On Sat, 13 Dec 2003 08:52:41 -0800 (PST) Joshua Banks <[EMAIL PROTECTED]> wrote:
> > MSS should be MTU - 40. But I don't think netstat is telling the > > truth here... > > What makes you say the above Dennis? I would like some facts if > possible. From what I've read and come to understand sofar is that both > an IP header and TCP headers are 20 bytes in size. So this value would > = 40. > So are you saying that Netstatand Route somehow says "no matter what" > subtract -40 bytes for IP and TCP headers? > Somehow that seems just as strange as your output of MSS ='ing "0". But > then again this is all pretty new to me so I will be researching more > of this as well as TCP and MSS and ethernet standards. Didn't find an english page to explain that, but here is a german link: http://www.sauff.com/dsl-faq/mtu-mini-faq.html MSS for ethernet devices should be 1460 and for xDSL (which often uses 1492 as MTU) it should be 1452. 40 bytes refers to the size of the IP-Headers. That's a fixed value. But please, investigate this, I would too be interested why the values are wrong. -- Dennis Freise <[EMAIL PROTECTED]> GnuPG key fingerprint: 2DE8 CCEF 6E20 11D4 3B27 21EC B0BA 1749 D2C8 38ED Get my public key at : http://www.final-frontier.ath.cx/gpg_public_key.txt
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