Cisco Nexus 5600 Series - I Commands

Snapshot
Use the snapshot command to capture the running states of selected features and to store the running states
on the persistent storage media.
You can use snapshots to compare the state of a switch before it went into maintenance mode and after it
came back to normal mode. The snapshot process consists of three parts:
•
Creating a snapshot of the states of a few preselected features on the switch and storing them on the
persistent storage media.
•
Listing the snapshots taken at various time intervals and managing them.
•
Comparing snapshots and showing the summary and details of each feature.
There are two types of snapshots:
• System-generated snapshot—This is generated by the system when you use the [no] system mode
maintenance command. The system creates the before_maintenance snapshot just before the system
goes into maintenance mode. The system creates the after_maintenance snapshot just before the system
goes into normal mode. The system overwrites any old snapshots when you use the [no] system mode
maintenance command. Use the snapshot delete {all | snapshot-name} command to delete the
system-generated snapshots.
In certain scenarios, the system-generated after_maintenance snapshot may be taken when hardware
programming is ongoing. In such cases, we recommend taking a user-generated snapshot after the system
has completed hardware programming and is in a stable state. You can then compare the new
after_maintenance snapshot with the before_maintenance snapshot.
Starting with Cisco NX-OS release 8.0(1), the [no] system mode maintenance command has been
enhanced to execute a normal mode profile and activate a timer ensuring that sufficient time is provided
for the switch to complete any hardware programming that may be going on before the after_maintenance
snapshot is taken. Once the timer expires, the after_maintenance snapshot is taken in the background
and a new warning syslog message, MODE_SNAPSHOT_DONE, is sent after the snapshot is complete.
The default delay timer value is 120 seconds. The output of the [no] system mode maintenance command
displays the delay timer value, in seconds, after which the after_maintenance snapshot is generated:
The after_maintenance snapshot will be generated in <delay> seconds
After that time, please use 'show snapshots compare before_maintenance after_maintenance'
to check the health of the system
Use the system mode maintenance snapshot-delay [delay-in-seconds] command to change the delay
timer value. The delay timer range is from 0 to 65535.
Use the show maintenance snapshot-delay command to display the snapshot delay timer value.
• User-generated snapshot—Use the snapshot create name description command to create a user-generated
snapshot. Use thesnapshot delete {all | snapshot-name} command to delete user-generated snapshots.
Cisco Nexus 5600 Series NX-OS System Management Configuration Guide, Release 7.x
OL-31641-01 287
Configuring GIR (Cisco NX-OS Release 7.3(0)N1(1))
Snapshot