Introduction

Important - Starting from R80.20, this guide is a part of the Installation and Upgrade Guide.

A Connectivity Upgrade (CU) lets you upgrade ClusterXL clusters on live systems without downtime.

In a Connectivity Upgrade:

• Connection failover is guaranteed.
• There is always at least one Active cluster member that handles the traffic.
• Connections are synchronized among cluster members, which run different Check Point software versions.

Connectivity Upgrade supports Dynamic Routing Synchronization when you upgrade to:

• R80.10 and above
• R77.30DR (R77.30 Jumbo Hotfix Take 198 and above)
• R77.20DR (R77.20 Jumbo Hotfix Take 198 and above)