[Openswan Users] MTU issues in Hub and Spoke config

Peter Farrow peter at farrows.org
Thu Aug 17 17:12:15 EDT 2006

MTU problems are prolific,  I set all my MTUs to 1492 on all interfaces 
to fix this problem at all sites.

Additionally Windows 2003 server has an MTU bug as well


so you need to force the MTU setting on your 2003 servers if you have any...

Doing this fixed it for me even though its a total PITA


Jeremy Mann wrote:
>     I have a HUB-SPOKE arrangment, and whenever one spoke site wants to
> get to another, I get MTU issues.  They have none reaching the HUB 
> server.
> Any clues how I can debug this?  Even adding a MTU to each individual
> route doesn't help matters.  It looks like somewhere around 1450 the
> fragmentation occurs.
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