[c-nsp] 4006 weirdness

[Chris Knipe]

Hi,

I have a legacy 4006 Chasis with a SUP3, recently started giving  
issues.  I know it's EOL, and more than likely needs to be replaced,  
but any assistance if possible, would be appreciated.

I'm getting CRC32 errors for NVRAM, always at byte 0x54000000

i.e.
Switch#sh ver
Cisco Internetwork Operating System Software
IOS (tm) Catalyst 4000 L3 Switch Software (cat4000-IS-M), Version  
12.1(8a)EW,  RELEASE SOFTWARE (fc1)
TAC Support: http://www.cisco.com/tac
Copyright (c) 1986-2002 by cisco Systems, Inc.
Compiled Thu 24-Jan-02 17:34 by ccai
Image text-base: 0x00000000, data-base: 0x00AA2B8C


CRC32 failed for NVRAM at 0x54000000
Erasing NVRAM area at 0x54000000
ROM:
Switch uptime is 19 hours, 7 minutes
System returned to ROM by reload
CRC32 failed for NVRAM at 0x54000000
Erasing NVRAM area at 0x54000000

System restarted at 09:26:23 SAST Fri Nov 13 2009
Running default software

cisco WS-C4006 (MPC8245) processor (revision 7) with 262144K bytes of memory.
Processor board ID FOX0520S0M4
Last reset from Reload
96 FastEthernet/IEEE 802.3 interface(s)
2 Gigabit Ethernet/IEEE 802.3 interface(s)
467K bytes of non-volatile configuration memory.

Configuration register is 0x0
CRC32 failed for NVRAM at 0x54000000
Erasing NVRAM area at 0x54000000

What's worring me even more at this stage:
Switch#sh bootvar
CRC32 failed for NVRAM at 0x54000000
Erasing NVRAM area at 0x54000000

BOOT variable does not exist
CRC32 failed for NVRAM at 0x54000000
Erasing NVRAM area at 0x54000000

CONFIG_FILE variable does not exist
CRC32 failed for NVRAM at 0x54000000
Erasing NVRAM area at 0x54000000

BOOTLDR variable does not exist
Configuration register is 0x0
CRC32 failed for NVRAM at 0x54000000
Erasing NVRAM area at 0x54000000


FYI:
Switch#sh module

Mod  Ports Card Type                              Model             Serial No.
----+-----+--------------------------------------+-----------------+-----------
  1      2  1000BaseX (GBIC) Supervisor Module     WS-X4014           
JAB063505JN
  2     48  10/100BaseTX (RJ45)                    WS-X4148-RJ        
JAB04100A1Q
  3     48  10/100BaseTX (RJ45)                    WS-X4148-RJ        
JAB0412056T

  M MAC addresses                    Hw  Fw                Sw              Stat
--+--------------------------------+---+-----------------+---------------+-----

CRC32 failed for NVRAM at 0x54000000
Erasing NVRAM area at 0x54000000
  1 0006.28c0.ff00 to 0006.28c1.02ff 2.1                   12.1(8a)EW,     Ok
  2 0001.42f6.9210 to 0001.42f6.923f 2.3                                   Ok
  3 0001.42f6.81c0 to 0001.42f6.81ef 2.3                                   Ok


Is the SUP pretty much dead?  Everything is still running fine from  
the face of it, but I'm really concerned about these errors....

Regards,
Chris