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Multiple Daily Outages for ~5 Minutes Each - "No Ranging Response received"

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ravishi
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‎06-09-2020 05:28 PM

Multiple Daily Outages for ~5 Minutes Each - "No Ranging Response received"

I have Xfinity Gigabit Internet plan with a Netgear CM1200 modem.  Every day, there is one or more network outage where there is no connectivity at all for about 5-10 minutes.  It happens randomly with no specific pattern.  I've verified that it isn't my home networking equipment as I've been connected wired directly to the modem and the issue still occurs.

 

The modem logs during the outage are copied below.  There are multiple "Critical" type logs including "No Ranging Response received - T3 time-out" and "no Unicast Maintenance opportunities received - T4 time out".  I've seen other posts similar to this where Comcast stepped into help.  Hope that can happen here or others from the community can suggest what to do.  Link aggregation (LACP) is disabled on the modem which is the only known related issue I could find related to CM1200.

 

Time Priority Description
Tue Jun 09 13:13:44 2020 Notice (6) CM-STATUS message sent. Event Type Code: 16; Chan ID: 48; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-MAC=08:36:c9:xx:xx:xx;CMTS-MAC=00:01:5c:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;
Tue Jun 09 13:13:42 2020 Notice (6) CM-STATUS message sent. Event Type Code: 24; Chan ID: 48; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 1 2 3.;CM-MAC=08:36:c9:xx:xx:xx;CMTS-MAC=00:01:5c:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;
Tue Jun 09 13:12:33 2020 Notice (6) CM-STATUS message sent. Event Type Code: 24; Chan ID: 48; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 1 2.;CM-MAC=08:36:c9:xx:xx:xx;CMTS-MAC=00:01:5c:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;
Tue Jun 09 13:12:02 2020 Notice (6) CM-STATUS message sent. Event Type Code: 16; Chan ID: 48; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 1 2 3.;CM-MAC=08:36:c9:xx:xx:xx;CMTS-MAC=00:01:5c:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;
Tue Jun 09 13:11:59 2020 Notice (6) CM-STATUS message sent. Event Type Code: 16; Chan ID: 48; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 2.;CM-MAC=08:36:c9:xx:xx:xx;CMTS-MAC=00:01:5c:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;
Tue Jun 09 13:11:38 2020 Notice (6) DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.;CM-MAC=08:36:c9:xx:xx:xx;CMTS-MAC=00:01:5c:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;
Tue Jun 09 13:11:38 2020 Notice (6) TLV-11 - unrecognized OID;CM-MAC=08:36:c9:xx:xx:xx;CMTS-MAC=00:01:5c:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;
Tue Jun 09 13:11:25 2020 Notice (6) Honoring MDD; IP provisioning mode = IPv6
Tue Jun 09 13:11:17 2020 Critical (3) No Ranging Response received - T3 time-out;CM-MAC=08:36:c9:xx:xx:xx;CMTS-MAC=00:01:5c:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;
Tue Jun 09 13:11:02 2020 Critical (3) Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=08:36:c9:xx:xx:xx;CMTS-MAC=00:01:5c:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;
Tue Jun 09 13:11:02 2020 Critical (3) No Ranging Response received - T3 time-out;CM-MAC=08:36:c9:xx:xx:xx;CMTS-MAC=00:01:5c:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;
Tue Jun 09 13:11:02 2020 Notice (6) CM-STATUS message sent. Event Type Code: 22; Chan ID: 48; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=08:36:c9:xx:xx:xx;CMTS-MAC=00:01:5c:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;
Tue Jun 09 13:11:01 2020 Critical (3) Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=08:36:c9:xx:xx:xx;CMTS-MAC=00:01:5c:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;
Tue Jun 09 13:11:00 2020 Critical (3) No Ranging Response received - T3 time-out;CM-MAC=08:36:c9:xx:xx:xx;CMTS-MAC=00:01:5c:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;
Tue Jun 09 13:10:59 2020 Critical (3) Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=08:36:c9:xx:xx:xx;CMTS-MAC=00:01:5c:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;
Tue Jun 09 13:10:58 2020 Critical (3) No Ranging Response received - T3 time-out;CM-MAC=08:36:c9:xx:xx:xx;CMTS-MAC=00:01:5c:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;
Tue Jun 09 13:10:54 2020 Notice (6) CM-STATUS message sent. Event Type Code: 24; Chan ID: 48; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 1.;CM-MAC=08:36:c9:xx:xx:xx;CMTS-MAC=00:01:5c:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;
Tue Jun 09 13:10:53 2020 Critical (3) No Ranging Response received - T3 time-out;CM-MAC=08:36:c9:xx:xx:xx;CMTS-MAC=00:01:5c:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;
Tue Jun 09 13:10:51 2020 Critical (3) Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=08:36:c9:xx:xx:xx;CMTS-MAC=00:01:5c:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;
