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Re: exchange point media (was: Re: MAE-EAST Moving? ...)
From: "Bora Akyol" <akyol () akyol org>
Date: Wed, 14 Jun 2000 20:46:09 -0700

Has anyone seen a percentage of traffic that is statistically significant
for MTU's higher than 1500. Stats that I see pretty much show 99% of traffic
below 1500.


----- Original Message -----
From: "Brandon Ross" <bross () netrail net>
To: <nanog () merit edu>
Sent: Wednesday, June 14, 2000 7:35 PM
Subject: Re: exchange point media (was: Re: MAE-EAST Moving? ...)

On Wed, 14 Jun 2000, Mikael Abrahamsson wrote:

On Wed, 14 Jun 2000 dhudes () hudes org wrote:

Isn't the push to MAE-ATM ?

Are there any other suggestions, other than ATM?


Gigabit ethernet sounds nice but the MTU of 1500 is really restricting
that technology.

While there are certainly shortcomings to using GbE as a public exchange
infrastructure, I fail to see how a 1500 byte MTU has anything to do with
it.  In every network I have ever seen, there have very, very rarely been
any packets larger than 1500 bytes.

The only case that I can think of where that becomes important is in a
MPLS exhange model where adding the label to large packets would cause
fragmentation or broken TCP sessions for the PMTUD challenged.

Brandon Ross                                                 404-522-5400
VP Engineering, NetRail                            http://www.netrail.net
AIM:  BrandonNR                                             ICQ:  2269442
Read RFC 2644!
Stop Smurf attacks!  Configure your router interfaces to block directed
broadcasts. See http://www.quadrunner.com/~chuegen/smurf.cgi for details.

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