All MIBs › SNMPv2-MIB › sysUpTime
sysUpTime
Module: SNMPv2-MIB
OID (symbolic): SNMPv2-MIB::sysUpTime
OID (numeric): 1.3.6.1.2.1.1.3
Node type: OBJECT-TYPE
Type: TimeTicks
Access: read-only
Description:
The time (in hundredths of a second) since the network management portion of the system was last re-initialized.
What is sysUpTime?
This counter tracks how many hundredths of a second have elapsed since the device's SNMP service last restarted. Network engineers monitor this to detect unexpected reboots or service restarts that might indicate a crash or maintenance activity. If sysUpTime suddenly drops from 10 million to 1 million, it signals the device (or just its SNMP agent) has restarted.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.2.1.1.3 snmpwalk -v2c -c public <target> SNMPv2-MIB::sysUpTime
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.2.1.1.3.1 snmpget -v2c -c public <target> SNMPv2-MIB::sysUpTime.1
Example output:
DISMAN-EVENT-MIB::sysUpTimeInstance = Timeticks: (16099122) 1 day, 20:43:11.22