Subject: forward progress reg

From: "Arun" <[email-masked]>
Date: Mon, 8 Apr 2002 09:43:41 +0100

Hi all,
        
        I am pretty new to this working group. I have a question regarding  forward progress described in the RFC 2461. At what instance of a connection , TCP or anyother connection oriented protocol will inform the IP about a forward in progress?. 

RFC 2461 says 

"  When possible, upper-layer protocols provide a positive confirmation that a connection is making "forward progress", that is,  previously sent data is known to have been delivered correctly (e.g.,   new acknowledgments were received recently).  "

    What time should IP expect this hints from the upper layer protocol ? Will it be with all the packets sent from the upper layer or do we have any mechanism like a setsockopt () so that the upper layer can inform the IP about the forward progress? Please help.

Thank You in advance

(Arun Jose)