Tue Jun 09 13:10:44 2020 Notice (6) CM-STATUS message sent. Event Type Code: 24; Chan ID: 48; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 1.;CM-MAC=08:36:c9:xx:xx:xx;CMTS-MAC=00:01:5c:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;
Tue Jun 09 13:09:44 2020 Notice (6) CM-STATUS message sent. Event Type Code: 20; Chan ID: 48; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=08:36:c9:xx:xx:xx;CMTS-MAC=00:01:5c:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;
Tue Jun 09 13:09:34 2020 Notice (6) CM-STATUS message sent. Event Type Code: 16; Chan ID: 48; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 1 2 3.;CM-MAC=08:36:c9:xx:xx:xx;CMTS-MAC=00:01:5c:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;
Tue Jun 09 13:09:07 2020 Notice (6) CM-STATUS message sent. Event Type Code: 16; Chan ID: 48; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 2 3.;CM-MAC=08:36:c9:xx:xx:xx;CMTS-MAC=00:01:5c:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;
Tue Jun 09 13:09:07 2020 Notice (6) CM-STATUS message sent. Event Type Code: 24; Chan ID: 48; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 1.;CM-MAC=08:36:c9:xx:xx:xx;CMTS-MAC=00:01:5c:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;
Tue Jun 09 13:09:02 2020 Notice (6) CM-STATUS message sent. Event Type Code: 16; Chan ID: 48; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 2 3.;CM-MAC=08:36:c9:xx:xx:xx;CMTS-MAC=00:01:5c:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;
Tue Jun 09 13:08:57 2020 Notice (6) CM-STATUS message sent. Event Type Code: 24; Chan ID: 48; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 1.;CM-MAC=08:36:c9:xx:xx:xx;CMTS-MAC=00:01:5c:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;
Tue Jun 09 13:08:56 2020 Notice (6) CM-STATUS message sent. Event Type Code: 16; Chan ID: 48; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 2 3.;CM-MAC=08:36:c9:xx:xx:xx;CMTS-MAC=00:01:5c:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;
Tue Jun 09 13:08:46 2020 Notice (6) CM-STATUS message sent. Event Type Code: 24; Chan ID: 48; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 1 3.;CM-MAC=08:36:c9:xx:xx:xx;CMTS-MAC=00:01:5c:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;
Tue Jun 09 13:08:46 2020 Notice (6) CM-STATUS message sent. Event Type Code: 16; Chan ID: 48; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 2.;CM-MAC=08:36:c9:xx:xx:xx;CMTS-MAC=00:01:5c:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;
Tue Jun 09 13:08:36 2020 Notice (6) CM-STATUS message sent. Event Type Code: 24; Chan ID: 48; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 1 2 3.;CM-MAC=08:36:c9:xx:xx:xx;CMTS-MAC=00:01:5c:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;
Tue Jun 09 13:08:29 2020 Notice (6) CM-STATUS message sent. Event Type Code: 16; Chan ID: 48; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-MAC=08:36:c9:xx:xx:xx;CMTS-MAC=00:01:5c:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;
Tue Jun 09 13:08:26 2020 Notice (6) CM-STATUS message sent. Event Type Code: 24; Chan ID: 48; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 1 2.;CM-MAC=08:36:c9:xx:xx:xx;CMTS-MAC=00:01:5c:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;
Tue Jun 09 13:08:24 2020 Notice (6) CM-STATUS message sent. Event Type Code: 16; Chan ID: 48; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-MAC=08:36:c9:xx:xx:xx;CMTS-MAC=00:01:5c:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;
Tue Jun 09 13:08:15 2020 Notice (6) CM-STATUS message sent. Event Type Code: 24; Chan ID: 48; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 1 2.;CM-MAC=08:36:c9:xx:xx:xx;CMTS-MAC=00:01:5c:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;
Tue Jun 09 13:08:13 2020 Notice (6) CM-STATUS message sent. Event Type Code: 16; Chan ID: 48; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-MAC=08:36:c9:xx:xx:xx;CMTS-MAC=00:01:5c:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;
Tue Jun 09 13:08:05 2020 Notice (6) CM-STATUS message sent. Event Type Code: 24; Chan ID: 48; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 1 2 3.;CM-MAC=08:36:c9:xx:xx:xx;CMTS-MAC=00:01:5c:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;
Tue Jun 09 13:07:54 2020 Notice (6) CM-STATUS message sent. Event Type Code: 24; Chan ID: 48; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 1 2.;CM-MAC=08:36:c9:xx:xx:xx;CMTS-MAC=00:01:5c:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;
Tue Jun 09 13:07:26 2020 Notice (6) CM-STATUS message sent. Event Type Code: 16; Chan ID: 48; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 2 3.;CM-MAC=08:36:c9:xx:xx:xx;CMTS-MAC=00:01:5c:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;
Tue Jun 09 13:07:02 2020 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=08:36:c9:xx:xx:xx;CMTS-MAC=00:01:5c:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;
Tue Jun 09 13:07:00 2020 Notice (6) CM-STATUS message sent. Event Type Code: 16; Chan ID: 48; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 2.;CM-MAC=08:36:c9:xx:xx:xx;CMTS-MAC=00:01:5c:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;

