Its perhaps something running in the background that is using up your bandwidth.
I had a similar problem where my ISP were telling that I was using my entire 512K connection when I was only uploading one item at 31K. I shutdown segments of the network and disconnected the one system that was uploading. I discovered that a bug was dropped on one of my system which was just uploading stuff to the internet. Check to see if you have any Denial of Service (DoS) bugs sending out something from within your network. There are very difficult to spot. You will have to get some sort of sniffer programme. David J. ----- Original Message ----- From: "Bill Landry" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Tuesday, September 02, 2003 4:25 PM Subject: Re: [IMail Forum] OT- Packet/Network Sniffers > Have your T-1 provider take a look at the circuit while trying to upload and > download a file and see if they are logging any errors. Over the past 7 > years we have had three different T-1s from different providers have issues > with one-way traffic, and each time it was a problem on the T-1 circuit > itself. > > Good luck! > > Bill > ----- Original Message ----- > From: "Troy Hilton" <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]> > Sent: Tuesday, September 02, 2003 11:07 AM > Subject: RE: [IMail Forum] OT- Packet/Network Sniffers > > > > Hmm. Well let me also say that I experience the same thing from my system > at > > the office and I'm on a T1 line as well. > > > > Troy > > > > > -----Original Message----- > > > From: [EMAIL PROTECTED] > > > [mailto:[EMAIL PROTECTED] Behalf Of E. Shanbrom > > > (Ipswitch) > > > Sent: Tuesday, September 02, 2003 1:00 PM > > > To: [EMAIL PROTECTED] > > > Subject: Re: [IMail Forum] OT- Packet/Network Sniffers > > > > > > > > > In most cases it is probably an MTU mismatch for their connection > > > speed...you can get a free tool to check this at > > > > > > http://www.dslreports.com/front/drtcp.html > > > > > > Eric S > > > ----- Original Message ----- > > > From: "R. Scott Perry" <[EMAIL PROTECTED]> > > > To: <[EMAIL PROTECTED]> > > > Sent: Tuesday, September 02, 2003 12:50 PM > > > Subject: Re: [IMail Forum] OT- Packet/Network Sniffers > > > > > > > > > > > > > > >I need some advice here. I've got as user having problems with his > FTP > > > > >upload to our web server and I can't figure out why. The upload is > > > running > > > > >REALLY slow (anywhere from 3k to 15k) but download seems to be pretty > > > good. > > > > > > > > Is the user using an asymmetrical cable/DSL connection? For > > > example, you > > > > may have 1.5MB download and 128K upload, which would produce a maximum > > > > upload speed of under 15K. > > > > > > > > >I'd like to use a tool to > > > > >analyze the network traffic to see if I can find a bottleneck > > > somewhere. > > > > >What packet sniffers do folks use and can recommend? I'm a > > > novice at this > > > > >type of stuff so I'd like something that's pretty easy to figure out. > > > > > > > > A packet sniffer likely won't help much here -- while it will show the > > > > packets that come and go, and when they were sent, it won't be able to > > > > detect a lot of possible causes (such as a cable modem that throttles > to > > > > 128K, or an FTP server saving to a drive with very slow write speeds). > > > > > > > > If you want to use one, you might want to try out Ethereal ( > > > > http://www.ethereal.com/ ), which is free and works very well. > However, > > > be > > > > warned that it takes a lot of time to figure out how to interpret > packet > > > > sniffs, how to set up useful filters, etc. > > > > > > > > -Scott > > > > --- > > > > Declude JunkMail: The advanced anti-spam solution for IMail > mailservers. > > > > Declude Virus: Catches known viruses and is the leader in mailserver > > > > vulnerability detection. > > > > Find out what you have been missing: Ask for a free 30-day evaluation. > > > > > > > > --- > > > > [This E-mail was scanned for viruses by Declude Virus > > > (http://www.declude.com)] > > > > > > > > > > > > To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html > > > > List Archive: > > > http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ > > > > Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/ > > > > > > > > > > > > > To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html > > > List Archive: > http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ > > > Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/ > > > > > > > > > To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html > > List Archive: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ > > Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/ > > > > > To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html > List Archive: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ > Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/ > To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html List Archive: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/
