From: David Hiers (David_Hiers@adp.com)
Date: Thu Apr 08 2004 - 13:04:04 GMT-3
Frankly, I've had so many clever naming conventions (vlan number equal to floor number or the 3rd octet of IP address, IP address tied to building number, etc) shatter in the face of reality that I am happy with globally unique numbers for such things.
I store any linkage between unique entity identifiers and reality (floor numbers, zip codes, area codes, etc) in an externally to the entity, as metadata.
David
-----Original Message-----
From: Church, Chuck [mailto:cchurch@wamnetgov.com]
Sent: Wednesday, April 07, 2004 6:19 PM
To: Wes Smith
Cc: ccielab@groupstudy.com
Subject: RE: OT: 4096 VLAN support
Thanks for the info. Naming standards is exactly the reason.
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: Wes Smith [mailto:wesmith@rogers.com]
> Sent: Wednesday, April 07, 2004 6:14 PM
> To: Howard C. Berkowitz
> Cc: ccielab@groupstudy.com
> Subject: Re: OT: 4096 VLAN support
>
>
> 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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