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[Openvpn-users] Determining --fragment directive size


  • Subject: [Openvpn-users] Determining --fragment directive size
  • From: "John A. Sullivan III" <jsullivan@xxxxxxxxxxxxxxxxxxx>
  • Date: Mon, 06 Feb 2006 02:33:05 -0500

I'm a little unclear about how to calculate the value for fragment.
>From the man page:

The max parameter is interpreted in the same way as the --link-mtu
parameter, i.e. the UDP packet size after encapsulation overhead has
been added in, but not including the UDP header itself.

So if I have an MTU of 1500, do I set fragment to 1472, i.e., 1500 minus
8 bytes for the UDP header minus 20 bytes for the IP header? Of course,
I would guess that if I have an MTU of 1500, I do not need to set
fragment, do I?

Thanks - John
-- 
John A. Sullivan III
Open Source Development Corporation
+1 207-985-7880
jsullivan@xxxxxxxxxxxxxxxxxxx

Financially sustainable open source development
http://www.opensourcedevel.com


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