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Author Topic: Huawei Echolife HG612 - Interleaving level  (Read 3787 times)

.Griff.

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Huawei Echolife HG612 - Interleaving level
« on: April 13, 2012, 01:05:47 PM »

Can someone, probably Paul, remind me which reading refers to the level/depth of Interleaving?


# xdslcmd info --show
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 0
Max:    Upstream rate = 31796 Kbps, Downstream rate = 94348 Kbps
Path:   0, Upstream rate = 10000 Kbps, Downstream rate = 39999 Kbps

Link Power State:       L0
Mode:                   VDSL2 Annex B
VDSL2 Profile:          Profile 17a
TPS-TC:                 PTM Mode
Trellis:                U:ON /D:ON
Line Status:            No Defect
Training Status:        Showtime
                Down            Up
SNR (dB):        22.1            20.7
Attn(dB):        0.0             0.0
Pwr(dBm):        12.7            3.8
                        VDSL2 framing
                        Path 0
B:              240             239
M:              1               1
T:              64              35
R:              14              0
S:              0.1917          0.7622
L:              10644           2519
D:              19              1
I:              255             120
N:              255             240

I've got a feel it's "D" but I can't remember for sure.
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Bald_Eagle1

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Re: Huawei Echolife HG612 - Interleaving level
« Reply #1 on: April 13, 2012, 01:14:45 PM »

Hi Griff,

It is indeed "D" & I see your value is still 19 DS (LOW) & 1 US (OFF).

Combined with this, you will no doubt see non-zero values for DS INP (Impulse Noise Protection) and/or delay.

Cheers,

Paul.

« Last Edit: April 13, 2012, 01:16:46 PM by Bald_Eagle1 »
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.Griff.

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Re: Huawei Echolife HG612 - Interleaving level
« Reply #2 on: April 13, 2012, 01:19:57 PM »

Cheers Paul. The reason I wanted to check is this - (Yesterdays TBBQM)

(Graph removed as the IP address it's monitoring is no longer assigned to me)

The first thing people would assume, including myself, is that's the result of the DLM increasing interleaving on my line but the modem confirms it's not changed. Perhaps it's an ongoing routing issue?!?
« Last Edit: April 14, 2012, 10:14:54 PM by .Griff. »
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Bald_Eagle1

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Re: Huawei Echolife HG612 - Interleaving level
« Reply #3 on: April 13, 2012, 01:27:18 PM »

Have INP and/or delay changed (increased)?

These were the values from your 4th February log:-

         Path 0
INP:      0.00      0.00
delay:      1.00      0.00
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.Griff.

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Re: Huawei Echolife HG612 - Interleaving level
« Reply #4 on: April 13, 2012, 01:31:58 PM »


                        Path 0
INP:            0.00            0.00
PER:            3.06            13.33
delay:          1.00            0.00
OR:             83.48           37.18
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Bald_Eagle1

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Re: Huawei Echolife HG612 - Interleaving level
« Reply #5 on: April 13, 2012, 01:48:21 PM »


                        Path 0
INP:            0.00            0.00
PER:            3.06            13.33
delay:          1.00            0.00
OR:             83.48           37.18

All identical to 4th Feb!!

PER = Packets in ERror, but I don't know what OR: stands for. It might/might not be relevant?
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.Griff.

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Re: Huawei Echolife HG612 - Interleaving level
« Reply #6 on: April 13, 2012, 01:54:05 PM »

Do you therefore think that the distinct "step" increase in latency is a change in routing in that case?
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Bald_Eagle1

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Re: Huawei Echolife HG612 - Interleaving level
« Reply #7 on: April 13, 2012, 02:06:28 PM »

TBH Griff, I have no idea.

I do know that BT has recently been carrying out some planned Network Maintenance:-

When's this work happening?
Early tomorrow morning, 12th April.

What does it affect?
Broadband connectivity.

How long will it take?
Up to six hours.

What does the work involve?
We've received notification from our suppliers about maintenance work
that is scheduled to take place in the London Colindale region early on
Thursday morning. This may affect users nationwide.

Am I likely to notice the work?
Yes, there's a chance that you may be disconnected from the internet
for a period of time during the maintenance window.


I suppose it's possible that your PPP session was disconnected & you ended up on a different gateway (slower/more congested).

I presume your modem has remained in sync throughout.

Maybe a router disconnection/reconnection would find a quicker/less congested gateway & new IP Address?

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.Griff.

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Re: Huawei Echolife HG612 - Interleaving level
« Reply #8 on: April 13, 2012, 02:08:03 PM »

TBH Griff, I have no idea.

