Cisco 837 restarting the ATM0 interface randomly

costabunny · ‎07-22-2007

Hi Guys me again (you helped me get the port forward stuff working properly). Since then I have noticed I have been getting periodic connection timeouts (mainly when gaming or using remote desktop). I attributed this to the PC (its just been rebuilt), but having spent some time it appears to be just fine.

I have setup a syslogd on my windows bot to try and understand if it is the router and I have a result. It seems to be bringing interfaces down and up again randomly.

I have this log output

07-23-2007 01:06:07 Local7.Notice 10.10.10.1 1490: 10.10.10.1: 4d04h: %LINEPROTO-5-UPDOWN: Line protocol on Interface Virtual-Access2, changed state to up

07-23-2007 01:06:04 Local7.Notice 10.10.10.1 1489: 10.10.10.1: 4d04h: %LINEPROTO-5-UPDOWN: Line protocol on Interface ATM0, changed state to up

07-23-2007 01:06:04 Local7.Error 10.10.10.1 1488: 10.10.10.1: 4d04h: %LINK-3-UPDOWN: Interface ATM0, changed state to up

07-23-2007 01:06:03 Local7.Info 10.10.10.1 1487: 10.10.10.1: 4d04h: %DIALER-6-BIND: Interface Vi2 bound to profile Di1

07-23-2007 01:06:03 Local7.Error 10.10.10.1 1486: 10.10.10.1: 4d04h: %LINK-3-UPDOWN: Interface Virtual-Access2, changed state to up

07-23-2007 01:05:49 Local7.Notice 10.10.10.1 1485: 10.10.10.1: 4d04h: %LINEPROTO-5-UPDOWN: Line protocol on Interface ATM0, changed state to down

07-23-2007 01:05:49 Local7.Notice 10.10.10.1 1484: 10.10.10.1: 4d04h: %LINEPROTO-5-UPDOWN: Line protocol on Interface Virtual-Access2, changed state to down

07-23-2007 01:05:48 Local7.Error 10.10.10.1 1483: 10.10.10.1: 4d04h: %LINK-3-UPDOWN: Interface ATM0, changed state to down

07-23-2007 01:05:48 Local7.Info 10.10.10.1 1482: 10.10.10.1: 4d04h: %DIALER-6-UNBIND: Interface Vi2 unbound from profile Di1

07-23-2007 01:05:47 Local7.Error 10.10.10.1 1481: 10.10.10.1: 4d04h: %LINK-3-UPDOWN: Interface Virtual-Access2, changed state to down

Can anyone suggest why this is suddenly happening to me?

(its on Dynamic IP, ADSL PPPoA)

thanks Rachel

paolo bevilacqua · ‎07-22-2007

Hi Rachel,

these can be "ADSL retrains". Please send "show version" and "show dsl interface" to see what can be done about it.

costabunny · ‎07-23-2007

Here is the output;

ARAGORN#show version

Cisco Internetwork Operating System Software

IOS (tm) C837 Software (C837-K9O3SY6-M), Version 12.2(13)ZH2, EARLY DEPLOYMENT RELEASE SOFTWARE (fc1)

Synched to technology version 12.2(14.5)T

TAC Support: http://www.cisco.com/tac

Compiled Tue 22-Jul-03 09:28 by ealyon

Image text-base: 0x800131E8, data-base: 0x80B50C04

ROM: System Bootstrap, Version 12.2(8r)YN, RELEASE SOFTWARE (fc1)

ROM: C837 Software (C837-K9O3SY6-M), Version 12.2(13)ZH2, EARLY DEPLOYMENT RELEASE SOFTWARE (fc1)

ARAGORN uptime is 4 days, 14 hours, 8 minutes

System returned to ROM by reload

System image file is "flash:c837-k9o3sy6-mz.122-13.ZH2.bin"

CISCO C837 (MPC857DSL) processor (revision 0x400) with 44237K/4915K bytes of memory.

Processor board ID AMB074705B1 (3629764849), with hardware revision 0000

CPU rev number 7

Bridging software.

