HP Enterprise File Services WAN Accelerator manual One-to-One Failover Deployment

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If there are more than two possible paths, additional HP EFS WAN Accelerators must be installed on each path and configured as neighbors. Neighbors receive information in parallel (the delay introduced at connection set up is equal to the time it takes to get an acknowledgement from the furthest neighbor).

If one of the neighbor HP EFS WAN Accelerators reaches its optimization capacity limit, that HP EFS WAN Accelerator will not accept new connections, but it redirects packets to other neighbors for optimization.

One-to-One Failover Deployment

To ensure optimization in the event of a failure, a backup HP EFS WAN Accelerator can be added to each neighbor HP EFS WAN Accelerator in a one-to-one failover configuration.

In Figure 5-2there are two HP EFS WAN Accelerators on each path that are configured in a one-to-one failover mode. Each HP EFS WAN Accelerator must be a neighbor of the master and backup HP EFS WAN Accelerators on the other paths.

Figure 5-2.One-to-One Failover Deployment

HP EFS WAN Accelerator-2 and HP EFS WAN Accelerator-2B are configured as neighbors of HP EFS WAN Accelerator-1 which exchanges connection information with both of them so that if either HP EFS WAN Accelerator-2 or HP EFS WAN Accelerator-2B fails, the other redirects packets to HP EFS WAN Accelerator-1.

In Figure 5-2, packets from the server are redirected by HP EFS WAN Accelerator-2B unless it fails in which case they are redirected by HP EFS WAN Accelerator-2.

As long as one of the two failover HP EFS WAN Accelerators on each path is up, connections are intercepted. If the two HP EFS WAN Accelerators on the same path fail, connections stop being intercepted and optimized.

Configuring Connection Forwarding

The following section describes the basic steps for configuring connection forwarding.

HP STORAGEWORKS ENTERPRISE FILE SERVICES WAN ACCELERATOR 2.1.5 DEPLOYMENT GUIDE

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5 - CONFIGURING CONNECTION FORWARDING

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Contents 407118-001 HP StorageWorks Enterprise File Services WAN AcceleratorLegal and notice information Contents Chapter Wccp Deployments Policy-Based Routing DeploymentsGlossary 113 Index 117 Proxy File Service DeploymentsRadius and TACACS+ Authentication Serial Cluster and Cascade Deployments 107About This Guide IntroductionOrganization of This Guide Boldface Document ConventionsAntivirus Compatibility Hardware and Software DependenciesEthernet Network Compatibility Additional Resources Related Reading HP Storage Web Site Contacting HPIntroduction Introduction to the HP EFS WAN Accelerator Designing an HP EFS WAN Accelerator DeploymentVirtual Window Expansion Transaction AccelerationTransaction Prediction Design and Deployment OverviewDesigning AN HP EFS WAN Accelerator Deployment Definition of Terms Bypass ModeFailover Mode Designing AN HP EFS WAN Accelerator Designing AN HP EFS WAN Accelerator Deployment ‹ In-Path,Server-Side, One to One Deployment on In-Path DeploymentsBasic Steps Client-Side Introduction to Physical In-Path DeploymentsIn-Path, Failover Support Deployment Setup Advanced Networking Failover Settings Basic Steps Server-Side In-Path, Two Routing Points DeploymentBasic Steps Client-Side Basic Steps Server-Side In-Path, Server-Side DeploymentIn-Path, Server-Side Deployment In-Path, Server-Side, One to One DeploymentFollowing figure illustrates the server-side of the network Setup Advanced Networking Failover Settings Introduction to Virtual In-Path Deployments Virtual In-Path Network DeploymentsIn-Path, Load Balanced, Layer-4 Switch In-Path, Load-Balanced, Layer-4 Switch Deployment Setup Optimization Service General Settings Introduction to Out-of-Path Deployments Out-of-Path Network DeploymentsPhysical Out-of-Path Deployment Out-of-Path, Failover DeploymentOut-of-Path, Server-Side, Failover Support Deployment Setup Optimization Service In-Path Rules Static Cluster Deployment Out-of-Path, Static Cluster DeploymentSetup Optimization Service In-Path Rules, Fixed Target Client-Side Hybrid In-Path and Out-of-Path DeploymentBasic Steps Server-SideSetup Optimization Service In-Path Rules Basic Steps Server-Side OUT-OF-PATH Network Deployments Introduction to Connection Forwarding Configuring Connection ForwardingConnection Forwarding in an Asymmetric Network Neighbors Connection ForwardingOne-to-One Failover Deployment Configuring Connection ForwardingManagement Console Configuring Connection Forwarding Using‹ Click Update Settings Forwarding Configuring Connection Forwarding Using the CLI‹ Symmetric Deployments with PBR, Autodiscovery, and CDP on Policy-Based Routing DeploymentsOverview of CDP Introduction to PBRWccp PBR How PBR works on a Cisco 6500 Platform Version 12.217d SXB1Autodiscovery, and CDP on Asymmetric HP EFS WAN Accelerator Deployments With PBR Configuring PBR UsingSide 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 VLANsRouter To configure the HPTo configure the Cisco EFS WAN AcceleratorEFS WAN Accelerators Set of commandsPOLICY-BASED Routing Deployments POLICY-BASED Routing Deployments Symmetric Deployments with PBR Autodiscovery, and CDP POLICY-BASED Routing Deployments Troubleshooting Wccp Deployments ‹ Troubleshooting onIntroduction to Wccp Basic Wccp ConfigurationFailover Support on ‹ To configure a service group Wccp CLI CommandsService 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 Wccp 3640 router Dual Wccp DeploymentIp cef No ip http server Wccp 6209 routerSecurity Additional Wccp FeaturesTo configure the server-side HP EFS WAN Accelerator To set the passwordTCP Port Redirection MulticastFailover Support To configure specific traffic redirection on the routerTo change the hashing scheme and assign a weight Load BalancingTroubleshooting Introduction to PFS Proxy File Service DeploymentsPFS Terms Proxy File Service Description TermPFS Operating Modes How Does PFS Work? PFS When to UseWhen to use Global Mode To join a domain for Configuring PFS Using the Management ConsoleSetup Proxy File Service PFS Configuration Required Setup Proxy File Service Shares Mode Description To map a share To synchronizeInitialize a share Information To modify shareDetails To view share statusIntroduction to Authentication Radius and TACACS+ AuthenticationConfiguring a Radius Server with FreeRADIUS Radius server To add acceptanceRequests on To download Configuring a TACACS+ Server with Free TACACS+Authentication ConfiguringSetup Authentication General Settings TACACS+ 104 105 106 Serial Cluster Deployment Serial Cluster and Cascade DeploymentsSerial Cluster Basic Serial Cluster Deployment To configure HP EFS WAN Accelerator1WAN Accelerator3 To configure HP EFSWAN Accelerator2 Cascade Deployment Cascade DeploymentFixed-Target Rules Glossary 114 115 116 PBR Index118
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