I do know that BT has recently been carrying out some planned Network Maintenance:-

When's this work happening?
Early tomorrow morning, 12th April.

What does it affect?
Broadband connectivity.

How long will it take?
Up to six hours.

What does the work involve?
We've received notification from our suppliers about maintenance work
that is scheduled to take place in the London Colindale region early on
Thursday morning. This may affect users nationwide.

Am I likely to notice the work?
Yes, there's a chance that you may be disconnected from the internet
for a period of time during the maintenance window.


I suppose it's possible that your PPP session was disconnected & you ended up on a different gateway (slower/more congested).

I presume your modem has remained in sync throughout.

Maybe a router disconnection/reconnection would find a quicker/less congested gateway & new IP Address?

Modem did indeed remain in sync throughout. I'll reset the router and create a new PPP session.
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kitz

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Re: Huawei Echolife HG612 - Interleaving level
« Reply #9 on: April 13, 2012, 05:32:01 PM »

>>> I suppose it's possible that your PPP session was disconnected & you ended up on a different gateway (slower/more congested).

Most 'normal' people wont notice something like that.. but the more astute users (and avid gamers) do.

BT's routing can sometimes be weird...   there have been times in the past when I was on a BTw line I wondered if I was routed from here then back up to Glasgow ane then down to London because of jumps in latency between the RAS and destination.  You used to be able to ping the RAS, but I dont think you can now..  this used to be a pretty helpful diagnostic, because it seemed to happen from my exchange a couple of times a year.

For some reason the graphs gone now.. but I did see it earlier...  the latency looked pretty static and from what I can remember, not really like anything what you'd expect with congestion where it tends to spike all over the show. 

If interleaving/error correction on the DLM isnt the cause, then it is possible to be a change of routing :/

If so its not always easy to pick up new routing.. you can try leaving the router off overnight, but it can sometimes be the backhaul routing between the exchange and RAS, in which case you may be stuck with it for a few days/weeks :(

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.Griff.

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Re: Huawei Echolife HG612 - Interleaving level
« Reply #10 on: April 13, 2012, 05:50:03 PM »

Cheers for the comments Kitz. I deleted the TBBQM as the IP address was no longer assigned to me.

As you rightly pointed out the immediate "stepped" increase in latency doesn't resemble the upward curve over a time period you'd expect to see caused by congestion so we can rule that out of the equation. Also the modem confirms that the depth of interleaving hasn't changed in months so we can also rule out the DLM making any changes in that respect.

I guess all that's left is a change in routing. I've left the router off for a couple of hours but it's made little to no difference to the latency so I'll just have to watch the new monitor over the next few days and hope it resolves itself.
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Darren

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Re: Huawei Echolife HG612 - Interleaving level
« Reply #11 on: April 14, 2012, 07:21:54 PM »

Hi all, some of you may recognise me as Croftie from TBB (using me real name here, why not).

I didn't see your BQM Griff, but I beleive I have the same problem. Within the last few days pings have doubled but the modem confirms interleaving is completely off.

Running a tracert shows the ping is normal untill hop 4 where it doubles, I beleive at that point it is still within BT's network. I have just turned the hub off for 5 mins but it's made no difference.

Does your tracert look simular to mine?

Quote
C:\Documents and Settings\Administrator>tracert bbc.co.uk

Tracing route to bbc.co.uk [212.58.241.131]
over a maximum of 30 hops:

  1    <1 ms    <1 ms    <1 ms  192.168.1.254
  2     6 ms     6 ms     6 ms  213.120.155.227
  3     6 ms     6 ms     6 ms  213.120.155.142
  4    13 ms    13 ms    13 ms  213.120.161.110
  5    13 ms    13 ms    13 ms  217.32.26.82
  6    13 ms    13 ms    13 ms  217.32.26.178
  7    13 ms    13 ms    13 ms  acc1-10Gige-0-5-0-4.bm.21cn-ipp.bt.net [109.159.248.96]
  8    24 ms    23 ms    23 ms  core1-te0-2-5-0.ealing.ukcore.bt.net [109.159.248.0]
  9    23 ms    23 ms    22 ms  peer2-xe2-0-0.telehouse.ukcore.bt.net [109.159.254.106]
 10    23 ms    23 ms    22 ms  194.74.65.42
 11     *        *        *     Request timed out.
 12    22 ms    20 ms    21 ms  ae1.er01.rbsov.bbc.co.uk [132.185.254.46]
 13    21 ms    20 ms    20 ms  132.185.255.134
 14    23 ms    23 ms    22 ms  212.58.241.131

Trace complete.

Compared to what it was, this is a saved result from last month but it looked simular last week.

