IP Profile Stuck?

[#1]

One wonders how much discernible difference that will make to your internet usage experience? Sometimes pushing the sync speed to its limits only serves to introduce higher error rates with a consequent fall in useable data transfer speeds.

[#2]

Cheers for the update,

Glad that the IP profile is no longer stuck so the DLM reset did the trick, even though the sync speed dropped as a result. 

Dynamic IPs in our network are assigned from localised, relatively small pools specific to an exchange, so that'd explain why they're "sticky" and don't change very often.

Just to clear a couple of things up which adslmax suggested in the thread on the ThinkBroadband forums, although you may already have worked it out. I haven't responded over there as I don't have a 'staff' account and I don't fancy opening a flood gate for people to PM my personal account.

The "current line speed" profile our side (known internally as the workplace profile) will have no effect on your throughput as you've got a dynamic IP, but even with a static IP, it doesn't affect DLM. 

Also, we haven't charged a call out fee for an engineer visit as part of a fault investigation for almost a year.

All that said, and while I sort of agree with Townman in that it's mostly academic, interesting stuff!

Keep me posted on how you get on. 

[#3]

Thanks @Gandalf . I'm just hoping that I've not spoken too soon, but things do seem to be working as they should at the moment. If the IP Profile changes as SNRM reduces in the coming days, that will be the final conformation that all is good again 🤞

Whether it was the DLM reset, or the "reset" triggered by the 30 minute disconnect that has woken up the IP Profile system, we may probably never know. However, at least this has shown two "toolbox" options if this occurs again for standard Dynamic IP users.

Hi @Townman , in fairness I've not raised user experience, (or throughput speed) at any point during this, simply that I was seeing a problem which was later confirmed as a "profile mismatch" fault by the BTW system. There is no harm in understanding a fault and trying to fix it in my view and it may also benefit other users in the future. However, since you ask, when I get back to 3dB SNRM, with a rough estimated IP Profile 55.7, that's around a 10% throughput improvement from the stuck profile and 50% improvement before upgrading to Fibre Extra (I've also based this on when I was on Fibre Extra in the past). As our household streams more and more HD/UHD TV in different rooms these days, I'll take that improvement any day before having to consider FTTP 😉

Just hoping things really are resolved now .......😲

[#4]

No problem @dgilbert2, it's a mystery but fingers crossed all is good now moving forward. 

[#5]

Update - Umm, interesting!?

DLM has finally started to make changes. It seems to have taken a couple of days longer this time, but I assume it was down to the restarts I did earlier and DLM wanting 3 clear days before doing anything.

Anyway, I've updated my table with the current situation;

So I'm still on 6dB SNRM, but changed to retransmission low, INPRein 0. In my opinion it looks like the IP Profile has been locked again, this time to 48.08 as it should be more in the region of 50 with retransmission low. I'm therefore starting to wonder if the overall system logic has been changed to lock the IP Profile when DLM tries making improvements and once concluded, the IP Profile is then unlocked (this does give a consistent user throughput  experience during DLM activity), but I could be completely wrong!! More, do nothing, waiting game to see where I end up!.............

[#6]

Some good thoughts, but I've tested your line and the tests are showing "DSL and BRAS profile mismatch has been identified" again, so I think the IP profile may just be stuck.

I've raised a fault with our suppliers, which should in theory be passed onto Openreach's diagnostics team to resolve, but if that doesn't happen, we'd need to arrange an engineer.

I'll check up on the progress of the fault tomorrow for you.

[#7]

I agree with this post on TTB Forum over VDSL IP Profile by j0hn83

Retx High (High G.INP) gives an IP Profile roughly 91-92% of the sync speed.
So that matches what you are seeing now.

Retx Low gives an IP Profile that's exactly 96.69% of the sync speed.
It may only be exactly that figure on Broadcom chipset modems and may differ very slightly on other modems.

Also to add you won't upset the DLM if you leave 30 minutes between disconnecting and reconnecting. It doesn't even count that as a resync.
The DLM monitors lines using 15 minute bins. It's only if you disconnect and reconnect in the same 15 minute bin that it gets counted as 1 resync. So leaving it 30 minutes guarantees that it isn't counted as a resync.

**You are also allowed 5, 10 or 20 resyncs a day, depending on the DLM policy chosen by the ISP, before the DLM thinks there is a problem.
1 or 2 resyncs in a 24 hour period will have no negative consequences to any line.

**The DLM thresholds have changed a bit over the years and those figures may no longer be exact but they haven't (and almost certainly won't) change enough that a couple resyncs will make a difference.

In saying all that it is understandable to not want to upset the temperamental DLM.

[#8]

Thank you @goldenfibre for the IP Profile info which I've used in my table to indicate when it's been locked / not tracking, the connection speed.

Thanks for raising the fault @Gandalf . I've updated my table with today's DLM activity which lowered the SNRM to 5dB with retransmission high. IP Profile still locked on 48.08. I hope BTO come back with an explanation for this locking/unlocking after a DLM reset or recognition of a fault they need to fix.

[#9]

Just checked the fault and it's showing that we've got to arrange an engineer for Openreach to investigate further. 

Are you free any weekdays 8am to 1pm, or 1pm to 6pm for a visit? 

[#10]

@dgilbert2  Are these checks done at the same time everyday ? 

In my case SNRM is approx 3dB during the day and overnight it's approx 6dB

[#11]

Thanks @Gandalf , I have provided an update on an engineers visit in question #224452662 , I hope that's is OK,

[#12]

Hi @Champnet , yes, similar time each day but to be honest there is little SNRM drift throughout a 24hr period (the drop below is the DLM reboot to 5dB):

[#13]

@dgilbert2 wrote:

Thanks @Gandalf , I have provided an update on an engineers visit in question #224452662 , I hope that's is OK,

Cheers, I've booked the engineer visit for you and updated the ticket 224452662 with when they'll visit you.

Made a small typo. Excellent should be Excellence. 

(Left notes for the engineer to call their support team Diagnostics Centre of Excellence (DCoE) if they need help)

[#14]

@dgilbert2  Yours looks a lot healthier than Mine !

[#15 · Accepted solution]

I've just had a look and I can see the engineer's upgraded your master socket as well as suggesting to connect your Hub One straight into it without the Openreach modem, because the Hub has a modem built in.

Testing your line isn't showing that profile mismatch now, but it may be worth keeping an eye on it over the next few days.