Below are my Hub 5 Stats.....lots of Pre RS Errors....what could be causing it ?Cable Modem StatusItem Status CommentsAcquired Downstream Channel(Hz)330000000LockedRanged Upstream Channel(Hz)46200000RangedProvisioning StateOnlineOperational

Hi javedsaleem, Thanks for coming back to us on this one. I'm sorry to hear no one has been able to explain the RS errors for you. A normal connection usually shows a steady spattering of pre-RS errors but there should only be a tiny number of post-RS errors. To explain this further, when the hub reboots, the first moments are quite chaotic and messy. Data is pouring in, but the modem hasn't yet synced up with the CMTS on our end. As the synchronisation is taking place, at the same time, corrupt data occurs hence the errors. If damaged packets of data arrive at your Hub, it will automatically try and repair them. If that's successful, the pre-RS error counter will go up. When it fails, the post-RS error counter will go up. If your post-RS error count keeps going up it's likely a sign of an issue with your connection which is why we run the checks that we do. Looking at your logs, all the packets are being repaired which is why you have a 0 post-RS error count. When there has been an uptime of over a few days it's worth resetting the counter to 0 by rebooting the hub and then checking periodically to see if the number rises. I have checked all aspects of your network today and there is nothing that I am seeing I'm afraid. Keep us posted on if you notice the post-RS error count increasing or if you have any further issues. Thanks,

javedsaleem

On our wavelength

3 years ago

Solved

Broadband Status

Below are my Hub 5 Stats.....lots of Pre RS Errors....what could be causing it ?

Cable Modem StatusItem Status Comments

Acquired Downstream Channel(Hz)	330000000	Locked
Ranged Upstream Channel(Hz)	46200000	Ranged
Provisioning State	Online	Operational

Kath_P
2 years ago
Hi javedsaleem,

Thanks for coming back to us on this one.

I'm sorry to hear no one has been able to explain the RS errors for you. A normal connection usually shows a steady spattering of pre-RS errors but there should only be a tiny number of post-RS errors.

To explain this further, when the hub reboots, the first moments are quite chaotic and messy. Data is pouring in, but the modem hasn't yet synced up with the CMTS on our end. As the synchronisation is taking place, at the same time, corrupt data occurs hence the errors.

If damaged packets of data arrive at your Hub, it will automatically try and repair them. If that's successful, the pre-RS error counter will go up. When it fails, the post-RS error counter will go up. If your post-RS error count keeps going up it's likely a sign of an issue with your connection which is why we run the checks that we do. Looking at your logs, all the packets are being repaired which is why you have a 0 post-RS error count.

When there has been an uptime of over a few days it's worth resetting the counter to 0 by rebooting the hub and then checking periodically to see if the number rises.

I have checked all aspects of your network today and there is nothing that I am seeing I'm afraid.

Keep us posted on if you notice the post-RS error count increasing or if you have any further issues.

Thanks,

javedsaleem

On our wavelength

3 years ago

Downstream bonded channels

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

1	330000000	-1.7	41	QAM 256	25
2	138000000	0.6	42	QAM 256	1
3	146000000	0.6	42	QAM 256	2
4	154000000	0.6	42	QAM 256	3
5	162000000	0.5	42	QAM 256	4
6	170000000	0.4	42	QAM 256	5
7	178000000	0.2	42	QAM 256	6
8	186000000	0.1	42	QAM 256	7
9	194000000	0.1	42	QAM 256	8
10	202000000	0	42	QAM 256	9
11	210000000	0.1	42	QAM 256	10
12	218000000	0	42	QAM 256	11
13	226000000	0.2	41	QAM 256	12
14	234000000	0.5	41	QAM 256	13
15	242000000	0.7	41	QAM 256	14
16	250000000	0.8	41	QAM 256	15
17	258000000	0.8	41	QAM 256	16
18	266000000	0.7	41	QAM 256	17
19	274000000	0.8	41	QAM 256	18
20	282000000	0.9	41	QAM 256	19
21	290000000	0.9	41	QAM 256	20
22	298000000	-1.1	41	QAM 256	21
23	306000000	-1.3	41	QAM 256	22
24	314000000	-1.2	41	QAM 256	23
25	322000000	-1.5	41	QAM 256	24
26	338000000	-1.7	40	QAM 256	26
27	346000000	-1.8	40	QAM 256	27
28	354000000	-1.9	40	QAM 256	28
29	362000000	-1.8	41	QAM 256	29
30	370000000	-1.8	40	QAM 256	30
31	378000000	-1.7	40	QAM 256	31

javedsaleem

On our wavelength

3 years ago

Downstream bonded channels

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

1	Locked	41	9
2	Locked	42	100
3	Locked	42	176
4	Locked	42	222
5	Locked	42	178
6	Locked	42	400
7	Locked	42	206
8	Locked	42	177
9	Locked	42	61
10	Locked	42	26
11	Locked	42	58
12	Locked	42	40
13	Locked	41	13
14	Locked	41	2
15	Locked	41	22
16	Locked	41	36
17	Locked	41	23
18	Locked	41	6
19	Locked	41	22
20	Locked	41	8
21	Locked	41	21
22	Locked	41	35
23	Locked	41	3
24	Locked	41	13
25	Locked	41	7
26	Locked	40	3
27	Locked	40	21
28	Locked	40	29
29	Locked	41	10
30	Locked	40	14
31	Locked	40	33

javedsaleem
On our wavelength
3 years ago
Upstream bonded channels
Channel Frequency (Hz) Power (dBmV) Symbol Rate (ksps) Modulation Channel ID
0 46200000 34.3 5120 QAM 64 1
1 39400000 34.8 5120 QAM 64 2
2 32600000 34.3 5120 QAM 64 3
3 25800000 33.8 5120 QAM 64 4
Upstream bonded channels
Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts
0 ATDMA 0 0 0 0
1 ATDMA 0 0 0 0
2 ATDMA 0 0 0 0
3 ATDMA 0 0 0 0

javedsaleem
On our wavelength
2 years ago
Well .....

After complaining to VM for months and telling them it was the Hub 5 or the Cables, finally an Engineer came.

He was one that had come previously, but not been able to diagnose the fault.

He tested the cables all the way back to the Street Cabinet.....all was well

Unsure of what to.do, I suggested he replace the Hub 5

Bingo.....problem solved
javedsaleem
On our wavelength
2 years ago
Above is a pic of the BQM before the Hub 5 was changed
javedsaleem
On our wavelength
2 years ago
Below is a pic of the BQM, AFTER the Hub 5 was changed, at my insistence
javedsaleem
On our wavelength
2 years ago
If VM had listened to me before, I would have not had to endure months of poor broadband connectivity
- javedsaleem
  On our wavelength
  2 years ago
  
  The router status page has changed.....it's now shows 3.1 upstream channels
  
  Can someone explain what has changed ?
  - javedsaleem
    On our wavelength
    2 years ago
    My broadband is working considerably better since the router was changed and also because my contract renewal is within a few months !!

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0	46200000	34.3	5120	QAM 64	1
1	39400000	34.8	5120	QAM 64	2
2	32600000	34.3	5120	QAM 64	3
3	25800000	33.8	5120	QAM 64	4

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