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Modem rebooting


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#1 debodun

debodun

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Posted 14 November 2014 - 10:46 AM

I have a Motorola SB5101 modem (without router). The last three days, some time after I turn on my computer, it Modem goes offline and I lose Internet access. It reboots itself, but when the blinking light gets to ONLINE, it blinks for about 30 seconds, then starts to reboot itself again. The second attempt is okay and Internet access is restored. Today this happened twice. Is this more likely to be a problem with my computer, the modem or my ISP?

 

I ran a few scans. Here is the signal report:

 

Downstream Value Frequency 561000000

Hz Signal To Noise Ratio 36.6 dB

Power Level -4.0 dBmV

Upstream Value Channel ID 2 Frequency 24200000 Hz

Power 33.2 dBmV

 

And the event log:

Time Priority Description

2014-11-14 10:43:02 5-Warning DHCP WARNING - Non-critical field invalid in response;CM-MAC=00:18:c0:b1:a6:fa;

2014-11-14 10:42:44 6-Notice Max T6 No Reg Rsp Timeouts - Reinitialize MAC...

2014-11-14 10:42:44 3-Critical REG RSP not received

1970-01-01 00:00:22 5-Warning ToD request sent - No Response received

1970-01-01 00:00:20 5-Warning DHCP WARNING - Non-critical field invalid in response;CM-MAC=00:18:c0:b1:a6:fa;

1970-01-01 00:00:08 6-Notice Ethernet link up - ready to pass packets

2014-11-14 06:56:58 5-Warning DHCP WARNING - Non-critical field invalid in response;CM-MAC=00:18:c0:b1:a6:fa;

2014-11-14 06:56:42 6-Notice Max T6 No Reg Rsp Timeouts - Reinitialize MAC...

2014-11-14 06:56:41 3-Critical REG RSP not received

1970-01-01 00:00:20 5-Warning DHCP WARNING - Non-critical field invalid in response;CM-MAC=00:18:c0:b1:a6:fa;

1970-01-01 00:00:12 3-Critical No Ranging Response received - T3 time-out (US 2)

1970-01-01 00:00:08 6-Notice Ethernet link up - ready to pass packets

2014-11-13 07:57:29 5-Warning DHCP WARNING - Non-critical field invalid in response;CM-MAC=00:18:c0:b1:a6:fa;

2014-11-13 07:57:16 6-Notice Max T6 No Reg Rsp Timeouts - Reinitialize MAC...

2014-11-13 07:57:15 3-Critical REG RSP not received

1970-01-01 00:00:23 5-Warning DHCP WARNING - Non-critical field invalid in response;CM-MAC=00:18:c0:b1:a6:fa;

1970-01-01 00:00:15 3-Critical No Ranging Response received - T3 time-out (US 2)

1970-01-01 00:00:08 6-Notice Ethernet link up - ready to pass packets

2014-11-12 11:42:58 5-Warning DHCP WARNING - Non-critical field invalid in response;CM-MAC=00:18:c0:b1:a6:fa;

2014-11-12 11:42:52 3-Critical Started Unicast Maintenance Ranging - No Response received - T3 time-out 2014-11-12 11:42:41 6-Notice Max T6 No Reg Rsp Timeouts - Reinitialize MAC...

2014-11-12 11:42:40 3-Critical REG RSP not received

1970-01-01 00:00:19 5-Warning DHCP WARNING - Non-critical field invalid in response;CM-MAC=00:18:c0:b1:a6:fa; 1970-01-01 00:00:08 6-Notice Ethernet link up - ready to pass packets

2014-11-12 11:41:44 6-Notice Modem Is Shutting Down and Rebooting...

