Version 5.2/5.4 65 January 2009
Troubleshooting Guide 12. Traffic Debug Analysis
12 Traffic Debug Analysis
This section discusses troubleshooting for debug troubleshooting:
''Why Can't I Record the Device's Traffic'' on page 65
''Why Doe
sn't Wireshark Decode Messages'' on page 65
12.1 Why Can't I Record the Device's Traffic
In most deployments, the device is connected to a switch and therefore, it isn’t possible to
record the network messages that are sent and received by the device. To overcome this
issue, you can perform one of the following:
Connect the PC and the device to the same hub. When a hub receives a packet
(chunk) of data at the device's port, it transmits (repeats) the packet to all of its ports
and, thus, to the other PC's that are connected to its ports.
Use port mirroring - if you are using a switch (to which the device and PC are
connected).
Use Debug Recording (refer to ''CLI Debug Recording'' on page 72) for r
ecording the
traffic (the device duplicates the packets it transmits and receives, and then sends
them to a user-defined destination).
12.2 Why Doesn't Wireshark Decode Messages
Follow the troubleshooting below when the Wireshark application (refer to ''Wireshark
Network Sniffer'' on page 69)
doesn’t correctly decode the debug recording messages that
are sent by the device.
Table 12-1: Wireshark Decoding Troubleshooting
Possible Cause Solution
1.
AudioCodes plugins for
recording does not match the
Wireshark software version.
For each Wireshark version there is a suitable set of
AudioCodes plugins. Verify that you are using the correct
plugins with your Wireshark software version:
The plugins that are released with version 5.2 are
relevant to Wireshark version 99.04.
The plugins that are released with version 5.4 are
relevant to Wireshark version 99.06.
The plugins that are released with version 5.6 are
relevant to Wireshark version 99.08.
The plugins are backward compatible, thus, you can use
Wireshark version 99.08.
2.
AudioCodes plugins for
recording were not copied to
the correct directory.
Verify that you copied the required AudioCodes plug-ins to
the correct directory. In addition, ensure that you copy the
tpncp.dat file from the ‘Shared’ directory.
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