SMC Router is suddenly slow (downstream only). Hardware defect? If yes, how to test? If no, what else?
Posted on 2007-11-25
I have been using my home network without any issues and SUDDENLY (yes, really ;-) no changes in config) my network is slow.
I am using a SMC router to connect to a ADSL 16 MBit network via PPPoE.
Hardware config looks like this:
Computer <-> Wireless SMC router <-> ADSL modem <-> Splitter (ISDN/ADSL) <-> Provider
Internet provider says I have a 14 MBit downstream and an 1.4 MBit upstream, which I used to be able to confirm.
Now, suddenly, my download rate has dropped, speed tests show:
Download: 108 kbit/s = 14 kByte/s which is double ISDN speed.
Upload is surprisingly still fast (1008 kbit/s).
Internet provider can see my bad downstream rate and tested some line parameters, no difference.
I don't understand what the suddenly drop could have caused.
I tested it with two different computers, same result.
I exchanged all hardware (except the router), same result.
I connected the computers directly to the router via cable, same result (well, double the speed, but that's normal for Wireless vs. cable).
I reset the router to factory settings, same result.
When I connect the computers directly to the DSL modem, then I get fast speed.
So everything points to a hardware defect of the router.
As I do not have a second router (to test) does anyone have an idea:
- Whether a router can suddenly "break" (one direction) and why this can be?
- How to test this (except buying a new router)?
- Whether it can be anything else and how to fix it?