Q in Q, means that the provider does not need to remove his VLAN tags. The
customer's VLAN tags can survive teh VLAN tags that the provider adds.
Customer has VLAN 10. Provider tags VLAN20 on top, crosses network as
VLAN20 data, Provider untags VLAN20 data, packet delivered to customer on
VLAN10 (as customer tagged it originally).
An example of where its useful is... What if a customer has multiple
locations in a Wide Area PtMP topology, and wants the data seperated? What
if the Customer is another term for a wholesaler's reseller ISP? It gives
the customer/reseller the abilty to segment with VLANs, without respect to
what the provider may need to do with VLAN themselves.
This example is a little different than My last post, as noth VLAN taggers
may have their VLAN IDs pass multiple network segments. But the poitn is, it
doesn;t matter how dual VLANs are used, the flexibilty is there for a
Provider to take advantage of however they feel fit.
Tom DeReggi
RapidDSL & Wireless, Inc
IntAirNet- Fixed Wireless Broadband
----- Original Message -----
From: "Eric Rogers" <[EMAIL PROTECTED]>
To: "WISPA General List" <wireless@wispa.org>
Sent: Friday, June 09, 2006 12:51 PM
Subject: RE: [WISPA] looking for a device
It is also referred as 802.1q tagging... If it supports multiple layers,
you can have a customer VLAN tags within your network VLAN tags. Just
need your equipment that takes off your tags before it gets to the
customer.
AT&T uses the Cisco 3750 switches to do it at the customer's premises.
Then the customer can have VLAN 10 at one location and VLAN 10 at
another, and it is completely transparent to the end user.
If that made sense.
Eric
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of Charles Wu
Sent: Friday, June 09, 2006 11:34 AM
To: 'WISPA General List'
Subject: RE: [WISPA] looking for a device
Google (or Cisco) is your friend
http://www.cisco.com/en/US/products/sw/iosswrel/ps5207/products_feature_
guid
e09186a00801f0f4a.html
-Charles
-------------------------------------------
CWLab
Technology Architects
http://www.cwlab.com
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of John Scrivner
Sent: Friday, June 09, 2006 8:39 AM
To: WISPA General List
Subject: Re: [WISPA] looking for a device
Can you or someone explain what double VLAN is? I have never heard of
such a thing. How can it be used to help us?
Thanks,
Scriv
Yo may want to look at Alvarion. Alvarion does support VLAN. new
Firmware4 supports double VLAN also.
Alvarion used to have one model that was designed to have a second
integrated radio into it.
I can't remember if it was a 900/2.4 combo, or a 5.8/2.4 combo.
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