Tracing IP Addresses 229You can interrupt a PING request at any time by clicking Stop.Some network environments block PING traffic on the network. The PINGrequest may therefore fail even if the network device is operatingnormally.Tracing IPAddressesThe Trace Route feature allows you to display the network hops from theWebcache to a device on an IP network. This feature is useful to diagnoseconnectivity problems such as a failed network device between theWebcache and the web server being accessed.Performing a TraceRouteTo perform a trace route to a device using the Web interface:1 Log in to the Web interface.2 Click Device on the Toolbar.3 Select Protocol > Ping/TraceRoute in the Navigation Tree. ThePing/Traceroute screen is displayed.4 In the IP Address/DNS Name field, enter the IP address or Domain NameServer name of the device that you want to trace. Click TraceRoute.5 The Webcache sends a trace route request to the specified device and amessage similar to the following is displayed:traceroute to 192.168.1.254, 30 hops max, 38 byte packetsIf the device is accessible and functioning correctly, a message similar tothe following is displayed which displays the network hops. Each hopmay take a few seconds to complete:1.router1 (192.168.1.255) 1.292ms, 1.343ms, 1.810ms2.router2 (192.168.1.256) 26.027ms, 27.156ms, 44.902ms3.router3 (192.168.1.257) 24.323ms, 24.854ms, 30.096ms4.router4 (192.168.1.258) 27.303ms, 33.639msIf the device is not accessible, or is not functioning correctly, only the hopsthat worked are displayed.Trace Route SymbolsA symbol may be displayed after a network hop which provides furtherinformation about that hop. For further information, see the “TraceRoute Symbols” appendix on page 333.dua1611-5aaa04.book Page 229 Friday, November 29, 2002 8:56 PM
