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Standard User Cloudane
(newbie) Wed 15-Jul-15 09:33:57
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DLM hates us, 62 down to 40 now, don't know what to do


[link to this post]
 
When we first got FTTC we were getting 62mbps.
Then a week or so later, interleaving kicked in (we suspect) and it went down to about 54.

At this point we should have left heck alone, but no one likes seeing their speed drop by huge chunks so we start looking into trying to diagnose it. Starting with the obvious, reseat cables, restart the modem. Bad idea, DLM hates that, down to 52.

Since then we've had various things over the year or so we've had FTTC like a couple of times the power has tripped in the house, problems we could only troubleshoot via restarts etc. 51, 50, 49, 47....

Having reached 47 or so recently I thought well we have the HG612 modem with stats enabled (got it off eBay early on to save "risking" the hack of the BT provided one) I'll try to get some monitoring going on LAN2 so I can at least get some figures for someone to look at. Set static IP to 192.168.1.100 as suggested, attempt to contact 192.168.1.1, nada. Maybe it was preconfigured on a different subnet but with 256 subnets to choose from even if it's definitely on a class C subnet, I'll never find it.

"Try a 10+ second press of the reset button to reset the configuration"
*sigh* that was a stupid thing to do. It didn't help (could one of the BT updates have re-locked the modem?). Now the IP profile is 40mbps. Might as well have just got 40/10 instead of 80/20!!

I just daren't touch it any more. At this rate we'll be back to ADSL speeds. On a call to Plusnet they say they'll "reset the IP profile" but that doesn't appear to do anything. Once the DLM managed to actually increase it back by about 2mbps after a few weeks, but usually once it goes down it doesn't go back up again.
They can send an engineer out, but if the engineer doesn't find a fault they say we'll get stung for a call-out charge, which is expensive.

I have read about the trick of powering off for at least 30 minutes at a time to try and appease DLM's iron fist of doom, but just don't know if I dare touch it even while doing that any more. crazy

Completely stumped. Any thoughts?
Standard User MHC
(sensei) Wed 15-Jul-15 10:15:01
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Re: DLM hates us, 62 down to 40 now, don't know what to do


[re: Cloudane] [link to this post]
 
Leave the line alone! With the original supplied modem installed go to https://mega.co.nz/#F!LdJFDIJL!e_E1twsIg2kTet8mPjrb4w selected the B030SP08 directory and download the WebGui version to your PC.

From https://huaweihg612hacking.wordpress.com/ get the unlocking instructions for the HG612.

Reset the second modem to factory defaults.

Have a good read of the thread at: http://forums.thinkbroadband.com/fibre/t/4398929-hua... It will give an insight into some issues I had.

Then with your PC and the previously hacked modem connected together, follow the instruction on how to load the firmware you have previously downloaded.

Check you can access the GUI and Telnet interfaces.

Once you are happy, power off the connected modem - do not disconnect the line for 10 to 20 seconds. And if you want the belt and braces approach, leave it off for 30 minutes.

Power up the new modem and let it fully boot, connect your router and wait a minute or two. Via te router, check you can access the modem GUI. Then connect the line and you should have access to the modem stats.


~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

M H C


taurus excreta cerebrum vincit
Standard User Cloudane
(newbie) Wed 15-Jul-15 10:47:18
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Re: DLM hates us, 62 down to 40 now, don't know what to do


[re: MHC] [link to this post]
 
Thanks for the instructions, will take a look.

Currently the hacked modem is connected, but we believe BTagent was running on it and has updated and re-locked the modem. Don't know whether to just leave it untouched, find the original modem and unlock that one instead to keep line interruptions to a bare minimum...

Meanwhile we've been onto plusnet (well, my dad has while I've been researching online) and apparently:
- Our exchange is full. No one else can sign up to FTTC in town. That might affect overall speed since the exchange is at max capacity
- They're going to raise it as a fault and get the line reset at the exchange, apparently this won't involve an engineer visit to the house they'll just reset it there. We'll be told within a few days when they can do it.

Going to have to try and get some kind of stats running ASAP then when I get home, it seems to me that if they just go resetting it without fixing any potential line problems it'll drop back down again and they'll be more reluctant to come out a second time...

