The system uptime refers to the time that the chassis was powered on and has at least one supervisor module controlling the
switch. Use the reset command to reinitialize the system uptime. On switches that use dual supervisors, nondisruptive upgrades and switchovers
do not reinitialize the system uptime, which means that the system uptime is contiguous across such upgrades and switchovers.
The kernel uptime
refers to the time since the NX-OS software was loaded on the supervisor
module. Use the
to reinitialize the kernel uptime.
The active supervisor
uptime refers to the time since the NX-OS software was loaded on the active
supervisor module. The active supervisor uptime can be lower than the kernel
uptime after nondisruptive switchovers.
You can use the
command to view the start time of the system, uptime of the
kernel, and the active supervisor.
This example shows
how to display the supervisor uptime:
switch# show system uptime
System start time: Fri Aug 27 09:00:02 2004
System uptime: 1546 days, 2 hours, 59 minutes, 9 seconds
Kernel uptime: 117 days, 1 hours, 22 minutes, 40 seconds
Active supervisor uptime: 117 days, 0 hours, 30 minutes, 32 seconds
For more information on high availability, see chapter 1,