Re: FBSD 4.3 New Reno Fast Retransmit Behavior

2002-05-15 Thread Brian White
I've been comparing simple ns drop experiments with FreeBSD. Based on your explanation (below), I've accounted for one difference and switched to FreeBSD 4.5. I'm seeing another discrepancy and would like to verify that it is intended behavior. Though this is related to my original questioni

FBSD 4.3 New Reno Fast Retransmit Behavior

2002-05-04 Thread Brian White
I'm seeing what I believe to be a bug in FreeBSD 4.3's New Reno fast retransmit algorithm-- delays of up to 1 second between retransmissions. Would someone please verify and/or correct me? If this is a bug, has it been fixed? I'm using dummynet between two nodes to drop the 10th _data_ pack

SACK (and older TCP stack) availability?

2002-02-20 Thread Brian White
To compare against simulation, I'm trying to collect any available TCP implementations -- preferably compatible with a recent(ish) kernel. We run 4.3, but could upgrade. I was hoping to find the usual suspects -- Tahoe, Reno, Vegas, New-Reno, and SACK. I realize this question is probably bette