Intel 1520 - page 114

102 Intel NetStructure Cache Appliance Administrator’s Guide

The following table describes the protocol for the NNTP protocol. Statistics and descriptions exist for Client, Server, and Operations.

Total Connections The total number of HTTP server

connections since installation.

Transactions In Progress The total number of HTTP server

connections in progress.

Statistics Description

Client Open Connections The number of open NNTP

connections.

Bytes Read The number of NNTP client

request bytes read since

installation.

Bytes Written The number of NNTP client bytes

written since installation.

Server Open Connections The number of currently open

NNTP server connections.

Bytes Read The number of bytes read from

parent NNTP servers since

installation.

Bytes Written The number of NNTP bytes

written to the cache since

installation.

Statistics Description

Operations Article Hits The number of news article hits

since installation.

Article Misses The number of news article

misses since installation.

Overview Hits The number of overview hits

since installation.

Overview Refreshes The number of overview

refreshes. An overview refresh

occurs when the appliance

caches a group overview on

demand (as opposed to an

overview pull).

Group Hits The total number of news group

hits.

Group Refreshes The total number of news group

refreshes (updates).

Posts The number of posts through the

traffic server.

Contents

Main Page Contents Page Page Page Page Page Page Page Preface Who should read this manual This manual uses the following conventions. Conventions used in this manual Chapter 1 Introduction Flexible cache architecture Why use this caching appliance? NetStructure What is an Intel Cache Appliance? Intel NetStructure Cache Appliance features Page How to use this guide Page Page Starting the system for the first time Page Page Page Accessing the Manager UI Page Page Using online help Accessing the command-line interface Verifying that caching works Changing passwords Page Chapter 3 Monitoring Appliance Performance Accessing monitor pages Using the Dashboard page Dashboard alert lights Resolving alarms Exposing node detail Changing the selected node Using the Node page Using the Graphs page Using the Protocols page Using the Cache page Using the ARM page Using the Other page Using the MRTG page Chapter 4 Configuring the Appliance Accessing configure pages Using the Server Basics page Setting general options Setting Web management options Setting virtual IP addressing options What are virtual IP addresses? Using virtual IP addressing for node failover Adding entries to the Virtual IP address list Setting browser auto configuration options Setting throttling of network connections Configuring load-shedding Enabling SNMP agents Using the Protocols page Configuring HTTP Configuring NNTP The following table describes the options. Page Configuring FTP The FTP section lets you congure FTP protocols. The following table describes the options. Using the Cache page Cache activation Storage The following table describes the storage options. The following table describes the freshness options. Freshness Variable content Using the Security page Using the Routing page Setting HTTP parent caching options Setting ICP options Establishing ICP peers Page Setting server accelerator options Checking transparency Checking WCCP Using the Host Database page Configuring the host database Page Configuring DNS Using the Snapshots page Page Chapter 5 Using the Command-Line Interface Starting the command-line interface Starting the appliance the first time Using the appliance after initial start-up Navigating the command-line interface Using the setup menu Changing network addresses configuration Changing the controller speed and transmission mode Changing the DNS address and domain name Changing the gateway address Configuring time zone settings Configuring date and time settings Viewing current network address settings Using the main menu Checking the status of the Server and Manager Starting the appliance Stopping the appliance Viewing and maintaining versions of the software Identifying which versions of the software are currently installed Installing a new version of the appliance software Application upgrade Patch upgrade OS/Application upgrade Running a different version of the appliance software Deleting a version of the appliance software Viewing which version of the appliance software is currently running Clearing statistics Rebooting the System Halting the System Changing the administrator password for telnet or serial access Resetting to factory settings Preparing a cache disk Using the config menu Setting general controls Configuring protocol options Configuring HTTP options Configuring NNTP options Page Page Page Page Page Page Configuring Secure Socket Layer (SSL) port Configuring FTP options Setting filter rules Page Setting remap rules Page Configuring the cache Enabling caching for different protocols Setting disk storage options Setting object freshness options The following table shows the options: Configuring caching rules Page Page Configuring security options Controlling client access to the appliance Controlling access to the Manager UI Configuring routing options Configuring and maintaining ICP peers Page Page Page Page Controlling parent proxy caching Page Page Configuring WCCP options Configuring the Adaptive Redirection Module (ARM) Enabling and disabling transparent redirection Configuring ARM bypass rules Page Configuring load-shedding options Configuring the host database options The following table describes the options: Configuring logging options Using the monitor menu Viewing Node statistics Viewing Protocol statistics Page Page The following table describes the statistics for the FTP protocol: Viewing Cache statistics screen. The following table describes the statistics. Viewing Other statistics the screen. The following table describes the statistics. Page Using the expert menu Using the save menu Using the load menu Using the logoff menu Chapter 6 Troubleshooting Problems Rebooting your system Rebooting your system from the CLI Page Page Appendix A Caching Solutions and Performance Web proxy caching A day in the life of a cache request Ensuring cached object freshness Revalidating objects HTTP object freshness tests Deciding whether to serve HTTP objects Configuring HTTP freshness options Configuring HTTP revalidation Configuring HTTP cachability Caching HTTP alternates To cache or not to cache? Transparent proxy caching Serving requests transparently Interception strategies 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 Adaptive interception bypass Appliance adaptive bypass More about bypass rules Static and dynamic (adaptive) bypass Configuring bypass options Server acceleration Advantages of server acceleration How server acceleration works Retrieving requested documents Page Web server redirects Understanding server acceleration mapping rules Examples of rules and translations Page Understanding cache hierarchies HTTP cache hierarchies ICP cache hierarchies NNTP cache hierarchies News article caching The appliance as a news server The appliance as a caching proxy news server Supporting several parent news servers Blocking particular groups Clustering Transparency Posting Maintaining the cache: updates and feeds Configuring Access control Obeying NNTP control messages Client bandwidth throttling Carrier-class architecture Performance Page High-availability Alarms Virtual IP failover Load shedding Node fault tolerance Expansion capabilities Centralized administration Page Page Page HTML messages sent to clients Page Standard HTTP response messages Page Page Glossary Page Page Page Page Page Index