John Mullan wrote:
For windows registry settings, see one of the many speed-tweak sites on the 'net, for example:Charles (and all). I'd be quite interested in any information that would optimize the "path MTU" within Bering between my Windoz boxes and my PPPoE connection (DSL modem of course).Could someone point in the right direction?
http://www.speedguide.net/Cable_modems/cable_registry.shtml
It is also possible to control MTU size with the 2.4 kernel, where the kernel over-writes the portion of the TCP header that indicates the maximum allowable segment size, so the two ends negotiate a MSS smaller than your MTU without requiring registry tweaks. Some details about how this works are available in the advanced routing HOWTO:
http://www.linux.org/docs/ldp/howto/Adv-Routing-HOWTO/lartc.cookbook.mtu-discovery.html
http://www.linux.org/docs/ldp/howto/Adv-Routing-HOWTO/lartc.cookbook.mtu-mss.html
There's also a bit of general info on MTU problems in the FreeS/WAN docs (an IPSec VPN solution for linux), with a lot more detailed information in the mailing list archives, if you really want to get into the nitty-gritty:
http://www.freeswan.org/freeswan_trees/freeswan-1.99/doc/background.html#MTU.trouble
http://www.freeswan.org/mail.html
--
Charles Steinkuehler
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