Drakka's profile

New Contributor

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3 Messages

Closed

Internet keep dropping connection

For the pass few days my internet keep dropping connection. My modem reset, stuck blinking on Send, then reset and back to blinking on Send.

I'm not sure if the power cycle is what eventually got my connection up or the waiting but here is my modem information. Thanks

Model Name: SB5120

Modem Name: Motorola

Serial Number: 122103433415614800000000

Software Version: SB5120-2.19.0.16-SCM00-NOSH
Hardware Version: 1
MIB Version: II
GUI Version: 1.0
VxWorks Version: 5.4

Configuration

Frequency Plan:

North American Standard/HRC/IRC

Upstream Channel ID:

2

Favorite Frequency (Hz):

855000000

Downstream

Value

Frequency

855000000 Hz 

Signal to Noise Ratio

38 dB 

QAM

QAM256

Network Access Control Object

OFF

Power Level

1 dBmV  

The Downstream Power Level reading is a snapshot taken at the time this page was requested. Please Reload/Refresh this Page for a new reading

Upstream

Value

Channel ID

3

Frequency

32000000 Hz

Ranging Service ID

2683

Symbol Rate

5.120 Msym/s

Power Level

54 dBmV

Time

Priority

Code

Message

1970-01-01 00:01:30

3-Critical

R02.0

No Ranging Response received - T3 time-out

1970-01-01 00:01:19

5-Warning

SYNC: US Gain in cache is invalid: 0.00

1970-01-01 00:01:17

7-Information

Starting Ranging On Channel 1

1970-01-01 00:01:09

3-Critical

R02.0

No Ranging Response received - T3 time-out

1970-01-01 00:01:01

5-Warning

SYNC: US Gain in cache is invalid: 54.10

1970-01-01 00:01:00

7-Information

Starting Ranging On Channel 4

1970-01-01 00:00:41

3-Critical

R02.0

No Ranging Response received - T3 time-out

1970-01-01 00:00:37

5-Warning

SYNC: US Gain in cache is invalid: 54.30

1970-01-01 00:00:36

7-Information

Starting Ranging On Channel 2

1970-01-01 00:00:32

7-Information

Downstream Locked - Collecting Upstream Information

1970-01-01 00:00:29

7-Information

Scanning frequency 855000000Hz

1970-01-01 00:00:01

7-Information

Trying to synchronize ...

1970-01-01 00:00:01

7-Information

Vendor Cold Start

2013-07-24 18:37:04

7-Information

Scanning frequency 829791000Hz

2013-07-24 18:36:22

3-Critical

T01.0

SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing

2013-07-24 18:36:22

7-Information

Scanning frequency 855000000Hz

2013-07-24 18:36:22

3-Critical

T04.0

SYNC Timing Synchronization failure - Failed to receive MAC SYNC frame within time-out period

2013-07-24 18:36:22

4-Error

SYNC: Hardware didn't detect SYNC msg for 600ms during Initial Ranging

2013-07-24 18:36:13

3-Critical

R02.0

No Ranging Response received - T3 time-out

2013-07-24 18:36:05

5-Warning

SYNC: US Gain in cache is invalid: 0.00

Event Log has reached maximum size. Older log entries are lost.

Valued Contributor

 • 

755 Messages

The upstream signal levels are barely in range based on your log, and the Sync errors are tied to it on restarting trying to get send solid with the modem. Is there any kind of splitter or amplifier on the coaxial line you are aware of there?

New Contributor

 • 

3 Messages

I don't have any kind of splitter or amplifier on the coaxial line. My connection comes straight from the wall to my modem.

For the past 48 hours my internet connection seems to be doing fine. I have not had any drop connection since I posted my modem log.

I will come back and post here if I run into the same issue.

Thank you for you help Ed H.

New Contributor

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3 Messages

I didn't think I would have to come back to post again. I thought that was the last of it and I would sit back and enjoy my internet but alas I am here.  

Below is the internet disconnect log for today. I attempt to capture the sequence that led to the disconnect back to recovery then back to the disconnect and etc in hopes that the information will led to  finding the root cause.

