92 CHAPTER 10: SYSTEM DIAGNOSTICS
4 In the IP Address field, enter the IP address of the device that you want to
PING. Click Ping.
5 The 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
Addresses
The Trace Route feature allows you to display the network hops from the
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
Route
To perform a trace route to a device using the Web interface:
1 Log in to the Web interface.
2 Click Device View on the Toolbar.
3 Select Protocol -> Ping/TraceRoute in the Navigation Tree. The
Ping/Traceroute screen is displayed.
4 In the IP Address field, enter the IP address of the device that you want to
trace. Click TraceRoute.
5 The 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:
