Internet dropping. Can anyone understand this cable modem log?

[FrustratedUser]

I'am having problems with my adelphia cable coinnection. It drops every couple of minutes. Sometimes it's OK for hours. Right now it's horrible.
Does anyone understand what is happening by looking at the log?
It's a Motorola Surfboard SB3100.

050903004446 8-Debug M571.6 CM Cert Upgrade Enabled. Initiate via SNMP
050903004446 8-Debug M571.9 Missing CM Cert Upgrade TLVs.
050903004446 8-Debug M570.1 Motorola CM certificate required
050903004446 8-Debug I503.0 Cable Modem is OPERATIONAL
050903004446 7-Information B401.0 Authorized
050903004445 8-Debug F502.1 Bridge Forwarding Enabled.
050903004445 8-Debug F502.3 Bridge Learning Enabled.
050903004445 7-Information B0.0 Baseline Privacy
050903004444 7-Information X519.8 Unit Update - GGFGGD - SCD flags
050903004444 8-Debug I500.1 DOCSIS 1.0 Registration Completed
050903004444 7-Information I500.4 Attempting DOCSIS 1.0 Registration
050903004444 7-Information D509.0 Retrieved TFTP Config File SUCCESS
050903004444 7-Information D507.0 Retrieved Time....... SUCCESS
************ 7-Information D511.0 Retrieved DHCP .......... SUCCESS
************ 5-Warning D3.0 DHCP WARNING - Non-critical field invalid in response
************ 4-Error D530.8 DHCP - Invalid Log Server IP Address.
************ 5-Warning D520.2 DHCP Attempt# 1 BkOff: 5s Tot DSC:1 OFF:1 REQ:1 ACK:1
************ 7-Information D0.0 DHCP CM Net Configuration download and Time of Day
************ 7-Information T500.0 Acquired Upstream .......... SUCCESS
************ 8-Debug T503.1 Acquire US with status OK, powerLevel 51, tempSid 1965
************ 8-Debug T505.0 Acquired Upstream with status OK
************ 3-Critical R2.0 No Ranging Response received - T3 timeout
************ 7-Information T501.0 Acquired Downstream (117000000 Hz)........ SUCCESS
************ 8-Debug T509.0 Acquired DS with status OK, DS Freq 117000000, US Id 3
************ 7-Information I510.0 *** BOOTING *** SB3100-0.4.9.3-SCM00-NOSH
050903004402 7-Information H501.2 HFC: Shutting Downstream Down
050903004402 2-Alert T507.0 Received Async Error Range Failed
050903004401 3-Critical R4.0 Received Response to Broadcast Maintenance Request, but no Unicast Maint
050903004401 3-Critical H501.8 HFC: T4 Timer Expired
050903003120 8-Debug M571.6 CM Cert Upgrade Enabled. Initiate via SNMP
050903003120 8-Debug M571.9 Missing CM Cert Upgrade TLVs.
050903003120 8-Debug M570.1 Motorola CM certificate required
050903003120 8-Debug I503.0 Cable Modem is OPERATIONAL
050903003120 7-Information B401.0 Authorized
050903003119 8-Debug F502.1 Bridge Forwarding Enabled.
050903003119 8-Debug F502.3 Bridge Learning Enabled.
050903003119 7-Information B0.0 Baseline Privacy
050903003118 7-Information X519.8 Unit Update - GGFGGD - SCD flags
050903003118 8-Debug I500.1 DOCSIS 1.0 Registration Completed
050903003118 7-Information I500.4 Attempting DOCSIS 1.0 Registration
050903003118 7-Information D509.0 Retrieved TFTP Config File SUCCESS
050903003118 7-Information D507.0 Retrieved Time....... SUCCESS
************ 7-Information D511.0 Retrieved DHCP .......... SUCCESS
************ 5-Warning D3.0 DHCP WARNING - Non-critical field invalid in response
************ 4-Error D530.8 DHCP - Invalid Log Server IP Address.
************ 5-Warning D520.2 DHCP Attempt# 1 BkOff: 5s Tot DSC:1 OFF:1 REQ:1 ACK:1
************ 7-Information D0.0 DHCP CM Net Configuration download and Time of Day
************ 7-Information T500.0 Acquired Upstream .......... SUCCESS
************ 8-Debug T503.1 Acquire US with status OK, powerLevel 51, tempSid 1958
************ 8-Debug T505.0 Acquired Upstream with status OK
************ 3-Critical R2.0 No Ranging Response received - T3 timeout
************ 7-Information T501.0 Acquired Downstream (117000000 Hz)........ SUCCESS
************ 8-Debug T509.0 Acquired DS with status OK, DS Freq 117000000, US Id 3
************ 7-Information I510.0 *** BOOTING *** SB3100-0.4.9.3-SCM00-NOSH
050903003038 7-Information H501.2 HFC: Shutting Downstream Down
