Recovery profile

I have had my house re-built from the ground up over the last 5 months and due to the builders desire for broadband to get a (wifi) phoe signal the router was on most of the time. Obviously during the first/second fix period there was a lot of on/off events and my rate dropped from 74 mbps to 20!

After 5 days of no events it recovered to 22400 and then the next day (yesterday) to 25000. This morning there was another forced change but no rate change (I suspect INP improved).

Is there a set recovery process? I'm assuming it will recover daily from now on.

In reply to a post by darrellr:

Is there a set recovery process? I'm assuming it will recover daily from now on.

WAIT and TIME

That speed change seems drastic and outside DLMs usual...

Do you have line stats?

May sound drastic but with builders there the disconnects, as suggested, may have been frequent however what is more likely is that the RFI/EMI from the tools will have driven a lot of disconnects and a very high noise floor at times.

I know it will take time and I'm chilled about it. I assume the algorithm in the DSLAM will be fixed and it will follow a pattern to return my line to full speed.

If it isn't known I'll update this post with my experience as it recovers

Line stats:

DSL synchronization status: Up
Connection status: Showtime
Upstream line rate (kbit/s): 7200
Downstream line rate (kbit/s): 25000
Maximum upstream rate (kbit/s): 32027
Maximum downstream rate (kbit/s): 83480
Upstream noise safety coefficient (dB): 25.8
Downstream noise safety coefficient (dB): 22.8
Upstream interleave depth: 0
Downstream interleave depth: 0
Line standard: VDSL
Upstream line attenuation (dB): 17.6
Downstream line attenuation (dB): 8.9
Upstream output power (dBm): 4.6
Downstream output power (dBm): 12.6
Channel type: None
DSL up-time: 0 days 3 hours 59 minutes 59 seconds

Yeah it'll return to normal soon enough... The crazy thing is most homeowners do not even notice when their connection drops like this, if they are online and can get on instagram and stream netflix they are smiling along.

6 months ago, DLM was being *terrible*: it banded things too easily, and was really bad at recovering from banding. It would stick and stall at artificially low speeds, and never recover properly.

I've not seen many signs recently to suggest that this has either worsened or improved.

Long story on banding changes.

A few months ago I found I was apparently banded at 60,000Kbps, a speed that strangely I had never reached until that happened. I have two HG612s. The one in use at the time was the one that hit the 60,000 through several re-sync's over the weeks. The Max attainable always a few hundred Kbps below that.

In late October or early in November I put the other one on just to test it and my spare 582n router still worked, so I could lend them to someone. This sync'ed in the mid 5700s with Max attainable a bit higher.

I decided to experiment with the ZyXel modem router from AA, which they had configured in router mode to be fed by the HG 612, to get the IPv6 working. It hadn't done from Day 1 as far as I know.

Over the next two or three weeks I tried that in modem router mode, giving 59999Kbps sync and Max attainable around the very high 69,000+Kbps. The IPv6 was unstable so I then substituted an HG612 feeding my ASUS RT-N66U which I knew handled IPv6 from my time with Plusnet.

Over this period my banding dropped to 55,000Kbps .

I then replaced the HG612 with a Draytek Vigor 130 modem hoping to help remove the banding. Feeding the ZyXel back in its original configuration. It provided IPv6 for a few hours then fell back to IPv4. Banding fell to 49,000Kbps.

I then obtained a Billion 8800NL R2 and installed it in modem router mode on Wednesday 17 Dec evening after four days of the Draytek. It sync'ed at the 48,999Kbps expected, with attainable at 67,000+Kbps. However I had to reboot it two or three times that evening to get IPv6 working properly.

10am Thursday 18 Dec DLM dropped the banding to 44,000Kbps . I hoped that was because of my continued messing around, and resigned myself to several weeks at that speed.

4:42am on Saturday 17 Dec it jumped back up to 55,000Kbps! Been there ever since. I now have to wait and see if and when it puts it back up to 60,000Kbps or even removes it altogether. Max attainable in the 67,000s.

end of disruption 17th December 20,000/4999

23rd December 09:00 resync to 22400/5999
24th December 08:40 resync to 25000/7240
25th December 07:45 resync (G.INP reduction?)
26th December 09:12 resync to 27400/8496

Edited by deleted (Mon 26-Dec-16 09:58:13)

I would run the BT speed test It will tell you if you are outside your normal expected range. If it does, I would also contact your ISP and register a fault with them.

Certainly, despite what others have said (who I have much respect for) do not expect DLM to reset the line any day soon. The time it reset my line lower (June/July), it took getting on to 3 months to bring my line back up to what it is capable of. I then had another local power failure about a month ago. I'm back down to 64Mb, down from 76Mb. People say a single power loss of the modem will not get the attention of DLM. My experience says otherwise (or maybe we have an over active DLM around here). Personally, I wish they would turn the darn thing off.

Reporting a fault, at the very least, gets the attention of your ISP. If it is way outside the expected range, they will do the biz. Just don't stand back and expect things to improve. You'll be paying good money for a poor service for a long time.