Tracing IP, Addresses, Route | 3Com Webcache 1000 (3C16115) specification

92CHAPTER 10: SYSTEM DIAGNOSTICS

4In the IP Address field, enter the IP address of the device that you want to PING. Click Ping.

5The Webcache sends a single PING request to the specified device and a message similar to the following is displayed:

Starting ping, resolution of displayed time is 10 milli-seconds

	If the device is accessible and functioning correctly, a message similar to
	the following is displayed:
	64 bytes from 192.156.136.22: icmp_seq=0 ttl=248 time=195.2
	ms
	If the device is not accessible, or is not functioning correctly, a message
	similar to the following is displayed:
	No answer from 192.156.136.22
	You can interrupt a PING request at any time by clicking Stop.

Tracing IP	The Trace Route feature allows you to display the network hops from the
Addresses	Webcache to a device on an IP network. This feature is useful to diagnose
	connectivity problems such as a failed network device between the
	Webcache and the web server being accessed.
Performing a Trace	To perform a trace route to a device using the Web interface:
Route

1Log in to the Web interface.

2Click Device View on the Toolbar.

3Select Protocol -> Ping/TraceRoute in the Navigation Tree. The Ping/Traceroute screen is displayed.

4In the IP Address field, enter the IP address of the device that you want to trace. Click TraceRoute.

5The Webcache sends a trace route request to the specified device and a message similar to the following is displayed:

traceroute to 191.128.40.121, 30 hops max, 38 byte packets

If the device is accessible and functioning correctly, a message similar to the following is displayed which displays the network hops. Each hop may take a few seconds to complete:

Image 92

3Com Webcache 1000 (3C16115), Webcache 3000 (3C16116) manual Tracing IP, Addresses, Performing a Trace, Route

