[c-nsp] Best practice, MPLS and MTU settings

Mack McBride mack.mcbride at viawest.com
Fri Oct 25 16:00:44 EDT 2013

I concur with 9100.
Which providers have you run into problems with 9100?
I know certain cisco gear doesn't support packets that big for certain links.
The 3750/3560 series for example only support 9000 on gigabit interfaces and much smaller on 10/100 ports.

LR Mack McBride
Network Architect

-----Original Message-----
From: cisco-nsp [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Nick Hilliard
Sent: Thursday, October 24, 2013 8:40 PM
To: Eric A Louie; Cisco NSP
Subject: Re: [c-nsp] Best practice, MPLS and MTU settings

On 25/10/2013 09:32, Eric A Louie wrote:
> If you used the method of increasing the MTU, what value did you use?

I aim towards a 9100 byte ip mtu, in order to guarantee a 9000 byte MTU for customers with plenty of overhead on our side.  Sometimes this isn't possible due to third party provider core link restrictions.


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