Internet Troubles Vid 2 - ISA Server Transmits Packets But Does Not Receive Packets

Complete Computer Solutions uses Timer Warner Cable as it's Internet service provider. Periodically (every 1-2 months) the cable modem stops responding. Time Warner Cable has replaced our modem 3 times. The second modem was of a newer design and was dead upon connection/setup. The third was also of the same new design and appeared to function properly. The forth modem is a completely different brand (ZyZEL) than the previous 3 modem's brand (Ambit) and is touted, by several Time Warner Cable representatives, as the best cable modem they provide for commercial customers. Time Warner Cable has checked, rechecked, and replaced cable runs. Our modem simply goes into a nonresponsive state and will NOT return to operation until it is manually power cycled. This presents a huge problem since our entire phone system which uses VOIP (Internet telephone) for all office branches, our web servers for our company website and all of our customer's websites, our credit card processing (again for all branches), and our email servers use this connection in some form to function properly.

In this video, I'm showing our ISA server (our internet gateway) transmit packets to our modem, but not receive packets. Note that we ARE looking at the WAN interface, and over the course of its 1.5 days since last reboot for updates (gotta love Windows) the server has sent and received traffic. Note now that it only sends packets to the modem (left #s under 'Activity' area), but does not receive any response packets from the modem (right #s under 'Activity' area).

Category:

Science & Technology

Tags:

• Time
• Warner
• Cable
• Modem
• PING
• Downtime
• Uptime
• ISA
• Server
• Complete
• Computer
• Solutions

[SynchronousChaos]

Just to be sure... are you torrenting? Often, not capping your upstream bandwidth will interfere with your downstream bandwidth.

[archangel1092]

I have the similar thing. Most of the time i get sent these packets but do not receive the majority of them making my internet extremely slow. No idea why.