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Run Traffic Capture

Traffic Capture uses Linux tcpdump commands to capture packets received or sent by the network interfaces on your system. The traffic capture generates a packet capture (.pcap) file that contains the network traffic information.

The packet capture file shows the communication flow of traffic proxied by the RealPresence Access Director system, and includes the source and destination IP addresses. For example, when a remote user signs into Polycom RealPresence Desktop, the capture file shows the remote endpoint calling into the RealPresence Access Director system and the RealPresence Access Director system proxying the registration request to RealPresence Resource Manager system.

The maximum size of each packet capture file is 10 MB. If a capture is larger than 10 MB, the system creates additional files as needed (10 MB each). The system will create a maximum of 10 .pcap files, whether for one or multiple traffic captures. When the tenth file reaches 10 MB, the system overwrites the first .pcap file.

To capture packets per individual network interface, contact Polycom Global Services for support.

To run traffic capture:

1Go to Diagnostics > Traffic Capture.

2Select the type of packet data to capture.

3Select All (including media packet) to capture SIP, H.323, access proxy, and media packets.

4Click Capture to start the packet data capture.

5Click Stop to stop the capture.

The RealPresence Access Director system generates a packet capture file with the .pcap extension and prompts you to download the file from Diagnostics > System Log Files.

To download a packet capture file:

1Go to Diagnostics > System Log Files and select the .pcap file to download.

2Under Actions, click Download Logs and select a location to save the file.

The system notifies you when the download is complete.

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