I disagree that many providers have used open source to their
advantage. Certainly, many providers have used open source to save
money over competitors, but have they beaten those competitors using
their open source advantage? I'd suggest most have just squabbled
whatever cost advantage they had with open source due to errors in
their model elsewhere. How is it that companies who build their
network with expensive name brand gear often are more successful?
-Matt
On Jun 13, 2006, at 9:02 PM, Tom DeReggi wrote:
Matt,
You brought up an excellent point regarding management gains with
MPLS.
In many cases, I'd argue MPLS the preferable choice. But MPLS is
not always a viable choice, that VLAN can deliver viably.
What I mean by that is... There is not yet a complete/stable/tried-
and-true MPLS Open Source product on the market. (they exist but
not recently updated or supported). Many providers have used Open
Source to their advantage. Selecting MPLS may also mean migrating
to a new foundation behind one's network. From Open Source to Name
Brand. I'm not saying thats a bad thing. I'm just saying it might
be more than a provider wants to do to accomplish their goals.
VLAN allows an ISP to just drop it in. The trade off is a
management headache. These comments are meant as a very
generalized comment, there are obvious many exceptions to the view..
Tom DeReggi
RapidDSL & Wireless, Inc
IntAirNet- Fixed Wireless Broadband
----- Original Message ----- From: "Matt Liotta" <[EMAIL PROTECTED]>
To: "WISPA General List" <wireless@wispa.org>
Sent: Tuesday, June 13, 2006 7:58 AM
Subject: Re: [WISPA] looking for a device
Charles Wu wrote:
It is worth noting that you lose the benefits of routing
protocols when you
bridge your network
The above is the number one reason against using VLANs for layer 2
transport. A second important issue to consider is management.
Every device from end-to-end where you want to deliver layer 2
transport requires configuration if you use VLANs.
Both of the above issues are solved with MPLS. First, MPLS rides
on top of your layer 3 network giving you all the benefits of
routing protocols. Second, you only need to configure the edge
device on either side of a layer 2 virtual circuit. All the
devices in-between --including protection paths don't require
additional configuration for each virtual circuit.
-Matt
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