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

Marko Milivojevic markom at pangalactic.net
Thu Jun 29 11:55:37 EDT 2006


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>> 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> 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> 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> 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
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