Home page logo
/

nanog logo nanog mailing list archives

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.

Bora

----- 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?

[snip]

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.






  By Date           By Thread  

Current thread:
[ Nmap | Sec Tools | Mailing Lists | Site News | About/Contact | Advertising | Privacy ]