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WS-C6509 sw got rebooted due to below reason.

Hi All, 

Can we know the reason behind the unexpected reload of the device? below is the error we got 
bus error at PC 0x42820514, address 0x0

Cisco IOS Software, s72033_rp Software (s72033_rp-IPSERVICESK9_WAN-M), Version 12.2(33)SXI9, RELEASE SOFTWARE (fc2)
Technical Support:
Copyright (c) 1986-2012 by Cisco Systems, Inc.
Compiled Fri 24-Feb-12 21:38 by prod_rel_team

ROM: System Bootstrap, Version 12.2(17r)SX7, RELEASE SOFTWARE (fc1)

EAG-WAN-CORE-RTF1 uptime is 14 hours, 3 minutes
Uptime for this control processor is 14 hours, 3 minutes
Time since EAG-WAN-CORE-RTF1 switched to active is 14 hours, 2 minutes
System returned to ROM by s/w reset at 11:45:22 UTC Fri Sep 24 2021 (SP by bus error at PC 0x417CD188, address 0x0)
System restarted at 11:48:44 UTC Fri Sep 24 2021
System image file is "disk0:s72033-ipservicesk9_wan-mz.122-33.SXI9.bin"
Last reload reason: bus error at PC 0x42820514, address 0x0

cisco WS-C6509-E (R7000) processor (revision 1.5) with 983008K/65536K bytes of memory.
Processor board ID SMG1348N05E
SR71000 CPU at 600Mhz, Implementation 0x504, Rev 1.2, 512KB L2 Cache
Last reset from s/w reset
6 Virtual Ethernet interfaces
106 Gigabit Ethernet interfaces
16 Ten Gigabit Ethernet interfaces
1917K bytes of non-volatile configuration memory.
8192K bytes of packet buffer memory.

65536K bytes of Flash internal SIMM (Sector size 512K).
Configuration register is 0x2102

Leo Laohoo
VIP Community Legend

Post the complete output to the following commands: 

  1. dir 
  2. dir disk0:
Georg Pauwen
VIP Expert



how old is the switch ? The 6509-E has been around for a very long time as far as I recall. Bus errors are usually not a good thing and often indicate some sort of hardware issue. I also looks like you are running very outdated software (12.2), you might want to upgrade to a 15.x release...