[rancid] Changes in "show inventory raw" every night on Cisco 6509 chassis

Tyler J. Wagner tyler at tolaris.com
Wed Sep 21 14:55:38 UTC 2011


I have a problem with rancid and one of my Cisco 6509 9-slot switch
chassis. I have two of them, nearly identical. One of them behaves normally
with rancid. On the other, the output of "show inventory raw" changes every
night. It is usually missing, some lines one night, then has them back the
next. So I get emails every night with:

Index: configs/switch01
retrieving revision 1.71
diff -u -4 -r1.71 switch01
@@ -288,8 +288,95 @@
  !NAME: "Gi1/35",                DESCR: "10/100/1000BaseT Gi1/35"
  !PID: 0x
  !VID: 0x
  !SN: 0x
+ !NAME: "Gi1/36",                DESCR: "10/100/1000BaseT Gi1/36"
+ !PID: 0x
+ !VID: 0x
+ !SN: 0x
+ !NAME: "Gi1/37",                DESCR: "10/100/1000BaseT Gi1/37"
+ !PID: 0x
+ !VID: 0x
+ !SN: 0x
+ !NAME: "Gi1/38",                DESCR: "10/100/1000BaseT Gi1/38"
+ !NAME: "module 5 device-1 temperature Sensor", DESCR: "module 5 device-1
temperature Sensor"
+ !NAME: "module 5 device-2 temperature Sensor", DESCR: "module 5 device-2
temperature Sensor"
+ !NAME: "module 5 asic-1 temperature Sensor", DESCR: "module 5 asic-1
temperature Sensor"
+ !NAME: "module 5 asic-2 temperature Sensor", DESCR: "module 5 asic-2
temperature Sensor"

The next night, the same email will have the above output with the lines
missing (prefixed by - signs).

The problem does not seem to happen when I run this command on console. The
output is consistent.

Does anyone have any ideas what is triggering, or how to solve this?


"... jingoism, racism, fear, religious fundamentalism: these are the
ways of appealing to people if you’re trying to organize a mass base
of support for policies that are really intended to crush them."
   -- Noam Chomsky, in "Understanding Power"

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