Extremely slow upload speed on Airport Extreme

Question

I've had a perfectly working Airport Extreme for about 3 years now and suddenly the other night it decided it would slow it's upload speed to a crawl. Speedtest.net gives me an upload speed of 15-20 Mbps download speed but a tiny .07 Mbps upload speed.  I've been through the forums and ttried changing my Ethernet WAN Port settings to 1000 Mbsp and 100 Mbps instead of Automatic and I still have the same issue with 100 setting and it won't even connect at the 1000 setting.  I've tried prior software versions (was running 7.6.1), restarting, and reverting to the factory settings and setting up a new network all to no avail.   Does anyone have any ideas?
Thanks!

Answer 1

I've been through the forums and ttried changing my Ethernet WAN Port settings to 1000 Mbsp and 100 Mbps instead of Automatic and I still have the same issue with 100 setting and it won't even connect at the 1000 setting.
Unless your modem supports Gigabit Ethernet connections then setting the WAN port on the Extreme to 1000 will not work. Have you tried both of the 100 Mbps settings ... i.e., both Full and Half-Duplex?
The key here is what may have changed between the AirPort and the modem that could have caused your upload speed to drop. Depending on the generation of your AirPort, it can support LAN-to-WAN speeds up to 400 Mbps.
If changing the WAN setting doesn't help, I would suggest two things: 1) Reset the WAN setting to Automatic, and 2) Perform a complete power recycle of your networking equipment, as follows:
I would recommend that you do the following as a minimum:
Power-down the modem, AirPort base station, and computer(s).
Power-up the modem; wait at least 10-15 minutes to allow it adequate time to initialize.
Power-up the AirPort base station; wait at least 5-10 minutes. Note: The AirPort's status light may continue to flash amber after it has intialized. That is because, there may be some additional configuration items necessary, like setting up wireless security, before the overall setup is completed to get a green status.
Power-up your computer(s).
If the above steps do not solve the problem, start over with step 1 above, but then perform the next steps between steps 1 & 2. above.
Disconnect the AirPort base station from the Internet broadband modem.
While all of the devices are powered-down, perform a "factory default" reset on the base station. This will get it back to its "out-of-the-box" configuration and make setting it up much easier, especially if you use the "Assist me" process within the AirPort Utility. (ref:Resetting an AirPort Base Station or Time Capsule)
After the base station resets, go ahead and power it back down.
Reconnect the AirPort base station to the Internet broadband modem. For the Extreme and Time Capsule, be sure to connect the cable to the base station's WAN (circle-of-dots) port.
Continue with step 2 in the first set of steps.
In this basic configuration, the AirPort base station will broadcast an unsecured wireless network with a Network Name (SSID) of Apple Network NNNNNN. Network clients, connected to the base station either by wire or wireless, should now be able to access the Internet through the ISP's modem. Once Internet connectivity has been verified, you can use the AirPort Utility to configure the base station for wireless security and any other desired options. Please post back your results.