Contents

SuperStack 3Com Corporation 5400 Bayfront Plaza Santa Clara, California Contents II Webcache Features System Time Performance Monitoring III Command Line Interface Problem Solving Returning Products for Repair Page About this Guide Convention Description ConventionsIcon Description Related DocumentationComments Pddtechpubscomments@3com.com Site ProductRegistration Getting Started Page What is Webcache?Reduced Network Traffic Reduced Web Latency Controlled Web Access Webcache3Com Network Supervisor Link Status LEDs View DetailColor Indicates Cache Storage Status LEDs Power/Self test LED LED Color Indicates Activity LED LEDs Feature Webcache 1000/3000 Port Speed Duplex ModeDNS Server Default Router Caching Mode Network Time Protocol Disabled NTP Introducing the Webcache Installing the Webcache Site Package ContentsChoosing a Suitable Rack-Mounting Kit Contents Webcachemounts Fitting a Rack-Mounting Bracket to the Webcache Fitting a Rack-Mounting Rail to the Rear of the Rack Repeat and for the other side of the rack Fitting a Rack-Mounting Rail to the Front of the Rack Power-up Powering-upSequence Webcache Problem Color State Deploying Webcache in Your Network Proxy Cache Transparent Cache Transparent Cache Deployment As a Proxy Forwarder below Key Setting Up the Webcache for Management Example Setting Up Over the Test Network Setting Up Using a Cross-over Cable Accessing the Web Interface Is the default IP address of the Webcache User name and password screen Setting Up Through the Console Port To connect to the Webcache via the console port Accessing the Command Line Interface Wizard Settings Setting Meaning Default ExampleGetting Started Completing the Getting Started wizard before you introduce Connecting Webcache toLive Network Cables Configuration ConceptsIP Addresses Obtaining a Registered IP Address Installing the Webcache Host Name You cannot enter a host name containing a space character Domain Name Explicitly direct its Web requests to the Webcache Click LAN Settings Tick Use a proxy serverManual File Scripts Select Manual Proxy ConfigurationProxy Auto Http//intranet Click LAN Settings Tick Use automatic configuration script Select Automatic Proxy Configuration Without delays caused by Wpad Web ProxyAuto-Discovery Web Proxy Auto-Discovery Wpad protocol is not supported by Web Proxy Auto-DiscoveryResources Third-party Tools System Diagnostics Software Upgrade and InstallationChapter Managing the Webcache System Time Security Chapter System Events Performance MonitoringPage Management Software Interfaces Default User Admin user name is case-sensitiveLogging in as a Interface Accessing the Web Interface Understanding the The Web Interface Banner Toolbar Summary ViewDevice View Help View Device Mimic Console Port HotspotLAN Port Hotspot Unit Hotspot Device Summary SymbolBehavior Information Area Managing the Webcache System Time Network Time Protocol?Choosing a Protocol Server Configuring ProtocolSystem Time Manually System Time Passwords? Setting PasswordsWhat are Username as soon as possible Account no password Access to the management interfacesEnabled on the Webcache Security of the Webcache. When password recovery is enabled Performing Password RecoveryPassword for the admin username Security WEB Access Example Domain Name Rules Check Enable Web Site BlockingSite Blocking What is Web Client Blocking? Client Blocking Log in to the Web interface Click Device View on the Toolbar See Proxy Auto Configuration PAC File Scripts on Access log to the FTP serverAccess logs contain the following fields Bypass the Webcache entirely after reading the Browser Logging Field Description Analyzing Access LogsLog Controlling and Monitoring WEB Access System Events Notification Check Enable Email Notifcation of System Events New software upgrade is availableSoftware upgrade has succeeded Software upgrade has failed Webcache has failed its Power On Self Test It. You can configure the network management station to log Snmp TrapsCache storage device has failed Click OK System events occur. An Snmp trap is a message generated by Traps Monitoring? Caching Request Rate sec-1 Bandwidth Saving %Hit and Miss Rate % System Hit and Miss Latencies msecThroughput Kbits/sec CPU Load % Disk Activity sec Network Packets secNew TCP Connection sec DNS Lookups sec Diagnostics? What are SystemPinging Other Devices Tracing IP AddressesPerforming a Trace Route Administrator and 3Com support personnel to troubleshoot System LogThat worked are displayed System Log is primarily intended to be used by your System Special.asp Log System Diagnostics Installation Upgrades For more information about Snmp Traps, see Snmp Traps on Performing a Software Upgrade Performing an Automatically Detected Software Upgrade View Upgrade Version Release Notes Upgrade NowUpgrade Later Discard Upgrade Performing a Manual Software Upgrade What is a Software Installation?Installation Performing a Configurations Configure the settings of the replacement WebcacheSaving Restoring Example Matching configuration file to restore the settings Restoring aInterface Web interface Click Restore. The restore process begins Command Line Interface III 108 Accessing Command Line Interface Accessing Command Line Console port Command Line Interface GettingStarted command Logout commandProtocol menu Security menu To enter a simple command To enter multiple commandsTo enter commands that require values To enter abbreviated commands Commands Quick Guide to Basic setup information for the Webcache Following prompt is displayedEnter a valid IP address Following prompt is displayed Enter a valid subnet mask Following prompt is displayed Enter the new password for the admin user Enter a valid domain name Following prompt is displayedEnter a valid date Following prompt is displayed Enter a valid time Command on the Top-level menu ExitingDisplaying Changing IP-related Information Automatically log you out Enter a valid domain name Specify an IP address to be tracedEnter a valid gateway IP address Enter a valid Domain Name System DNS Server IP address Resetting IP Information to Factory Default SettingsEnter yes to reset the IP address for the Webcache Information To display the IP information, at the Top-level menu, enter Changing the Admin PasswordNo password Displaying Displaying Changing Webcache Information Functions Following example prompt is displayed What Happens During a Reboot? What Happens During an Initialization? To specify the name At the Top-level menu, enter Specifying aManagement menu Enter a community string for the admin user name To set the community string At the Top-level menu, enterFollowing read-only fields are displayed System Name Time Since Reset ContactSoftware Version Hardware Version Problem Solving 128 Accessing the Webcache via the Console Line Accessing the Webcache via Telnet Interface ProblemsYou cannot access the Webcache using Telnet Solving Web You cannot access the Web interface System Time does not update in the Web interface Line Interface Solving CommandProblems Solving Webcache The performance of the Webcache is poor PerformanceCheck ProblemsNo Web sites can be accessed using the Webcache Solving Webcache Performance Problems Problem Solving Appendices and Index 138 Safety Information Important Safety Power Cord SetThis must be approved for the country where it is used Personnel only Only France and Peru only Consignes importantes de sécurité Cordon électriqueIl doit être agréé dans le pays dutilisation Calibre 18 AWG Type SV ou 5J Conducteurs Consignes importantes de sécurité Netzstecker Wichtige Sicherheitsinformat ionenDas Gerät muß geerdet sein Bezeichnung Neutral tragen †Impédance à la terre Appendix a Safety Information PIN -OUTS Category Pin-outs Null-Modem CablePin to RS-232 25-pin PC-AT Serial Cable Pin Number Signal Function Modem Cable 9-pin to RS-232 25-pin Appendix B Cable Specifications and PIN-OUTS Physical Dimensions SafetyPower Supply Environmental Requirements Terminal Emulation Protocols Used for AdministrationStandards Supported Services Online Technical Hostname ftp.3com.com Asia, Pacific Rim Europe and South Africa Country Telephone Number Fax Number Returning Products for Repair Appendix D Technical Support Glossary Ethernet Fast EthernetFull duplex Gateway LAN port LatencyLine speed Protocol Glossary Glossary Glossary Index Index LAN Snmp Index Index 3COM END User Software License Agreement GNU General Public License Version 2, June Page No Warranty Page Regulatory Notices