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cbubs
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Monday, October 5th, 2020

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Getting Started Unicast Maintenance Ranging - No Response received - T3 time-out every day

Hello,

 

My connection is having unexpected modem timeout everyday, cause internet interups and most of time recover itself after several miniues. See the logs  below (I have removed mac addresses). I am using a new Motorola 24x8 Cable Modem, Model MB7621 with DOCSIS 3.0, purchased last month. 

 

Any one can help take a look at this? Thanks!

 

 Log

 cbubs_0-1601917221314.jpeg

 

 

 cbubs_1-1601917221316.jpeg

 


  

 Time 

 Priority 

 Description 

 Thu Sep 17 10:17:57 2020  

 Critical (3) 

 Unicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=xx:xx:xx:xx:xx:f8;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0; 

 Thu Sep 17 10:17:57 2020  

 Critical (3) 

 16 consecutive T3 timeouts while trying to range on upstream channel 2;CM-MAC=xx:xx:xx:xx:xx:f8;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0; 

 Thu Sep 17 10:18:18 2020  

 Critical (3) 

 Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=xx:xx:xx:xx:xx:f8;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0; 

 Thu Sep 17 10:18:18 2020  

 Critical (3) 

 Unicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=xx:xx:xx:xx:xx:f8;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0; 

 Thu Sep 17 10:18:18 2020  

 Critical (3) 

 16 consecutive T3 timeouts while trying to range on upstream channel 1;CM-MAC=xx:xx:xx:xx:xx:f8;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0; 

 Thu Sep 17 19:08:04 2020  

 Critical (3) 

 Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=xx:xx:xx:xx:xx:f8;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0; 

 Thu Sep 17 19:08:04 2020  

 Critical (3) 

 Unicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=xx:xx:xx:xx:xx:f8;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0; 

 Thu Sep 17 19:08:04 2020  

 Critical (3) 

 16 consecutive T3 timeouts while trying to range on upstream channel 2;CM-MAC=xx:xx:xx:xx:xx:f8;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0; 

 Fri Sep 25 01:28:36 2020  

 Critical (3) 

 Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=xx:xx:xx:xx:xx:f8;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0; 

 Fri Sep 25 07:08:31 2020  

 Warning (5) 

 TEK Invalid - Invalid Key Sequence Number;CM-MAC=xx:xx:xx:xx:xx:f8;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0; 

 Sat Sep 26 08:10:56 2020  

 Critical (3) 

 Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=xx:xx:xx:xx:xx:f8;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0; 

 Sat Sep 26 08:15:16 2020  

 Critical (3) 

 Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=xx:xx:xx:xx:xx:f8;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0; 

 Sat Sep 26 08:15:29 2020  

 Critical (3) 

 No Ranging Response received - T3 time-out;CM-MAC=xx:xx:xx:xx:xx:f8;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.0;CM-VER=3.0; 

 Sat Sep 26 08:15:42 2020  

 Critical (3) 

 Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=xx:xx:xx:xx:xx:f8;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.0;CM-VER=3.0; 

 Sat Sep 26 08:15:49 2020  

 Notice (6) 

 Honoring MDD; IP provisioning mode = IPv6 

 Sat Sep 26 09:00:41 2020  

 Critical (3) 

 Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=xx:xx:xx:xx:xx:f8;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0; 

 Sat Sep 26 09:00:41 2020  

 Critical (3) 

 Unicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=xx:xx:xx:xx:xx:f8;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0; 

 Sat Sep 26 09:00:41 2020  

 Critical (3) 

 16 consecutive T3 timeouts while trying to range on upstream channel 1;CM-MAC=xx:xx:xx:xx:xx:f8;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0; 

 Sun Sep 27 11:47:06 2020  

 Critical (3) 

 Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=xx:xx:xx:xx:xx:f8;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0; 

 Wed Sep 30 02:22:19 2020  

 Warning (5) 

 MDD message timeout;CM-MAC=xx:xx:xx:xx:xx:f8;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0; 

 Sat Oct 03 00:22:05 2020  

 Critical (3) 

 Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=xx:xx:xx:xx:xx:f8;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0; 

 Sat Oct 03 14:28:02 2020  

 Warning (5) 

 MDD message timeout;CM-MAC=xx:xx:xx:xx:xx:f8;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0; 

 Sun Oct 04 09:28:39 2020  

 Critical (3) 

 Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=xx:xx:xx:xx:xx:f8;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0; 

 Sun Oct 04 09:32:59 2020  

 Critical (3) 

 Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=xx:xx:xx:xx:xx:f8;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0; 

 Sun Oct 04 09:33:33 2020  

 Critical (3) 

