Philip Lavine wrote: > I just don't understand how if there is 1 segment that gets lost how this > could translate to such a catastrophic long period of slow-start. How can I > minimize the impact of the inevitable segment loss/out of order over a WAN. > Is QoS the only option?
Different tcp congestion control algorithm... Instead of tcp reno use vegas or westwood? > ----- Original Message ---- > From: Stephen Wilcox <[EMAIL PROTECTED]> > To: Philip Lavine <[EMAIL PROTECTED]> > Cc: nanog <[email protected]> > Sent: Thursday, July 12, 2007 1:09:24 PM > Subject: Re: TCP congestion > > Well, if its out of order its the same as if its lost or delayed, it needs to > see that missing segment before the window is full > > As mentioned you need to get dumps from both ends, you will almost definitely > find that you have packet loss which tripped tcp's slow start mechanism. > > Steve > > On Thu, Jul 12, 2007 at 12:02:49PM -0700, Philip Lavine wrote: >> Even if the segment was received out of order what would cause congestion >> avoidance to starve the connection of legitimate traffic for 15 to 20 >> seconds? That is the core of the problem. >> >> ----- Original Message ---- >> From: Fred Baker <[EMAIL PROTECTED]> >> To: Brian Knoll <[EMAIL PROTECTED]> >> Cc: Philip Lavine <[EMAIL PROTECTED]>; nanog <[email protected]> >> Sent: Thursday, July 12, 2007 11:56:06 AM >> Subject: Re: TCP congestion >> >> >> On Jul 12, 2007, at 11:42 AM, Brian Knoll ((TTNET)) wrote: >> >>> If the receiver is sending a DUP ACK, then the sender either never >>> received the first ACK or it didn't receive it within the timeframe it >>> expected. >> or received it out of order. >> >> Yes, a tcpdump trace is the first step. >> >> >> >> >> >> >> ____________________________________________________________________________________ >> Be a better Globetrotter. Get better travel answers from someone who knows. >> Yahoo! Answers - Check it out. >> http://answers.yahoo.com/dir/?link=list&sid=396545469 > > > > > > > ____________________________________________________________________________________ > Pinpoint customers who are looking for what you sell. > http://searchmarketing.yahoo.com/ >