Quote
C:\Documents and Settings\Administrator>tracert bbc.co.uk

Tracing route to bbc.co.uk [212.58.241.131]
over a maximum of 30 hops:

  1    <1 ms    <1 ms    <1 ms  192.168.1.254
  2     5 ms     6 ms     6 ms  213.120.155.227
  3     6 ms     6 ms     6 ms  213.120.155.158
  4     7 ms     6 ms     6 ms  213.120.161.106
  5     6 ms     6 ms     6 ms  217.32.26.58
  6     7 ms     7 ms     6 ms  217.32.26.182
  7     7 ms     6 ms     6 ms  acc2-10GigE-0-0-0-4.bm.21cn-ipp.bt.net [109.159.248.194]
  8    15 ms    11 ms    11 ms  core2-te0-2-5-0.ealing.ukcore.bt.net [109.159.248.130]
  9    11 ms    11 ms    11 ms  peer2-xe10-1-0.telehouse.ukcore.bt.net [109.159.254.116]
 10    11 ms    11 ms    11 ms  194.74.65.42
 11     *        *        *     Request timed out.
 12    11 ms    11 ms    11 ms  ae1.er01.rbsov.bbc.co.uk [132.185.254.46]
 13    12 ms    12 ms    12 ms  132.185.255.134
 14    11 ms    11 ms    11 ms  212.58.241.131

Trace complete.

Cheers
Darren
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.Griff.

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Re: Huawei Echolife HG612 - Interleaving level
« Reply #12 on: April 14, 2012, 10:01:14 PM »

My results to BBC.

Quote
C:\Users\Griff>tracert bbc.co.uk

Tracing route to bbc.co.uk [212.58.241.131]
over a maximum of 30 hops:

  1    <1 ms    <1 ms    <1 ms  192.168.1.2
  2     5 ms     6 ms     6 ms  213.120.155.227
  3     6 ms     6 ms     6 ms  213.120.155.142
  4    14 ms    13 ms    13 ms  213.120.161.22
  5    13 ms    13 ms    13 ms  217.32.26.30
  6    13 ms    13 ms    13 ms  217.32.26.178
  7    13 ms    13 ms    13 ms  acc1-10GigE-0-1-0-5.bm.21cn-ipp.bt.net [109.159.
248.90]
  8    26 ms    23 ms    24 ms  core2-te-0-15-0-7.ilford.ukcore.bt.net [109.159.
248.22]
  9    19 ms    19 ms    18 ms  peer2-xe0-1-0.telehouse.ukcore.bt.net [109.159.2
54.138]
 10    21 ms    21 ms    60 ms  194.74.65.42
 11     *        *        *     Request timed out.
 12    19 ms    70 ms    20 ms  ae1.er01.rbsov.bbc.co.uk [132.185.254.46]
 13    19 ms    19 ms    18 ms  132.185.255.134
 14    19 ms    18 ms    18 ms  212.58.241.131

Trace complete.

I was getting 13ms pings to BBC before but I don't have a traceroute saved I can quote. Mine seems to be business as usual until it gets to ukcore.bt.net where latency doubles. I note yours does the same when it reaches ukcore.bt.net.

It's annoying as it's been 48 hours now with no sign of it resolving itself. I've restarted the router a few times to try and force it onto a different IP but the latency remains higher than usual.
« Last Edit: April 14, 2012, 10:05:57 PM by .Griff. »
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Darren

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Re: Huawei Echolife HG612 - Interleaving level
« Reply #13 on: April 15, 2012, 05:05:15 PM »

We are definatly seeing the same issue, I have reported it on the bt forum, if you could post over there that your experiencing the same it would probably help get it resolved sooner.

http://community.bt.com/t5/BT-Infinity/Latency-doubled-from-hop-4-Interleaving-is-off/td-p/473339

I agree it is annoying, I was going to order the speed upgrade this weekend but don't really want to untill this is resolved. Anyway, hopefully we can get it resolved soon.
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.Griff.

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Re: Huawei Echolife HG612 - Interleaving level
« Reply #14 on: April 15, 2012, 06:22:31 PM »

I would love to post on the BT forum Darren but unfortunately that forum is a complete waste of time. Even before I checked I knew that the user "Webby" would ignore any rational information you bring to the table and simply insist all is well.

For whatever reason he sees himself as self appointed expert on all matters and ardent defender of BT. Any time I've raised genuine issues on that forum he has spammed the thread arguing that BT are perfect and nobody has any genuine reason to complain.

I just find it easier and less stress to avoid that forum entirely as a result.
« Last Edit: April 15, 2012, 06:26:42 PM by .Griff. »
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