 

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EG
Expert
‎06-09-2020 05:42 PM

Re: Multiple Daily Outages for ~5 Minutes Each - "No Ranging Response received"

Please also post the *Downstream Power Level*, the *Upstream Power Level*, and the *SNR* (Signal to Noise Ratio) numbers.




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ravishi
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‎06-09-2020 05:47 PM

Re: Multiple Daily Outages for ~5 Minutes Each - "No Ranging Response received"

 

Hi EG,

 

I copied the contents of the "Cable Connection" page below.  Note that this capture is when the internet is working normally.  Hope this helps.

 

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
 
Startup Procedure
Procedure Status Comment
Acquire Downstream Channel 603000000 Hz Locked
Connectivity State OK Operational
Boot State OK Operational
Security Enabled BPI+
IP Provisioning Mode Honor MDD honorMdd(4)
 
Downstream Bonded Channels
Channel Lock Status Modulation Channel ID Frequency Power SNR Correctables Uncorrectables
1 Locked QAM256 36 603000000 Hz 1.1 dBmV 41.7 dB 19637 16623
2 Locked QAM256 12 447000000 Hz 2.8 dBmV 43.2 dB 41262 26014
3 Locked QAM256 13 453000000 Hz 3 dBmV 43.2 dB 32044 17698
4 Locked QAM256 14 459000000 Hz 2.8 dBmV 43.2 dB 24604 19691
5 Locked QAM256 15 465000000 Hz 2.7 dBmV 43.1 dB 39033 24726
6 Locked QAM256 16 471000000 Hz 2.8 dBmV 43.1 dB 16373 13624
7 Locked QAM256 17 477000000 Hz 2.4 dBmV 42.8 dB 33258 20579
8 Locked QAM256 18 483000000 Hz 2.3 dBmV 42.8 dB 21817 15169
9 Locked QAM256 19 489000000 Hz 2.4 dBmV 42.7 dB 18534 14196
10 Locked QAM256 20 495000000 Hz 2 dBmV 42.7 dB 31317 24175
11 Locked QAM256 21 507000000 Hz 2.6 dBmV 42.7 dB 21987 14338
12 Locked QAM256 22 513000000 Hz 2.4 dBmV 42.4 dB 21632 16091
13 Locked QAM256 23 519000000 Hz 2.3 dBmV 42.7 dB 17785 12435
14 Locked QAM256 24 525000000 Hz 2.3 dBmV 42.5 dB 23390 16704
15 Locked QAM256 25 531000000 Hz 2.1 dBmV 42.4 dB 19948 16279
16 Locked QAM256 26 543000000 Hz 1.9 dBmV 42.5 dB 21536 17696
17 Locked QAM256 27 549000000 Hz 2 dBmV 42.6 dB 16146 12917
18 Locked QAM256 28 555000000 Hz 2.4 dBmV 42.7 dB 15366 14446
19 Locked QAM256 29 561000000 Hz 1.9 dBmV 42.5 dB 21407 16572
20 Locked QAM256 30 567000000 Hz 1.9 dBmV 42.5 dB 13990 11958
21 Locked QAM256 31 573000000 Hz 1.7 dBmV 42.5 dB 19473 16207
22 Locked QAM256 32 579000000 Hz 2.1 dBmV 42.6 dB 14775 13629
23 Locked QAM256 33 585000000 Hz 2 dBmV 42.6 dB 19098 15012
24 Locked QAM256 34 591000000 Hz 1.5 dBmV 42.4 dB 18509 16409
25 Locked QAM256 35 597000000 Hz 1.2 dBmV 42.2 dB 15170 12995
26 Locked QAM256 37 609000000 Hz 1.1 dBmV 42.2 dB 17271 14312
27 Locked QAM256 38 615000000 Hz 1.1 dBmV 42.3 dB 11841 12458
28 Locked QAM256 39 621000000 Hz 0.9 dBmV 42.1 dB 18003 16085
29 Locked QAM256 40 627000000 Hz 0.7 dBmV 42 dB 14242 11750
