R21xx-HP FlexFabric 11900 Fundamentals Configuration Guide

Figure 35 System startup process

Upgrade methods

radin

method Software t

Remarks

Upgrading from the CLI:

Non-ISSU method

• BootWare image

• Comware images

(excluding patches)

This method is disruptive. You must reboot the

entire device to complete the upgrade.

ISSU method Comware images

The ISSU method enables a software upgrade

without service disruption.

Use this method for an IRF fabric or

MPU-redundant device.

For more information about ISSU, see "ISSU

overview."

Upgrading from the Boot

• BootWare image

• Comware software

images

Use this method when the device cannot start up

correctly.

IMPORTANT:

Upgrade an IRF fabric from the CLI rather than the

Boot menu.

The Boot menu method increases the service

downtime, because it requires that you upgrade

the member devices one by one.

This chapter only covers upgrading software from the CLI without using ISSU.

Start

Finish

Press Ctrl+B

promptly?

BootWare runs

Startup software images

run

System starts up and CLI

appears.

Enter Boot menu to

upgrade BootWare or

startup software

images

Yes