Edited by Cloudane (Wed 15-Jul-15 10:48:24)


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Standard User Chrysalis
(legend) Wed 15-Jul-15 10:51:51
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Re: DLM hates us, 62 down to 40 now, don't know what to do


[re: Cloudane] [link to this post]
 
the 30 min advise is to help prevent the DLM from taking action not to undo previous action.

The most likely reason for your speed drop is either crosstalk increase (so may not be DLM at all) or line instability in relation to errored seconds.

Plusnet Fibre Unlimited BQM - IPv4 BQM - IPv6
Standard User Cloudane
(newbie) Wed 15-Jul-15 10:54:41
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Re: DLM hates us, 62 down to 40 now, don't know what to do


[re: Chrysalis] [link to this post]
 
I seem to recall having the stats working when we first started out and seeing LOTS of errors and actually watching them constantly count up. Will obviously need to confirm!
Standard User MHC
(sensei) Wed 15-Jul-15 11:21:48
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Re: DLM hates us, 62 down to 40 now, don't know what to do


[re: Cloudane] [link to this post]
 
That should be fine ... I can see why you are being cautious.

Just Power Off before you disconnect the line and wait 10-20 seconds. I believe by doing it that way the "Dying Gasp" message is sent and DLM will not react. There are some who don't believe the BT specs and claim it is false.

Give it the 30 minutes - just to be doubly cautious and ensure the modem is fully booted before connecting to the line.

If you can get to the GUI you can see the stats. If you install DSLStats you can leave it running to graph them too. Run them for a day and you may see specific bursts of noise which could be causing issues.


~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

M H C


taurus excreta cerebrum vincit
Standard User RobertoS
(elder) Wed 15-Jul-15 13:23:22
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Re: DLM hates us, 62 down to 40 now, don't know what to do


[re: Cloudane] [link to this post]
 
Once you have re-hacked it, and not connected to the phone line, you can disable the BT Agent if it is on. You need to make sure the hack you are applying is the one MHC links to. People sometimes think the SP10 is later, but it is 28SP10, whereas the correct one is 30SP08.

You can also reset the IP address of the modem to your router's subnet and a suitable number in the last position instead of the 100. The 100 I think was just to (hopefully) guarantee uniqueness.

I expect you know your router's LAN address. If that ends in 254 like mine, I suggest using 1 for the modem, and vice versa. Set the routers DHCP allocation range to exclude whatever you choose. Then connect modem LAN 2 to any spare Ethernet port on your router.

The indispensable man or woman passes from the scene, and what happens next is more or less the same thing as was happening before.
My broadband basic info/help site - www.robertos.me.uk. Domains, site and mail hosting - Tsohost.
Connection - Plusnet UnLim Fibre (FTTC). Sync 57840/12740kbps @ 600m. - BQM
Standard User Chrysalis
(legend) Wed 15-Jul-15 13:39:16
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Re: DLM hates us, 62 down to 40 now, don't know what to do


[re: RobertoS] [link to this post]
 
sadly the guy who did the new modded firmwares refused to disable btagent, apparently he had complaints the modded firmwares were not auto updating, I tried to explain those that use modded firmwares typically dont want them to auto update but he wouldnt have it.

So in telnet run these commands.

sh
killall -KILL start btagent

After these 2 commands btagent will remain down until a reboot of the hg612, but after a reboot they should be run again.

Plusnet Fibre Unlimited BQM - IPv4 BQM - IPv6

Edited by Chrysalis (Wed 15-Jul-15 13:39:57)

Standard User Cloudane
(newbie) Wed 15-Jul-15 19:20:18
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Re: DLM hates us, 62 down to 40 now, don't know what to do


[re: Cloudane] [link to this post]
 
Thanks guys for the pointers, the original modem is now the interface enabled version, connected to the main network and can be contacted.

