Cisco Systems UBR10012 manual Region Manager Start End Sizeb Class Media Name 0x0A000000

Chapter 3 Troubleshooting PRE-1 Modules

Troubleshooting Common System Problems

Cisco Internetwork Operating System Software

IOS (tm) 10000 Software (UBR10K-P6-M), Experimental Version 12.2(20031215:22350]

Copyright (c) 1986-2003 by cisco Systems, Inc.

Compiled Mon 15-Dec-03 17:28 by mnagai

Image text-base: 0x60008968, data-base: 0x61B80000

ROM: System Bootstrap, Version 12.0(9r)SL2, RELEASE SOFTWARE (fc1)

BOOTLDR: 10000 Software (C10K-EBOOT-M), Version 12.0(17)ST, EARLY DEPLOYMENT RE)

ubr10k uptime is 6 days, 18 hours, 59 minutes

System returned to ROM by bus error at PC 0x0, address 0x0 at 04:15:55 UTC Thu Dec 11 2003 System restarted at 04:18:56 UTC Thu Dec 11 2003

...

Router#

Step 2 Determine whether the memory address for the bus error is a valid address. If the address is valid, the problem is most likely a hardware problem. If the address is an invalid address (such as the above example of 0x0), the problem is software-related.

Step 3 If the problem is hardware-related, you can map the memory address to a particular hardware component by using the show region command.

Router# show	region
Region Manager:
Start	End	Size(b)	Class	Media	Name
0x0A000000	0x0FFFFFFF	100663296	Iomem	R/W	iomem
0x2A000000	0x2FFFFFFF	100663296	Iomem	R/W	iomem:(iomem_cwt)
0x60000000	0x69FFFFFF	167772160	Local	R/W	main
0x60008968	0x61B7FFFF	28800664	IText	R/O	main:text
0x61B80000	0x61CC1ADF	1317600	IData	R/W	main:data
0x61CC1AE0	0x627663BF	11159776	IBss	R/W	main:bss
0x627663C0	0x69FFFFFF	126458944	Local	R/W	main:heap
0x70000000	0x7FFFFFFB	268435452	Local	R/W	heap2
0x80000000	0x89FFFFFF	167772160	Local	R/W	main:(main_k0)
0xA0000000	0xA9FFFFFF	167772160	Local	R/W	main:(main_k1)

Router#

Step 4 When you have identified the hardware that is generating the bus error, try removing and reinserting the hardware into the chassis. If this does not correct the problem, replace the DRAM chips on the hardware. If the problem persists, replace the hardware.

Step 5 If the problem is software-related, verify that you are running a released version of software, and that this release of software supports all of the hardware that is installed in the router. If necessary, upgrade the router to the latest version of software.

Step 6 To further troubleshoot the problem, registered users on Cisco.com can also decode the output of multiple show commands by using the Output Interpreter tool, which is at the following URL:

https://www.cisco.com/cgi-bin/Support/OutputInterpreter/home.pl

Cisco uBR10012 Universal Broadband Router Troubleshooting Guide

3-14 OL-1237-01