Adding Processing CPU Cores to the Hardware

You must manually configure the applicable number of CoreXL Firewall instances in the cpconfig menu (see Configuring IPv4 and IPv6 CoreXL Firewall instances).

Important Notes for Cluster:

You must configure the CoreXL in the same way on all the cluster Two or more Security Gateways that work together in a redundant configuration - High Availability, or Load Sharing. members.
If you enable CoreXL, disable CoreXL, or change the number of CoreXL Firewall instances, you should treat this change as a version upgrade.

Schedule a full maintenance window and follow the instructions in the R81 Installation and Upgrade Guide - Chapter Upgrading ClusterXL Deployments.

Perform either a Minimal Effort Upgrade procedure (requires downtime), or a Zero Downtime Upgrade procedure (no downtime, but active connections are lost). Instead of the version upgrade, configure the CoreXL on each cluster member Security Gateway that is part of a cluster..