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crtrjon
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Message 1 of 16
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Loss and Latency CMTS?

Hi All,

I have been having a lot of issues now for 3/4 months which before then never happened.

My main issue is that I am getting serious loss and latency every day, all different times of the day, the net will be good for 2-4 hours then I get 30-1 hour of loss and latency, This means work Voip calls are off the cards and so is any gaming on downtime, rubberbanding everywhere.

I have spoken to Virgin and got the normal restart router etc 3 times, then I had a guy come out to check the lines, showed him my findings he could only check the strength of the signal, and today I have a replacement SuperHub3 arrived which I have swapped out. I have tested in router mode as I run a Meraki Stack behind in modem mode and even on just virgin equipment I still get the same issues.

ping.pnglossandlate.pngcmts.png

I've checked with friends on Virgin and their first hope is their router and then the local exchange, mine seems to hit this 10.46.188.1 address which sounds like a CMTS, the engineer agreed that didn't seem right.

Has anyone else had this, if so any ideas, thought I would try here before going back to them for the final time! Gaming aside I get latency and ping up to 200ms and turn into a robot on work calls even to the point I drop out the call, and yes I have turned off all other devices on the network, checked for tasks or downloads which may have been runnings, I bypassed directly to my pc without my Meraki when the router is in router mode and I still hit this IP on the first hop and still get the crazy loss and latency.

Also when the loss isn't there I still hit this 10. address so it's not just when the connection is bad.

Any help would be appreciated.

 

Thanks

Jon

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Roger_Gooner
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Message 2 of 16
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Re: Loss and Latency CMTS?

Can you post some stats. Go to 192.168.0.1 (router mode) or 192.168.100.1 (modem mode), do not log in, click on the link "Check Router Status".
Copy and paste the Downstream, Upstream and Network Logs. Mask any public IP address.

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Hub 3.0, TP-Link Archer C8, TP-Link TL-SG1008D 8-port gigabit switch, V6
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crtrjon
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Message 3 of 16
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Re: Loss and Latency CMTS?

currently, it's ok as ping is normal but this is current.

Down

Channel Frequency (Hz) Power (dBmV) SNR (dB) Modulation Channel ID

1 434750000 -0.7 40 256 qam 33
2 250750000 -0.7 40 256 qam 15
3 258750000 -0.7 40 256 qam 16
4 266750000 -1.4 40 256 qam 17
5 274750000 -1.5 40 256 qam 18
6 282750000 -1.5 40 256 qam 19
7 290750000 -1.5 40 256 qam 20
8 298750000 -2.5 40 256 qam 21
9 306750000 -1.5 40 256 qam 22
10 314750000 -1.5 40 256 qam 23
11 322750000 -1.2 40 256 qam 24
12 330750000 -1.4 40 256 qam 25
13 378750000 -1.7 40 256 qam 26
14 386750000 -1.9 40 256 qam 27
15 394750000 -1.5 40 256 qam 28
16 402750000 -1.2 40 256 qam 29
17 410750000 -1 40 256 qam 30
18 418750000 -1.2 40 256 qam 31
19 426750000 -0.9 40 256 qam 32
20 442750000 -0.9 40 256 qam 34
21 450750000 -0.7 40 256 qam 35
22 458750000 -0.2 40 256 qam 36
23 466750000 -0.2 40 256 qam 37
24 474750000 0 40 256 qam 38

 

Downstream bonded channels

Channel Locked Status RxMER (dB) Pre RS Errors Post RS Errors

1 Locked 40.9 17 0
2 Locked 40.9 5 0
3 Locked 40.9 5 0
4 Locked 40.3 6 0
5 Locked 40.3 8 0
6 Locked 40.9 12 0
7 Locked 40.3 12 0
8 Locked 40.3 1 0
9 Locked 40.9 5 0
10 Locked 40.9 7 0
11 Locked 40.9 9 0
12 Locked 40.3 6 0
13 Locked 40.9 6 0
14 Locked 40.3 5 0
15 Locked 40.9 5 0
16 Locked 40.3 4 0
17 Locked 40.3 6 0
18 Locked 40.9 5 0
19 Locked 40.3 20 0
20 Locked 40.9 7 0
21 Locked 40.9 4 0
22 Locked 40.9 18 0
23 Locked 40.9 5 0
24 Locked 40.9 0 0

