Data on HH2 Achieving Stable Line Rate & Switching...

In the thread "Re: Is HomeHub designed to be on all the time? No off switch?" the question was raised about properly switching off the router at the mains.   I have collected data over the past few weeks which may give some guidance on this action, plus the changes as my line stabilises.
I pointed out in this thread that when entering the HH through the browser the Home Page opens by default.   On this page there is a Connect/Disconnect button as the first listed item, whether this is also available on the HH type A or HH3 I don't know, mine id Type B.   There are a few mentions of this button from a Forum search, but no clear reason for its function (not in the User Manual).    I have found it in, for example, the threads,   "Home Hub 2.0 wireless internet connection issues" in June 2010 & a clear mention by geoff93 in thread "Re: Sudden Drop In Speed (Again)" 1 Mar 2011; "Re: Broadband speed dropped from 10Mb to 250K overnight" on 24 Feb 2011.
In many threads the point is made that the HH should be left on continuously to keep the line stable as the DSLAM in the exchange checks the line at frequent intervals (about every 7-8 sec it seems on my line).   I assume that using this Disconnect Button provides a logical warning to the exchange circuits that the line has deliberately been removed - it would be nice if the Forum Moderators could confirm if this function is in the design specification of the software and how the exchange system is expected to respond.
Following the four visits by OpenReach in Feb/Mar to sort my line arranged by the Forum Moderators (they were always most helpful when contacted) I left the HH on continuously from 21 Mar until 13 May with the following results which may be of interest
DATE    D:HR:MIN     DOWN        UP        MARGIN
21 Mar   0, 0, 5          9,728         976      12.9
                0, 3, 54        16,841       1,078   5.3
23 Mar      0, 20, 59       16,841    1,078   6.1
24 Mar        0, 13,41        16,272       1,110    6.9
25 Mar        1, 1, 2          16,696       1,106     5.7
26 Mar        0, 16, 46        16,529      1,078    6.6
27 Mar        1, 19, 4        16,529        1,078    6.7
2 Apr          3, 13, 51       15,228       1,078    8.1
3 Apr          0, 4, 21        12,702        1,078    12.3
4 Apr    0, 5, 2        13,105         1,078     11.9
5 Apr       0, 3, 22        14,336        1,078    9.0
6 Apr       1, 7, 55        14,336        1,078    8.7
13 May        0, 0, 4        14,336        1,078    7.6
within this whole period I still had random disconnects/resets.
From 13 May I started to now run the HH2 with the power switched off at night (usually), until I decide to switch on the PC the next day, or later.
13 May        0, 7, 4        14,336        1,078    8.9
14 May        0, 0, 2        14,336        1,078    8.3
16 May        0, 0, 1        14,336        1,078    7.5
17 May        0, 0, 12        14,336        1,078    7.9
18 May        0, 0, 1        14,336        1,110    7.9
19 May        0, 9, 55        14,336        1,078    9.0
20 May        0, 0, 59        14,336        1,110    7.6
22 May        0, 14, 53        14,336        1,078    8.7
23 May        0, 0, 31        14,336        1,078    7.8
24 May        0, 0, 1        14,336        1,078    8.0
25 May        0, 2, 45        14,336        1,110    8.2
26 May        0, 1, 20        14,336        1,078    8.8
28 May        0, 4, 7        14,336        1,078    9.1
29 May        0, 0, 8        14,336        1,106    8.1
30 May        0, 7, 51        14,336        1,078    8.9
It seems that the line took 16 days (to 5 April) to stabilise at 14,336/1,078.   The following 15 days after 13 May logically disconnecting/connecting seems not to disturb the line rate.   However, I still get random disconnects/resets and also occasional disconnects when accessing the HH2.
The HH2 is running software 4.7.5.1.83.3.18, when I received it back in October it had ver ...83.3.5. The line distance to the Crowthorne exchange is ca 1000m.
Rodney Fry

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Very slow download speed though modem line rate no...

Hi
I recently noticed (today, 31st December) that our download speed had dropped very low, to approx 0.5Mbps. The upload speed is normal, approx 1Mbps. The modem line rate is however normal (8Mbps dowm, 1Mbps up). I have checked the download speed using http://speedtest.btwholesale.com/. I am at postcode SK237FN and have had consistently reliable download speeds for several years, 5-7Mbps.
Please help!
I already tried rebooting my router but this has not improved matters.
Thanks...
Test Result
Best Effort Test: -provides background information.
Download Speed
0.59 Mbps
0 Mbps
7.15 Mbps
Max Achievable Speed
Download speedachieved during the test was - 0.59 Mbps
For your connection, the acceptable range of speeds is 2 Mbps-7.15 Mbps.
IP Profile for your line is - 7.2 Mbps
Solved!
Go to Solution.