2014-11-12 11:41:43 3-Critical Received Response to Broadcast Maintenance Request, But no Unicast Maintenance o

2014-11-12 11:41:10 3-Critical Started Unicast Maintenance Ranging - No Response received - T3 time-out 2014-11-12 06:44:11 6-Notice Ethernet link up - ready to pass packets

2014-11-12 06:44:09 6-Notice Ethernet link down - not ready to pass packets

2014-11-12 06:20:39 6-Notice Ethernet link up - ready to pass packets

2014-11-12 06:20:37 6-Notice Ethernet link down - not ready to pass packets

2014-11-11 17:39:20 3-Critical Started Unicast Maintenance Ranging - No Response received - T3 time-out 2014-11-11 11:06:58 5-Warning DHCP WARNING - Non-critical field invalid in response;CM-MAC=00:18:c0:b1:a6:fa;

2014-11-11 11:06:42 6-Notice Max T6 No Reg Rsp Timeouts - Reinitialize MAC...

2014-11-11 11:06:41 3-Critical REG RSP not received

1970-01-01 00:00:26 5-Warning DHCP WARNING - Non-critical field invalid in response;CM-MAC=00:18:c0:b1:a6:fa;

1970-01-01 00:00:16 3-Critical No Ranging Response received - T3 time-out (US 2)

1970-01-01 00:00:08 6-Notice Ethernet link up - ready to pass packets

2014-11-02 19:33:41 5-Warning DHCP WARNING - Non-critical field invalid in response;CM-MAC=00:18:c0:b1:a6:fa;

2014-11-02 19:33:23 6-Notice Max T6 No Reg Rsp Timeouts - Reinitialize MAC...

2014-11-02 19:33:22 3-Critical REG RSP not received

1970-01-01 00:00:21 5-Warning DHCP WARNING - Non-critical field invalid in response;CM-MAC=00:18:c0:b1:a6:fa;

1970-01-01 00:00:08 6-Notice Ethernet link up - ready to pass packets

2014-10-29 06:08:14 5-Warning DHCP WARNING - Non-critical field invalid in response;CM-MAC=00:18:c0:b1:a6:fa;

2014-10-29 06:08:00 6-Notice Max T6 No Reg Rsp Timeouts - Reinitialize MAC...

2014-10-29 06:07:59 3-Critical REG RSP not received

1970-01-01 00:00:22 5-Warning DHCP WARNING - Non-critical field invalid in response;CM-MAC=00:18:c0:b1:a6:fa;

1970-01-01 00:00:14 3-Critical No Ranging Response received - T3 time-out (US 2)

1970-01-01 00:00:08 6-Notice Ethernet link up - ready to pass packets

2014-10-21 02:00:14 5-Warning DHCP WARNING - Non-critical field invalid in response;CM-MAC=00:18:c0:b1:a6:fa;

1970-01-01 00:02:00 5-Warning ToD request sent - No Response received

1970-01-01 00:02:00 6-Notice Tftp Init Failed - Reinitialize MAC...

1970-01-01 00:02:00 3-Critical TFTP failed - Request sent - No Response

1970-01-01 00:00:24 5-Warning ToD request sent - No Response received

1970-01-01 00:00:19 5-Warning DHCP WARNING - Non-critical field invalid in response;CM-MAC=00:18:c0:b1:a6:fa;

1970-01-01 00:00:08 6-Notice Ethernet link up - ready to pass packets

2014-10-21 00:54:52 5-Warning DHCP WARNING - Non-critical field invalid in response;CM-MAC=00:18:c0:b1:a6:fa;

2014-10-21 00:54:43 3-Critical No Ranging Response received - T3 time-out (US 2)

2014-10-21 00:54:36 6-Notice Max T6 No Reg Rsp Timeouts - Reinitialize MAC...

