R211x-HP Flexfabric 11900 Fundamentals Command Reference

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{ Incremental upgrade—Performs a process-level active/standby switchover for the processes to
be upgraded.
{ Reboot upgrade or ISSU upgrade—Reboots the current active MPU with the old software
version to cause the upgraded MPU to become the new active MPU and upgrades the service
cards and switching fabric cards.
• For an incompatible version, this command reboots the current active MPU, the service cards, and
the switching fabric cards with the new software version, causing the upgraded MPU to become the
new active MPU. After the reboot, the original active MPU, the service cards, and the switching
fabric cards are upgraded, and the ISSU process ends.
In IRF mode, this command is necessary only if the IRF fabric has multiple members or has only one
member but the member has two MPUs.
If the IRF fabric has multiple members:
• For a compatible version, this command depends on the ISSU method:
{ Incremental upgrade—Performs a process-level master/subordinate switchover for the
processes to be upgraded.
{ Reboot upgrade or ISSU upgrade—Reboots the current master with the old software version to
cause the upgraded subordinate member to become the new master.
• For an incompatible version—The issu load command splits the IRF fabric into two fabrics, with the
upgraded members forming a new fabric. The issu run switchover command reboots and upgrades
the old IRF fabric. After startup, the old fabric's members join the new IRF fabric as subordinate
members and the ISSU process ends.
If the IRF fabric has only one member but the member has two MPUs:
• For a compatible version, this command depends on the ISSU method:
{ Incremental upgrade—Performs a process-level active/standby switchover for the processes to
be upgraded.
{ Reboot upgrade or ISSU upgrade—Reboots the current active MPU with the old software
version to cause the upgraded MPU to become the new active MPU and upgrades the service
cards and switching fabric cards.
• For an incompatible version—Reboots the current active MPU and the service cards and switching
fabric cards with the new software version, causing the upgraded MPU to become the new active
MPU. After the reboot, the original active MPU and the service cards and switching fabric cards are
upgraded and the ISSU process ends.
During a reboot upgrade to a compatible version, the service cards and switching fabric cards reboot to
load the new software from the upgraded MPU, which results in a transient service outage on the cards.
When you execute the issu run switchover command during an ISSU to a compatible version, the system
starts the automatic-rollback timer. If you do not execute the issu accept or issu commit command before
the timer expires, the system automatically rolls back to the original software configuration.
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 switchover 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.