Kitz Forum
Broadband Related => FTTC and FTTP Issues => Topic started by: tommy45 on August 04, 2015, 08:29:35 AM
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After using the huawie HG612 for months, I decided to use the ECI for a while seeing at BT have fixed/botched the issues it had with G.inp by disabling it on the upstream, I powered off the HG612 some 2 days ago waited just over the 30 mins before powering the ECI , got a sync latency was normal. as expected, the IP profile was 77.28 instead of the 77.35 figure it had been with the HG612 in use,
So nothing further to report other than normal working, until what looks like DLM at around 5am this morning when the ECI lost sync
I found the connection modem looked to be in sync but no internet, the router logs showing pppoe lost at 5.14am and was still trying to connect , when i discovered the connection was down just before 8am
So i swapped the modem back to the huawei and powered it up and after it got a sync the router got a PPPOE session , then i find that G.inp has been removed and i have a interleaved profile DS only with a ip profile of 69.62mbps So the ECI still doesn't work properly with the way DLM has been botched it would seem, my stats don't seem to be as they should be either
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So, is the ECI just a rubbish modem then?
Perhaps DLM has punished you temporarily for swapping modems - It has done that to me in the past, I'm reasonably sure.
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So, is the ECI just a rubbish modem then?
Perhaps DLM has punished you temporarily for swapping modems - It has done that to me in the past, I'm reasonably sure.
It has never done so before, My ISP Zen provisions FTTC orders using the BT OR Speed /BTW Standard DLM profile as did my previous isp ,
Besides i made sure there was a 30mins gap between powering down the Huawei and powering up the ECI , so DLM should of seen as a forced EU resync , the difference in modem shouldn't cause DLM to do anything unless there's some form of incompatibility, which from the performance seen i would say the ECI worked as it should , So i'm at a loss,
One possibility is that DLM decided to try and add G.inp on the us, but modem is incompatible (which we know) so reverts to a default interleaving profile ,
It's trigger could of been a marked increase in error seconds with ECI ? But seeing as BT locked the POS down there's no definite answer,
Then there's what would cause the modem to appear to be in sync ie led's lit, (power,dsl,lan1) but no internet access(active PPPOE session) Similar to ECI modem - Issue 1 http://forum.kitz.co.uk/index.php/topic,15283.msg284199.html#post_ECI_modem_issue1 (http://forum.kitz.co.uk/index.php/topic,15283.msg284199.html#post_ECI_modem_issue1)
But the ECI was in use up till 16 march 15 , when G.inp was enabled on the cab in connected to, My connection had been interleaved on the DS only for 2weeks prior and as a result of G.inp being enabled i saw my DS speed and ip profile drop further,and a doubling of latency, with the ECI connected,
After swapping to the Huawei, 2 days later Ginp was applied to both us/ds latency back to normal, and sync back to the full rate, So it is very odd that encountered this no sync issue
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leaving modems and xDSL lines aside for the moment, isn't there some known issue with Zen and PPP? Vague memory from some earlier threads. (I may be way off on this, if so apol.)
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leaving modems and xDSL lines aside for the moment, isn't there some known issue with Zen and PPP? Vague memory from some earlier threads. (I may be way off on this, if so apol.)
I have never had any issue with pppoe with zen, I think someone did have an issue but that was down to the non standard firmware and set up of the router
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It's just that reading
> what would cause the modem to appear to be in sync ie led's lit, (power,dsl,lan1) but no internet access(active PPPOE session)
made me think along those lines. :-)
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Yeah I got the g.inp email and I thought tommy wont be happy :p
My guess is this, the DLM somehow detected the chipset change, and the process will temporarily turn of g.inp then turn it back on in future, we will only know if I am right tho if you keep the ECI plugged in.
I am baffled as to why you changed it tho, as why mess with something that isnt broken?
Given BT are now using g.inp and vectoring remains a possibility I really suggest everyone sticks with broadcom devices.
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@Chrysalis - indeed. Surely you have to be right on this
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Yeah I got the g.inp email and I thought tommy wont be happy :p
My guess is this, the DLM somehow detected the chipset change, and the process will temporarily turn of g.inp then turn it back on in future, we will only know if I am right tho if you keep the ECI plugged in.
I am baffled as to why you changed it tho, as why mess with something that isnt broken?
Given BT are now using g.inp and vectoring remains a possibility I really suggest everyone sticks with broadcom devices.
I changed it because my stats where trending in a downwards direction. when i first plugged the eci in latency was the same , so presumably was running g.inp on the ds, 2 days in and suddenly it ain't in sync after 4hrs of being left to it's own devices,
as soon as i plugged in the Huawie after it got a sync, i got internet access without doing anything with the router
About 10 mins ago (12:37am) I got a loss of sync and DLM has lowered the upstream power from 4.3 to 3.8, the Snr is sitting at 6- 5.9db, sync has increased slightly although interleave has increased a little, IP profile has increased also Just noticed the time from DLM pulling the connection down to the point of getting a PPPOE session was 7mins ,?
Update: DLM acting twice in 12hrs At 6:50am DLM re enabled G.inp on the DS same G.inp values as before, but a slight improvement on the DS snr and attainable rate
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Just seen this
I found the connection modem looked to be in sync but no internet, the router logs showing pppoe lost at 5.14am and was still trying to connect , when i discovered the connection was down just before 8am
My guess is that during that period the ECI kept trying and failing to establish a connection. This would trigger a failed initialisation. Unfortunately failed initialisations are also counted by the DLM as a retrain attempt :(
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I didn't think the Internet side of the connection affected the DLM in any way at all?
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@AlecR - it's referring to the initialisation of the DSLAM-to-modem link