A couple days ago I started having trouble with my cable internet. I have Comcast high speed and a Scientific Atlanta DPX2100 modem. I'm also using a D-Link DWR-2310 router. A couple days ago my internet just stopped working. I didn't get a disconnected popup or anything, the internet just wouldn't work. Now this is common, it happens occasionally and is easily fixed by resetting the modem and router.
So I do that and it's fixed, then a few hours later the same thing happens. Now this has been happening constantly over the past few days. I'm forced to reset my modem about every hour. I've tried various things and I think I narrowed the cause down to the modem. So I'm gonna have Comcast come look at it soon.
I'm pretty sure it's the modem. I've tried other things. I don't think it's software related because the other PC in my network and my Xbox and my PSP all stop working when this happens. I also don't think it's the router. I re-installed the router, updated it's firmware, re-installed it again, and the problem is still happening. So I don't think it's the router or software. I found out that I don't have to reset my router to get the net working again, I just have to reset the modem.
If it helps, here are the logs from my modem: (for some reason the dates are messed up)
Time Not Established critical DHCP WARNING - Non-critical field invalid in response.
TUE JUL 26 20:02:51 2005 critical No UCD's Received - Timeout
TUE JUL 26 20:23:46 2005 critical TFTP Failed - OUT OF ORDER packets
TUE JUL 26 19:48:33 2005 critical DHCP FAILED - Request sent, No response
TUE JUN 14 18:41:51 2005 critical REG RSP not received
SAT MAY 19 17:09:40 2007 critical Received Response to Broadcast Maintenance Request, But no Un...
SUN SEP 11 09:13:23 2005 critical Started Unicast Maintenance Ranging - No Response received - ...
SAT MAY 19 17:09:21 2007 critical SYNC Timing Synchronization failure - Loss of Sync
Time Not Established critical SYNC Timing Synchronization failure - Failed to receive MAC S...
Time Not Established critical DHCP FAILED - Discover sent, no offer received
TUE JUL 26 20:20:56 2005 critical Init RANGING Critical Ranging Request Retries exhausted
Time Not Established critical No Ranging Response received - T3 time-out
SAT MAY 19 17:10:46 2007 critical SYNC Timing Synchronization failure - Failed to acquire QAM/Q...
Time Not Established critical SYNC Timing Synchronization failure - Failed to acquire FEC f...
Here's my modems status:
Cable Modem Status operational
Cable Modem IP Address 126.96.36.199
Current Time FRI NOV 09 00:43:51 2007
Time Since Last Reset 0 days 00h:08m:14s
Configuration File d11_m_dpx2100_silverpboost_c01.cm
Cable Modem Certificate Installed
Connected to MAC Address
Ethernet Port 00:19:5b:4c:b2:62
Here's my signal:
Downstream Status Operational
Channel ID 39
Downstream Frequency 549000000 Hz
Bit Rate 42884296 bps
Power Level -1.9 dBmV
Signal to Noise Ratio 35.8 dB
Upstream Status Operational
Channel ID 2
Upstream Frequency 22000000 Hz
Bit Rate 10240000 bps
Power Level 39.25 dBmV
Basic info about my modem:
Name WebSTAR DPX2100 Series Cable Modem
Cable Modem Serial Number 101753113
Cable Modem MAC Address 00:0a:73:61:87:f1
Hardware Version 1.1
Software Version 2.0.1r1131-0304
Receive Power Level -1.9 dBmV
Transmit Power Level 39.25 dBmV
Cable Modem Status operational
Any help at all would be appreciated. I'm hoping that it's just a simple problem with my modem or cable line that Comcast will fix when I call them tomorrow.