Internet Drop



 

Downstream

Value

Frequency

849000000 Hz 

Signal to Noise Ratio

37 dB 

QAM

QAM256

Network Access Control Object

OFF

Power Level

1 dBmV  

The Downstream Power Level reading is a snapshot taken at the time this page was requested. Please Reload/Refresh this Page for a new reading

Upstream

Value

Channel ID

4

Frequency

25400000 Hz

Ranging Service ID

2683

Symbol Rate

5.120 Msym/s

Power Level

54 dBmV

Time

Priority

Code

Message

2013-07-30 18:44:25

3-Critical

R02.0

No Ranging Response received - T3 time-out

2013-07-30 18:44:22

5-Warning

SYNC: US Gain in cache is invalid: 0.00

2013-07-30 18:44:20

7-Information

Starting Ranging On Channel 4

2013-07-30 18:44:16

7-Information

Downstream Locked - Collecting Upstream Information

2013-07-30 18:44:13

7-Information

Scanning frequency 837000000Hz

2013-07-30 18:43:44

3-Critical

T04.0

SYNC Timing Synchronization failure - Failed to receive MAC SYNC frame within time-out period

2013-07-30 18:43:44

4-Error

SYNC: Hardware didn't detect SYNC msg for 600ms during Initial Ranging

2013-07-30 18:43:44

7-Information

Scanning frequency 133756000Hz

2013-07-30 18:43:44

3-Critical

T01.0

SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing

2013-07-30 18:43:44

7-Information

Scanning frequency 145757000Hz

2013-07-30 18:43:44

3-Critical

U02.0

UCD invalid or channel unusable

2013-07-30 18:43:24

7-Information

Starting Ranging On Channel 1

2013-07-30 18:43:11

3-Critical

R02.0

No Ranging Response received - T3 time-out

2013-07-30 18:43:04

5-Warning

SYNC: US Gain in cache is invalid: 54.10

2013-07-30 18:43:03

7-Information

Starting Ranging On Channel 4

2013-07-30 18:42:53

3-Critical

R02.0

No Ranging Response received - T3 time-out

2013-07-30 18:42:36

5-Warning

SYNC: US Gain in cache is invalid: 0.00

2013-07-30 18:42:35

7-Information

Starting Ranging On Channel 3

2013-07-30 18:42:10

3-Critical

R02.0

No Ranging Response received - T3 time-out

2013-07-30 18:42:06

5-Warning

SYNC: US Gain in cache is invalid: 54.30

Event Log has reached maximum size. Older log entries are lost.

Internet Came Back

Downstream

Value

Frequency

837000000 Hz 

Signal to Noise Ratio

37 dB 

QAM

QAM256

Network Access Control Object

ON

Power Level

0 dBmV  

The Downstream Power Level reading is a snapshot taken at the time this page was requested. Please Reload/Refresh this Page for a new reading

Upstream

Value

Channel ID

4

Frequency

25400000 Hz

Ranging Service ID

2683

Symbol Rate

5.120 Msym/s

Power Level

53 dBmV

Time

Priority

Code

Message

2013-07-30 18:44:53

7-Information

DS multicast is not mapped to SAID

2013-07-30 18:44:53

7-Information

B605.10

Map Reject - Downstream Traffic Flow Not Mapped to BPI+ SAID

2013-07-30 18:44:53

7-Information

B601.0

SA Map State Machine Started

2013-07-30 18:44:50

7-Information

DS multicast is not mapped to SAID

2013-07-30 18:44:50

7-Information

B605.10

Map Reject - Downstream Traffic Flow Not Mapped to BPI+ SAID

2013-07-30 18:44:50

7-Information

B601.0

SA Map State Machine Started

2013-07-30 18:44:48

7-Information

SNMP: Working in SNMP V1/2c Only NmAccess mode

2013-07-30 18:44:48

7-Information

DS multicast is not mapped to SAID

2013-07-30 18:44:48

7-Information

B605.10

Map Reject - Downstream Traffic Flow Not Mapped to BPI+ SAID

2013-07-30 18:44:48

7-Information

B601.0

SA Map State Machine Started

2013-07-30 18:44:46

7-Information

INITIALIZATION COMPLETE - MODEM IS OPERATIONAL

2013-07-30 18:44:46

7-Information

B401.0

Authorized

2013-07-30 18:44:46

6-Notice

I401.0

TLV-11 - unrecognized OID

2013-07-30 18:44:46

7-Information

SEC: Co-Signer CVC from configuration file was verified

2013-07-30 18:44:46

7-Information

REGISTRATION COMPLETE - Waiting for Operational status

2013-07-30 18:44:45

7-Information

REG: Capability type <15> isn't supported by CMTS

2013-07-30 18:44:45

7-Information

Registration file - downloaded

2013-07-30 18:44:44

7-Information

Trying to download Configuration file ...