050903003038 2-Alert T507.0 Received Async Error Range Failed
050903003037 3-Critical R4.0 Received Response to Broadcast Maintenance Request, but no Unicast Maint
050903003037 3-Critical H501.8 HFC: T4 Timer Expired
050903002529 8-Debug M571.6 CM Cert Upgrade Enabled. Initiate via SNMP
050903002529 8-Debug M571.9 Missing CM Cert Upgrade TLVs.
050903002529 8-Debug M570.1 Motorola CM certificate required
050903002529 8-Debug I503.0 Cable Modem is OPERATIONAL
050903002529 7-Information B401.0 Authorized
050903002528 8-Debug F502.1 Bridge Forwarding Enabled.
050903002528 8-Debug F502.3 Bridge Learning Enabled.
050903002528 7-Information B0.0 Baseline Privacy
050903002527 7-Information X519.8 Unit Update - GGFGGD - SCD flags
050903002527 8-Debug I500.1 DOCSIS 1.0 Registration Completed
050903002527 7-Information I500.4 Attempting DOCSIS 1.0 Registration
050903002527 7-Information D509.0 Retrieved TFTP Config File SUCCESS
050903002527 7-Information D507.0 Retrieved Time....... SUCCESS
************ 7-Information D511.0 Retrieved DHCP .......... SUCCESS
************ 5-Warning D3.0 DHCP WARNING - Non-critical field invalid in response
************ 4-Error D530.8 DHCP - Invalid Log Server IP Address.
************ 5-Warning D520.2 DHCP Attempt# 1 BkOff: 5s Tot DSC:1 OFF:1 REQ:1 ACK:1
************ 7-Information D0.0 DHCP CM Net Configuration download and Time of Day
************ 7-Information T500.0 Acquired Upstream .......... SUCCESS
************ 8-Debug T503.1 Acquire US with status OK, powerLevel 51, tempSid 1955
************ 8-Debug T505.0 Acquired Upstream with status OK
************ 3-Critical R2.0 No Ranging Response received - T3 timeout
************ 7-Information T501.0 Acquired Downstream (117000000 Hz)........ SUCCESS
************ 8-Debug T509.0 Acquired DS with status OK, DS Freq 117000000, US Id 3
************ 7-Information I510.0 *** BOOTING *** SB3100-0.4.9.3-SCM00-NOSH
050903002450 7-Information H501.2 HFC: Shutting Downstream Down
050903002450 2-Alert T507.0 Received Async Error Range Failed
050903002449 3-Critical R4.0 Received Response to Broadcast Maintenance Request, but no Unicast Maint
050903002449 3-Critical H501.8 HFC: T4 Timer Expired
050903002236 8-Debug M571.6 CM Cert Upgrade Enabled. Initiate via SNMP
050903002236 8-Debug M571.9 Missing CM Cert Upgrade TLVs.
050903002236 8-Debug M570.1 Motorola CM certificate required
050903002236 8-Debug I503.0 Cable Modem is OPERATIONAL
050903002236 7-Information B401.0 Authorized
050903002235 8-Debug F502.1 Bridge Forwarding Enabled.
050903002235 8-Debug F502.3 Bridge Learning Enabled.
050903002235 7-Information B0.0 Baseline Privacy
050903002234 7-Information X519.8 Unit Update - GGFGGD - SCD flags
050903002234 8-Debug I500.1 DOCSIS 1.0 Registration Completed
050903002234 7-Information I500.4 Attempting DOCSIS 1.0 Registration
050903002234 7-Information D509.0 Retrieved TFTP Config File SUCCESS
050903002234 7-Information D507.0 Retrieved Time....... SUCCESS
************ 7-Information D511.0 Retrieved DHCP .......... SUCCESS
************ 5-Warning D3.0 DHCP WARNING - Non-critical field invalid in response
************ 4-Error D530.8 DHCP - Invalid Log Server IP Address.
************ 5-Warning D520.2 DHCP Attempt# 1 BkOff: 5s Tot DSC:1 OFF:1 REQ:1 ACK:1
************ 7-Information D0.0 DHCP CM Net Configuration download and Time of Day
************ 7-Information T500.0 Acquired Upstream .......... SUCCESS
************ 8-Debug T503.1 Acquire US with status OK, powerLevel 51, tempSid 1954
************ 8-Debug T505.0 Acquired Upstream with status OK
************ 3-Critical R2.0 No Ranging Response received - T3 timeout
************ 7-Information T501.0 Acquired Downstream (117000000 Hz)........ SUCCESS
************ 8-Debug T509.0 Acquired DS with status OK, DS Freq 117000000, US Id 3
************ 7-Information I510.0 *** BOOTING *** SB3100-0.4.9.3-SCM00-NOSH
050903002155 7-Information H501.2 HFC: Shutting Downstream Down
050903002155 2-Alert T507.0 Received Async Error Range Failed
