[188130] in North American Network Operators' Group

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Re: Internet Exchanges supporting jumbo frames?

daemon@ATHENA.MIT.EDU (Saku Ytti)
Wed Mar 9 16:20:17 2016

X-Original-To: nanog@nanog.org
In-Reply-To: <56E08757.8050801@foobar.org>
Date: Wed, 9 Mar 2016 23:19:46 +0200
From: Saku Ytti <saku@ytti.fi>
To: Nick Hilliard <nick@foobar.org>
Cc: NANOG list <nanog@nanog.org>
Errors-To: nanog-bounces@nanog.org

On 9 March 2016 at 22:28, Nick Hilliard <nick@foobar.org> wrote:
> iirc, we had problems with a bunch of ios based platforms.  It worked
> fine on junos / xr platforms.  I share your surprise that this could
> even have caused a problem, but it did.

This is very poor reason to kill it for everyone, 'I recall I may have
found platform where it maybe didn't work'.

Yet, it's super common go have L3Termination - L2Aggregation - Customer.

And sell various MTU options to customers, even use the L2Aggregation
as core between two L3Termination. All of these require per
logical-interface L3 MTU, while L2 MTU is usually set to max.
From Cisco, I've done this at least on 720x, 7301, 7304 NPE/NSE, 7600,
6500, GSR, CRS-1, ASR1k, ASR9k, 2600, 3600, ASR9k, probably some
others too.

-- 
  ++ytti

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