2013-07-30 18:44:44

7-Information

Time of day - retrieved

2013-07-30 18:44:43

7-Information

DHCP - parameters acquired

Down then recover

Downstream

Value

Frequency

855000000 Hz 

Signal to Noise Ratio

38 dB 

QAM

QAM256

Network Access Control Object

OFF

Power Level

1 dBmV  

The Downstream Power Level reading is a snapshot taken at the time this page was requested. Please Reload/Refresh this Page for a new reading

Upstream

Value

Channel ID

3

Frequency

32000000 Hz

Ranging Service ID

2683

Symbol Rate

5.120 Msym/s

Power Level

54 dBmV

Time

Priority

Code

Message

2013-07-31 19:05:26

7-Information

Registration file - downloaded

2013-07-31 19:05:25

7-Information

Trying to download Configuration file ...

2013-07-31 19:05:25

7-Information

Time of day - retrieved

2013-07-31 19:05:24

7-Information

DHCP - parameters acquired

2013-07-31 19:05:24

7-Information

DHCP: ACK: Setting (*) CM TFTP Boot file: 150001_vm2.0_d.cfg

2013-07-31 19:05:24

7-Information

DHCP: Setting CM IP address to: 10.10.194.222

2013-07-31 19:05:20

7-Information

DHCP: Setting (*) CM Syslog Server address to: 10.254.254.254

2013-07-31 19:05:20

7-Information

DHCP: Setting (*) CM Time Server address to: 172.19.65.31

2013-07-31 19:05:20

7-Information

DHCP: Setting (*) CM Subnet mask to: 255.255.248.0

2013-07-31 19:05:20

7-Information

DHCP: Setting (*) CM Gateway address to: 10.10.192.1

2013-07-31 19:05:20

7-Information

DHCP: OFFER: Setting (*) CM TFTP Boot file: 150001_vm2.0_d.cfg

2013-07-31 19:05:20

7-Information

DHCP select: Setting (*) CM TFTP Server address to: 172.23.1.90

2013-07-31 19:05:20

7-Information

DHCP: Offered (*) CM IP address to: 10.10.194.222

2013-07-31 19:05:16

7-Information

Trying to register through CMTS...

2013-07-31 19:05:16

7-Information

SYNCHRONIZED - 855000000 Hz , ucd 4

2013-07-31 19:05:12

3-Critical

R02.0

No Ranging Response received - T3 time-out

2013-07-31 19:05:02

5-Warning

SYNC: US Gain in cache is invalid: 54.10

2013-07-31 19:05:01

7-Information

Starting Ranging On Channel 4

2013-07-31 19:04:57

7-Information

Downstream Locked - Collecting Upstream Information

2013-07-31 19:04:55

7-Information

Scanning frequency 855000000Hz

Event Log has reached maximum size. Older log entries are lost.

Time

Priority

Code

Message

2013-07-31 19:24:55

7-Information

Starting Ranging On Channel 3

2013-07-31 19:24:43

3-Critical

R02.0

No Ranging Response received - T3 time-out

2013-07-31 19:24:24

5-Warning

SYNC: US Gain in cache is invalid: 54.10

2013-07-31 19:24:24

7-Information

Starting Ranging On Channel 4

2013-07-31 19:24:20

7-Information

Downstream Locked - Collecting Upstream Information

2013-07-31 19:24:17

7-Information

Scanning frequency 855000000Hz

2013-07-31 19:24:04

3-Critical

T04.0

SYNC Timing Synchronization failure - Failed to receive MAC SYNC frame within time-out period

