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     Verifying that a Cluster is Working Properly     Monitoring Cluster Status Using SmartConsole Clients     ClusterXL Configuration Commands     How to Initiate Failover     Monitoring Synchronization (fw ctl pstat)     Troubleshooting Synchronization        Introduction to cphaprob [-reset] syncstat        Output of cphaprob [-reset] syncstat           Sync Statistics (IDs of F&A Peers - 1)           Other Member Updates           Sent Retransmission Requests           Avg |Missing Updates per Request           Old or too-new Arriving Updates           Unsynced Missing Updates           Lost Sync Connection (num of events)           Timed out Sync Connection           Local Updates           Total Generated Updates           Recv Retransmission requests           Recv Duplicate Retrans request           Blocking Scenarios           Blocked Packets           Max Length of Sending Queue           Avg Length of Sending Queue           Hold Pkts Events           Unhold Pkt Events           Not Held Due to no Members           Max Held Duration (ticks)           Avg Held Duration (ticks)           Timers           Sync tick (ms)           CPHA tick (ms)           Queues           Sending Queue Size           Receiving Queue Size        Synchronization Troubleshooting Options     ClusterXL Error Messages     Member Fails to Start After Reboot  ClusterXL Advanced Configuration  High Availability Legacy Mode  Example cphaprob Script  Index