Hi
Thanks for your quick reply.
I don't use a BT "home hub"; I use a Billion router, ADSL status below.
The speedtest was performed using a wired connection.
BR
Mike
Mode
ADSL_2plus
Traffic Type
ATM
Status
Up
Link Power State
L0
Downstream
Upstream
Line Coding (Trellis)
On
On
SNR Margin (dB)
4.2
6.3
Attenuation (dB)
33.0
15.9
Output Power (dBm)
0.0
12.8
Attainable Rate (Kbps)
9184
1056
Rate (Kbps)
7438
1052
MSGc (# of bytes in overhead channel message)
59
10
B (# of bytes in Mux Data Frame)
232
150
M (# of Mux Data Frames in FEC Data Frame)
1
1
T (Mux Data Frames over sync bytes)
1
1
R (# of check bytes in FEC Data Frame)
16
0
S (ratio of FEC over PMD Data Frame length)
0.9979
4.5584
L (# of bits in PMD Data Frame)
1996
265
D (interleaver depth)
32
1
Delay (msec)
8
1
INP (DMT symbol)
1.00
0.00
Super Frames
364092
322883
Super Frame Errors
63
0
RS Words
23665906
882081
RS Correctable Errors
1466757
0
RS Uncorrectable Errors
711
0
HEC Errors
702
0
OCD Errors
0
0
LCD Errors
0
0
Total Cells
103594167
14634218
Data Cells
24717224
1770221
Bit Errors
0
0
Total ES
14
0
Total SES
1
0
Total UAS
76
76

Line rate always changing / Hub resetting itself

Hello
For the past 6 or 7 months we have seen dramatic fluctuations in our Broadband download speed. This change always comes about as a result of our our Home Hub 4 seemingly restting itself: we have normal internet use with a blue light on, but then the Hub will flash orange for a while and come back with a blue light. There is no pattern regarding the time of day; it's completely random.
I've been informed that a resetting connection will only inform the exchange that there is a problem, thus prompting the "IP Profile to be reduced" to make things stable. Surely then this isn't supposed to be happening?
There was a time when we would always get around 2.7 - 3.3 Mbps line rate, which is the best we could expect for our area and the distance from the exchange. The download speeds associated with that were good enough for us, but we can never seem to get that now.
The Event Log will report the process described above as: 'Failed to Resolve Host' and, once the connection is re-established, the line rate will usually be lower than it was before. As an example, a line rate of approx 2.3 Mbps will drop to about 1.3 Mbps. Sometimes this process will return a slightly higher line rate!
This happens approximately once every day, but the line rate is never the decent 3 Mbps we used to get...Sometimes I get lucky by manually resetting the Hub and the line rate will be 2.5 Mbps...but it isn't long before it resets itself and, again, we have about 1.2 Mbps.
Current event log:
12:24:27, 18 Sep.
( 97.940000) DSL noise margin: 5.90 dB upstream, 6.00 dB downstream
12:24:26, 18 Sep.
( 96.910000) DSL line rate: 934 Kbps upstream, 1315 Kbps downstream
12:24:11, 18 Sep.
( 81.000000) CWMP: session closed due to error: Could not resolve host
In the last month there was a small amount of noise on the telephone line (we were looking into it but it appears to have gone), but this line rate fluctuation started long before then anyway. Phone call with the Telephone department team told me there appears to be no problem with the line. We have also had 3 different Hubs during that time, so it isn't a Hub issue. Filters in place and Master Socket is in use. Using the test socket yeilds same problems.
Further questions if anyone is able to answer them:
Besides interference from noise, is there a good reason for the Hub to go through this process and force lower speeds upon us? Is the exchange throttling us or something?
For a period last year we were getting 380 kB/s in a speed test and that was fine to use because it matches the line capabilities that we have always been quoted. I don't understand why we can't have a similar speed now. We don't even get > 300kB/s during off peak times. Is it normal for our DL speed to now be always be about 180 kB/s? We were told during our recent re-contract that there is no longer any capping.

presumbly the previous stats were from the test socket as new stats are just the same
any exchnage problems http://usertools.plus.net/exchanges/mso.php
http://usertools.plus.net/exchanges/?
http://btbusiness.custhelp.com/app/service_status
http://bt.custhelp.com/app/answers/detail/a_id/15036
http://community.plus.net/exchange-information/
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DSL Line Rate Q

just wondering what determines your line rate, ive come from having Virgin Media fibre optic, i know very little about ADSL
my connection is currently:
DSL line rate: 912 Kbps upstream, 8375 Kbps downstream
DSL noise margin: 5.90 dB upstream, 6.10 dB downstream
is it ever likely to change ?

on Exchange SAINT HELENS is served by Cabinet 20
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FTTC Range A (Clean)
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Line rate is higher than attainable rate!

