HP Enterprise File Services WAN Accelerator manual Introduction to PBR, Overview of CDP

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For detailed information about the factors you must consider before you design and deploy the HP EFS WAN Accelerator in a network environment, see “Design and Deployment Overview” on page 11.

Introduction to PBR

PBR is a router configuration that allows you to define policies to route packets instead of relying on routing protocols. It is enabled on an interface basis and packets coming into a PBR-enabled interface are checked to see if they match the defined policies. If they do match, the packets are applied as the rule defined for the policy. If they do not match, packets are routed based on the usual routing table. The rules redirect the packets to a specific IP address.

Typically, you configure PBR on the client-side of the network to redirect traffic to an

HP EFS WAN Accelerator.

IMPORTANT: PBR must be enabled on the interfaces where the client traffic is arriving and disabled on the interfaces corresponding to the HP EFS WAN Accelerator, to avoid an infinite loop. (The HP EFS WAN Accelerator can bounce back the packets it receives either because it is not configured to optimize that traffic or its admission control is refusing new connections.)

On the server-side, the HP EFS WAN Accelerator is configured as, an out-of-path device, although it can also be configured with a PBR router with a specific PBR rule or as an in-path device.

In all cases, the HP EFS WAN Accelerator that intercepts traffic redirected with PBR is configured with in-path support and PBR support enabled. PBR policies can be based on the source IP address, destination IP address, protocol (TCP only), source port, or destination port.

Overview of CDP

CDP is a protocol used by Cisco routers and switches to obtain neighbor IP addresses, model, IOS version, and so forth. The protocol runs at the Open System Interconnection (OSI) layer 2 using the 802.3 Ethernet frame.

HP EFS WAN Accelerators can be deployed in several ways: physically in path, virtually in path, or out of path. Virtual in-path deployments require that a network device redirect packets to the HP EFS WAN Accelerators. Network devices that are capable of redirection are layer-4 switches, WCCP enabled routers and switches, and PBR enabled routers.

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6 - POLICY-BASED ROUTING DEPLOYMENTS

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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 BoldfaceEthernet Network Compatibility Hardware and Software DependenciesAntivirus 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 onIn-Path, Failover Support Deployment Introduction to Physical In-Path DeploymentsBasic Steps Client-Side 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 PBRTo configure the client To configure the client- side HP EFS WAN AcceleratorSide router 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 Connecting Basic Wccp ConfigurationAccelerator To configure Configuring Client-Side HPWccp router To add the Wccp service group to Configuring Wccp Using the Management ConsoleAccelerator 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 Initialize a share To synchronizeTo map a share To modify share InformationTo view share status DetailsRadius and TACACS+ Authentication Introduction to AuthenticationConfiguring a Radius Server with FreeRADIUS Requests on To add acceptanceRadius server 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 Accelerator2 To configure HP EFSWAN Accelerator3 Cascade Deployment Cascade DeploymentFixed-Target Rules Glossary 114 115 116 Index PBR118
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