2014-10-21 00:54:36 3-Critical REG RSP not received

1970-01-01 00:00:19 5-Warning DHCP WARNING - Non-critical field invalid in response;CM-MAC=00:18:c0:b1:a6:fa;

1970-01-01 00:00:08 6-Notice Ethernet link up - ready to pass packets

2014-10-21 00:53:39 6-Notice SW download Successful - Via NMS

2014-10-21 00:52:51 6-Notice SW Download INIT - Via NMS

2014-10-20 15:31:39 6-Notice Ethernet link up - ready to pass packets

2014-10-20 15:31:37 6-Notice Ethernet link down - not ready to pass packets

2014-10-20 12:54:57 6-Notice Ethernet link up - ready to pass packets

2014-10-20 12:54:55 6-Notice Ethernet link down - not ready to pass packets

2014-10-19 15:48:00 6-Notice Ethernet link up - ready to pass packets

2014-10-19 15:47:58 6-Notice Ethernet link down - not ready to pass packets

1970-01-01 00:00:21 5-Warning DHCP WARNING - Non-critical field invalid in response;CM-MAC=00:18:c0:b1:a6:fa;

1970-01-01 00:00:08 6-Notice Ethernet link up - ready to pass packets

1970-01-01 00:00:19 5-Warning DHCP WARNING - Non-critical field invalid in response;CM-MAC=00:18:c0:b1:a6:fa;

1970-01-01 00:00:08 6-Notice Ethernet link up - ready to pass packets

1970-01-01 00:00:20 5-Warning DHCP WARNING - Non-critical field invalid in response;CM-MAC=00:18:c0:b1:a6:fa;

1970-01-01 00:00:08 6-Notice Ethernet link up - ready to pass packets

1970-01-01 00:00:21 5-Warning DHCP WARNING - Non-critical field invalid in response;CM-MAC=00:18:c0:b1:a6:fa;

1970-01-01 00:00:08 6-Notice Ethernet link up - ready to pass packets

2014-10-19 10:13:28 6-Notice Ethernet link down - not ready to pass packets

2014-10-18 23:13:56 4-Error DHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=00:18:c0:b1:a6:f

2014-10-18 17:27:30 3-Critical Started Unicast Maintenance Ranging - No Response received - T3 time-out 2014-10-18 11:56:46 6-Notice Ethernet link up - ready to pass packets

2014-10-18 11:56:44 6-Notice Ethernet link down - not ready to pass packets

2014-10-18 05:20:04 6-Notice Ethernet link up - ready to pass packets

2014-10-18 05:20:02 6-Notice Ethernet link down - not ready to pass packets

2014-10-18 02:05:09 3-Critical Started Unicast Maintenance Ranging - No Response received - T3 time-out 2014-10-17 10:51:18 6-Notice Ethernet link up - ready to pass packets

2014-10-17 10:51:16 6-Notice Ethernet link down - not ready to pass packets

2014-10-17 05:00:22 6-Notice Ethernet link up - ready to pass packets

2014-10-17 05:00:20 6-Notice Ethernet link down - not ready to pass packets

2014-10-16 23:45:53 3-Critical Started Unicast Maintenance Ranging - No Response received - T3 time-out 2014-10-16 13:35:34 6-Notice Ethernet link up - ready to pass packets

2014-10-16 13:35:32 6-Notice Ethernet link down - not ready to pass packets

2014-10-16 05:51:40 6-Notice Ethernet link up - ready to pass packets

2014-10-16 05:51:38 6-Notice Ethernet link down - not ready to pass packets

2014-10-16 05:38:10 6-Notice Ethernet link up - ready to pass packets

2014-10-16 05:38:08 6-Notice Ethernet link down - not ready to pass packets

1970-01-01 00:00:19 5-Warning DHCP WARNING - Non-critical field invalid in response;CM-MAC=00:18:c0:b1:a6:fa;

1970-01-01 00:00:08 6-Notice Ethernet link up - ready to pass packets

2014-10-10 04:07:44 6-Notice Ethernet link down - not ready to pass packets


Edited by debodun, 14 November 2014 - 10:58 AM.


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#2 bludshot

bludshot

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Posted 14 November 2014 - 08:22 PM

My guesses:

 

This should not be a problem with your computer.

 

It is probably the modem or the upstream cable wiring going to the modem (if it has been split too much before the modem or the signal strength is lousy). Ideally get the ISP to check the wiring going to the modem and test signal strength, and replace the modem+router combo (because imo those suck) with a normal modem and then buy your own router. Your internal network is none of your ISP's business...






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