050903002154 3-Critical R4.0 Received Response to Broadcast Maintenance Request, but no Unicast Maint
050903002154 3-Critical H501.8 HFC: T4 Timer Expired
050903001208 8-Debug M571.6 CM Cert Upgrade Enabled. Initiate via SNMP
050903001208 8-Debug M571.9 Missing CM Cert Upgrade TLVs.
050903001208 8-Debug M570.1 Motorola CM certificate required
050903001207 8-Debug I503.0 Cable Modem is OPERATIONAL
050903001207 7-Information B401.0 Authorized
050903001206 8-Debug F502.1 Bridge Forwarding Enabled.
050903001206 8-Debug F502.3 Bridge Learning Enabled.
050903001206 7-Information B0.0 Baseline Privacy
050903001206 7-Information X519.8 Unit Update - GGFGGD - SCD flags
050903001206 8-Debug I500.1 DOCSIS 1.0 Registration Completed
050903001206 7-Information I500.4 Attempting DOCSIS 1.0 Registration
050903001206 7-Information D509.0 Retrieved TFTP Config File SUCCESS
050903001206 7-Information D507.0 Retrieved Time....... SUCCESS
************ 7-Information D511.0 Retrieved DHCP .......... SUCCESS
************ 5-Warning D3.0 DHCP WARNING - Non-critical field invalid in response
************ 4-Error D530.8 DHCP - Invalid Log Server IP Address.
************ 5-Warning D520.2 DHCP Attempt# 1 BkOff: 5s Tot DSC:1 OFF:1 REQ:1 ACK:1
************ 7-Information D0.0 DHCP CM Net Configuration download and Time of Day
************ 7-Information T500.0 Acquired Upstream .......... SUCCESS
************ 8-Debug T503.1 Acquire US with status OK, powerLevel 51, tempSid 1951
************ 8-Debug T505.0 Acquired Upstream with status OK
************ 3-Critical R2.0 No Ranging Response received - T3 timeout
************ 7-Information T501.0 Acquired Downstream (117000000 Hz)........ SUCCESS
************ 8-Debug T509.0 Acquired DS with status OK, DS Freq 117000000, US Id 3
************ 7-Information I510.0 *** BOOTING *** SB3100-0.4.9.3-SCM00-NOSH
050903001128 7-Information H501.2 HFC: Shutting Downstream Down
050903001128 2-Alert T507.0 Received Async Error Range Failed
050903001127 3-Critical R4.0 Received Response to Broadcast Maintenance Request, but no Unicast Maint
050903001127 3-Critical H501.8 HFC: T4 Timer Expired
050902234458 8-Debug M571.6 CM Cert Upgrade Enabled. Initiate via SNMP
050902234458 8-Debug M571.9 Missing CM Cert Upgrade TLVs.
050902234458 8-Debug M570.1 Motorola CM certificate required
050902234458 8-Debug I503.0 Cable Modem is OPERATIONAL
050902234458 7-Information B401.0 Authorized
050902234457 8-Debug F502.1 Bridge Forwarding Enabled.
050902234457 8-Debug F502.3 Bridge Learning Enabled.
050902234457 7-Information B0.0 Baseline Privacy
050902234456 7-Information X519.8 Unit Update - GGFGGD - SCD flags
050902234456 8-Debug I500.1 DOCSIS 1.0 Registration Completed
050902234456 7-Information I500.4 Attempting DOCSIS 1.0 Registration
050902234456 7-Information D509.0 Retrieved TFTP Config File SUCCESS
050902234456 7-Information D507.0 Retrieved Time....... SUCCESS
************ 7-Information D511.0 Retrieved DHCP .......... SUCCESS
************ 5-Warning D3.0 DHCP WARNING - Non-critical field invalid in response
************ 4-Error D530.8 DHCP - Invalid Log Server IP Address.
************ 5-Warning D520.2 DHCP Attempt# 1 BkOff: 5s Tot DSC:1 OFF:1 REQ:1 ACK:1
************ 7-Information D0.0 DHCP CM Net Configuration download and Time of Day
************ 7-Information T500.0 Acquired Upstream .......... SUCCESS
************ 8-Debug T503.1 Acquire US with status OK, powerLevel 51, tempSid 1937
************ 8-Debug T505.0 Acquired Upstream with status OK
************ 3-Critical R2.0 No Ranging Response received - T3 timeout
************ 7-Information T501.0 Acquired Downstream (117000000 Hz)........ SUCCESS
************ 8-Debug T509.0 Acquired DS with status OK, DS Freq 117000000, US Id 3
************ 7-Information I510.0 *** BOOTING *** SB3100-0.4.9.3-SCM00-NOSH
050902234419 7-Information H501.2 HFC: Shutting Downstream Down
050902234419 2-Alert T507.0 Received Async Error Range Failed
050902234418 3-Critical R4.0 Received Response to Broadcast Maintenance Request, but no Unicast Maint