2013-07-31 19:24:04

4-Error

SYNC: Hardware didn't detect SYNC msg for 600ms during Initial Ranging

2013-07-31 19:24:04

7-Information

Scanning frequency 103754000Hz

2013-07-31 19:24:03

3-Critical

T01.0

SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing

2013-07-31 19:24:03

7-Information

Scanning frequency 91754000Hz

2013-07-31 19:24:03

3-Critical

U02.0

UCD invalid or channel unusable

2013-07-31 19:23:55

7-Information

Starting Ranging On Channel 3

2013-07-31 19:23:35

3-Critical

R02.0

No Ranging Response received - T3 time-out

2013-07-31 19:23:22

5-Warning

SYNC: US Gain in cache is invalid: 0.00

2013-07-31 19:23:22

7-Information

Starting Ranging On Channel 2

2013-07-31 19:22:45

3-Critical

R02.0

No Ranging Response received - T3 time-out

2013-07-31 19:22:36

5-Warning

SYNC: US Gain in cache is invalid: 54.10

2013-07-31 19:22:35

7-Information

Starting Ranging On Channel 4

2013-07-31 19:22:31

7-Information

Downstream Locked - Collecting Upstream Information

Event Log has reached maximum size. Older log entries are lost.

Time

Priority

Code

Message

2013-07-31 19:25:28

3-Critical

R02.0

No Ranging Response received - T3 time-out

2013-07-31 19:25:26

5-Warning

SYNC: US Gain in cache is invalid: 0.00

2013-07-31 19:25:25

7-Information

Starting Ranging On Channel 2

2013-07-31 19:24:43

3-Critical

R02.0

No Ranging Response received - T3 time-out

2013-07-31 19:24:24

5-Warning

SYNC: US Gain in cache is invalid: 54.10

2013-07-31 19:24:24

7-Information

Starting Ranging On Channel 4

2013-07-31 19:24:20

7-Information

Downstream Locked - Collecting Upstream Information

2013-07-31 19:24:17

7-Information

Scanning frequency 855000000Hz

2013-07-31 19:24:04

3-Critical

T04.0

SYNC Timing Synchronization failure - Failed to receive MAC SYNC frame within time-out period

2013-07-31 19:24:04

4-Error

SYNC: Hardware didn't detect SYNC msg for 600ms during Initial Ranging

2013-07-31 19:24:04

7-Information

Scanning frequency 103754000Hz

2013-07-31 19:24:03

3-Critical

T01.0

SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing

2013-07-31 19:24:03

7-Information

Scanning frequency 91754000Hz

2013-07-31 19:24:03

3-Critical

U02.0

UCD invalid or channel unusable

2013-07-31 19:23:55

7-Information

Starting Ranging On Channel 3

2013-07-31 19:23:35

3-Critical

R02.0

No Ranging Response received - T3 time-out

2013-07-31 19:23:22

5-Warning

SYNC: US Gain in cache is invalid: 0.00

2013-07-31 19:23:22

7-Information

Starting Ranging On Channel 2

2013-07-31 19:22:45

3-Critical

R02.0

No Ranging Response received - T3 time-out

2013-07-31 19:22:36

5-Warning

SYNC: US Gain in cache is invalid: 54.10

Event Log has reached maximum size. Older log entries are lost.

Downstream

Value

Frequency

855000000 Hz 

Signal to Noise Ratio

37 dB 

QAM

QAM256

Network Access Control Object

ON

Power Level

1 dBmV  

The Downstream Power Level reading is a snapshot taken at the time this page was requested. Please Reload/Refresh this Page for a new reading

Upstream

Value

Channel ID

2

Frequency

37000000 Hz

Ranging Service ID

2683

Symbol Rate

2.560 Msym/s

Power Level

54 dBmV

Time

Priority

Code

Message

2013-07-31 19:25:58

4-Error

IGMP: ERROR - Group address 0.0.0.1 is not a legal multicast

2013-07-31 19:25:51

7-Information

SNMP: Working in SNMP V1/2c Only NmAccess mode

2013-07-31 19:25:51

4-Error

IGMP: ERROR - Group address 0.0.0.1 is not a legal multicast

2013-07-31 19:25:50

7-Information

INITIALIZATION COMPLETE - MODEM IS OPERATIONAL

2013-07-31 19:25:50

7-Information

B401.0

Authorized

2013-07-31 19:25:49

6-Notice

I401.0

TLV-11 - unrecognized OID

2013-07-31 19:25:49

7-Information

SEC: Co-Signer CVC from configuration file was verified

2013-07-31 19:25:49

7-Information

REGISTRATION COMPLETE - Waiting for Operational status

2013-07-31 19:25:48

7-Information

REG: Capability type <15> isn't supported by CMTS

2013-07-31 19:25:48

7-Information

Registration file - downloaded

2013-07-31 19:25:47

7-Information

Trying to download Configuration file ...

