Symptom
After 497 days, sysUpTime becomes 0 due to 32-bit OID limitation. Therefore, snmpEngineTime.0 variable is supposed to be workaround to the sysUpTime variable roll over.
However, from test in all XR devices, we see snmpEngineTime is rested when sysUpTime roll over as described in IOS bug, CSCeh49492 which addressed same issue.
Snmpd process :
RP/0/RP0/CPU0:crs1#show processes snmpd detail
Thu Jul 26 10:58:51.276 BDG
Job Id: 391
PID: 454917
Executable path: /disk0/hfr-base-3.8.4/bin/snmpd
Instance #: 1
Version ID: 00.00.0000
Respawn: ON
Respawn count: 1
Max. spawns per minute: 12
Last started: Thu Mar 3 01:56:41 2011 <<<
bash-3.00$ snmpwalk -v 2c -c xxx a.b.c.d 1.3.6.1.2.1.1.3
DISMAN-EVENT-MIB::sysUpTimeInstance = Timeticks: (123700445) 14 days, 7:36:44.45
bash-3.00$
bash-3.00$ snmpwalk -v 2c -c xxx a.b.c.d 1.3.6.1.6.3.10.2.1.3
SNMP-FRAMEWORK-MIB::snmpEngineTime.0 = INTEGER: 1238709 seconds
Conditions
Issue happens after 497 days.
