[c-nsp] 7206 crash in iomem2

[Vinny Abello]

In researching a crash on a 7206VXR I have the following information:

System returned to ROM by bus error at PC 0x60104AD4, address 0xE2B02E1 .....

Based on troubleshooting documents on Cisco's site it recommends 
running show region giving this result:

Region Manager:

       Start         End     Size(b)  Class  Media  Name
  0x0E000000  0x0FFFFFFF    33554432  Iomem  R/W    iomem2
  0x20000000  0x21FFFFFF    33554432  Iomem  R/W    iomem
  0x5E000000  0x5FFFFFFF    33554432  Iomem  R/W    iomem2:(iomem2_cwt)
  0x60000000  0x6DFFFFFF   234881024  Local  R/W    main
  0x60008940  0x61313B23    19968484  IText  R/O    main:text
  0x61314000  0x61E3319F    11661728  IData  R/W    main:data
  0x61E331A0  0x621233BF     3080736  IBss   R/W    main:bss
  0x621233C0  0x6DFFFFFF   200133696  Local  R/W    main:heap
  0x70000000  0x71FFFFFF    33554432  Iomem  R/W    iomem:(iomem_cwt)
  0x80000000  0x8DFFFFFF   234881024  Local  R/W    main:(main_k0)
  0xA0000000  0xADFFFFFF   234881024  Local  R/W    main:(main_k1)


...which shows the address 0xE2B02E1 (or 0x0E2B02E1) is in the range 
for iomem2 and appears to be a hardware problem. My question is, what 
hardware is this memory contained in? Is this the I/O controller of 
the router? Would the recommended action be to replace the I/O 
controller? We've had reboots on this router before, but not in quite 
some time. The previous ones seemed to be software bugs according to 
TAC which went away up until now with IOS 12.2.27 mainline (what the 
router is presently running when this crash occurred).

I think I'm already pretty clear on this but any additional input or 
suggestions are appreciated. I may still open a TAC case but the 
answer seemed pretty obvious (except for that iomem2 refers to in 
hardware exactly).

Thanks!

Vinny Abello
Network Engineer
Server Management
vinny at tellurian.com
(973)300-9211 x 125
(973)940-6125 (Direct)
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