Up

Upstream bonded channels

Channel Frequency (Hz) Power (dBmV) Symbol Rate (ksps) Modulation Channel ID

1 53699959 4.875 5120 64 qam 2
2 39399988 4.725 5120 64 qam 4
3 46200009 4.725 5120 64 qam 3
4 60299913 4.725 5120 64 qam 1


Upstream bonded channels

Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts

1 ATDMA 0 0 0 0
2 ATDMA 0 0 0 0
3 ATDMA 0 0 0 0
4 ATDMA 0 0 0 0


Network logs: Blanked Out Mac addresses.

03/06/2020 09:31:58 notice LAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
03/06/2020 09:26:32 notice SW download Successful - Via Config file
03/06/2020 09:24:25 notice SW Download INIT - Via Config file
01/01/1970 00:01:39 critical No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
11/05/2020 12:11:29 notice Unit has been restored to factory defaults from a software issued command;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
11/05/2020 12:05:4 Warning! RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
11/05/2020 11:59:57 notice SW download Successful - Via Config file
11/05/2020 11:54:28 notice SW Download INIT - Via Config file
01/01/1970 00:01:33 critical No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
13/03/2020 09:53:19 Warning! RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
13/03/2020 09:53:19 critical SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
13/03/2020 09:53:18 Warning! RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
13/03/2020 09:53:18 critical SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
13/03/2020 09:53:17 Warning! RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
11/03/2020 15:22:33 critical No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
10/03/2020 17:09:3 notice DHCP Renew - lease parameters tftp file-cmreg-vmdg505-rtsl10016u-b.cm modified;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
10/03/2020 17:09:3 Error DHCP REBIND WARNING - Field invalid in response;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
10/03/2020 13:20:12 Error DHCP RENEW sent - No response for IPv4;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
10/03/2020 09:33:43 critical No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
09/03/2020 10:38:49 Error DHCP RENEW sent - No response for IPv4;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;


Thanks

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Roger_Gooner
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Message 4 of 16
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Re: Loss and Latency CMTS?

There's nothing that shows a recent problem. When you next get dropouts repost the stats and logs.

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crtrjon
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Message 5 of 16
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Re: Loss and Latency CMTS?

update.

Channel Frequency (Hz) Power (dBmV) SNR (dB) Modulation Channel ID
1 434750000 -0.2 40 256 qam 33
2 250750000 0.4 40 256 qam 15
3 258750000 0.2 40 256 qam 16
4 266750000 -0.2 40 256 qam 17
5 274750000 -0.2 40 256 qam 18
6 282750000 -0.2 40 256 qam 19
7 290750000 -0.5 40 256 qam 20
8 298750000 -1.2 38 256 qam 21
9 306750000 -0.4 40 256 qam 22
10 314750000 -0.4 40 256 qam 23
11 322750000 -0.2 40 256 qam 24
12 330750000 -0.2 40 256 qam 25
13 378750000 -0.7 40 256 qam 26
14 386750000 -1 40 256 qam 27
15 394750000 -0.7 40 256 qam 28
16 402750000 -0.5 40 256 qam 29
17 410750000 -0.2 40 256 qam 30
18 418750000 -0.4 40 256 qam 31
19 426750000 -0.2 40 256 qam 32
20 442750000 -0.2 40 256 qam 34
21 450750000 0 40 256 qam 35
22 458750000 0.4 40 256 qam 36
23 466750000 0.4 40 256 qam 37
24 474750000 0.5 40 256 qam 38


Downstream bonded channels
Channel Locked Status RxMER (dB) Pre RS Errors Post RS Errors
1 Locked 40.3 89 11
2 Locked 40.3 395 70
3 Locked 40.3 259 82
4 Locked 40.9 387 104
5 Locked 40.3 889 132
6 Locked 40.3 1047 147
7 Locked 40.3 358 135
8 Locked 38.9 257 116
9 Locked 40.9 186 43
10 Locked 40.9 215 13
11 Locked 40.9 215 21
12 Locked 40.3 184 34
13 Locked 40.9 111 10
14 Locked 40.9 117 12
15 Locked 40.9 118 3
16 Locked 40.9 104 0
17 Locked 40.3 98 6
18 Locked 40.9 76 0
19 Locked 40.9 91 0
20 Locked 40.9 69 12
21 Locked 40.9 68 7
22 Locked 40.3 73 0
23 Locked 40.9 41 0
24 Locked 40.3 40 0

