TCPIP MTU settings
Robert Moskowitz
rgm at icsa.net
Mon Jul 19 11:19:41 EDT 1999
At 09:36 AM 7/19/99 +0100, guy.raymakers at europe.eds.com wrote:
>
>The remote network (offices) have a NT server and an IPsec enabled router. The
>router encapsulates the TCP/IP packets into IPsec packets. When using the
>default tcpip MTU ( = 1500), on the NT server, we get problems when doing
file
>transfers. When we lower the tcpip MTU to 1444 we don't have these problems.
>The remote office ISP is a different one then our ISP.
>
THere is extensive discussion in the IPsec specification about potential
MTU issues (MObileIP does likewise). You have two choices: MTU discovery,
or static reduction of MTU to get through the tunnel.
Robert Moskowitz
ICSA, Inc.
(248) 968-9809
Fax: (248) 968-2824
rgm at icsa.net
There's no limit to what can be accomplished
if it doesn't matter who gets the credit
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