HP Enterprise File Services WAN Accelerator manual Failover Support on

Page 71

The HP EFS WAN Accelerators use the following methods to communicate with routers:

‹ Unicast (User Datagram Protocol Packets). The HP EFS WAN Accelerator is

configured with the IP address of each router. If additional routers are added to the service group, they must be added on each HP EFS WAN Accelerator.

‹ Multicast. The HP EFS WAN Accelerator is configured with a multicast group. If additional routers are added, you do not need to add or change configuration settings on the HP EFS WAN Accelerators.

All Transmission Control Traffic (TCP) traffic is redirected by default. You can configure specific source or destination ports to be redirected. For detailed information, see “TCP Port Redirection” on page 80.

For other types of redirection filtering such as the Internet Protocol (IP) address, you configure Access Control Lists (ACLs) on the routers and add it to the service group. For detailed information, see “Specific Traffic Redirection” on page 81.

Traffic is redirected using one of the following schemes:

‹ gre (Generic Routing Encapsulation). Each data packet is encapsulated in a

GRE packet with the HP EFS WAN Accelerator IP address configured as the destination. This scheme is applicable to any network.

‹ l2 (Layer-2). Each packet Media Access Control (MAC) address is rewritten with an HP EFS WAN Accelerator MAC address. This scheme is possible only if the HP EFS WAN Accelerator is connected to a router at Layer-2.

‹ either. The either value uses l2 (Layer-2) first—if Layer-2 is not supported, gre is used.

 

You can load-balance using WCCP. Traffic is redirected based on a hashing scheme

 

and the weight of the HP EFS WAN Accelerators. You can hash on a combination of

 

the source IP address, destination IP address, source port, or destination port. The

 

default weight is based on the HP EFS WAN Accelerator model number. (The weight

 

is heavier for models that support more connections.) You can modify the default

 

weight. For detailed information, see “Load Balancing” on page 81.

 

 

You can also provide failover support using WCCP. In a failover configuration, the HP

 

EFS WAN Accelerators periodically announce themselves to the routers. If an HP EFS

 

WAN Accelerator fails, traffic is redirected to the working HP EFS WAN Accelerators.

 

To configure failover support where the passive HP EFS WAN Accelerator takes over

 

if there is a failure in the active HP EFS WAN Accelerator, you simply configure the

 

weight for the backup HP EFS WAN Accelerator to be 0. For detailed information, see

 

“Failover Support” on page 81.

 

Basic Steps

The following steps summarize how to configure WCCP on a client-side HP EFS

 

WAN Accelerator with an out-of-path server-side HP EFS WAN Accelerator.

 

 

 

IMPORTANT: This is an example of one type of WCCP deployment. You can also have

 

deployments with both HP EFS WAN Accelerators configured as in-path devices and WCCP

 

configured on one of them. Contact HP technical support for further information at http://

 

www.hp.com.

 

 

 

 

HP STORAGEWORKS ENTERPRISE FILE SERVICES WAN ACCELERATOR 2.1.5 DEPLOYMENT GUIDE

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7 - WCCP DEPLOYMENTS

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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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