30 Locked QAM256 41 633000000 Hz 1.1 dBmV 42.1 dB 13831 13061
31 Locked QAM256 42 639000000 Hz 1.7 dBmV 42.3 dB 21240 14115
32 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0
 
Upstream Bonded Channels
Channel Lock Status US Channel Type Channel ID Symbol Rate Frequency Power
1 Locked ATDMA 1 5120 Ksym/sec 17300000 Hz 47.5 dBmV
2 Locked ATDMA 2 5120 Ksym/sec 23700000 Hz 47.5 dBmV
3 Locked ATDMA 3 5120 Ksym/sec 30300000 Hz 47.8 dBmV
4 Locked ATDMA 4 5120 Ksym/sec 36700000 Hz 48.5 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
 
Downstream OFDM Channels
Channel Lock
Status		 Modulation /
Profile ID		 Channel
ID		 Frequency Power SNR /
MER		 Active Subcarrier
Number Range		 Unerrored
Codewords		 Correctable
Codewords		 Uncorrectable
Codewords
1 Locked 0 ,1 ,2 ,3 48 688000000 Hz 0.8 dBmV 40.9 dB 1228 ~ 2867 1075905112 162391322 20458
2 Not Locked 0 0 0 Hz 0 dBmV 0.0 dB 0 ~ 4095 0 0 0
 
Upstream OFDMA Channels
Channel Lock Status Modulation / Profile ID Channel ID Frequency Power
1 Not Locked 0 0 0 Hz 0 dBmV
2 Not Locked 0 0 0 Hz 0 dBmV
 
Extended Upstream Transmit Power
Enable Extended Upstream Transmit Power
 
Current System Time:Tue Jun 09 13:43:02 2020
System Up Time:2 days 17:13:01

 

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EG
Expert
‎06-09-2020 06:16 PM

Re: Multiple Daily Outages for ~5 Minutes Each - "No Ranging Response received"

The upstream power is on the high side and it may be intermittently fluctuating even higher to out of spec levels. That can cause random disconnects, spontaneous re-booting of the modem, speed, packet loss, and latency problems.

In a self troubleshooting effort to try to obtain better connectivity / more wiggle room, check to see if there are there any excess/unneeded coax cable splitters in the line leading to the modem that can be eliminated/re-configured. Any splitters that remain should be high quality and cable rated for 5-1002 MHz, bi-directional, and no gold colored garbage types like GE, RadioShack, RCA, Philips, Leviton, Magnavox, and Rocketfish from big box stores like Home Depot, Lowes, Target, Wal-Mart etc. Splitters should be swapped with known to be good / new ones to test

If there aren't any unneeded splitters that can be eliminated and if your coax wiring setup can't be reconfigured so that there is a single two way splitter connected directly off of the drop from the street/pole with one port feeding the modem and the other port feeding the rest of the house/equipment with additional splits as needed, and you've checked all the wiring and fittings for integrity and tightness and refresh them by taking them apart then check for and clean off any corrosion / oxidation on the center wire and put them back together again, then perhaps it's best to book a tech visit to investigate and correct.



