Packet Traces; Figure 1-3 Trace File Example - NEC UNIVERGE SV9100 System Maintenance Manual

UNIVERGE SV9100
P
S 3
ACKET
ECTION
It is possible to use a packet trace utility (also known as "Sniffers") to determine what
data is being transmitted and received on an ethernet network. These can be
particularly useful to determine the cause of connection issues or voice quality issues.
The packet trace utility has to run on a PC that is connected to a managed switch port
that is capable of port mirroring. The technician will need to enable port mirroring on
the Switch port the IPLE is connected to, and mirror to the port the PC that is running
wireshark is connected to. A HUB may not be used in front of the SV9100, however a
HUB may be used for wireshark captures in front of IP Telephones. The reason for
this is the IPLE Network connection does NOT support half-duplex devices.
There are many utilities available that will allow packet trace to be run on a network.
One such utility is Ethereal. This is a software application distributed under a GNU
general public license (
saved in a standard format for analysis later.
A sample trace file is shown in
System Maintenance Manual
Examples:
The UNIVERGE SV9100 IP Phone can successfully ping all devices up to

and including the local router. Anything beyond that point fails. This would
suggest that the Leased Line or remote router has a problem.
The local PC (192.l68.1.101) can ping all devices except the UNIVERGE

SV9100 IP Phone. The UNIVERGE SV9100 IP Phone can not ping
anywhere. This would suggest that there is a problem with the UNIVERGE
SV9100 IP Phone or its connection to the switch/hub.
T
RACES
www.wireshark.org
). This allows the files to be captured and
Figure 1-3 Trace File Example on page
Issue 1.0
1-6.
1 - 5