[c-nsp] atm0 going down every five minutes (DSL: Defect: LOS LOF LCDi: retraining)

Tassos Chatzithomaoglou achatz at forthnet.gr
Fri Jun 30 05:22:07 EDT 2006


Maybe use an attenuator?

I had a problem with a cisco 827 router not connecting at all with a dslam, because it was too near. 
After putting an attenuator in front of it, the connection worked fine.

--
Tassos

Elmar Pigeaud wrote on 30/6/2006 11:56 πμ:
> I just got off the phone with the provider. This time I got another
> (more helpful) guy.
> 
> - The length of the line is 62m
> - Still, they never heard of SELT
> 
> They told me that every line less than a hundred meters could give a
> problem like mine. Ever heard of that?
> 
> Thanks,
> 
> Pjn
> 
> On 6/29/06, Elmar Pigeaud <pigeaud at gmail.com> wrote:
>> That's a pity. Will call the provider tomorrow.
>>
>> Thanks,
>>
>> Pjn
>>
>> On 6/29/06, Kristofer Sigurdsson <kristosig at gmail.com> wrote:
>>> Probably not - I was setting up an 878 the other day, that has it.  I
>>> also seem to remember it from 838 and even 828.  Those are all G.SHDSL
>>> routers, admittingly, as opposed to ADSL.
>>>
>>> -Kristo
>>>
>>> 2006/6/29, Marko Milivojevic <markom at pangalactic.net>:
>>>> Not on all platforms, for sure. :-)
>>>>
>>>> Kristofer Sigurdsson wrote:
>>>>> I believe you can adjust the speed from your end with dsl line-rate ...
>>>>>
>>>>> -Kristo
>>>>>
>>>>> 2006/6/29, Elmar Pigeaud <pigeaud at gmail.com>:
>>>>>> Nope, that's the problem. Could it be the firmware? I don't know,
>>>>>> however,
>>>>>> how to get it.
>>>>>>
>>>>>>
>>>>>> On 6/29/06, Marko Milivojevic <markom at pangalactic.net> wrote:
>>>>>>>
>>>>>>> You don't have another Cisco to try out?
>>>>>>>
>>>>>>> Elmar Pigeaud wrote:
>>>>>>>> Hm... too late to ask them now. Workday's been over for aaaages
>>>>>> (6:15)
>>>>>>> ;-)
>>>>>>>> Can you think of anything else?
>>>>>>>>
>>>>>>>> Thanks, however.
>>>>>>>>
>>>>>>>> On 6/29/06, *Marko Milivojevic * <markom at pangalactic.net
>>>>>>>> <mailto:markom at pangalactic.net>> wrote:
>>>>>>>>
>>>>>>>>
>>>>>>>>     I believe that you can't set it from your side (I could be
>>>>>> wrong, I
>>>>>>>>     don't
>>>>>>>>     have any routers now that I can play with), but you could ask
>>>>>>> service
>>>>>>>>     provider to lower it. 8 Mb/s downstream may not be the real
>>>>>> problem,
>>>>>>> it
>>>>>>>>     could be related to the upstream speed. 4M/512K should work
>>>>>> for up
>>>>>>>>     to 3 km
>>>>>>>>     over sewer pipes ;-)
>>>>>>>>
>>>>>>>>     Elmar Pigeaud wrote:
>>>>>>>>      > Sorry for asking, but how can I lower the speed?
>>>>>>>>      >
>>>>>>>>      > Thanks!
>>>>>>>>      >
>>>>>>>>      > On 6/29/06, *Marko Milivojevic* <markom at pangalactic.net
>>>>>>>>     <mailto:markom at pangalactic.net>
>>>>>>>>      > <mailto:markom at pangalactic.net
>>>>>> <mailto:markom at pangalactic.net>>>
>>>>>>>>     wrote:
>>>>>>>>      >
>>>>>>>>      >
>>>>>>>>      >     Try lowering the speed. I had problems with some 827's
>>>>>> at 8
>>>>>>> Mb/s
>>>>>>>>      >     even with
>>>>>>>>      >     rather short lines (~300m).
>>>>>>>>      >
>>>>>>>>      >     Elmar Pigeaud wrote:
>>>>>>>>      >      > Called them, they tested the line: no problem (they
>>>>>> never
>>>>>>>>     heard
>>>>>>>>      >     of SELT
>>>>>>>>      >      > however). Other modems have no problem whatsoever
>>>>>> (can't
>>>>>>>>     try another
>>>>>>>>      >      > cisco...). The line should be very short, because it is
>>>>>>>>     connected
>>>>>>>>      >     in our
>>>>>>>>      >      > own street and I get the full 8mbit.
