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Cisco uBR10012 Universal Broadband Router Troubleshooting Guide
OL-1237-01
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