2013-07-31 19:25:47

7-Information

Time of day - retrieved

2013-07-31 19:25:47

7-Information

DHCP - parameters acquired

2013-07-31 19:25:47

7-Information

DHCP: ACK: Setting (*) CM TFTP Boot file: 150001_vm2.0_d.cfg

2013-07-31 19:25:47

7-Information

DHCP: Setting CM IP address to: 10.10.194.222

2013-07-31 19:25:43

7-Information

DHCP: Setting (*) CM Syslog Server address to: 10.254.254.254

2013-07-31 19:25:43

7-Information

DHCP: Setting (*) CM Time Server address to: 172.19.65.31

2013-07-31 19:25:43

7-Information

DHCP: Setting (*) CM Subnet mask to: 255.255.248.0

2013-07-31 19:25:43

7-Information

DHCP: Setting (*) CM Gateway address to: 10.10.192.1

2013-07-31 19:25:43

7-Information

DHCP: OFFER: Setting (*) CM TFTP Boot file: 150001_vm2.0_d.cfg

Event Log has reached maximum size. Older log entries are lost.

Internet Back up

Priority

Code

Message

2013-07-31 19:25:58

4-Error

IGMP: ERROR - Group address 0.0.0.1 is not a legal multicast

2013-07-31 19:25:51

7-Information

SNMP: Working in SNMP V1/2c Only NmAccess mode

2013-07-31 19:25:51

4-Error

IGMP: ERROR - Group address 0.0.0.1 is not a legal multicast

2013-07-31 19:25:50

7-Information

INITIALIZATION COMPLETE - MODEM IS OPERATIONAL

2013-07-31 19:25:50

7-Information

B401.0

Authorized

2013-07-31 19:25:49

6-Notice

I401.0

TLV-11 - unrecognized OID

2013-07-31 19:25:49

7-Information

SEC: Co-Signer CVC from configuration file was verified

2013-07-31 19:25:49

7-Information

REGISTRATION COMPLETE - Waiting for Operational status

2013-07-31 19:25:48

7-Information

REG: Capability type <15> isn't supported by CMTS

2013-07-31 19:25:48

7-Information

Registration file - downloaded

2013-07-31 19:25:47

7-Information

Trying to download Configuration file ...

2013-07-31 19:25:47

7-Information

Time of day - retrieved

2013-07-31 19:25:47

7-Information

DHCP - parameters acquired

2013-07-31 19:25:47

7-Information

DHCP: ACK: Setting (*) CM TFTP Boot file: 150001_vm2.0_d.cfg

2013-07-31 19:25:47

7-Information

DHCP: Setting CM IP address to: 10.10.194.222

2013-07-31 19:25:43

7-Information

DHCP: Setting (*) CM Syslog Server address to: 10.254.254.254

2013-07-31 19:25:43

7-Information

DHCP: Setting (*) CM Time Server address to: 172.19.65.31

2013-07-31 19:25:43

7-Information

DHCP: Setting (*) CM Subnet mask to: 255.255.248.0

2013-07-31 19:25:43

7-Information

DHCP: Setting (*) CM Gateway address to: 10.10.192.1

2013-07-31 19:25:43

7-Information

DHCP: OFFER: Setting (*) CM TFTP Boot file: 150001_vm2.0_d.cfg

Event Log has reached maximum size. Older log entries are lost.

Former Moderator

 • 

606 Messages

Based on what we see from here, the return signal level is hitting its max and the modem is resetting, so it appears to be a return path problem of some kind. It can really be anywhere from the modem itself all the way back to the tap. If there are no splitters or amplifiers that you know of or can access, the next step is to place a service call.

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