Avaya 3100 Mobile Communicator Manual de usuario descargar pdf (Pagina 26)

26 Troubleshooting communication and network problems

Procedure steps

Step Action

Click the Tools tab.

2 Scroll to the Packet Capture section.

In the redundant configuration, select a gateway.

Click Capture.

5 Wait for the packet capture to be performed, then click Stop.

6 Click Save.

Navigate to the folder where you want to save the dump.cap log

file.

8 Click Save.

The dump.cap log file is saved.

--End--

Disabling Wireshark packet checksum veriﬁcation

You need to disable Wireshark packet checksum verification before you

can work with the captured packets.

Attention: When you view the packet captures from the Avaya 3100

Mobile Communicator Gateway packet capture utility, the trace contains

incorrect checksums. The incorrect checksums occur because the network

interface on the Avaya 3100 Mobile Communicator Gateway performs

checksum off-loading, meaning that the network interface adds the

checksum to the packets instead of the operating system TCP/IP stack.

During the capture process, the host operating system sends the packets

(being captured) directly to the capture interface without the addition of a

checksum.

Wireshark performs checksum verification. Packet checksum errors can

prevent TCP reassembly so you need to disable Wireshark checksum

verification.

The following procedure provides the steps for Wireshark Version 0.99.6a

(SVN Rev 22276). For more information, see the Wireshark documentation

for your version of Wireshark or visit www.wireshark.org

Avaya 3100 Mobile Communicator

Troubleshooting

NN42030-700 02.03 15 July 2010

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Avaya 3100 Mobile Communicator Manual de usuario Pagina 26