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New Member

cisco 2620 error

On a new recently installed 2620 i have encountered a problem, any traffic through the fastethernet module - in or out - causes the router to re-boot with a segmentV exception.

The router has a single network module with a wan card installed on it, the wan card has been tested and works fine.

It seems that this is usually caused by a software bug and that updating the software is often the answer ( this router is also running an early release deployment) if this is the case how do you upgrade the ios when the only ethernet port will not accept any traffic.

I have attached some info at the bottom.

Any help would be appreciated.

Wragby_lib - SegV exception


*** System received a SegV exception ***

signal= 0xb, code= 0x1200, context= 0x810b5a48

PC = 0x80b72c04, Vector = 0x1200, SP = 0x81195670

LNL018_Wragby_Lib> uptime is 2 minutes

System restarted by error - a SegV exception, PC 0x80B72C04

System image file is "flash:c2600-js-mz.120-2.XC2"

LNL018_Wragby_Lib>>show stacks

Minimum process stacks:

Free/Size Name

9880/12000 Init


8456/9000 DHCP Client

Interrupt level stacks:

Level Called Unused/Size Name

1 32 8844/9000 Network interfaces

2 0 9000/9000 Timebase Reference Interrupt

3 0 9000/9000 PA Management Int Handler

6 126 8908/9000 16552 Con/Aux Interrupt

7 71556 8916/9000 MPC860 TIMER INTERRUPT

System was restarted by error - a SegV exception, PC 0x80B72C04

C2600 Software (C2600-JS-M), Version 12.0(2)XC2, EARLY DEPLOYMENT RELEASE SOFTWA

RE (fc1)

TAC:Home:SW:IOS:Specials for info

Compiled Wed 20-Jan-99 19:58 by rnapier (current version)

Image text-base: 0x80008088, data-base: 0x80B91C54

Stack trace from system failure:

FP: 0x81195670, RA: 0x811A883C

FP: 0x81195688, RA: 0x8002784C

FP: 0x811956C8, RA: 0x8025F4E8

FP: 0x811956D8, RA: 0x8025CFF0

FP: 0x811956E8, RA: 0x80235F9C

FP: 0x810B82C4, RA: 0x80251714

FP: 0x810B82D4, RA: 0x80251714

FP: 0x810B8304, RA: 0x8023605C


******* Information of Last System Crash **********



New Member

Re: cisco 2620 error

The Output Interpreter confirms that it is a software failure. If you want to upgrade the router, you can try upgrading across the serial interface if you have another to "back-to-back" it with. Apart from that, your options are limited. You could Xmodem through the console using ROMMON but it will take a while.


Re: cisco 2620 error

You may want to try the FE mod in a different slot.

New Member

Re: cisco 2620 error

Deilert - The Fast Ethernet on a 2620 is on-board. There are two spare WIC slots and one full-sized NM slot.

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