Re: [mpls] draft-fang-mpls-label-forwarding-no-swap - how much does it really save?

Gregory Mirsky <> Tue, 28 July 2015 14:58 UTC

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From: Gregory Mirsky <>
To: "Andrew G. Malis" <>, Stewart Bryant <>
Thread-Topic: [mpls] draft-fang-mpls-label-forwarding-no-swap - how much does it really save?
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Subject: Re: [mpls] draft-fang-mpls-label-forwarding-no-swap - how much does it really save?
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It does remind me of the discussion around T-MPLS. After couple years we’ve managed to shape it into MPLS-TP and, I hope, learned a thing or two. So, may be another profile of MPLS is due this time?


From: mpls [] On Behalf Of Andrew G. Malis
Sent: Tuesday, July 28, 2015 4:50 AM
To: Stewart Bryant
Cc:; Robert Raszuk
Subject: Re: [mpls] draft-fang-mpls-label-forwarding-no-swap - how much does it really save?

Stewart has it right:

On Mon, Jul 27, 2015 at 10:30 AM, Stewart Bryant <<>> wrote:
If that is not a requirement in your world, then I suggest
that you get a new ethertype and call it MPLS2

This is enough of a deviation from the millions of devices in the installed base that you can just get a new Ethertype and optimize to your heart's content. You're going to need new ASICs anyway, may as well go all the way. This also removes the need to do any sort of peer capability negotiation for backwards compatibility, and gives you the freedom to produce devices that ONLY support MPLS2 if you so desire, to have a less expensive and optimized data center solution. I would support standardization in this case.