, MCSE
Wam!Net Government Services - Design & Implementation Team
13665 Dulles Technology Dr. Ste 250
Herndon, VA 20171
Office: 703-480-2569
Cell: 703-819-3495
cchurch@wamnetgov.com
PGP key: http://pgp.mit.edu:11371/pks/lookup?op=index&search=cchurch%40wamnetgov.com
> -----Original Message-----
> From: Howard C. Berkowitz [mailto:hcb@gettcomm.com]
> Sent: Wednesday, April 07, 2004 11:58 AM
> To: ccielab@groupstudy.com
> Subject: Re: OT: 4096 VLAN support
>
>
> 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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