1 Ethernet/IEEE 802.3 interface(s)

1 ATM network interface(s)

128K bytes of non-volatile configuration memory.

12288K bytes of processor board System flash (Read/Write)

2048K bytes of processor board Web flash (Read/Write)

Configuration register is 0x2102

ARAGORN#sh

ARAGORN#show dsl

ARAGORN#show dsl in

ARAGORN#show dsl interface ATM 0

ATU-R (DS) ATU-C (US)

Modem Status: Showtime (DMTDSL_SHOWTIME)

DSL Mode: ITU G.992.1 (G.DMT)

ITU STD NUM: 0x01 0x01

Vendor ID: 'ALCB' 'TSTC'

Vendor Specific: 0x0000 0x0000

Vendor Country: 0x00 0xB5

Capacity Used: 26% 80%

Noise Margin: 35.0 dB 13.0 dB

Output Power: 20.0 dBm 10.5 dBm

Attenuation: 14.5 dB 7.5 dB

Defect Status: None None

Last Fail Code: None

Selftest Result: 0x00

Subfunction: 0x15

Interrupts: 1700 (1 spurious)

Activations: 152

Init FW: embedded

Operartion FW: embedded

SW Version: 3.9.220

FW Version: 0x1A04

Interleave Fast Interleave Fast

Speed (kbps): 0 2112 0 544

Reed-Solomon EC: 0 0 0 0

CRC Errors: 0 0 0 2

Header Errors: 0 0 0 1

Bit Errors: 0 0

BER Valid sec: 0 0

BER Invalid sec: 0 0

LOM Monitoring : Disabled

DMT Bits Per Bin

00: 0 0 0 0 0 0 0 0 0 2 4 5 7 7 7 8

10: 9 9 9 9 9 9 9 9 9 9 8 7 7 7 0 0

20: 0 0 0 0 0 0 0 0 0 0 0 0 2 2 2 2

30: 3 4 4 4 4 4 4 4 4 4 5 5 5 5 5 5

40: 0 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5

50: 5 5 5 5 5 5 5 5 5 5 5 5 5 2 5 5

60: 5 5 5 5 4 4 4 4 4 4 4 4 4 4 4 4

70: 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4

80: 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4

90: 4 4 4 4 4 4 4 4 3 3 3 3 3 3 3 3

A0: 3 3 3 3 3 3 3 3 3 3 2 3 2 2 2 3

B0: 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2

C0: 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2

D0: 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2

E0: 2 2 2 2 2 2 0 0 0 0 0 0 0 0 0 0

F0: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Training log buffer capability is not enabled yet.

paolo bevilacqua · ‎07-23-2007

Hi,

code is quite old and would benefit from an update. I guess you do not have a support contract to access the download, so you would need to locate someone that has it.

Anyway you can enable the training log to see if indeed there are sync loss on the ADSL:

int atm 0

dsl enable-training-log

costabunny · ‎07-23-2007

Ok While I wait for the Gibtelecom techies to have a look at the line, I have decided to update the IOS (as the newer versions have DDNS support which is useful for me).

I have 'attained' c837-k9o3y6-mz.123-7.T12.bin and as my Router is a 48/12mb model I will go and find a nice howto, in order to update it.

Hopefully see you all soon ....

Rachel (Cisco Newbie learning the ropes the hard way cos my bos is too tight to pay for CCNA etc) :)

costabunny · ‎07-23-2007

Ok this looks like it could be the ADSL provider - I have heard reports of other clients having similar issues. I have enabled the training-log (but am unsure how to view it). I have reported a possible fault to Gibtelecom who assure me they will have a tech-monkey look at it and call me tomorrow.

I will contiue to monitor the log for anything new, but thus far its randomly generating the same output :(

Thanks guys :)

Rachel - Still smiling in Gibraltar.....

costabunny · ‎07-23-2007

Just an FYI - the update went swimmingly - I am going to try and 'spank' my network traffic now and see if the problem reoccurs during the next 12 hours.... x fingers guys

Rachel