It's been up about 10 minutes and has already seen 452 CRC errors down / 0 up, 4 FEC errors down / 1 up, and 111 HEC errors down / 0 up. I don't know how bad that is, it sounds a lot for a few minutes BUT in the last few minutes while I've been typing this it's not counted any more errors. Anyway will see how it fares over time...
Standard User RobertoS
(elder) Wed 15-Jul-15 19:49:35
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Re: DLM hates us, 62 down to 40 now, don't know what to do


[re: Cloudane] [link to this post]
 
Just as a point of interest, could you post the stats from telnetting in, like these:-
Welcome Visiting Huawei Home Gateway
Copyright by Huawei Technologies Co., Ltd.
Login:admin
Password:
ATP>sh

BusyBox v1.9.1 (2014-01-21 16:44:38 CST) built-in shell (ash)
Enter 'help' for a list of built-in commands.

# xdslcmd info --show
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 2000
Last initialization procedure status:   0
Max:    Upstream rate = 13873 Kbps, Downstream rate = 56320 Kbps
Bearer: 0, Upstream rate = 14040 Kbps, Downstream rate = 57676 Kbps
Bearer: 1, Upstream rate = 0 Kbps, Downstream rate = 0 Kbps
Link Power State:       L0
Mode:                   VDSL2 Annex B
VDSL2 Profile:          Profile 17a
TPS-TC:                 PTM Mode(0x0)
Trellis:                U:ON /D:ON
Line Status:            No Defect
Training Status:        Showtime
                Down            Up
SNR (dB):        6.1             6.1
Attn(dB):        19.8            0.0
Pwr(dBm):        13.5            7.4
                        VDSL2 framing
                        Bearer 0
MSGc:           -6              26
B:              243             237
M:              1               1
T:              0               61
R:              10              16
S:              0.1347          0.5391
L:              15084           3769
D:              8               1
I:              254             127
N:              254             254
Q:              8               0
V:              0               0
RxQueue:                45              0
TxQueue:                15              0
G.INP Framing:          18              0
G.INP lookback:         15              0
RRC bits:               0               24
                        Bearer 1
MSGc:           122             -6
B:              0               0
M:              2               0
T:              2               0
R:              16              0
S:              8.0000          0.0000
L:              32              0
D:              1               0
I:              32              0
N:              32              0
Q:              0               0
V:              0               0
RxQueue:                0               0
TxQueue:                0               0
G.INP Framing:          0               0
G.INP lookback:         0               0
RRC bits:               0               0
                        Counters
                        Bearer 0
OHF:            0               1650263
OHFErr:         0               0
RS:             401157968               1840428
RSCorr:         366             4
RSUnCorr:       0               0
                        Bearer 1
OHF:            844451          0
OHFErr:         0               0
RS:             6755112         0
RSCorr:         0               0
RSUnCorr:       0               0

                        Retransmit Counters
rtx_tx:         229794976               0
rtx_c:          1449            0
rtx_uc:         0               0

                        G.INP Counters
LEFTRS:         14              0
minEFTR:        57684           0
errFreeBits:    918990593               0

                        Bearer 0
HEC:            0               0
OCD:            0               0
LCD:            0               0
Total Cells:    1504421547              0
Data Cells:     2125205         0
Drop Cells:     0
Bit Errors:     0               0

                        Bearer 1
HEC:            0               0
OCD:            0               0
LCD:            0               0
Total Cells:    0               0
Data Cells:     0               0
Drop Cells:     0
Bit Errors:     0               0

ES:             0               3
SES:            0               0
UAS:            107             107
AS:             13564

                        Bearer 0
INP:            47.00           0.00
INPRein:        0.00            0.00
delay:          0               0
PER:            0.00            8.25
OR:             0.01            31.01
AgR:            57735.03        14071.36

                        Bearer 1
INP:            2.00            0.00
INPRein:        2.00            0.00
delay:          0               0
PER:            16.06           0.01
OR:             63.75           0.01
AgR:            63.75   0.01

Bitswap:        9859/9859               68/68

#


The indispensable man or woman passes from the scene, and what happens next is more or less the same thing as was happening before.
My broadband basic info/help site - www.robertos.me.uk. Domains, site and mail hosting - Tsohost.
Connection - Plusnet UnLim Fibre (FTTC). Sync 57840/12740kbps @ 600m. - BQM
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