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HatfieldMcCoy's avatar
HatfieldMcCoy
New Contributor
7 years ago

No Ranging Response received - T3 time-out error

Trying to figure out if I have a potential problem with my Netgear CMD31T modem or if there is a communication problem between the modem and Cox servers. As I expected this problem is way above the heads of Tier 1 support so I thought I'd check in here. My downstream throughput is fine (60M) and I do have upstream throughput that is within parameters (5M).

My problem is the modem upstream channel/sync lights show a problem. 1/2 is orange and 3/4 is out. When I get into the modem it shows sync and signal issues:

Connection


Startup Procedure
Procedure Status Comment
Acquire Downstream Channel 789000000 Hz Locked
Connectivity State OK Operational
Boot State OK Operational
Configuration File Complete  
Security Enabled BPI+

Downstream Channel 0
Lock Status Locked Modulation 256 QAM
Channel ID 1 Symbol rate 5360537
Downstream Frequency 789000000 Hz Downstream Power 9.3961 dBmV
SNR 37.6363 dBmV Correctables 422
Uncorrectables 694    

Downstream Channel 1
Lock Status Locked Modulation 256 QAM
Channel ID 2 Symbol rate 5360537
Downstream Frequency 783000000 Hz Downstream Power 9.1820 dBmV
SNR 37.9359 dBmV Correctables 393
Uncorrectables 1374    

Downstream Channel 2
Lock Status Locked Modulation 256 QAM
Channel ID 3 Symbol rate 5360537
Downstream Frequency 795000000 Hz Downstream Power 8.6046 dBmV
SNR 37.9359 dBmV Correctables 414
Uncorrectables 469    

Downstream Channel 3
Lock Status Locked Modulation 256 QAM
Channel ID 4 Symbol rate 5360537
Downstream Frequency 801000000 Hz Downstream Power 8.9304 dBmV
SNR 38.2578 dBmV Correctables 1644
Uncorrectables 8457    

Upstream Channel 0
Lock Status Locked Modulation 64QAM
Channel ID 4 Symbol rate 5120 Ksym/sec
Upstream Frequency 36700000 Hz Upstream Power 35.7500 dBmV

Upstream Channel 1
Lock Status Not Locked Modulation  
Channel ID 0 Symbol rate 0 Ksym/sec
Upstream Frequency 0 Hz Upstream Power 0 dBmV

Upstream Channel 2
Lock Status Not Locked Modulation  
Channel ID 0 Symbol rate 0 Ksym/sec
Upstream Frequency 0 Hz Upstream Power 0 dBmV

Upstream Channel 3
Lock Status Not Locked Modulation  
Channel ID 0 Symbol rate 0 Ksym/sec
Upstream Frequency 0 Hz Upstream Power 0 dBmV

Current System Time:Tue Jan 16 14:34:19 2018 

This is a recent error log

 Tue Jan 2 23:12:32 2018    Critical (3)   No Ranging Response received - T3 time-out;CM-MAC=e8:fc:af:ad... 
 Wed Jan 3 23:11:16 2018    Notice (6)   DHCP Renew - lease parameters tftp file-^1/C312B450/DEF/001 m... 
 Sun Jan 7 08:49:02 2018    Critical (3)   No Ranging Response received - T3 time-out;CM-MAC=e8:fc:af:ad 
 Sun Jan 14 11:11:16 2018    Notice (6)   DHCP Renew - lease parameters tftp file-^1/C312B450/DEF/001 m... 
 Time Not Established   Warning (5)   MDD message timeout;CM-MAC=e8:fc:af:ad:XX:XX;CMTS-MAC=2c:86:d... 
 Mon Jan 15 16:26:20 2018    Warning (5)   MIMO Event MIMO: Stored MIMO=-1 post cfg file MIMO=-1;CM-MAC=... 
 Mon Jan 15 16:26:20 2018    Notice (6)   TLV-11 - unrecognized OID;CM-MAC=e8:fc:af:ad:XX:XX

a note--I've modified the modem MAC address in this log for security.

I'm trying to confirm if I've got a modem in a pre fail state. If that is the case, I don't need a truck roll to my site.

Advice on next steps?

Thanks

  • JonathanJ's avatar
    JonathanJ
    Former Moderator
    @HatfieldMcCoy

    Please email your full address and the primary name of the account holder to cox.help@cox.com so we can take a closer look.