I was wondering whether LL (link layer) implemented in current version
includes timer mechanism.

I plan to have two node connected to LAN and have them send data with
acknowledgment mode of LL. I could not find a hint in the latest
ns-manual whether a retransmission request is abandoned once there is
not reply in some predefined time?


host1 <==========================> host2
(sender)        ethernet         (receiver)

Once host2 detects a missing frame, it requests host1 to resend the
concerning frame. However it would not wait forever for retransmission
of this frame. After a timer is expired, this frame is marked as
missing. This is how standard (RFC) says.

I do not know whether something like is enabled in current version of

Your thoughts are much appreciated.



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