The MPLS-OPS Archive[Date Prev][Date Next][Thread Prev][Thread Next] [Date Index][Thread Index][Author Index][Subject Index] RE: Question about L2VPN over MPLS
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 Layer 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 not 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 ------- The MPLS-OPS Mailing List Subscribe/Unsubscribe: http://www.mplsrc.com/mplsops.shtml Archive: http://www.mplsrc.com/mpls-ops_archive.shtml ********************************************************************** This e-mail message is confidential and is intended only for the use of the individual or entity named above and contains information which is or may be confidential, non-public or legally privileged. Any dissemination or distribution of this message other than to its intended recipient is strictly prohibited. You should not copy it or use it for any purpose nor disclose the contents to any other person. If you have received this message in error, please notify us by email to postmaster@flagtelecom.com immediately and delete the original message and all copies from all locations in your computer systems. This e-mail has been swept by Mailsweeper TM for viruses. However, FLAG Telecom cannot accept liability for any damage which you may sustain as a result of software viruses. ********************************************************************** This message has been scanned for viruses by MailControl - www.mailcontrol.com ------- The MPLS-OPS Mailing List Subscribe/Unsubscribe: http://www.mplsrc.com/mplsops.shtml Archive: http://www.mplsrc.com/mpls-ops_archive.shtml
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