User's Manual
Chapter 7 Data testing
Tracing the packet route
SmartClass TPS User’s Guide
May 2014 22035456, Rev 001 65
Tracing the packet route
Using the trace route feature, you can trace the IP packet path through the network. The following
procedure describes how to trace the packet route.
To trace the packet route
1 From the IP Data menu, select Traceroute Test, and then specify the settings. The following
table describes the settings.
2 Select Start Traceroute Test to start the test and display the test results menu.
Use the * key to clear the results or the # key to restart the test.
3 To save the results, press the Utility key and then the 5 key.For more information on the
results, see Chapter “IP Data results”.
The packet route is traced.
Capturing network traffic
The SmartClass Triple Play Services allows you to capture network packets to a file on the Smart-
Class or to a file on a USB drive.
The capture feature allows you to filter captured information by IP address, port number, or by a
user-defined filter string. The information can be saved to a file, using PCAP format, which can be
sent to a network technician for analysis on a protocol analyzer.
If you insert a USB drive into the SmartClass Triple Play Services, it will recognize the drive and it
will become the default location where the packets will be saved. Otherwise, the packets will be
saved to a file in the internal File Manager. The maximum file size for packets stored in the internal
File Manager is 1 Mbytes; for USB capture, file size depends on the space available on the USB
drive.
To capture network traffic
1 Select an interface (Ethernet TE, Wi-Fi, DSL-Bridge, or DSL-Modem/Router), and then select
Network.
2 From the Interfaces menu, select Packet Capture.
Setting Description
Destination
Type
Select either IP address or DNS Name (domain name server name) as the desti-
nation type.
IP Address If the Destination Type is IP Address, enter the destination IP Address.
DNS Name If the Destination Type is DNS Name, enter the destination DNS Name.
Packet Type Select either ICMP (Internet Control Message Protocol) or UDP (User Datagram
Packet) as the packet type.
DNS Lookup
Hops
Specify whether you want to lookup names for hops.
NOTE:
Packet Capture is only available in IPv4 modes (not available in IPv6).