Cisco Cisco WAP351 Wireless-N Dual Radio Access Point with 5-Port Switch Manual De Mantenimiento

Packet Capture

Cisco WAP131 and WAP351 Administration Guide

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The wireless packet capture feature enables capturing and storing the packets 
received and transmitted by the WAP device. The captured packets can then be 
analyzed by a network protocol analyzer for troubleshooting or performance 
optimization. 

There are two methods of packet capture:

•

Local capture method— Captured packets are stored in a file on the WAP 
device. The WAP device can transfer the file to a TFTP server. The file is 
formatted in pcap format and can be examined using tools such as 
Wireshark and OmniPeek.

•

Remote capture method—Captured packets are redirected in real time to 
an external computer running the Wireshark tool.

The WAP device can capture these types of packets:

•

802.11 packets received and transmitted on the radio interfaces. Packets 
captured on the radio interfaces include the 802.11 header.

•

802.3 packets received and transmitted on the Ethernet interface.

•

802.3 packets received and transmitted on the internal logical interfaces, 
such as VAPs and WDS interfaces.

Use the Packet Capture page to configure the packet capture parameters, start a 
local or remote packet capture, view the current packet capture status, and 
download a packet capture file. 

To configure packet capture settings:

Select Administration > Packet Capture. 

In the Packet Capture Configuration area, configure these parameters:

•

Capture Beacons—Enables or disables the capturing of 802.11 beacons 
detected or transmitted by the radio.

•

Promiscuous Capture—Enables or disables the promiscuous mode when 
the capture is active.