D-Link DWL-3600AP

PacketCaptureConfigurationandSettings
D-Link UnifiedAccessPointAdministrator’sGuide
November2011 Page127
UnifiedAccessPointAdministrator’sGuide
InordertominimizeperformanceimpactontheAPwhiletrafficcaptureisinprogress,youshouldinstall
capturefilters tolimitwhichtrafficissenttotheWiresharktool.Whencapturing802.11traffic,largeportion
ofthecapturedframestendtobebeacons(typicallysentevery100msbyallAccess
Points).Although
Wiresharksupportsadisplayfilterforbeaconframes,itdoesnotsupportacapturefiltertopreventtheAP
fromforwardingcapturedbeaconpacketstotheWiresharktool.Inordertoreduceperformanceimpactof
capturingthe802.11beacons,youcandisablethecapturebeaconsmode.
Theremote
pack etcapturefacilityisastandardfeatureoftheWiresharktoolforWindows.
Wiresharkisanopensourcetoolandisavailableforfree;itcanbedownloadedfromhttp://
www.wireshark.org.
Table50describesthefieldstoconfigurethepacketcapturestatus.
PacketCaptureFileDownload
PacketCaptureFileDownloadallowsyoutodownloadthecapturefilebyTFTPtoaconfiguredTFTPserveror
byHTTP(S)toaPC.Thecapturedpacketsarestoredinfile/tmp/apcapture.pcapontheAP.Acaptureis
automaticallystoppedwhenthecapturefiledownloadcommandis triggered.
Becausethecapture
fileislocatedintheRAMfilesystem,itdisapp earsiftheAPisreset.
Table51describesthefieldstoconfigurethepacketcapturestatus.
Note:RemotepacketcaptureisnotstandardontheLinuxversionofWireshark;theLinuxversion
doesn'tworkwiththeAP.
Table50:RemotePacketCapture
Field Description
RemoteCapturePort Specifytheremoteporttouseasthedestinationforpack etcaptures.(range1
to65530).
Table51:PacketCaptureFileDownload
Field Description
UseTFTPtodownloadthe
capturefile
SelectorclearthisoptiontodeterminewhethertouseTFTPorHTTP(S)to
downloadthecapturefile:
•TodownloadthefilebyusingTFTP,select thisoptionandcompletethe
additionalfields.
•TodownloadthefilebyusingHTTPorHTTPS,clearthisoption
andclick
Downloadtobrowsetothelocationwherethefileistobesaved.
TFTPServerFilename WhenusingTFTPtodownloadthefi le, specifyanameforthepacketcapture
file,includingthe.pcapfilenameextensionandthepathtothedirectory
whereyouwanttosavethefile.
ServerIP WhenusingTFTPtodownloadthefile,specifytheIPaddressoftheTFTP
server.