[j-nsp] L2VPN MTU Issue

[Dermot Williams]

Hi Eric,

Unless it's sensitive, would you mind sharing how you arrived at that
number please?

Thanks,

Dermot

-----Original Message-----
From: juniper-nsp-bounces at puck.nether.net
[mailto:juniper-nsp-bounces at puck.nether.net] On Behalf Of Eric Van Tol
Sent: 29 September 2010 15:34
To: juniper-nsp
Subject: Re: [j-nsp] L2VPN MTU Issue

> -----Original Message-----
> From: juniper-nsp-bounces at puck.nether.net [mailto:juniper-nsp-
> bounces at puck.nether.net] On Behalf Of Eric Van Tol
> Sent: Wednesday, September 29, 2010 6:19 AM
> To: juniper-nsp
> Subject: [j-nsp] L2VPN MTU Issue
> 
> Hi all,
> I'm having an issue with an L2VPN customer at the moment. They need to
be
> able to pass 1500-byte IP packets between two locations connected via
an
> ethernet encapsulated L2VPN.  I am able to ping from PE to PE with
1500-byte
> sized packets with the df-bit set without a problem.  The L2VPN
connection is
> up and the customer can get a max of 1490-bytes through without
> fragmentation.  My LSP shows an MTU of 1500:

For historic purposes, the solution was to change my MPLS MTU to 1528
throughout the network.  Now that I see the number, it should have been
more obvious to me.

Thanks to those who responded, but public and private.

-evt

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