From: "Geo" 

"John Beckett"  wrote
in message news:428dc7e8.17580899{at}216.144.1.254...

> OK but my point is that on your local network you can send a single IP
> datagram that is almost 64K bytes (with the ping -l option; actually ping
> usually doesn't allow numbers much above 60,000 or so). The datagram will
> be fragmented, but logically it is a single message.

When you do this on your local network, is it the computer or the router
that's going to fragment the packet? What if your local network has 2
routers and between your computer and router 1 the mtu is 1500 but between
the two routers it's 1490, where is the fragmentation conducted in that
case?

I'm asking this because several times I've had to troubleshoot slow dsl and
found the cause was a dsl router that had the wrong mtu setting. Fixing
that setting solved the speed issues. I'm suggesting that this might be
possible for the UDP test we are discussing.

Geo.

--- BBBS/NT v4.01 Flag-5