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Unicast Ranging Received Abort Response

Hi there,

My Hub 3.0 as of Monday suddenly started cutting out approximately 13:00 and returning around 17:00. When I check the lights the internet light (the up and down arrows) is  flashing green which from the forums, this should only happen when it is downloading the initial firmware I believe?

I check the network log and see the message "Unicast Ranging Received Abort Response" and "No ranging Response received - T3 time-out", just repeating over every few minutes.

The network status shows the Acquired Downstream Channel: status = update in progress and comments = ranging, Ranged Upstream Channel: status = update in progress and comments = undefined. Yesterday it was only the Upstream Channel showing this.

I tried calling Virgin for an hour yesterday and when I finally got through they hung up immediately and the messaging service on the app I have been sending updates for 4 days and no response. Please help, I'm working from home and need this to keep me in work.

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Re: Unicast Ranging Received Abort Response

Network Log

Time Priority Description

26/03/2020 17:03:32noticeLAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
26/03/2020 16:58:15criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
26/03/2020 16:58:15ErrorTCS Fail on all Upstream Channels;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
26/03/2020 16:58:15criticalUnicast Ranging Received Abort Response - initializing MAC;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
26/03/2020 16:33:46criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
26/03/2020 16:33:46criticalUnicast Ranging Received Abort Response - initializing MAC;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
26/03/2020 16:31:56criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
26/03/2020 16:31:56criticalUnicast Ranging Received Abort Response - initializing MAC;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
26/03/2020 16:30:53criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
26/03/2020 16:30:53criticalUnicast Ranging Received Abort Response - initializing MAC;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
26/03/2020 16:29:59criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
26/03/2020 16:29:59criticalUnicast Ranging Received Abort Response - initializing MAC;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
26/03/2020 16:28:1criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
26/03/2020 16:28:1criticalUnicast Ranging Received Abort Response - initializing MAC;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
26/03/2020 16:27:12criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
26/03/2020 16:27:12criticalUnicast Ranging Received Abort Response - initializing MAC;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
26/03/2020 16:25:28criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
26/03/2020 16:25:27criticalUnicast Ranging Received Abort Response - initializing MAC;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
26/03/2020 16:24:25criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
26/03/2020 16:24:24criticalUnicast Ranging Received Abort Response - initializing MAC;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

 

Downstream bonded channels

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

1291000000-16.933256 qam20
2219000000-16.233256 qam11
3227000000-16.233256 qam12
4235000000-16.433256 qam13
5243000000-16.833256 qam14
6251000000-16.733256 qam15
7259000000-16.833256 qam16
8267000000-16.933256 qam17
9275000000-16.833256 qam18
10283000000-16.933256 qam19
11299000000-16.832256 qam21
12307000000-17.232256 qam22
13315000000-17.432256 qam23
14323000000-17.532256 qam24
15347000000-17.732256 qam25
16355000000-17.832256 qam26
17363000000-17.832256 qam27
18371000000-17.932256 qam28
19379000000-1832256 qam29
20387000000-1832256 qam30
21395000000-1832256 qam31
22403000000-1832256 qam32
23411000000-17.832256 qam33
24419000000-17.932256 qam34



Downstream bonded channels

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

1Locked3386800
2Locked33.813110
3Locked33.421050
4Locked33.421450
5Locked33.431050
6Locked33.343000
7Locked3356710
8Locked3364100
9Locked3356760
10Locked3367630
11Locked32.6182870
12Locked32.9129550
13Locked32.6167420
14Locked32.6174310
15Locked32.6265400
16Locked32.5285430
17Locked32.6287220
18Locked32.3376240
19Locked32.2555870
20Locked32.2394230
21Locked32.5323300
22Locked32.3404710
23Locked32.3500710
24Locked32.2427640

 

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Re: Unicast Ranging Received Abort Response

I managed to reboot the Hub 3.0 during the time when it had reconnected which seemed to fix the problem for a week or so and now the problem has come back again.

The front of the hub:

Green WiFi light

Flashing green internet light

Green power light

Router status:

AcquiredDownstream Channel: 291000000, ranging

Ranged Upstream Channel: update in progress, undefined

Provisioning state: offline

Has anyone encountered this problem before? I could really do with the assistance.

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Helpful Answer

Re: Unicast Ranging Received Abort Response

Hi, 

Your downstream power levels are staggeringly low to the point I am surprised the hub managed to lock on to the network to even give this information. Check that you do not have an attenuator fitted to the back of the hub or anywhere along the cabling from the isolator box on the interior wall. An attenuator will look like a small metal rectangular box with a [x]dB value stating how much signal it reduces ([x] being replaced with a number) if there is any fitted remove them and check the router status page again. 

