HP Enterprise File Services WAN Accelerator manual Failover Mode

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For detailed information about bypass card status lights, see the HP StorageWorks

Enterprise File Services WAN Accelerator Bypass NIC Installation Guide.

If there is a serious problem with the HP EFS WAN Accelerator or it is not powered on, it goes into bypass mode to prevent a single point of failure. If the HP EFS WAN Accelerator is in bypass mode, you are notified in the following ways:

‹The Intercept/Bypass status light is active. For detailed information about the status lights for each of the bypass cards, see the HP StorageWorks Enterprise File Services WAN Accelerator Bypass NIC Installation Guide.

‹Critical is displayed in the status bar of the Management Console.

‹Simple Network Management Protocol (SNMP) traps are sent (if you have set this option).

‹The event is logged to system logs (syslog) (if you have set this option).

‹Email notifications are sent (if you have set this option).

In an HP EFS WAN Accelerator in-path configuration, in the case of a failure, the appliance automatically switches to bypass mode. Traffic that was passed-through is uninterrupted. Traffic that was optimized might be interrupted, depending on the behavior of the application-layer protocols. When connections are restored, they succeed, although without optimization.

When the fault is corrected, new connections that are made receive optimization: however, connections made during the fault are not. To force all connections to be optimized, enable the kickoff feature. Generally, connections are short lived and kickoff is not necessary. For detailed information about enabling the kickoff feature, see the HP Enterprise File Services WAN Accelerator Management Console User Guide.

TIP: You can close old connections in the Reports: Current Connections page of the

Management Console. For detailed information, see the HP Enterprise File Services WAN

Accelerator Management Console User Guide.

In an out-of-path deployment, if the HP EFS WAN Accelerator fails, the first connection from the client fails. After detecting that the HP EFS WAN Accelerator is down, an HP EFS WAN Accelerator-pingchannel is setup from the client-side HP EFS WAN Accelerator to the server-side HP EFS WAN Accelerator. Subsequent connections are passed through unoptimized. When the HP EFS WAN Accelerator- ping succeeds, processing is restored and subsequent connections are intercepted and optimized. For detailed information about the HP EFS WAN Accelerator-pingcommand, see the HP StorageWorks Enterprise File Services WAN Accelerator Command-Line Interface Reference Manual.

Failover Mode

You can deploy redundant HP EFS WAN Accelerators in your network to ensure optimization continues if there is a failure in one of the HP EFS WAN Accelerators. If the HP EFS WAN Accelerator is in failover mode:

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1 - DESIGNING AN HP EFS WAN ACCELERATOR DEPLOYMENT

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Contents HP StorageWorks Enterprise File Services WAN Accelerator 407118-001Legal and notice information Contents Chapter Policy-Based Routing Deployments Wccp DeploymentsProxy File Service Deployments Radius and TACACS+ AuthenticationSerial Cluster and Cascade Deployments 107 Glossary 113 Index 117Introduction About This GuideOrganization of This Guide Document Conventions BoldfaceAntivirus Compatibility Hardware and Software DependenciesEthernet Network Compatibility Additional Resources Related Reading Contacting HP HP Storage Web SiteIntroduction Designing an HP EFS WAN Accelerator Deployment Introduction to the HP EFS WAN AcceleratorTransaction Acceleration Virtual Window ExpansionDesign and Deployment Overview Transaction PredictionDesigning AN HP EFS WAN Accelerator Deployment Bypass Mode Definition of TermsFailover Mode Designing AN HP EFS WAN Accelerator Designing AN HP EFS WAN Accelerator Deployment In-Path Deployments ‹ In-Path,Server-Side, One to One Deployment onBasic Steps Client-Side Introduction to Physical In-Path DeploymentsIn-Path, Failover Support Deployment Setup Advanced Networking Failover Settings In-Path, Two Routing Points Deployment Basic Steps Server-SideIn-Path, Server-Side Deployment Basic Steps Client-Side Basic Steps Server-SideIn-Path, Server-Side, One to One Deployment In-Path, Server-Side DeploymentFollowing figure illustrates the server-side of the network Setup Advanced Networking Failover Settings Virtual In-Path Network Deployments Introduction to Virtual In-Path DeploymentsIn-Path, Load Balanced, Layer-4 Switch In-Path, Load-Balanced, Layer-4 Switch Deployment Setup Optimization Service General Settings Out-of-Path Network Deployments Introduction to Out-of-Path DeploymentsOut-of-Path, Failover Deployment Physical Out-of-Path DeploymentOut-of-Path, Server-Side, Failover Support Deployment Setup Optimization Service In-Path Rules Out-of-Path, Static Cluster Deployment Static Cluster DeploymentSetup Optimization Service In-Path Rules, Fixed Target Hybrid In-Path and Out-of-Path Deployment Basic StepsServer-Side Client-SideSetup Optimization Service In-Path Rules Basic Steps Server-Side OUT-OF-PATH Network Deployments Configuring Connection Forwarding Introduction to Connection ForwardingNeighbors Connection Forwarding Connection Forwarding in an Asymmetric NetworkConfiguring Connection Forwarding One-to-One Failover DeploymentConfiguring Connection Forwarding Using Management Console‹ Click Update Settings Configuring Connection Forwarding Using the CLI ForwardingPolicy-Based Routing Deployments ‹ Symmetric Deployments with PBR, Autodiscovery, and CDP onIntroduction to PBR Overview of CDPHow PBR works on a Cisco 6500 Platform Version 12.217d SXB1 Wccp PBRAutodiscovery, and CDP on Configuring PBR Using Asymmetric HP EFS WAN Accelerator Deployments With PBRSide router To configure the client- side HP EFS WAN AcceleratorTo configure the client Configuring PBR Using Management Console Setup Optimization Service General Settings Setup Optimization Service In-Path Rules Basic Steps Client-Side Basic Steps Server-Side PBR Between VLANs PBR Between VLANsTo configure the HP To configure the CiscoEFS WAN Accelerator RouterSet of commands EFS WAN AcceleratorsPOLICY-BASED Routing Deployments POLICY-BASED Routing Deployments Symmetric Deployments with PBR Autodiscovery, and CDP POLICY-BASED Routing Deployments Troubleshooting ‹ Troubleshooting on Wccp DeploymentsBasic Wccp Configuration Introduction to WccpFailover Support on Wccp CLI Commands ‹ To configure a service groupService group Accelerator Basic Wccp ConfigurationConnecting Wccp router Configuring Client-Side HPTo configure Accelerator Configuring Wccp Using the Management ConsoleTo add the Wccp service group to Enable Wccp on your router Navigate to the Setup Advanced Networking Wccp Groups Setup Service, Wccp Groups To define in-path rules to reach the server- side appliance Basic Steps Server-Side Dual Wccp Deployment Wccp 3640 routerIp cef Wccp 6209 router No ip http serverAdditional Wccp Features To configure the server-side HP EFS WAN AcceleratorTo set the password SecurityMulticast TCP Port RedirectionTo configure specific traffic redirection on the router To change the hashing scheme and assign a weightLoad Balancing Failover SupportTroubleshooting Proxy File Service Deployments Introduction to PFSProxy File Service Description Term PFS TermsPFS Operating Modes How Does PFS Work? When to Use PFSWhen to use Global Mode Configuring PFS Using the Management Console To join a domain forSetup Proxy File Service PFS Configuration Required Setup Proxy File Service Shares Mode Description To map a share To synchronizeInitialize a share To modify share InformationTo view share status DetailsRadius and TACACS+ Authentication Introduction to AuthenticationConfiguring a Radius Server with FreeRADIUS Radius server To add acceptanceRequests on Configuring a TACACS+ Server with Free TACACS+ To downloadConfiguring AuthenticationSetup Authentication General Settings TACACS+ 104 105 106 Serial Cluster and Cascade Deployments Serial Cluster DeploymentSerial Cluster To configure HP EFS WAN Accelerator1 Basic Serial Cluster DeploymentWAN Accelerator3 To configure HP EFSWAN Accelerator2 Cascade Deployment Cascade DeploymentFixed-Target Rules Glossary 114 115 116 Index PBR118
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