Cannot set DF-bit globally

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May 8th, 2007
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I have a asa5510 and when I scp from the VPN client to an inside server the transfer starts and slowly drops in speed until I see a stalled message.


Everywhere I read suggests it is the df-bit problem. I tried to set the df-bit to clear globally with:


crypto ipsec df-bit clear


However, the asa5510 v7.1(2) software apparently requires an interface spec so I have to do a:


crypto ipsec df-bit clear outside


I have to do this on all the interfaces. Is there a way to do this globally AND is this really my problem?


Thnx,


-Rick

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carenas123 Mon, 05/14/2007 - 10:30
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The problem may be due to high fragmentation. To fix the fragmentation issue, configure a class-map and add it to the MPF global-policy to allow packets with a larger MSS from that server.

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