Contents

Introduction to ClusterXL  Synchronizing Connection Information Across the Cluster  Sticky Connections  High Availability and Load Sharing in ClusterXL  Configuring ClusterXL  Working with OPSEC Certified Clustering Products  Monitoring and Troubleshooting Gateway Clusters  ClusterXL Advanced Configuration     Working with VPNs and Clusters     Working with NAT and Clusters     Working with VLANS and Clusters     Monitoring the Interface Link State     Link Aggregation and Clusters        Overview        Link Aggregation - High Availability Mode           Simple Redundant Topology           Fully Meshed Redundancy           Bond Failover           Creating an Interface Bond in High Availability Mode              Removing IP Addresses from Slave Interfaces              Setting Slave Interfaces as Disconnected              Defining the Interface Bond              Verifying that the Bond is Functioning Properly           Failover Support for VLANs        Link Aggregation - Load Sharing Mode        Defining VLANs on an Interface Bond        Performance Guidelines for Link Aggregation        ClusterXL Commands for Interface Bonds        Troubleshooting Bonded Interfaces     Advanced Cluster Configuration     Defining Disconnected Interfaces     Configuring Policy Update Timeout     Enhanced 3-Way TCP Handshake Enforcement     Configuring Cluster Addresses on Different Subnets     Moving from a Single Gateway to a ClusterXL Cluster     Adding Another Member to an Existing Cluster     Configuring ISP Redundancy on a Cluster     Enabling Dynamic Routing Protocols in a Cluster Deployment  High Availability Legacy Mode  Example cphaprob Script  Index