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Standard User konrado5
(newbie) Tue 05-Nov-13 11:36:21
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Double establishing of synchronization


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I've noticed strange phenomenon on my ADSL2+ line. I've had two routers and I've had the same thing. I have disconnection during the synchronization establishing. Following there are logs from my router:
Text
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23
45
67
89
1011
1213
1415
Jan 1 00:00:17  user    crit    kernel: eth0 Link UP.
Jan 1 00:00:17  user    crit    kernel: ADSL G.994 trainingJan 1 00:00:22  user    crit    kernel: ADSL G.992 started
Jan 1 00:00:26  user    crit    kernel: ADSL G.992 channel analysisJan 1 00:00:32  user    crit    kernel: ADSL G.992 message exchange
Jan 1 00:00:33  user    crit    kernel: ADSL link downJan 1 00:00:34  user    crit    kernel: ADSL G.994 training
Jan 1 00:00:42  user    crit    kernel: ADSL G.992 startedJan 1 00:00:47  user    crit    kernel: ADSL G.992 channel analysis
Jan 1 00:00:53  user    crit    kernel: ADSL G.992 message exchangeJan 1 00:00:53  user    crit    kernel: ADSL link up, interleaved, us=1221, ds=15200
Jan 1 00:00:56  daemon  crit    pppd[316]: PPP server detected.Jan 1 00:00:56  daemon  crit    pppd[316]: PPP session established.
Jan 1 00:00:56  daemon  crit    pppd[316]: PPP LCP UP.Jan 1 00:00:57  daemon  crit    pppd[316]: Received valid IP address from server. Connection UP.

On forum.kitz.co.uk I've heard there are two possible causes: 1) router tries different modualtations and 2) error in router's firmware. I think these possibilities are excluded. 1) is excluded because I have only ADSL2+ modulation enabled. 1) and 2) is excluded because sometimes I've had normal single synchronization establishing procedure. Furtermore, on old DSLAM i've had always single synchronization establishing after I've unplugged phone and phone cable connecting main socket with phone socket. I think it is untypical interference related to my phone line. I'm very curious what it is. I'm not complain. I'm only puzzled.
Standard User Ignitionnet
(knowledge is power) Tue 05-Nov-13 12:37:02
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Re: Double establishing of synchronization


[re: konrado5] [link to this post]
 
Why's this in the fibre broadband section?
Standard User yarwell
(sensei) Tue 05-Nov-13 14:17:12
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Re: Double establishing of synchronization


[re: konrado5] [link to this post]
 
it lost it the first time, so had to do it again. Something triggered a resync or renegotiation before it reported the link speed.

--

Phil

MaxDSL - goes as fast as it can and doesn't read the line checker first.

MaxDSL diagnostics


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Standard User Zarjaz
(knowledge is power) Tue 05-Nov-13 18:57:06
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Re: Double establishing of synchronization


[re: konrado5] [link to this post]
 
Every ADSL2+ circuit I test will always see a distinctive 'drop' during attempted training, so I'd not worry about it

Standard User konrado5
(newbie) Tue 05-Nov-13 19:25:34
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Re: Double establishing of synchronization


[re: Ignitionnet] [link to this post]
 
I apologize. I don't know what is proper section.
Standard User XRaySpeX
(eat-sleep-adslguide) Tue 05-Nov-13 19:30:14
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Re: Double establishing of synchronization


[re: konrado5] [link to this post]
 
General, or given the depth of them, Technical.

1999: Freeserve 48K Dial-Up => 2005: Wanadoo 1 Meg BB => 2007: Orange 2 Meg BB => 2008: Orange 8 Meg LLU => 2010: Orange 16 Meg LLU => 2011: Orange 20 Meg WBC
Standard User konrado5
(newbie) Tue 05-Nov-13 20:10:29
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Re: Double establishing of synchronization


[re: Zarjaz] [link to this post]
 
In reply to a post by Zarjaz:
Every ADSL2+ circuit I test will always see a distinctive 'drop' during attempted training, so I'd not worry about it

Could you say something more about distinctive drop?
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