On Mon, Nov 15, 1999 at 11:28:11PM -0800, aphro wrote: > On Tue, 16 Nov 1999, Brian May wrote: > > bam >Anyone got any suggestions how to fix this problem? I have tcpdumped my > bam >side of the connection, and the problem seems to be my computer waiting > bam >ages for remote data. > bam > > bam >This problem is driving me up the wall - as I have 14.4kbps, I feel > bam >that I should be able to get close to 14.4kbps... > bam > > > next time it happens run a traceroute ..if it is timing out while in route > to the site..then the isp/routers are havin trouble if you get time outs > at hop 1 chances are your connection is screwed. id also suggest an
Thank you for the suggestion - during a break while nothing was being transmitted, I tried to ping to the source computer. I don't understand the results. When data is not being transmitted (but should be), ping reports small RTT values (ie no congestion), but when data is being transmitted, I get high RTT values (as expected). traceroute reports similar results. However, something has to be going wrong somewhere, otherwise my modem would be receiving data at 14.4kbs continuously until the file is transferred (or aborted). Sometimes pinging the remote host seems to provoke the data transfer to start again (or is this coincidence?) Also, I don't recall ever mentioning the word "timeout" in my previous post. (I think another poster was confused). While, yes, this problem is reponsible for aborting transfers due to time out errors (especially with apt-get), I want to make it clear that is *not* the problem I am talking about here. The problem I have is when transferring a file over a uncongested PPP link, the modem receive light stays off for extended periods of time, wasting time which could be used transferring the current file. Sometimes this lasts several minutes. This is my modem setup: AT&V ACTIVE PROFILE: B0 E1 L2 M1 N1 Q0 T V1 W2 X4 Y0 &C1 &D2 &G0 &J0 &K3 &Q5 &R1 &S1 &T4 &X0 &Y0 S00:000 S01:000 S02:043 S03:013 S04:010 S05:008 S06:004 S07:030 S08:004 S09:006 S10:018 S11:095 S12:050 S18:000 S25:005 S26:001 S36:007 S37:000 S38:000 S44:000 S46:138 S48:007 S95:000 Anything look wrong here? Anything dumb, like XON/XOFF flow control enabled when it shouldn't be? I can't find a manually right now to tell my what these codes mean :-( > upgrade to a faster modem :) a good 56k pci/isa modem can be had for about > $35 ..even if your lines dont support 56k you can at least do 28.8/33.6 > ..you might try different INIT strings too ..the one i use for my 56k > modem is about 50 characters long :/ i programmed it into the ROM now tho > so when i hit ATZ it uses that string. Good point. However, I am worried I would have the same problems with a faster modem, too. -- Brian May <[EMAIL PROTECTED]>