I've been on Infinity for 3 or 4 months now and have had consistently a BT profile of 72.3 to 72.86Mbps, the changes occuring after modem resets or power cycles. Attainable rate (via the standard modem hack) has been 75272 to 76184kbps. Line rate has been 500 to 900 kbps below the attainable rate.
A few days ago we had a major power cut in the local area including here, lasting for several hours and afterwards, everything worked as normal. Just now I decided to check my BT profile and modem stats, just out of interest, as you do. The results are interesting - my profile has gone up to 75.73/20.00 and the modem stats are what I thought was impossible - line rate is much higher than the attainable rate! Stats are below.
Line is stable and needless to say I am delighted - I am now getting speedtest d/l results 3Mbps higher than ever before (74Mbps), but can anyone explain how line rate can be above attainable rate?
Mode    VDSL2
Traffic type    PTM
DSL synchronization status    Up
DSL up time    272927
   Line Status
    Downstream    Upstream
Attainable rate (kbit/s)   75948   26179
SNR margin (dB)        5.4      15.1
Line attenuation (dB)      0          0
Output power (dBmV)         13      3.8
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      Downstream    Upstream
Line rate (kbit/s)   78235    20000
CRC errors      0             0
FEC errors               981       178
HEC errors             2182    0

You must have a good line and probably have the cabinet in your front room!
Who knows! I wouldn't say it would be impossible to hit pass your attainable rate, i would only take these as estimates as much as everything else.
It was like when i was on copper, thinking my line could only sync at 4MB, but constantly synced at around 6.5-7MB which was good for me! lol!
If you want to say thanks for a helpful answer, please click on the Ratings star on the left-hand side If the the reply answers your question then please mark as ’Mark as Accepted Solution

WS-X6704-10GE at line rate ?

Hi..
Any idea if the 4 port 10GE card WS-X6704-10GE runs at line rate for each port ? Can we get approx 40Gbps throughput out of this card ?
Eng Wee

Hi Eng wee,
The 4 port 10 Gigabit Ethernet interface module is CEF720 based and communicate using 40-Gbps connections to the integrated 720-Gbps switch fabric of the Supervisor Engine 720.
http://www.cisco.com/en/US/products/hw/switches/ps708/products_data_sheet09186a00801dce34.html
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Decent line rate, throughput not consistent!

Hi folks,
On Wednesday I upgraded to the Broadband unlimited package, and with that got a Homehub 4.
Router setup went fine and broadband connected.
It has synced at a good rate but when conducting speed tests, the results range from a download of 15mb right down to the lowest Ive seen of 0.2mb. The results can be quite different from two tests done straight after eachother. There is no consistency and seems to be jumping all over the place.
The upload results remain around the 1mb mark.
My previous hub was a homehub 1 and although the last download sync I remember was 3.2mb, it was at least steady and I had no problems with it, besides the occasional reboot required.
Sync stats below:
Connection time:
0 days, 01:58:08
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Additional Information:
Upstream Rate IP profile on your line is - 0.83 Mbps
Looking around some of the other posts on the forum with similar issues, I suspect this could be an issue for a mod to sort out?
Thanks for reading

Speed check @ 21:15
Download speed achieved during the test was - 14.83 Mbps
For your connection, the acceptable range of speeds is 4 Mbps-21 Mbps.
IP Profile for your line is - 15.21 Mbps
Speed tests done today seem to have stabilised around the 14-15mb mark.
I noticed that my router reset this morning, with the noise increasing to 6db, not sure if this would help stabilise the throughput?
04:13:59, 07 Dec.
(43225.730000) DSL noise margin: 5.90 dB upstream, 6.00 dB downstream
04:13:58, 07 Dec.
(43224.700000) DSL line rate: 1147 Kbps upstream, 17240 Kbps downstream
I'll keep an eye on it over the next couple of days.

Delivery date determination in the schedule lines

Hi,
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How to Restrict Single Delivery Date for PO with Multiple Line Items

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Exception occured during invocation of JCA binding ORA-01403: no data found ORA-06512: at line 1

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What is line item datas,how can u check line item in Infocube?

Hi friends,
what is line item datas,how can u check line item in Infocube?

hi konda,
line item data
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