On 10/25/13, 11:18 AM, Thomas Stokkeland wrote:
If you are not doing SAN stuff, or very large file transfers within
the collision domain - enabling Jumbo is likely to cause a crappier
performance than leaving it at the standard 1500MTU - because, the
router or receiving device will tell the sender to fragment, your
packet will be split in half, this retransmit attempt will happen
several times till the MTU is met - then as the "knowledge" of this
expires your device will have to do that over and over.. causing a ton
of extra traffic on your network.. so, if you don't have a requirement
to use large MTU, then turn it off - i suspect there are mechanisms in
the vpn software that either ignores large packets (because they are
not to be routed) or just can't handle fragmentation at that level
That makes sense - thanks for the explanation. I suffer the "If an
optional value is bigger, it must therefore be better/faster/more, so I
need to use it" syndrome.
--
Paul Theodoropoulos
www.anastrophe.com
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