>>>>>>>>      >      >
>>>>>>>>      >      > I can try to have them test the line more than they did
>>>>>>>>     now, but as
>>>>>>>>      >      > other modems have no problem on the same line, I don't
>>>>>>>>     think the
>>>>>>>>      >      > solution will be there.
>>>>>>>>      >      >
>>>>>>>>      >      > Any other suggestions?
>>>>>>>>      >      >
>>>>>>>>      >      > On 6/29/06, *Marko Milivojevic* <markom at pangalactic.net
>>>>>>>>     <mailto:markom at pangalactic.net>
>>>>>>>>      >     <mailto: markom at pangalactic.net <mailto:
>>>>>>> markom at pangalactic.net>>
>>>>>>>>      >      > <mailto:markom at pangalactic.net
>>>>>>>>     <mailto:markom at pangalactic.net> <mailto:markom at pangalactic.net
>>>>>>>>     <mailto:markom at pangalactic.net>>>>
>>>>>>>>      >     wrote:
>>>>>>>>      >      >
>>>>>>>>      >      >
>>>>>>>>      >      >     How long is the line? Can you ask the operator to
>>>>>>>>     perform SELT on
>>>>>>>>      >      >     the line?
>>>>>>>>      >      >
>>>>>>>>      >      >     Elmar Pigeaud wrote:
>>>>>>>>      >      >      > Sorry to re-submit the question, however, I got
>>>>>>>>     somewhat
>>>>>>>>      >     further.
>>>>>>>>      >      >     Our c836
>>>>>>>>      >      >      > router loses connection every five minutes. The
>>>>>>>>     line is
>>>>>>>>      >     ok, other
>>>>>>>>      >      >     modems
>>>>>>>>      >      >      > work fine. Our provider can see no problem. Can
>>>>>>>>     this have
>>>>>>>>      >      >     something to do
>>>>>>>>      >      >      > with my config? At the moment it is still very
>>>>>>>>     simple, and
>>>>>>>>      >     I have
>>>>>>>>      >      >     never
>>>>>>>>      >      >      > encountered a similar problem with the same
>>>>>>> provider.
>>>>>>>>      >      >      >
>>>>>>>>      >      >      > Has anyone ever seen a similar problem?
>>>>>>>>      >      >      >
>>>>>>>>      >      >      > Thanks in advance!
>>>>>>>>      >      >      >
>>>>>>>>      >      >      > Pjn
>>>>>>>>      >      >      >
>>>>>>>>      >      >      > The log:
>>>>>>>>      >      >      >
>>>>>>>>      >      >      > Jun 29 14:33:51.750: DSL: Defect: LOS LOF LCDi:
>>>>>>>>     retraining
>>>>>>>>      >      >      > Jun 29 14:33:51.750: DSL: Received response:
>>>>>> 0x41
>>>>>>>>      >      >      > Jun 29 14:33:52.710:
>>>>>>>>     c820_atm_check_linkstate_periodic:
>>>>>>>>      >     PHY line
>>>>>>>>      >      >     is going
>>>>>>>>      >      >      > down
>>>>>>>>      >      >      > Jun 29 14:33: 52.710:   Shutting down ATM0...
>>>>>>>>      >      >      > Jun 29 14:33:52.710: ATM0 c820_atm_shutdown:
>>>>>>> state=0
>>>>>>>>      >      >      > Jun 29 14:33:52.710: pquicc_sar_stop...
>>>>>>>>      >      >      > Jun 29 14:33:52.710:   c820_atm_stop_receive...
>>>>>>>>      >      >      > Jun 29 14:33:52.966:   pquicc_sar_rx_disable...
>>>>>>>>      >      >      > Jun 29 14:33:52.966:   Disable TX Cav ....
>>>>>>>>      >      >      > Jun 29 14:33:52.966:   Disable RX Cav ....
>>>>>>>>      >      >      > Jun 29 14:33:52.966 :   Disable PD[15] and
>>>>>> PD[14]
>>>>>>> ....
>>>>>>>>      >      >      > Jun 29 14:33:52.970: c820_reset_vc: conid = 0
>>>>>>>>      >      >      > Jun 29 14:33:52.970: c820_reset_vc: conid = 3
>>>>>>>>      >      >      > Jun 29 14:33:52.970: Resetting ATM0
>>>>>>>>      >      >      >
>>>>>>>>      >      >      > Firmware info:
>>>>>>>>      >      >      >
>>>>>>>>      >      >      > Cisco IOS Software, C836 Software
>>>>>> (C836-K9O3Y6-M),
>>>>>>>>     Version
>>>>>>>>      >      >     12.3(8)T11,
>>>>>>>>      >      >      > RELEASE S
>>>>>>>>      >      >      > OFTWARE (fc1)
>>>>>>>>      >      >      > Technical Support:
>>>>>> http://www.cisco.com/techsupport
>>>>>>>>      >      >      > Copyright (c) 1986-2005 by Cisco Systems, Inc.
