New Netgear cm600 only bonding on 16 channels

Question

Signals seem ok no noticeable errors. On preferred 100 just switched from preferred 50. Just bonds to 16 channels even after reset or reboot. Thought there where 32 channel bonding now so 24 should work? It is a recent modem upgrade from an older 4x4 modem.&nbsp;

widermouthopen · Answer

What state/town are you in? It's possible some older parts of Cox in Lousiana are still on 16 channels. Can you post your signal levels? If those are normal, could you also post your modem logs? Looking for some error on why it can't bond the other channels. WAG is you have a analog only(no digital TV) filter on your line that is blocking the signal the modem is trying to use to bond to those channels. I assume you are Cox internet only? No TV?

nonymou · Answer

Frequency start Value

This field below allows you to modify the frequency the cable modem start with its scan during initialization and registration. Enter the new start frequency and restart the cable modem for it to take effect.

Starting Frequency

&nbsp;

Startup Procedure

Procedure
Status
Comment

Acquire Downstream Channel
789000000 Hz
Locked

Connectivity State
OK
Operational

Boot State
OK
Operational

Security
Enable
BPI+

IP Provisioning Mode
Honor MDD
IPv4 only

&nbsp;

Downstream Bonded Channels

Channel
Lock Status
Modulation
Channel ID
Frequency
Power
SNR
Correctables
Uncorrectables

1
Locked
QAM256
2
789000000 Hz
4.9 dBmV
40.0 dB
0
0

2
Locked
QAM256
1
783000000 Hz
5.1 dBmV
40.0 dB
0
0

3
Locked
QAM256
3
795000000 Hz
5.0 dBmV
40.0 dB
0
0

4
Locked
QAM256
4
801000000 Hz
4.9 dBmV
40.0 dB
0
0

5
Locked
QAM256
5
807000000 Hz
4.9 dBmV
40.0 dB
0
0

6
Locked
QAM256
6
813000000 Hz
4.7 dBmV
39.9 dB
0
0

7
Locked
QAM256
7
819000000 Hz
4.5 dBmV
39.8 dB
0
0

8
Locked
QAM256
8
825000000 Hz
4.3 dBmV
39.8 dB
0
0

9
Locked
QAM256
17
879000000 Hz
5.4 dBmV
39.8 dB
0
0

10
Locked
QAM256
18
885000000 Hz
5.4 dBmV
39.7 dB
0
0

11
Locked
QAM256
19
891000000 Hz
5.5 dBmV
39.6 dB
0
0

12
Locked
QAM256
20
897000000 Hz
5.3 dBmV
39.6 dB
0
0

13
Locked
QAM256
21
903000000 Hz
5.1 dBmV
39.5 dB
0
0

14
Locked
QAM256
22
909000000 Hz
5.4 dBmV
39.5 dB
0
0

15
Locked
QAM256
23
915000000 Hz
5.5 dBmV
39.5 dB
0
0

16
Locked
QAM256
24
921000000 Hz
5.5 dBmV
39.5 dB
0
0

17
Not Locked
Unknown
0
0 Hz
0.0 dBmV
0.0 dB
0
0

18
Not Locked
Unknown
0
0 Hz
0.0 dBmV
0.0 dB
0
0

19
Not Locked
Unknown
0
0 Hz
0.0 dBmV
0.0 dB
0
0

20
Not Locked
Unknown
0
0 Hz
0.0 dBmV
0.0 dB
0
0

21
Not Locked
Unknown
0
0 Hz
0.0 dBmV
0.0 dB
0
0

22
Not Locked
Unknown
0
0 Hz
0.0 dBmV
0.0 dB
0
0

23
Not Locked
Unknown
0
0 Hz
0.0 dBmV
0.0 dB
0
0

24
Not Locked
Unknown
0
0 Hz
0.0 dBmV
0.0 dB
0
0

&nbsp;

Upstream Bonded Channels

Channel
Lock Status
US Channel Type
Channel ID
Symbol Rate
Frequency
Power

1
Locked
ATDMA
1
2560 Ksym/sec
18400000 Hz
40.3 dBmV

2
Locked
ATDMA
2
5120 Ksym/sec
23300000 Hz
41.0 dBmV

3
Locked
ATDMA
3
5120 Ksym/sec
29800000 Hz
43.0 dBmV

4
Locked
ATDMA
4
5120 Ksym/sec
36300000 Hz
43.5 dBmV

5
Not Locked
Unknown
0
0 Ksym/sec
0 Hz
0.0 dBmV

6
Not Locked
Unknown
0
0 Ksym/sec
0 Hz
0.0 dBmV

7
Not Locked
Unknown
0
0 Ksym/sec
0 Hz
0.0 dBmV

8
Not Locked
Unknown
0
0 Ksym/sec
0 Hz
0.0 dBmV

nonymou · Answer

Skipped today's logs as I was rebooting. Just got modem on 3/26. In Glendale, AZ.

2018-04-03, 21:26:09
Critical (3)
Started Unicast Maintenance Ranging - No Response received - T3 time-out;

2018-04-02, 09:47:35
Critical (3)
Started Unicast Maintenance Ranging - No Response received - T3 time-out;

2018-03-27, 02:10:03
Critical (3)
Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;;

2018-03-27, 00:12:34
Critical (3)
Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;

2018-03-26, 17:26:52
Critical (3)
Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;

2018-03-26, 16:56:00
Critical (3)
Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;

2018-03-26, 11:58:26
Critical (3)
SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;

2018-03-26, 11:35:18
Critical (3)
Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;

Time Not Established
Critical (3)
Telnet user logged out.

chrisl · Answer

@nonymous

Most likely a technician will be required to come troubleshoot further.  While I have no way to check from this end one possibility is a filter of some kind on the line that is no longer necessary,.

nonymou · Answer

It is a straight cable from outside to modem. Ends were done by a cox tech years ago. Is there anyway they could blame me on this and charge say a trouble isolation charge? Knew telco years ago used customer fault and trouble isolation charge a ton. Since switched never called cox repair. Plus is there a link to any trouble isolation charges etc. All i see is online help links and fluff. Mostly got my answer here but do not want to risk a charge as do not have and inside wiring coverage.&nbsp;&nbsp;
But do I run the risk of a trouble isolation type charge&nbsp; for the inside cabling even if I do not have fixed?&nbsp;
But do not think it is inside anyways. Just can not find online a link to policies on repairs and trouble isaliot is ther a link?&nbsp;

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2018-04-03, 21:26:09	Critical (3)	Started Unicast Maintenance Ranging - No Response received - T3 time-out;
2018-04-02, 09:47:35	Critical (3)	Started Unicast Maintenance Ranging - No Response received - T3 time-out;
2018-03-27, 02:10:03	Critical (3)	Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;;
2018-03-27, 00:12:34	Critical (3)	Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;
2018-03-26, 17:26:52	Critical (3)	Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;
2018-03-26, 16:56:00	Critical (3)	Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;
2018-03-26, 11:58:26	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;
2018-03-26, 11:35:18	Critical (3)	Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;
Time Not Established	Critical (3)	Telnet user logged out.