Error Messages 151 | Intel 1520 specification

Appendix B

List of Procedures

Understanding cache hierarchies	135
HTTP cache hierarchies	135
ICP cache hierarchies	136
NNTP cache hierarchies	137
News article caching	138
The appliance as a news server	139
The appliance as a caching proxy news server	139
Supporting several parent news servers	139
Blocking particular groups	140
Clustering	140
Transparency	141
Posting	141
Maintaining the cache: updates and feeds	141
Configuring Access control	142
Obeying NNTP control messages	143
Client bandwidth throttling	143
Carrier-class architecture	143
Performance	143
High-availability	145
Node fault tolerance	147
Expansion capabilities	147
Centralized administration	148
Error Messages	151
HTML messages sent to clients	152
Standard HTTP response messages	154
Glossary	157
Index	163
Initially configuring and starting your system	8
Accessing the Manager UI	12
Reaching Monitor pages	18
Reaching the Dashboard page	18
Changing the selected node	20
Reaching the Node Page	20
Reaching the Graphs page	21
Reaching the Protocols page	21

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Intel 1520 manual Error Messages 151

Contents

Intel NetStructure 1520 Cache Appliance Copyright 2000, Intel Corporation. All rights reserved Contents Configuring the Appliance Using the Command-Line Interface Troubleshooting Problems 109 Error Messages 151 Changing network address configuration on the NIC Contents 106 Preface Bold Who should read this manualConventions used in this manual Convention Purpose Introduction Chapter Web proxy cache What is an Intel NetStructure Cache Appliance?Why use this caching appliance? Flexible cache architecture Intel NetStructure Cache Appliance features Broad protocol support Secure, single-point administrationMultithreading process support High-speed caching To find out about … See … How to use this guideSnmp Network Management Performance reportingPage Getting Started Starting the system for the first time Controls and physical features on your system Command-line interface‚ on Hhmmss Getting Started Accessing the Manager UI Dashboard Using Monitor and Configure mode Monitor mode frame Configure mode frame Verifying that caching works Using online helpAccessing the command-line interface Changing passwordsPage Monitoring Appliance Performance Using the Dashboard Accessing monitor pages Alert light Condition Description Resolving alarmsDashboard alert lights Exposing node detail Changing the selected node Using the Node Using the ARM Using the GraphsUsing the Protocols Using the Cache Using the Mrtg Using the Other Configuring the Appliance Using the Server Basics Accessing configure pages NetStructure Cache section Setting general optionsOption Description What are virtual IP addresses? Setting Web management optionsSetting virtual IP addressing options Using virtual IP addressing for node failover Adding entries to the Virtual IP address list Setting throttling of network connections Setting browser auto configuration optionsConfiguring load-shedding Enabling Snmp agents Option Definition Configuring Http Configuring Nntp Name and port see Option Definition FTP Configuring FTP Cache activation Freshness Storage For IMS If Modified Since revalidation requests Following table describes the variable conﬁguration options Variable content Using the Routing Using the SecurityLink displays the Change Administrator’s Password Setting Http parent caching options Establishing ICP peers Setting ICP options Field Description Option Description Setting server accelerator options Checking transparency Using the Host DatabaseChecking Wccp Configuring the host database Another invalid hostname message to the user Using the Snapshots Configuring DNS Reaching the Snapshots Using the Command-Line Interface Using the appliance after initial start-up Starting the command-line interfaceStarting the appliance the first time To do this Do this Navigating the command-line interface Changing network addresses configuration Using the setup menu Changing the DNS address and domain name Changing the controller speed and transmission modeChanging the gateway address Using the main menu Configuring time zone settingsConfiguring date and time settings Viewing current network address settings Starting the appliance Checking the status of the Server and ManagerStopping the appliance Viewing and maintaining versions of the software Installing a new version of the appliance software Application upgrade OS/Application upgrade Patch upgradeRunning a different version of the appliance software Deleting a version of the appliance software Clearing statistics Halting the System Rebooting the System Using the config menu Resetting to factory settingsPreparing a cache disk Setting general controls Configuring Http options