MTU mismatch on one link

Mike A mikea at mikea.ath.cx
Fri Aug 31 09:03:03 CDT 2012


On Fri, Aug 31, 2012 at 01:52:09PM +0000, Paul Vinciguerra wrote:
> You need to raise your MTU above that on the other side and do a ping size sweep.  Unlike at Layer-3 when you can use set a DF bit and get back an ICMP error, at Layer-2 when you exceed the far side's MTU, the packets are silently dropped.
> 

In the past, I've found a binary search on ping size to be very
efficient. YMMV, of course. 

-- 
Mike Andrews, W5EGO
mikea at mikea.ath.cx
Tired old sysadmin 



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