75 is the timeout. If the sending host does not receive a ACK before 75
seconds, then the host will receive an error. The retransmit times I believe
are 3,11,30,60 seconds apart.

I hope this answers your question.

Corey


Alwyn Goodloe
> 
> I got no response on a  previous posting hope I second post will be
>  luckier.
>  
>  --------------------
>  
>  I just need to make sure that I understand the code correctly in the TCP
>  stack. (We are trying to see how long the system waits before a SYN gets
>  retransmitted.)
>  
>   When a SYN is sent, a keepalive timer is set with using the
>  TCPTV_KEEPALIVEINTVL  = 75hz (??ms - escapes me at the moment). So an ack
>  must be received in this time frame???
>  
>    This is not the usual dynamic tetransmission timer which might make
>  sense for SYN packts.
>  
>    It seems like a retransmission timer should be set?? That's why I'm
>  posing the question.
> 
> Alwyn Goodloe
> [EMAIL PROTECTED]
> 
> 
> 
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