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ravishi
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‎06-09-2020 07:37 PM

Re: Multiple Daily Outages for ~5 Minutes Each - "No Ranging Response received"

Thanks EG!  I'm in an apartment so I can't control all splitters on the line but I'm not using any inside the apartment.  However, I reseated the connection to the modem and rebooted it.  I'm not an expert on what I should be looking for but the downstream power is higher and the upstream power is lower.  I pasted the updated "Cable Connection" output below.  I'll keep an eye on any outages over the next couple days.  If none, I'll come back and mark your reply as "Best Answer".  Thanks for your help so far!

 

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
 
Startup Procedure
Procedure Status Comment
Acquire Downstream Channel 603000000 Hz Locked
Connectivity State OK Operational
Boot State OK Operational
Security Enabled BPI+
IP Provisioning Mode Honor MDD honorMdd(4)
 
Downstream Bonded Channels
Channel Lock Status Modulation Channel ID Frequency Power SNR Correctables Uncorrectables
1 Locked QAM256 36 603000000 Hz 2 dBmV 41.8 dB 0 0
2 Locked QAM256 12 447000000 Hz 4 dBmV 43.3 dB 0 0
3 Locked QAM256 13 453000000 Hz 3.9 dBmV 43.4 dB 0 0
4 Locked QAM256 14 459000000 Hz 3.9 dBmV 43.4 dB 0 0
5 Locked QAM256 15 465000000 Hz 3.8 dBmV 43.3 dB 0 0
6 Locked QAM256 16 471000000 Hz 3.7 dBmV 43.3 dB 0 0
7 Locked QAM256 17 477000000 Hz 3.4 dBmV 43 dB 0 0
8 Locked QAM256 18 483000000 Hz 3.3 dBmV 43 dB 0 0
9 Locked QAM256 19 489000000 Hz 3.2 dBmV 42.9 dB 0 0
10 Locked QAM256 20 495000000 Hz 3.1 dBmV 42.9 dB 0 0
11 Locked QAM256 21 507000000 Hz 3.4 dBmV 42.9 dB 0 0
12 Locked QAM256 22 513000000 Hz 3.4 dBmV 42.8 dB 0 0
13 Locked QAM256 23 519000000 Hz 3.1 dBmV 42.9 dB 0 0
14 Locked QAM256 24 525000000 Hz 3.1 dBmV 42.8 dB 0 0
15 Locked QAM256 25 531000000 Hz 3.1 dBmV 42.7 dB 0 0
16 Locked QAM256 26 543000000 Hz 2.9 dBmV 42.7 dB 0 0
17 Locked QAM256 27 549000000 Hz 3 dBmV 42.9 dB 0 0
18 Locked QAM256 28 555000000 Hz 3 dBmV 43 dB 0 0
19 Locked QAM256 29 561000000 Hz 2.9 dBmV 42.9 dB 0 0
20 Locked QAM256 30 567000000 Hz 2.8 dBmV 42.8 dB 0 0
21 Locked QAM256 31 573000000 Hz 2.7 dBmV 42.8 dB 0 0
22 Locked QAM256 32 579000000 Hz 3.1 dBmV 42.8 dB 0 0
23 Locked QAM256 33 585000000 Hz 3 dBmV 42.8 dB 0 0
24 Locked QAM256 34 591000000 Hz 2.7 dBmV 42.7 dB 0 0
25 Locked QAM256 35 597000000 Hz 2.2 dBmV 42.4 dB 0 0
26 Locked QAM256 37 609000000 Hz 2.2 dBmV 42.4 dB 0 0
27 Locked QAM256 38 615000000 Hz 2.2 dBmV 42.5 dB 0 0
28 Locked QAM256 39 621000000 Hz 2.1 dBmV 42.4 dB 0 0
29 Locked QAM256 40 627000000 Hz 1.8 dBmV 42.2 dB 0 0
30 Locked QAM256 41 633000000 Hz 2.1 dBmV 42.3 dB 0 0
31 Locked QAM256 42 639000000 Hz 2.9 dBmV 42.6 dB 0 0
32 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0
 