 No Ranging Response received - T3 time-out;CM-MAC=xx:xx:xx:xx:xx:f8;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.0;CM-VER=3.0; 

 Sun Oct 04 09:33:48 2020  

 Notice (6) 

 Honoring MDD; IP provisioning mode = IPv6 

 Mon Oct 05 03:02:08 2020  

 Critical (3) 

 Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=xx:xx:xx:xx:xx:f8;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0; 

 Mon Oct 05 03:02:08 2020  

 Critical (3) 

 Unicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=xx:xx:xx:xx:xx:f8;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0; 

 Mon Oct 05 03:02:08 2020  

 Critical (3) 

 16 consecutive T3 timeouts while trying to range on upstream channel 2;CM-MAC=xx:xx:xx:xx:xx:f8;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0; 

 Mon Oct 05 08:39:10 2020  

 Critical (3) 

 Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=xx:xx:xx:xx:xx:f8;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0; 

 Mon Oct 05 08:43:30 2020  

 Critical (3) 

 Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=xx:xx:xx:xx:xx:f8;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0; 

 Mon Oct 05 08:43:42 2020  

 Notice (6) 

 Honoring MDD; IP provisioning mode = IPv6 

 

The signal looks fine.

Connection

Top of Form

 

   Startup Sequence
 

 

 

 

   Startup Step

Status

Comment
 

 



  

   Acquire Downstream Channel

531000000 Hz

Locked
 

 


  

   Upstream Connection

OK

Operational
 

 


  

   Boot State

OK

Operational
 

 



  

   Configuration File

OK

d11_m_mb7621_performancepro_c01.cm
 

 


  

   Security

Enabled

BPI+
 

 


  

 

   Connection Status
 

 

 

 

   System Up Time

30 days 19h:05m:36s

 
 

 


  

   Network Access

Allowed

 
 

 


  

 

   Downstream Bonded Channels
 

 

 
 

 


  

   Channel

Lock Status

Modulation

Channel ID

Freq. (MHz)

Pwr (dBmV)

SNR (dB)

Corrected

Uncorrected

1

Locked

QAM256

24

531.0

12.7

43.2

15564

10511

2

Locked

QAM256

25

537.0

12.9

43.3

16970

10591

3

Locked

QAM256

26

543.0

13.2

43.5

16016

11029

4

Locked

QAM256

27

549.0

13.3

43.5

15367

10521

5

Locked

QAM256

28

555.0

13.4

43.5

15822

11361

6

Locked

QAM256

29

561.0

13.5

43.7

15968

10708

7

Locked

QAM256

30

567.0

13.7

43.7

15941

10969

8

Locked

QAM256

31

573.0

13.7

43.4

14962

9880

9

Locked

QAM256

32

579.0

13.8

43.6

14935

9443

10

Locked

QAM256

33

585.0

14.0

43.6

14596

9666

11

Locked

QAM256

34

591.0

14.2

43.6

14705

10320

12

Locked

QAM256

35

597.0

14.1

43.5

14901

11474

13

Locked

QAM256

36

603.0

14.0

43.4

13955

9645

14

Locked

QAM256

37

609.0

14.1

43.4

14003

10079

15

Locked

QAM256

38

615.0

14.1

43.3

13286

8993

16

Locked

QAM256

39

621.0

14.2

43.5

13271

9746

17

Locked

QAM256

40

627.0

14.3

44.1

13412

14025

18

Locked

QAM256

41

633.0

14.5

44.0

12863

14306

19

Locked

QAM256

42

639.0

14.5

43.6

12739

14180

20

Locked

QAM256

43

645.0

14.6

44.0

12752

13241

21

Locked

QAM256

44

651.0

14.5

43.1

12047

12844

22

Locked

QAM256

45

657.0

14.8

43.2

12190

12826

23

Locked

QAM256

46

663.0

15.0

43.0

12016

13726

24

Locked

QAM256

47

669.0

15.1

43.7

12498

13819

Total

 

 

 

 

 

 

340779

273903

 

   Upstream Bonded Channels
 

 

 
 

 


  

   Channel

Lock Status

Channel Type

Channel ID

Symb. Rate (Ksym/sec)

Freq. (MHz)

Pwr (dBmV)

1

Locked

ATDMA

4

5120

36.7

47.3

2

Locked

ATDMA

1

5120

17.3

47.8

3

Locked

ATDMA

2

5120

23.7

47.0

4

Locked

ATDMA

3

5120

30.3

47.3

5

Not Locked

Unknown

0

0

0

0.0

6

Not Locked

Unknown

0

0

0

0.0

7

Not Locked

Unknown

0

0

0

0.0

8

Not Locked

Unknown

0

0

0

0.0

 

 

Question

390

0

0

0

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