[rancid] Cisco 3845 with a Cisco Unity Express unexplained hardware diffs

[Jose Leitao]

Hello,

I have a Cisco 3845 with a Cisco Unity Express module for which rancid
shows these diffs constantly:

retrieving revision 1.50
diff -U 4 -r1.50 192.168.0.1
@@ -301,11 +301,9 @@
 !Slot 1: type Integrated Service Engine, 1 ports
 !Slot 1: hvers 1.0 rev A0
 !Slot 1: hvers 1.0 rev A0
 !Slot 1: part 800-29801-01, serial FOC11111111
- !Slot 1: hvers 0.0 rev UNKNOWN
 !Slot 1: part 800-29814-01, serial FOC22222222
- !Slot 1: part 00-0000-00, serial 0

retrieving revision 1.51
diff -U 4 -r1.51 192.168.0.1
@@ -301,9 +301,11 @@
- Hide quoted text -
 !Slot 1: type Integrated Service Engine, 1 ports
 !Slot 1: hvers 1.0 rev A0
 !Slot 1: hvers 1.0 rev A0
 !Slot 1: part 800-29801-01, serial FOC11111111
+ !Slot 1: hvers 0.0 rev UNKNOWN
 !Slot 1: part 800-29814-01, serial FOC22222222
+ !Slot 1: part 00-0000-00, serial 0

retrieving revision 1.52
diff -U 4 -r1.52 192.168.0.1
@@ -301,11 +301,9 @@
- Hide quoted text -
 !Slot 1: type Integrated Service Engine, 1 ports
 !Slot 1: hvers 1.0 rev A0
 !Slot 1: hvers 1.0 rev A0
 !Slot 1: part 800-29801-01, serial FOC11111111
- !Slot 1: hvers 0.0 rev UNKNOWN
 !Slot 1: part 800-29814-01, serial FOC22222222
- !Slot 1: part 00-0000-00, serial 0

retrieving revision 1.53
diff -U 4 -r1.53 192.168.0.1
@@ -301,9 +301,11 @@
- Hide quoted text -
 !Slot 1: type Integrated Service Engine, 1 ports
 !Slot 1: hvers 1.0 rev A0
 !Slot 1: hvers 1.0 rev A0
 !Slot 1: part 800-29801-01, serial FOC11111111
+ !Slot 1: hvers 0.0 rev UNKNOWN
 !Slot 1: part 800-29814-01, serial FOC22222222
+ !Slot 1: part 00-0000-00, serial 0

In the Slot1 is a NME-CUE, what could this mean?:

!Slot 1: hvers 0.0 rev UNKNOWN
!Slot 1: part 00-0000-00, serial 0

I have another Cisco 3845 with a NME-CUE on the same slot without
incident. Both routers have the same IOS version
(adventerprisek9-mz.124-24.T1) and I recently opened a TAC case, but
since the above output seems to come from show inventory and show
diag, there wasn’t much they could do. In fact, running sh diag and
show inv from the CLI has never shown me the "Slot 1: hvers 0.0 rev
UNKNOWN" message.

Any ideas?

Thanks,
JL