R211x-HP Flexfabric 11900 Fundamentals Command Reference

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Usage guidelines
In standalone mode, specify the slot number of the MPU for this command if the device has only one MPU.
If the device has two MPUs, specify the slot number of the standby MPU for this command. In either case,
this command performs the following operations:
• Examines the compatibility of the specified images with the running versions. The result might be
compatible or incompatible.
• Determines the ISSU methods.
The ISSU methods available for a compatible version include:
{ Incremental upgrade. During the upgrade, the involved processes will be upgrade.
{ ISSU reboot. During the upgrade, CPUs will be rebooted.
{ Reboot. During the upgrade, the device (if single-MPU) or the standby MPU (if dual-MPU) will
be rebooted.
The ISSU method for an incompatible version is always reboot.
• Uses the ISSU methods to upgrade the specified MPU, and configures the upgrade software images
as the main startup software images for the specified MPU.
In IRF mode:
• On a single-MPU, single-chassis IRF fabric, specify the member ID and slot number of the MPU for
this command.
• On a dual-MPU, single-chassis IRF fabric, specify the member ID and slot number of the standby
MPU for this command.
• On a multichassis IRF fabric, specify one or more subordinate members for this command.
In any of these cases, the command performs the following operations:
• Examines the compatibility of the specified images with the running versions. The result might be
compatible or incompatible.
• Determines the ISSU methods.
The ISSU methods available for a compatible version include:
{ Incremental upgrade. During the upgrade, the involved processes will be upgrade.
{ ISSU reboot. During the upgrade, CPUs will be rebooted.
{ Reboot. During the upgrade, the specified MPU or member devices will be rebooted.
The ISSU method for an incompatible version is always reboot.
• Uses the ISSU methods to upgrade the specified MPU or member devices, and configures the
upgrade software images as the main startup software images for the specified MPU or member
devices.
In IRF mode, a subordinate device automatically synchronizes the master device's configuration and
status data at reboot. This process takes time. You must wait for the synchronization to complete before
using the install load command on the subordinate device. To verify that the synchronization has
completed successfully, do the following:
• Use the display device command to verify that all cards of the subordinate device are in normal
state.
• Use the display mdc command to verify that all MDCs are in active state.
• Use the display system internal ha service-group command to verify that the Action field is 0 for
each service.
For more information about ISSU methods, see Fundamentals Configuration Guide.