>>>>>>>>      >      >      > Compiled Wed 10-Aug-05 20:25 by dchih
>>>>>>>>      >      >      >
>>>>>>>>      >      >      > ROM: System Bootstrap, Version 12.2(11r)YV3,
>>>>>>> RELEASE
>>>>>>>>      >     SOFTWARE (fc2)
>>>>>>>>      >      >      >
>>>>>>>>      >      >      > gw2 uptime is 2 hours, 52 minutes
>>>>>>>>      >      >      > System returned to ROM by power-on
>>>>>>>>      >      >      > System restarted at 11:48:51 UTC Thu Jun 29 2006
>>>>>>>>      >      >      > System image file is "flash:
>>>>>>>>     c836-k9o3y6-mz.123-8.T11.bin"
>>>>>>>>      >      >      >
>>>>>>>>      >      >      > Running config:
>>>>>>>>      >      >      >
>>>>>>>>      >      >      > !
>>>>>>>>      >      >      > ! Last configuration change at 13:07:35 UTC
>>>>>> Thu Jun
>>>>>>> 29
>>>>>>>>      >     2006 by admin
>>>>>>>>      >      >      > !
>>>>>>>>      >      >      > version 12.3
>>>>>>>>      >      >      > no service pad
>>>>>>>>      >      >      > service timestamps debug datetime msec
>>>>>>>>      >      >      > service timestamps log datetime msec
>>>>>>>>      >      >      > no service password-encryption
>>>>>>>>      >      >      > !
>>>>>>>>      >      >      > hostname c836
>>>>>>>>      >      >      > !
>>>>>>>>      >      >      > boot-start-marker
>>>>>>>>      >      >      > boot-end-marker
>>>>>>>>      >      >      > !
>>>>>>>>      >      >      > logging buffered 10000 debugging
>>>>>>>>      >      >      > no logging console
>>>>>>>>      >      >      > !
>>>>>>>>      >      >      > no aaa new-model
>>>>>>>>      >      >      > ip subnet-zero
>>>>>>>>      >      >      > !
>>>>>>>>      >      >      > !
>>>>>>>>      >      >      > ip ips po max-events 100
>>>>>>>>      >      >      > no ftp-server write-enable
>>>>>>>>      >      >      > !
>>>>>>>>      >      >      > !
>>>>>>>>      >      >      > username admin privilege 15 secret 5 <pw>
>>>>>>>>      >      >      > !
>>>>>>>>      >      >      > !
>>>>>>>>      >      >      > bridge irb
>>>>>>>>      >      >      > !
>>>>>>>>      >      >      > !
>>>>>>>>      >      >      > interface Ethernet0
>>>>>>>>      >      >      >  description
>>>>>>>>     $ETH-LAN$$ETH-SW-LAUNCH$$INTF-INFO-Ethernet
>>>>>>>>      >     10/100$
>>>>>>>>      >      >      >  ip address 192.168.20.1 <http://192.168.20.1>
>>>>>>>>     <http://192.168.20.1>
>>>>>>>>      >     <http://192.168.20.1> 255.255.255.0
>>>>>> <http://255.255.255.0> <
>>>>>>>>     http://255.255.255.0>
>>>>>>>>      >      >     <http://255.255.255.0>
>>>>>>>>      >      >      >  ip nat inside
>>>>>>>>      >      >      > !
>>>>>>>>      >      >      > interface BRI0
>>>>>>>>      >      >      >  no ip address
>>>>>>>>      >      >      >  shutdown
>>>>>>>>      >      >      > !
>>>>>>>>      >      >      > interface ATM0
>>>>>>>>      >      >      >  no ip address
>>>>>>>>      >      >      >  no ip route-cache
>>>>>>>>      >      >      >  no ip mroute-cache
>>>>>>>>      >      >      >  no atm ilmi-keepalive
>>>>>>>>      >      >      >  dsl operating-mode auto
>>>>>>>>      >      >      >  dsl enable-training-log
>>>>>>>>      >      >      >  bridge-group 1
>>>>>>>>      >      >      >  bridge-group 1 spanning-disabled
>>>>>>>>      >      >      >  pvc auto 0/34
>>>>>>>>      >      >      >   encapsulation aal5snap
>>>>>>>>      >      >      >  !
>>>>>>>>      >      >      > !
