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

"Andrew G. Malis" <agmalis@gmail.com> Thu, 23 July 2015 20:33 UTC

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From: "Andrew G. Malis" <agmalis@gmail.com>
Date: Thu, 23 Jul 2015 22:32:47 +0200
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To: Shahram Davari <davari@broadcom.com>
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Subject: Re: [mpls] draft-fang-mpls-label-forwarding-no-swap - how much does it really save?
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Sharam,

The point was made during the meeting that on the wire, "no swap" (but
still decrement TTL, etc.) is indistinguishable from "swap to the same
label". So this really is a local optimization in the switch, and not
subject to standardization.

Cheers,
Andy

On Thu, Jul 23, 2015 at 7:18 PM, Shahram Davari <davari@broadcom.com> wrote:

> I thought the idea was to decrement TTL and consider EXP bits for queuing
> and count as a hop so you can do OAM, etc.. Basically swap to itself.
>
> Thx
> Shahram
>