Configuring protocol options Configuring Nntp options Conﬁguring Nntp servers Tag Description Following table describes the tags you can use in a rule Tag Description Examples Conﬁguring Nntp access If access is Authenticator is User is Pass is Following table lists the access directive options Configuring FTP options Configuring Secure Socket Layer SSL port Primary Destination Allowed Value Setting filter rules Action Value Secondary Specifier Allowed Value Setting remap rules Target Enabling caching for different protocols Configuring the cache Setting object freshness options Setting disk storage options Following table shows the options Configuring caching rules Request URL method use one of the following Destip=112.12.12.12 scheme=ftp action=never-cache Controlling client access to the appliance Configuring security options Controlling access to the Manager UI Configuring and maintaining ICP peers Configuring routing optionsViewing and modifying ICP rules Following table describes each ﬁeld Mcttl Example Enabling and disabling ICP Viewing current ICP settings Setting the ICP query timeout Setting the ICP port numberEnabling and disabling multicast in ICP Controlling parent proxy caching Action Tag Allowed Value Secondary Specifiers Allowed Value Action Tag Allowed Value Configuring Wccp options Enabling and disabling transparent redirection Configuring the Adaptive Redirection Module ARM Rule Description Configuring ARM bypass rules Rule Format Bypass rules have the following format Configuring load-shedding options Configuring the host database options Option Description Configuring logging options Progress Using the monitor menuViewing Node statistics Statistic Description Cache Statistics Description Viewing Protocol statisticsStatistic Description Network Server Statistics Description Client Statistics Description Operations Originating Statistics Description QueriesFrom this Node From ICP Peers Viewing Cache statistics Viewing Other statistics Statistic Description Using the expert menu Using the load menu Using the save menuUsing the logoff menu Troubleshooting Problems Rebooting your system from the CLI Rebooting your system Upgrading software Page Appendix a Caching Solutions and Performance Day in the life of a cache request Web proxy caching Cache miss Ensuring cached object freshness Last-Modiﬁed / Date header test Revalidating objectsHttp object freshness tests Expires header test Deciding whether to serve Http objects Default testRevalidate rules Configuring Http revalidation Configuring Http freshness options Caching Http alternates Configuring Http cachabilityTo cache or not to cache? Directive source Caching directives Transparent proxy caching Interception strategies Serving requests transparently Using a layer 4-aware switch to filter transparency requests Using a WCCP-enabled router for transparency Using policy-based routing to filter transparency requests ARM redirection Using a router to ﬁlter Http requests Appliance adaptive bypass Adaptive interception bypassMore about bypass rules Destination bypass Configuring bypass optionsStatic and dynamic adaptive bypass Source bypass Server acceleration How server acceleration works Advantages of server accelerationRetrieving requested documents Whereas the corresponding proxy request would look like this Web server redirects Understanding server acceleration mapping rules User Request Translated Request Examples of rules and translations User Request Origin Server Header Translated Header Http cache hierarchies Understanding cache hierarchies Miss ICP cache hierarchies Bombay Nntp cache hierarchies News article caching Appliance as a caching proxy news server Appliance as a news serverSupporting several parent news servers Several servers supplying different groups Blocking particular groupsClustering Several news servers supplying the same groups Pull the overview information for speciﬁed groups Maintaining the cache updates and feedsTransparency Posting Take a partial feed push for speciﬁed groups Configuring Access controlPull the articles for speciﬁed groups Dynamically subscribe to speciﬁed groups Carrier-class architecture Self-tuning DataFlow coreObeying Nntp control messages Client bandwidth throttling Fast space reclamation Fine-grained parallelismRaw-disk object store Alias-free caching Fast kernel packet engine AlarmsAdvanced protocol features High-availability Monitor Dashboard Virtual IP failover Expansion capabilities Node fault toleranceLoad shedding Centralized administration Client ACL Page Appendix B Error Messages Title Code Description Html messages sent to clients Appendix B Error Messages 153 Message Description Standard Http response messages Appendix B Error Messages 155 Page Glossary DNS ISP POP Wccp Page Index News server features