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VM 1GIG TPLink Router - Broadband goes down daily

savvy111
Tuning in

Hi all,
I have VM 1GIG Broadband package in modem mode using an Omada TP-Link Router and LAN, AP’s etc.
Roughly on a daily basis the broadband goes down, there’s no distinct pattern and it occurs most days. Outage can last from 60seconds to 5minutes. I have switched the HUB5 back into Router mode to enable monitoring/testing and I do get some dropped packets, is the amount acceptable? (see TBB graph). Also, could someone please help me with he HUB5 router logs? I don’t really know what I should be looking for - does it look ok?
Thank you..
savvy

savvy111_0-1706703377734.png

3.0 Downstream channels

Channel Frequency (Hz) Power (dBmV) SNR (dB) Modulation Channel ID
13310000007.940QAM 25625
21470000007.539QAM 2562
31550000007.639QAM 2563
41630000007.439QAM 2564
51710000007.339QAM 2565
61790000007.239QAM 2566
71870000007.239QAM 2567
81950000007.439QAM 2568
92030000007.339QAM 2569
102110000007.539QAM 25610
112190000007.639QAM 25611
122270000007.439QAM 25612
132350000007.639QAM 25613
142430000007.440QAM 25614
152510000007.440QAM 25615
162590000007.440QAM 25616
172670000007.440QAM 25617
182750000007.540QAM 25618
192830000007.640QAM 25619
202910000007.740QAM 25620
212990000007.740QAM 25621
223070000007.640QAM 25622
233150000007.640QAM 25623
243230000007.740QAM 25624
253390000008.240QAM 25626
263470000008.341QAM 25627
273550000008.141QAM 25628
283630000007.940QAM 25629
293710000007.940QAM 25630
303790000007.940QAM 25631
313870000007.840QAM 25632

3.0 Downstream channels

Channel Locked Status RxMER (dB) Pre RS Errors Post RS Errors
1Locked4000
2Locked3900
3Locked3900
4Locked3900
5Locked3900
6Locked3900
7Locked3900
8Locked3900
9Locked3900
10Locked3900
11Locked3900
12Locked3900
13Locked3900
14Locked4000
15Locked4000
16Locked4000
17Locked4000
18Locked4000
19Locked4000
20Locked4000
21Locked4000
22Locked4000
23Locked4010
24Locked4010
25Locked4000
26Locked4100
27Locked4100
28Locked4000
29Locked4000
30Locked4000
31Locked4010

3.1 Downstream channels

Channel Channel Width (MHz) FFT Type Number of Active Subcarriers Modulation (Active Profile) First Active Subcarrier (Hz)
33944K1840QAM 40961108

3.1 Downstream channels

Channel ID Locked Status RxMER Data (dB) PLC Power (dBmV) Corrected errors (Active Profile) Uncorrectable errors (Active Profile)
33Locked434.93733383550

 

 

3.0 Upstream channels

Channel Frequency (Hz) Power (dBmV) Symbol Rate (ksps) Modulation Channel ID
049600000445120QAM 327
14310000043.85120QAM 328
236600000445120QAM 329
33010000043.85120QAM 3210
42360000043.55120QAM 3211

3.0 Upstream channels

Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts
0ATDMA0000
1ATDMA0000
2ATDMA0000
3ATDMA0000
4ATDMA0000

3.1 Upstream channels

Channel Channel Width (MHz) Power (dBmV) FFT Type Modulation
1210.439.02KQAM 256

3.1 Upstream channels

Channel Channel Type Number of Active Subcarriers First Active Subcarrier (Hz) T3 Timeouts T4 Timeouts
12OFDMA2087400000000

 

 

18 REPLIES 18

jbrennand
Very Insightful Person
Very Insightful Person

Your BQM has been blocked - presumably because you left your ip address on it.  Blank it out or click the "share live link" button and it should get stripped out.

All your up qam's are at 32 - ought to be at 64 - so that might be an issue.


--------------------
John
--------------------

I do not work for VM. My services: HD TV on VIP (+ Sky Sports & Movies & TNT sport), x3 V6 boxes (1 wired, 2 on WiFi), Hub5 in modem mode with Apple Airport Extreme Router +2 Airport Express's & TP-Link Archer C64 WAP. On Volt 350Mbps, Talk Anytime Phone, x2 Mobile SIM only iPhones.

Adduxi
Very Insightful Person
Very Insightful Person

As @jbrennand says, there is an issue with the Upstream, in that they should all be QAM 64.  As for the packet loss, yes there should be none.  You will need VM to check your connection and fix these issues.  If you wait here a couple of days a VM Mod should pick this up and discuss with you directly.

I'm a Very Insightful Person, I'm here to share knowledge, I don't work for Virgin Media. Learn more

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savvy111
Tuning in

thanks jbrennand and adduxi, here's the BQM again - the dropped packets are minimal but present, and you can also see an outage / downtime around 12.30pm.

 

savvy111_0-1706716879629.png

 

Adduxi
Very Insightful Person
Very Insightful Person

Yes, your average latency is not great either IMHO.  The dropped packets are also an issue, whether or not they are small, they are still being dropped.  Check all the connections from the Hub to the outside Omnibox and make sure they are not loose, as this can cause noise ingress to the circuit.

Run the FULL tests on this website and post the results, using a wired connection directly to the Hub.

www.samknows.com/realspeed

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savvy111
Tuning in

I've run the full tests, see below. I also checked all connections and at one point the upstream QAM dropped to 16.

I've been on 1gig for a few months now and have never hit the advertised 50mbps upload speed so that could be part of the issue.

I also rebooted the HUB but no luck, still getting dropped packets.

 

savvy111_0-1706737964757.png

 

 

Hi savvy111 thanks for getting back to us.

Please can you re-confirm the hub that you're using?
Regards

Lee_R


@Lee_R wrote:

Hi savvy111 thanks for getting back to us.

Please can you re-confirm the hub that you're using?
Regards

Lee_R


"I have switched the HUB5 back into Router mode"

You should have just over 100Mbps upload with a DOCSIS 3.1 upstream channel.

savvy111
Tuning in

Thanks @carl_pearce, I average around 40mbps for upload so definitely something not right there!

My hub info:

Hub 5 device information

The information below shows current status of this Hub 5.

Standard specification compliant:DOCSIS 3.1
Hardware version:1.2
Software version:LG-RDK_6.9.35-2302.6
Cable MAC address:aaaaaaaaaaaaaa
Cable modem serial number:aaaaaaaaaaaaaa
System up time:1day(s)12h:1m:53s
Network access:Allowed
 
Here's the latest and live BQM:
 
 
@lee_r what are the next steps to get this resolved?