 

[FrustratedUser]

Packet loss check from DSLreports.com

http://www.broadbandreports.com/quality/nil/1836782

 

[FrustratedUser]

I guess the networking forums don't get too much traffic.


Thanks anyway.

 

[JackMDS]

People have different approaches to how to deal with trouble.

Mine is to take into consideration what are the options in case I do find what the trouble is, and thus avoiding solutions that would lead to None Functional Outcome.

Assuming that your computer is connected directly to the Modem, if your Authentication method is configured correctly, then it is an issue with the Modem per-se or the connection with the ISP.

Since you do not have the manufacturer bench simulator to repair the Modem, and you are not going to pay $75 hour (or more) for technical work to repair a less then $50 unit.

Your option is.

1. Call the ISP.

2. Borrow/buy/get another Modem and see if it makes a difference.

:sun:

 

[FrustratedUser]

Thank you.

Did some research and found that some of the error codes indicates a problem with the downstream itself. I am calling the ISP.

 

[Thoreau]

If you've added any splitters or modified *any* line in your house that runs over coax, try reversing those changes or even removing other devices from the line. TV's, cable boxes, etc. so that only the cable modem is tied into the coax lines in your home. If that makes any difference, your ISP likely has low signal levels and needs to do something on their end.

 

[FrustratedUser]

Signal levels are fine on my lines. No changes done since I got cable last year. it all started 3 weeks ago.