>>>>>>>>      >      >      > interface FastEthernet1
>>>>>>>>      >      >      >  no ip address
>>>>>>>>      >      >      >  duplex auto
>>>>>>>>      >      >      >  speed auto
>>>>>>>>      >      >      > !
>>>>>>>>      >      >      > interface FastEthernet2
>>>>>>>>      >      >      >  no ip address
>>>>>>>>      >      >      >  duplex auto
>>>>>>>>      >      >      >  speed auto
>>>>>>>>      >      >      > !
>>>>>>>>      >      >      > interface FastEthernet3
>>>>>>>>      >      >      >  no ip address
>>>>>>>>      >      >      >  duplex auto
>>>>>>>>      >      >      >  speed auto
>>>>>>>>      >      >      > !
>>>>>>>>      >      >      > interface FastEthernet4
>>>>>>>>      >      >      >  no ip address
>>>>>>>>      >      >      >  duplex auto
>>>>>>>>      >      >      >  speed auto
>>>>>>>>      >      >      > !
>>>>>>>>      >      >      > interface BVI1
>>>>>>>>      >      >      >  mac-address 000f.fe1e.f0a5
>>>>>>>>      >      >      >  ip address dhcp
>>>>>>>>      >      >      >  ip nat outside
>>>>>>>>      >      >      > !
>>>>>>>>      >      >      > ip classless
>>>>>>>>      >      >      > ip route 0.0.0.0 <http://0.0.0.0>
>>>>>> <http://0.0.0.0>
>>>>>>>>     < http://0.0.0.0> 0.0.0.0 <http://0.0.0.0>
>>>>>>>>      >     <http://0.0.0.0> <http://0.0.0.0> BVI1
>>>>>>>>      >      >      > no ip http server
>>>>>>>>      >      >      > ip nat inside source list 1 interface BVI1
>>>>>> overload
>>>>>>>>      >      >      > !
>>>>>>>>      >      >      > !
>>>>>>>>      >      >      > access-list 1 permit 192.0.0.0
>>>>>> <http://192.0.0.0>
>>>>>>>>     <http://192.0.0.0>
>>>>>>>>      >     <http://192.0.0.0> 0.255.255.255 <http://0.255.255.255>
>>>>>>>>     <http://0.255.255.255 <http://0.255.255.255>>
>>>>>>>>      >      >     <http://0.255.255.255>
>>>>>>>>      >      >      > !
>>>>>>>>      >      >      > control-plane
>>>>>>>>      >      >      > !
>>>>>>>>      >      >      > bridge 1 protocol ieee
>>>>>>>>      >      >      > bridge 1 route ip
>>>>>>>>      >      >      > !
>>>>>>>>      >      >      > line con 0
>>>>>>>>      >      >      >  login local
>>>>>>>>      >      >      >  no modem enable
>>>>>>>>      >      >      > line aux 0
>>>>>>>>      >      >      > line vty 0 4
>>>>>>>>      >      >      >  privilege level 15
>>>>>>>>      >      >      >  login local
>>>>>>>>      >      >      >  transport input telnet ssh
>>>>>>>>      >      >      > !
>>>>>>>>      >      >      > scheduler max-task-time 5000
>>>>>>>>      >      >      > !
>>>>>>>>      >      >      > end
>>>>>>>>      >      >      > _______________________________________________
>>>>>>>>      >      >      > cisco-nsp mailing list
>>>>>> cisco-nsp at puck.nether.net
>>>>>>>>     <mailto:cisco-nsp at puck.nether.net>
>>>>>>>>      >     <mailto:cisco-nsp at puck.nether.net
>>>>>>>>     <mailto:cisco-nsp at puck.nether.net>>
>>>>>>>>      >      >     <mailto:cisco-nsp at puck.nether.net
>>>>>>>>     <mailto:cisco-nsp at puck.nether.net>
>>>>>>>>      >     <mailto:cisco-nsp at puck.nether.net
>>>>>>>>     <mailto:cisco-nsp at puck.nether.net>>>
>>>>>>>>      >      >      >
>>>>>> https://puck.nether.net/mailman/listinfo/cisco-nsp
>>>>>>>>     <https://puck.nether.net/mailman/listinfo/cisco-nsp>
>>>>>>>>      >      >     <https://puck.nether.net/mailman/listinfo/cisco-nsp
>>>>>>>>      >     < https://puck.nether.net/mailman/listinfo/cisco-nsp>>
>>>>>>>>      >      >      > archive at
>>>>>>> http://puck.nether.net/pipermail/cisco-nsp/
>>>>>>>>      >      >      >
>>>>>>>>      >      >
>>>>>>>>      >      >
>>>>>>>>      >
>>>>>>>>      >
>>>>>>>>
>>>>>>>>
>>>>>> _______________________________________________
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>>>>>>
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