FAO: CRT -- ECI Modem Latency Problem with G.INP
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FAO: CRT -- ECI Modem Latency Problem with G.INP
28-03-2015 6:33 AM
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I seem to have a problem with an ECI VDSL2 modem. Is there anything you can do to help?
It looks as if G.INP has been enabled on the connection from shortly after 2pm on 22nd March.
There was no loss of PPP session (just a few lost packets,) but an immediate 8 or 9 ms increase in baseline latency which has persisted ever since.
(The rumblings of peak time packet loss also visible on the ping graph have been going on for some months now on the busiest nights of the week and are not related: presumably a separate BT capacity problem.)
The street cabinet is within sight and the latency on the connection has been a steady 5 or 6 ms since it was installed.
Upstream throughput seems to be lowered, but downstream is OK (it's a 40/20 connection).
Can I expect a firmware update to be automatically pushed to the modem by BT in due course in order to fix the problem, or are you able to arrange to swap out a Huawei?
Thanks.
EDIT: It may be useful to confer with Andrews & Arnold (and other ISPs,) who are seeing the same thing.
Troubleshooting: The Limitations of Traceroute & Ping
Latency: Connection "fast" but internet sluggish? Bufferbloat FAQ
Black Holes: Worth noting that the Plusnet Hub One router has an MTU of 1488 bytes.
Re: FAO: CRT -- ECI Modem Latency Problem with G.INP
28-03-2015 8:04 AM
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http://community.plus.net/forum/index.php/topic,136287.176.html
For your line, have you noticed a drop in the upstream speed returned from speed tests ?
Re: FAO: CRT -- ECI Modem Latency Problem with G.INP
28-03-2015 8:38 AM
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Quote from: InterZoom Upstream throughput seems to be lowered, but downstream is OK (it's a 40/20 connection).
Troubleshooting: The Limitations of Traceroute & Ping
Latency: Connection "fast" but internet sluggish? Bufferbloat FAQ
Black Holes: Worth noting that the Plusnet Hub One router has an MTU of 1488 bytes.
Re: FAO: CRT -- ECI Modem Latency Problem with G.INP
28-03-2015 10:25 AM
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Re: FAO: CRT -- ECI Modem Latency Problem with G.INP
28-03-2015 11:20 AM
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Troubleshooting: The Limitations of Traceroute & Ping
Latency: Connection "fast" but internet sluggish? Bufferbloat FAQ
Black Holes: Worth noting that the Plusnet Hub One router has an MTU of 1488 bytes.
Re: FAO: CRT -- ECI Modem Latency Problem with G.INP
28-03-2015 11:38 AM
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My line was already interleaved at the time G.inp was enabled this added extra latency totalling 27ms and sync speed was down to around 70mbps, put the unlocked huawei modem into use and a day or some later back to full sync rate and latency 1ms higher than when on fast path
If you want to use the ECI modem it will need a bt engineer to reset dlm
Re: FAO: CRT -- ECI Modem Latency Problem with G.INP
28-03-2015 11:44 AM
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I'm happy with whatever the Customer Relations Team want to do to fix the problem.
Troubleshooting: The Limitations of Traceroute & Ping
Latency: Connection "fast" but internet sluggish? Bufferbloat FAQ
Black Holes: Worth noting that the Plusnet Hub One router has an MTU of 1488 bytes.
Re: FAO: CRT -- ECI Modem Latency Problem with G.INP
28-03-2015 11:50 AM
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Re: FAO: CRT -- ECI Modem Latency Problem with G.INP
28-03-2015 12:00 PM
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I've not read anything recent on kitz forum or here.
I've only read comments to suggest updates may 'perhaps' to be pushed out to ECI kit from early next month.
(I've been using my ECI modem uninterrupted for past 5 months until yesterday. I can see G.INP stats clocking up on my unlocked HG612)
Re: FAO: CRT -- ECI Modem Latency Problem with G.INP
28-03-2015 12:03 PM
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Re: FAO: CRT -- ECI Modem Latency Problem with G.INP
28-03-2015 12:41 PM
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Re: FAO: CRT -- ECI Modem Latency Problem with G.INP
28-03-2015 1:02 PM
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On the subject of needing a DLM reset before the modem gets firmware pushed, I wrote the below in a different thread:
DLM and the TR-069 firmware push are different things managed by different systems. A DLM reset will accomplish nothing, a reboot of the modem might.
As soon as modems are on the correct firmware they will go onto the proper G.inp profile - as far as the central DLM system is confirmed they are on that profile anyway.
If there's a problem with the modems and they aren't responding to firmware updates, even after a reboot, Openreach may have a few truck rolls ahead of them to swap modems that are failing to update out
Re: FAO: CRT -- ECI Modem Latency Problem with G.INP
28-03-2015 3:32 PM
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There is no internal wiring in play: it's a brand new line which passes straight through the wall to the modem on the other side.
The cabinet is Huawei. Picture attached.
Troubleshooting: The Limitations of Traceroute & Ping
Latency: Connection "fast" but internet sluggish? Bufferbloat FAQ
Black Holes: Worth noting that the Plusnet Hub One router has an MTU of 1488 bytes.
Re: FAO: CRT -- ECI Modem Latency Problem with G.INP
28-03-2015 3:37 PM
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Wonder if this is actually a G.inp issue or just DLM has kicked in?
Raise a ticket or perhaps wait for the forum bods to have a look at your line profile and see if it is showing as having G.inp or an interleaved profile present?
The issue AAISP mentioned shows G.inp as the profile even though there's clearly interleave there.
Re: FAO: CRT -- ECI Modem Latency Problem with G.INP
28-03-2015 4:13 PM
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