Upstream Bonded Channels
Channel Lock Status US Channel Type Channel ID Symbol Rate Frequency Power
1 Locked ATDMA 1 5120 Ksym/sec 17300000 Hz 46.3 dBmV
2 Locked ATDMA 2 5120 Ksym/sec 23700000 Hz 46 dBmV
3 Locked ATDMA 3 5120 Ksym/sec 30300000 Hz 46.5 dBmV
4 Locked ATDMA 4 5120 Ksym/sec 36700000 Hz 47.3 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
 
Downstream OFDM Channels
Channel Lock
Status		 Modulation /
Profile ID		 Channel
ID		 Frequency Power SNR /
MER		 Active Subcarrier
Number Range		 Unerrored
Codewords		 Correctable
Codewords		 Uncorrectable
Codewords
1 Locked 0 ,1 ,2 ,3 48 688000000 Hz 1.8 dBmV 41.3 dB 1228 ~ 2867 16958472 2639300 397
2 Not Locked 0 0 0 Hz 0 dBmV 0.0 dB 0 ~ 4095 0 0 0
 
Upstream OFDMA Channels
Channel Lock Status Modulation / Profile ID Channel ID Frequency Power
1 Not Locked 0 0 0 Hz 0 dBmV
2 Not Locked 0 0 0 Hz 0 dBmV
 
Extended Upstream Transmit Power
Enable Extended Upstream Transmit Power
 
Current System Time:Tue Jun 09 15:31:33 2020
System Up Time:00:36:39
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EG
Expert
‎06-10-2020 01:02 AM

Re: Multiple Daily Outages for ~5 Minutes Each - "No Ranging Response received"

These are the desired Comcast specs from the troubleshooting tips sticky topic at the top of the board;

 

Specification      Min             Max
Downstream Power Level    
Cable Modems -10dBmV +10dBmV
Gateways and EMTAs -7dBmV +7dBmV
Downstream Signal to Noise Ratio 35dB -
Upstream Power Level +35dBmV +50dBmV
Upstream Signal to Noise Ratio 31dB -
Upstream Receive Power -2dBmV +2dBmV


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Mac_guru
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‎06-11-2020 07:29 PM

Re: Multiple Daily Outages for ~5 Minutes Each - "No Ranging Response received"

So when I check my cable settings,  My download are all < 1

 

Is this cause for concern?  I am losing packets, and have also seen the "No Ranging response received" message,  although not as frequently.


Thanks!

 

Downstream Bonded Channels
Channel Lock Status Modulation Channel ID Frequency Power SNR Correctables Uncorrectables
1 Locked QAM256 29 633000000 Hz 0.1 dBmV 39.6 dB 0 0
2 Locked QAM256 13 537000000 Hz 0.8 dBmV 39.6 dB 0 0
3 Locked QAM256 14 543000000 Hz 0.9 dBmV 39.7 dB 0 0
4 Locked QAM256 15 549000000 Hz 0.9 dBmV 39.8 dB 0 0
5 Locked QAM256 16 555000000 Hz 1 dBmV 39.8 dB 0 0
6 Locked QAM256 17 561000000 Hz 0.9 dBmV 39.5 dB 0 0
7 Locked QAM256 18 567000000 Hz 0.9 dBmV 39.9 dB 0 0
8 Locked QAM256 19 573000000 Hz 0.9 dBmV 39.9 dB 0 0
9 Locked QAM256 20 579000000 Hz 0.7 dBmV 39.8 dB 0 0
10 Locked QAM256 21 585000000 Hz 0.7 dBmV 39.7 dB 0 0
11 Locked QAM256 22 591000000 Hz 0.6 dBmV 39.7 dB 0 0
12 Locked QAM256 23 597000000 Hz 0.8 dBmV 39.8 dB 0 0
13 Locked QAM256 24 603000000 Hz 0.7 dBmV 39.7 dB 0 0
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