Avaya Mobile Communication 3100 Manual de usuario descargar pdf (Pagina 24)

24 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.

Select a network interface:

•

eth0 (default)

•

eth1

•

any (Pseudo-device that captures on all interfaces)

• lo

Click Capture.

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

7 Click Save.

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

file.

9 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 MCG 3100

packet capture utility, the trace contains incorrect checksums. The

incorrect checksums occur because the network interface on the MCG

3100 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.

Nortel Mobile Communication 3100

Nortel Mobile Communication 3100 Troubleshooting

NN42030-700 01.03 Standard

9 June 2009

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Avaya Mobile Communication 3100 Manual de usuario Pagina 24