The MPLS-OPS Archive

[Spice Sylvia <falsesylvia@yahoo.co.uk>]

Hi,

 

So the way I see it from what you are saying is that "if a customer wants DS-TE or no TE/no SLA driven" layer 2 connection, L2VPN makes sense.

 

that seems fair enough.

"Khan, Amjad" <akhan@flagtelecom.com> wrote:

> How about thinking beyond ethernet? 
> L2VPN is same as buying leased lines but over MPLS tunnels and ofcourse much
> cheaper and perhaps with little or no QOS. It does seem attractive and has
> some utility that all I need is to pay for local tails at end A and Z and a
> small amount for the VPN pipe.
>
>
> -----Original Message-----
> From: sthaug@nethelp.no [mailto:sthaug@nethelp.no]
> Sent: 24 March 2004 12:48
> To: falsesylvia@yahoo.co.uk
> Cc: mpls-ops@mplsrc.com
> Subject: RE: [MPLS-OPS]: Question about L2VPN over MPLS
>
>
> > I agree L2VPN does have a market [forgive the sarcasm but so does poison
> :)].
> > 
> > The point I do not quite get is why would the end user want a termination
> point on a Packet switching device with the SP?
> > 
> > Are you saying that the cost difference between buying a Layer 2 switch
> versus a La!
>  yer 3
>  switch is "so highly significant"?
>
> I don't know the customers' motives. All I can say is that
>
> - There are definitely customers who are happy to get a packet (Ethernet)
> interface from the provider - this is independent of whether the provider
> sells VPLS or not. Some reasons for wanting an Ethernet interface are:
> Less expensive than many traditional types of interfaces, more easily
> upgradable bandwidth.
>
> - Of the customers that want an Ethernet interface from the providers, 
> there are some that would like to run point to multipoint - and this is
> then the market for VPLS. An example: Only yesterday we had a customer
> who wanted to run Cisco switches as a "stack" (manageable as one unit)
> at several different physical locations (one stack spanning locations A,
> B, C, etc). We have tried to discourage the customer a bit - saying that
> this is not necessarily a good idea. But that's what the customer wanted!
>
> > Why would he n!
>  ot buy a
>  Layer 3 switch (if what he wants is ethernet) ,
> take a link and connect it off to the SDH/SONET multiplexer provided by the
> SP and use the same? What is the benefit he gets by terminating at a Packet
> switching kind of device on the SP end?
>
> See above. An additional reason is that the least expensive links now
> are often DSL based, with a pure bridge-type CPE box (with Ethernet
> interface).
>
> Steinar Haug, Nethelp consulting, sthaug@nethelp.no
>
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