2009.6.25 Upgrading Firewalls in Failover Mode—Active-Standby

以下的步驟非常的清楚明瞭

1. Download the new OS image into the primary firewall
2. Save the running configuration on the primary unit
3. Power off the primary unit and remove its network connections
4. Restore power to the primary unit
• Verify that the new operating system release is loaded and that it appears to run correctly
5. Power the primary unit off again and reconnect its interface connections.
6. Download the new OS image into the secondary unit
7. Power off the secondary unit and restore power to the primary unit
8. Remove network connections to the secondary unit
9. Restore power to the secondary unit
• Verify that the new operating system release is loaded and that it appears to run correctly
10. Power off the secondary unit again, and then reconnect its interface connections.
11. Restore power to the secondary unit again
12. The secondary unit should boot up and assume the standby failover role.