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kamalpr
kamalpr
12/5/2012 | 2:20:47 AM
re: Routers Are Winning the MPLS War

A router is a device with s/w that uses dumb hardware to speed up processing.
A switch is a device with intelligent h/w that uses dumb s/w to add on functionality.

Does someone know why lucent called their aborted product lambda router ?

regards
-kamal
Tony Li
Tony Li
12/5/2012 | 2:20:44 AM
re: Routers Are Winning the MPLS War

I was under the impression that it was their ploy to (a) justify higher margins and (b) confuse the unwary consumer.

Tony
dgolding
dgolding
12/5/2012 | 2:20:43 AM
re: Routers Are Winning the MPLS War
That seems pretty unlikely - as if Cisco could get their feelings hurt and is in a prolonged sulk? Wierd.
Belzebutt
Belzebutt
12/5/2012 | 2:20:41 AM
re: Routers Are Winning the MPLS War
Does someone know why lucent called their aborted product lambda router ?

Because "LambdaPatchPannel" doesn't sound as good.
Ibeenframed
Ibeenframed
12/5/2012 | 2:20:35 AM
re: Routers Are Winning the MPLS War
In a more practical sense, switches (read ATM based switches) need a means of rebuilding an IP packet in order to make a L3 forwarding decision. This can be done with a ATM cards that can rebuild the PDU, match that to the forwarding table, SAR the PDU again and forward the cells. This may also be done on a portless router blade (aka - Cisco 8950 RPM) doing the same thing.

It it's an Ethernet switch then ignore the previous paragraph.
Blaine
Blaine
12/5/2012 | 2:20:31 AM
re: Routers Are Winning the MPLS War
I would take the IP vs. switch line since I think that was the thrust of the article (versus routing/switching).

I suspect what the author was trying to get across was that IP routing (and the hierarchy packet inspection etc etc you get by default with it) is an early leader in the race towards convergence.

In many cases the hardware vendors are unprepared to do deep inspection of switched packets and there is not a whole lot of hierarchy available within MPLS etc... that scales quite as well as something like the Internet/IP has.

I suspect that we will see a continued combination of MPLS and IP routing as the gold standard for convergence. They both have strong capabilities that should be exploited for all they are worth.

It is convenient that they are packaged so closely together that we can leap from one to another as the need arises. MPLS helps to defeat some of the issues that IP has in circuit/traffic optimization and IP is just incredibly scalable.

justapeon
justapeon
12/5/2012 | 2:20:24 AM
re: Routers Are Winning the MPLS War
>Does someone know why lucent called their
>aborted product lambda router ?

Your questions is orthogonal to this thread.

The LU Lambda Router was a dynamic layer 1 circuit switch. They attempted to make it intelligent by adding a control plane function but the project failed. The product never had nor was it designed for per-packet switching capcbilities. The core of the system was an all optical MEMS subsystem which was really just a fancy analog light deflector-- truly tiny tilting mirrors. Switching times were on the order of high tens or low hundreds of milliseconds, so as you can see wholly unsuited, and thus orthogonal to a packet [switching|routing] discussion.
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