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Re: [ns] TCP ???
The second one.
Did TCP ever adopt the first strategy
since fast retransmission is integrated into TCP?
----- Original Message -----
From: "Arijit Ganguly" <[email protected]>
To: <[email protected]>
Sent: Thursday, June 14, 2001 10:40 PM
Subject: [ns] TCP ???
> Hello seniors
>
> Please let me know which one of the following two strategies is
> implemented in ns2 TCPReno.
>
> A TCP receiver(TCPSink), this accepts a packet only when its
> sequence number is equal to the one which it is expecting, discarding
> all other packets. (go back n). This way all packets sent following a
> loss will trigger duplicate acks.
>
> Or the TCPSink agent, has some buffering to accept packets which fall
> within in receiving window(may be not the same as what it is expecting).
> This way a gap in the sequence number can filled up later, without having
> to retransmit all packets again.
>
> I would also like to know which one of the strategies is implemented in
> TCP/IP stack of modern operating systems.
>
> Please reply
> Arijit
>
>