Hope this helps
Jake
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I am a Virgin Media Field Technician. All and any advice given is based on my experience in the field or my personal experiences with my own set up at home. If my answer was helpful to you please Mark as helpful or consider leaving the post some Kudos.
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Re: Unicast Ranging Received Abort Response

Hi Jake,

I have found the attenuator you mentioned and removed it, my internet has returned and here are the updated stats on the status page:

Acquired Downstream Channel (Hz)
291000000
Locked
Ranged Upstream Channel (Hz)
46200026
Locked
Provisioning State
Online

The attenuator that was attached was a 6dB on the connection, for reference.


Does that look much better to you? Thank you massively for the help on this.

Robin

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Re: Unicast Ranging Received Abort Response

Hi again,

Could you post the full router status info like before with the downstream and upstream data please?

Hope this helps
Jake
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I am a Virgin Media Field Technician. All and any advice given is based on my experience in the field or my personal experiences with my own set up at home. If my answer was helpful to you please Mark as helpful or consider leaving the post some Kudos.
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Re: Unicast Ranging Received Abort Response

Downstream bonded channels
Channel Frequency (Hz) Power (dBmV) SNR (dB) Modulation Channel ID
1 291000000 -11.7 36 256 qam 20
2 219000000 -10.9 36 256 qam 11
3 227000000 -11 36 256 qam 12
4 235000000 -11.2 36 256 qam 13
5 243000000 -11.5 36 256 qam 14
6 251000000 -11.5 36 256 qam 15
7 259000000 -11.5 36 256 qam 16
8 267000000 -11.7 36 256 qam 17
9 275000000 -11.5 36 256 qam 18
10 283000000 -11.7 36 256 qam 19
11 299000000 -11.7 36 256 qam 21
12 307000000 -11.9 36 256 qam 22
13 315000000 -12.2 36 256 qam 23
14 323000000 -12.2 36 256 qam 24
15 347000000 -12.5 36 256 qam 25
16 355000000 -12.5 36 256 qam 26
17 363000000 -12.7 36 256 qam 27
18 371000000 -12.7 35 256 qam 28
19 379000000 -13 35 256 qam 29
20 387000000 -12.7 35 256 qam 30
21 395000000 -13 35 256 qam 31
22 403000000 -13 35 256 qam 32
23 411000000 -12.7 35 256 qam 33
24 419000000 -12.7 36 256 qam 34


Downstream bonded channels
Channel Locked Status RxMER (dB) Pre RS Errors Post RS Errors
1 Locked 36.6 275757 4401
2 Locked 36.6 6 0
3 Locked 36.6 19 0
4 Locked 36.6 5 0
5 Locked 36.6 4 0
6 Locked 36.6 0 0
7 Locked 36.6 5 0
8 Locked 36.3 1 0
9 Locked 36.6 6 0
10 Locked 36.6 1 0
11 Locked 36.3 5 0
12 Locked 36.3 5 0
13 Locked 36.3 0 0
14 Locked 36.6 0 0
15 Locked 36.6 7 0
16 Locked 36.3 6 0
17 Locked 36.3 6 0
18 Locked 35.7 4 0
19 Locked 35.5 3 0
20 Locked 35.7 6 0
21 Locked 35.7 4 0
22 Locked 35.7 6 0
23 Locked 35.7 7 0
24 Locked 36.3 2 0


Upstream bonded channels
Channel Frequency (Hz) Power (dBmV) Symbol Rate (ksps) Modulation Channel ID
1 46200026 5.7 5120 64 qam 11


Upstream bonded channels
Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts
1 ATDMA 0 0 0 0
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Re: Unicast Ranging Received Abort Response

Hi,

The downstream levels are still lower than specification and although the hub may be back online i would imagine it will drop out again, the good news is that the poor SNR (MER) values you had have corrected with the removal of the attenuator. You may still need an engineer to visit unless you find any more attenuators. If you do need a visit booked Please PM me your account details; Account number, account holders name, 1st line of address, Site ID/Area code. To PM me hover over my profile picture and select send message and ill be happy to look in to it for you.

Hope this helps
Jake
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I am a Virgin Media Field Technician. All and any advice given is based on my experience in the field or my personal experiences with my own set up at home. If my answer was helpful to you please Mark as helpful or consider leaving the post some Kudos.
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Want to save £50 off your bill by referring a friend? Send me a PM and I'll let you know how!


Here to help! I'm a technician helping out whilst working from home. Find out more


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