Cisco Systems C7200 manual Overview, Configuration Tasks

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C H A P T E R 4

Configuring the VSA

This chapter contains the information and procedures needed to configure the C7200-VSA (VPN Services Adapter). This chapter contains the following sections:

•Overview, page 4-1

•Configuration Tasks, page 4-1

•Configuration Examples, page 4-18

•Basic IPSec Configuration Illustration, page 4-19

•Troubleshooting Tips, page 4-21

•Monitoring and Maintaining the VSA, page 4-23

Overview

The VSA in the I/O controller slot provides encryption services for the I/O controller port in the Cisco 7204VXR or Cisco 7206VXR router with a NPE-G2 processor. If you have previously configured IPSec on the router and you install a VSA, the VSA automatically performs encryption services.

Note The Cisco 7204VXR and the 7206VXR routers support a single VSA.

There are no interfaces to configure on the VSA.

This section only contains basic configuration information for enabling encryption and IPSec tunneling services. Refer to the “IP Security and Encryption” part of the Security Configuration Guide and the Security Command Reference guide for detailed configuration information on IPSec, IKE, and CA.

Configuration Tasks

On power up, the VSA is fully functional and does not require any configuration commands. However, for the VSA to provide encryption services, you must complete the steps in the following sections:

•Using the EXEC Command Interpreter, page 4-2(required)

•Configuring an IKE Policy, page 4-2(required)

•Configuring a Transform Set, page 4-4(required)

•Configuring IPSec, page 4-8(required)

C7200 VSA (VPN Services Adapter) Installation and Configuration Guide

	OL-9129-02	4-1

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Contents Text Part Number OL-9129-02 Corporate HeadquartersPage N T E N T S Preventing Electrostatic Discharge Damage 2 Creating Dynamic Crypto Maps 4 OL-9129-02 Audience PrefaceChapter Title Description ObjectivesOrganization Cisco.com Related DocumentationObtaining Documentation Product Documentation DVD Ordering Documentation Documentation FeedbackCisco Product Security Overview Product Alerts and Field Notices Reporting Security Problems in Cisco ProductsCisco Technical Support & Documentation Website Obtaining Technical AssistanceObtaining Additional Publications and Information Submitting a Service RequestDefinitions of Service Request Severity Xiv Data Encryption Overview OverviewVSA Overview VSA Module Front View Screws Handle Status LED lightHardware Required FeaturesThis section describes the VSA features, as listed in Table Feature Description/BenefitMIBs Supported Standards, MIBs, and RFCsPerformance StandardsEnabling/Disabling Scheme Command PurposeEnabling/Disabling the VSA Disabling the VSA during OperationLEDs Condition System is ConfiguredCommand Description of VSA Behavior Cisco 7204VXR Router ConnectorsSee -2for the VSA connectors Slot LocationsCisco 7204VXR Router Front View Port adapter VSA in I/O controller slot Port adapter leverCisco 7206VXR Front View Cisco 7206VXR RouterHardware and Software Requirements Required Tools and EquipmentPlatform Software RequirementsHardware Requirements RestrictionsOnline Insertion and Removal OIR Safety GuidelinesSafety Warnings Preventing Electrostatic Discharge Damage Electrical Equipment GuidelinesPreparing for Installation OL-9129-02 VSA circuit board is sensitive to ESD damage Handling the VSAThis section describes how to remove and install the VSA VSA Removal and InstallationRemoving and Installing the VSA VSA Removal and Installation OL-9129-02 Overview Configuration TasksConfiguring an IKE Policy Using the Exec Command InterpreterSignatures as the authentication method Key Management Protocol Isakmp policy configurationConfig-isakmp mode Optional Specifies the authentication method within an IKEDisabling VSA Optional Configuring a Transform SetDefining a Transform Set Transform type Description Selecting Appropriate Transforms Crypto Transform Configuration ModeIPSec Protocols AH and ESP Changing Existing Transforms Configuring IPSecEnsuring That Access Lists Are Compatible with IPSec Setting Global Lifetimes for IPSec Security AssociationsStep Command Purpose Creating Crypto Map Entries Creating Crypto Access ListsExits crypto-map configuration mode and return to Only one transform set can be specified when IKE isAuthenticator keys if the transform set includes an ESP authenticator algorithmCreating Dynamic Crypto Maps For this crypto access list Optional Accesses list number or name of anExtended access list. This access list determines If this is configured, the data flow identity proposedApplying Crypto Map Sets to Interfaces Monitoring and Maintaining IPSecRouter# show crypto isakmp policy Verifying IKE and IPSec ConfigurationsVerifying the Configuration Currentpeer 172.21.114.67 PERMIT, flags=originisacl This section provides the following configuration examples Configuration ExamplesConfiguring IKE Policies Example Configuring IPSec Configuration ExampleCrypto map is applied to an interface Basic IPSec Configuration IllustrationRouter a Configuration Specify the parameters to be used during an IKE negotiation Router B ConfigurationTransform set defines how the traffic will be protected Router# show diag Troubleshooting TipsTunnel I/F Monitoring and Maintaining the VSA Using Deny Policies in Access ListsConfiguration Guidelines and Restrictions Monitor and Maintenance CommandsD E Set session-key command Set transform-set command Sa command, clear crypto Entries, creatingSet pfs command Handling VPN Acceleration Module see VAM 1 Features Handling Monitoring and maintaining 4 OverviewIN-4