Upstream bonded channels
Channel Frequency (Hz) Power (dBmV) Symbol Rate (ksps) Modulation Channel ID
1 53699959 4.575 5120 64 qam 2
2 39399988 4.625 5120 64 qam 4
3 46200000 4.575 5120 64 qam 3
4 60299913 4.575 5120 64 qam 1


Upstream bonded channels
Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts
1 ATDMA 0 0 0 0
2 ATDMA 0 0 0 0
3 ATDMA 0 0 0 0
4 ATDMA 0 0 0 0

ime Priority Description
05/06/2020 10:35:32 critical No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
03/06/2020 09:31:58 notice LAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
03/06/2020 09:26:32 notice SW download Successful - Via Config file
03/06/2020 09:24:25 notice SW Download INIT - Via Config file

also, tracert to my first hop (local virgin exchange) get 300+ MS!

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crtrjon
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Message 6 of 16
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Re: Loss and Latency CMTS?

MoreLatency.png

385ms to be exact best of 3 results

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Tudor
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Message 7 of 16
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Re: Loss and Latency CMTS?

Don’t worry about the 10.x.x.x address, this is normal. 


Tudor
There are 10 types of people: those who understand binary and those who don't and F people out of 10 who do not understand hexadecimal c1a2a285948293859940d9a49385a2
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Beth_G
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Message 8 of 16
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Re: Loss and Latency CMTS?

Hi crtrjon,

 

Welcome to the community and thanks for posting.

 

I'm sorry to hear of the issues you've been having with your services.

 

Upon checking things from this side, I'm unable to find any reason as to why you are experiencing these issues. All your hub specs are within the correct parameters and nothing appears out of the ordinary from here.

 

Can you please confirm if you are still affected by these issues or if they have improved since posting?

 

Many thanks,

 

Beth

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Roger_Gooner
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Message 9 of 16
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Re: Loss and Latency CMTS?

There is certainly a problem as there is no way that it should take that long to get to the core router, after all it's not a million miles from the CMTS. Here's my trace route.

C:\>tracert dns.google

Tracing route to dns.google [8.8.8.8]
over a maximum of 30 hops:

  1    <1 ms    <1 ms    <1 ms  192.168.1.1
  2     *        *        *     Request timed out.
  3     9 ms     9 ms     9 ms  haye-core-2a-xe-233-0.network.virginmedia.net [62.253.8.121]
  4     *        *        *     Request timed out.
  5    11 ms    18 ms    10 ms  tele-ic-7-ae2-0.network.virginmedia.net [62.253.175.34]
  6    16 ms     9 ms     9 ms  74-14-250-212.static.virginm.net [212.250.14.74]
  7    14 ms    13 ms    13 ms  74.125.242.97
  8    24 ms    16 ms    16 ms  172.253.66.101
  9    15 ms    17 ms    16 ms  dns.google [8.8.8.8]

Trace complete.

C:\>
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crtrjon
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Message 10 of 16
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Re: Loss and Latency CMTS?

Hi Beth,

Still having this issue daily I'm afraid, random times of the day also, high loss and latency.

I also noticed more logs on the router.

10/06/2020 02:11:37criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
09/06/2020 12:31:28noticeDHCP Renew - lease parameters tftp file-cmreg-vmdg505-rtsxl20016u-b.cm modified;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
09/06/2020 12:31:28ErrorDHCP REBIND WARNING - Field invalid in response;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
09/06/2020 08:35:41ErrorDHCP RENEW sent - No response for IPv4;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
09/06/2020 04:46:59criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
09/06/2020 04:39:56ErrorDHCP RENEW sent - No response for IPv4;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
09/06/2020 01:58:35criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
08/06/2020 20:48:26ErrorDHCP RENEW sent - No response for IPv4;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
08/06/2020 12:53:9criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
08/06/2020 05:05:27ErrorDHCP RENEW sent - No response for IPv4;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
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