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differentiated access - Access based on classification rules. Requests associated with one classification rule might be admitted while those associated with another are not.

differentiated performance -

Differentiated response time and throughput achieved via queuing, process control, and flow control. Differentiation may be based on request classifications.

I

IP precedence - Refers to the precedence field in the ToS byte (see ToS byte) in IP. See RFC 1812. In WebQoS, the low-order 2 bits are used.

L

load balancer - A network element that directs traffic to servers within a server farm based on the current load being processed by the servers.

M

management console - Allows you to define performance objectives for the components of the service and to monitor performance levels and SLOs.

N

network QoS protocols -

Protocols that are used for network quality of service. For example, IP ToS, RSVP, 802.1p, etc. Also known as QoS behavior.

P

persistent connection - An HTTP 1.1 feature in which a connection established with a web browser remains open for the servicing of additional subsequent requests coming from that browser.

priority - Request classifications determine how quickly a request is processed. Priorities are designated as high, medium, or low.

R

redirection - Redirection of a session to a specified URL that has WebQoS configured and running.

rejection - The decision not to satisfy a user request. A rejection is performed by an admission controller, typically in response to heavy load on the server. The user may come back at a later time when the server is less busy. The rejection may contain special incentives for the user to return later, such as a personalized promotion or an electronic coupon.

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Contents Edition E0801Legal Notices Contents Services, Sites, and Systems Troubleshooting Policy and Rule Descriptions Synopsis Arguments Return Value Sample Program Contents Printing History Page Understanding HP WebQoS Role and Benefits of HP WebQoS Role and Benefits of HP WebQoS Service WebQoS ConceptsRequest Classifications SessionsCapacity Protection SLOs, Thresholds, and Corrective ActionsRole and Benefits of HP WebQoS How WebQoS Fits Into Your Environment WebQoS in Your EnvironmentWebQoS Components WebQoS ComponentsComponent Installed On Description Management SCA ServiceWeb Services SCI ServiceHow WebQoS Fits Into Your Environment Chapter Setup WebQoS Software Installation WebQoS Configuration FilesSCA and Web Server Parameter Web Server ParametersDefault HTTP/1.1 MonitorInterval seconds SCA Parameters SCO Parameters Logging and Tracing Parameters Unix Only URL Encoding Parameters WebQoS setup Script Unix Restarting Individual WebQoS ComponentsRestarting WebQoS Components Unix Restarting WebQoS Components WindowsSingle Server Setup Continue? Multiple Server Setup Server 1 Setup Servers 2 and 4 Setup Server 3 Setup Opt/webqos/install/setup -r Removing WebQoSWebQoS setup Script Unix Chapter Management Console Management Console Login WebQoS Login Dialog BoxConsole Main Screen Management Console Main ScreenWindow Area Description Console Main Screen Services/Systems View Auto DiscoveryConsole Administration PasswordDomain Management Console Administration Chapter Templates Preconfigured and Default Templates Default TemplatesPreconfigured Templates Service Template DescriptionFor the service template Service Template StatisticsService Statistics StatisticsURL Group Statistics Service Template SLOs SLOsAdd/Edit Service Level Objectives Add/Edit SLOsAdd/Edit Corrective Actions Service Template Advanced AdvancedDefer Defer Corrective ActionRedirect Redirect Corrective ActionReject Reject Corrective ActionSite Template 10 Site Template DescriptionClassification Rules 11 Site Template Classification RulesAdd/Edit Classification Rules 12 Add/Edit Request Classifications Rules13 Site Template SLOs Add/Edit SLOs 15Add/Edit Corrective Actions Threshold Policies 16 Site Template Threshold PoliciesAdd/Edit Threshold Policies 17 Add Thresholds Dialog Box18Add/Edit Corrective Actions 19 Edit Site Configuration Advanced Dialog Box Session Timeouts 20 Site Advanced Session Timeouts Dialog BoxWeb Server Accept Threads Corrective Action Policy Details22 Defer Corrective Action 23 Redirect Corrective Action 24 Reject Corrective Action Site Statistics 25 Site Template StatisticsSite Template Site Template Chapter Services, Sites, and Systems Services Add a ServiceEdit a Service Move a ServiceDelete a Service Sites Add a SiteEdit a Site Move a SiteDelete a Site Microsoft IISIPlanet Web Server Starting and Stopping IISSystems Add a SystemDelete a System Systems Systems Chapter Statistics Service Statistics Service SLO Related StatisticsService SLO Related Statistics Service Session Control Statistics Service Session Control StatisticsService Defer Related Statistics Service Defer Related StatisticsSite Statistics Site StatisticsSite SLO Related Statistics Site SLO Related StatisticsSite Session Control Statistics Site Session Control StatisticsSite Statistics Site Statistics Chapter Logs and Filters Service Level Objectives View Service Level Objectives ViewSLOs, Thresholds, and the History Log SLOs, Thresholds, and the History Log History Log View History Log View SLO and Threshold Filters SLO and Threshold FiltersSLO Filters History Log Filter History Filters DialogChapter 103 Service and Site Statistics OpenView LogsSite Measurements Policy and Corrective Action Events Field Values Chapter 107 108 Troubleshooting Troubleshooting on Unix Management Console Error MessagesShared Memory Error Logging and Tracing Logging TracingMeasurement Logging Statistics LoggingChapter 113 Troubleshooting on Windows Problems with Shared MemoryResetting the Management Console Password Error Messages Viewable From the Management Console Logging and Tracing Registry Editor Window for WebQoS Deleting WebQoS Log and Trace Files118 Policy and Rule Descriptions Request Classification Rules Appendix a 121 Service Level Objectives for Site Policies Set in WebQoSService Level Objectives for the Service Threshold Policy Corrective Actions for SLO and Threshold Policy ViolationsCustomizing the Defer and Reject Web Pages 126 Appendix a 127 Request to be retried see Figure A-2 Figure A-2 Example of Custom Defer Page with LinkAppendix a 129 Expired see Figure A-3 Figure A-3 Example of Custom Defer Page with Popup DialogAppendix a 131 132 External Measurement API Using the External Measurement API Appendix B 135 WqCreateConnection SynopsisArguments Return ValueWqSendMeasurement Values in the following formatReturn Values Status WqCloseConnection Connection with WebQoS has been closedSample Program Appendix B 141 142 Glossary Class See request classification rule144 145 146 Index 148 149 150
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