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Solved
CM600 cable modem failing after large downloads
Hi-
I'm using a CM600 modem with a WNDR-3700v4 router.
Recently, the cable modem has started behaving very oddly after downloading large files (1GB or so seems to be the trigger point). After the download completes, I begin to experience excessive latency and packet loss to external sites. Ping times jump from about 20ms to over 3000ms and packet loss goes from 0% to over 50%. Rebooting the cable modem does correct the issue until I download another large file. Interestingly, I found that if I disconnect the LAN cable from the cable modem when it is malfunctioning, the modem still shows a LAN link and activity on it. I would expect the link to drop and activity to cease when it's physically disconnected. I swapped out the ethernet cable and it made no difference.
Do any of you fine people have any ideas?
Many thanks!
The modem has been replaced and the issue has disappeared. Yay warranty.
5 Replies
Hello pshirt
you could try to factory reset the modem also you may want to try and connect a PC directly to the modem and download a large test file and see if the same thing happens when its not connected to the router to make sure its the modem having the issue and not some strange conflict between the 2 devices.
DarrenM
- Also if you could can you what the MSO and power status is plus what firmware version the modem is on. you should be able to see this when you go to 192.168.0.1 in your web browser. DarrenM
OK. I hit up 192.168.100.1 and it says:
Hardware Version
1.01B
Firmware Version
V1.01.05
I'm not sure what you mean by MSO and power status.
