Packet Capture Parameters

To access packet capture, go to Diagnostics > Packet Capture and configure the following settings:
Table 1. Packet Capture Parameters
Field Name Description
In the Basic pane, configure the following settings:
Site Network Site
Device Origin device of packet capture
Maximum Packet Count Specify the maximum number of packets captured and logged to the PACP file. The default value is 200. Possible range is 1 - 1000000.
Packet capture stops once the threshold specified here is reached, unless manually stopped beforehand.
Note: The default maximum packet capture data limit is 1 GB. Therefore, regardless of the Maximum Packet Capture Count specified, packet capture stops once the PCAP file size reaches 1 GB.
Send Packet To Select File to send the packets to a PCAP file.
Path/File Specify the path to the PCAP file.
In the Capture Locations pane, configure the following settings:
Bridge Select this option to capture packets to and from the appliance. When capturing appliance data ports, you must configure at least one filter. From the Filters pane, select either IP address or MAC address for the appliance.

Only one capture task can apply to the Appliance Data Ports at a time. If more than one capture task is started using the Appliance Data Ports, the last requested task will be started.

Dropped Select this option to capture dropped packets to and from the appliance.
Wired Enables wired-packet capture on the selected AP and selected wired port.
Select the port type and number. Valid values for port type are:
  • ge
  • up
  • port-channel
  • pppoe
  • vlan
  • vmif
  • wwan
  • xge

Filter packets on the basis of the direction of packet flow:

  • Inbound — Capture packets received by the AP.
  • Outbound — Capture packets transmitted by the AP.
  • Any — Capture packets transmitted and received by the AP. This is the default value.

Select Includes Wired Clients to include wired-packets received and transmitted to and from wired clients associated with the selected AP. This option is disabled by default.

Wireless Enables wireless-packet capture on the selected AP.
Specify the radio interface on which to enable wireless-packet capture.
  • Radio 1 — Enable packet capture on the Radio 1 interface.
  • Radio 2 — Enable packet capture on the Radio 2 interface.
  • Radio 3 — Enable packet capture on the Radio 3 interface.
  • All Radios — Enable packet capture on all radio interfaces for the selected AP. This option is selected by default.
Filter packets on the basis of the direction of packet flow:
  • Inbound — Capture packets received by the AP.
  • Outbound — Capture packets transmitted by the AP.
  • Any — Capture packets transmitted and received by the AP. This is the default value.
In the Filter pane, filter packets by MAC address, IP address, IP Protocol, or Port. The filters are mutually exclusive and are applied in the order in which they are listed. Enter at least one MAC address or IP address.
Note: Excessive packet capture degrades network performance. If you are going to enable packet capture on all APs, specify at least one MAC address filter and one IP address filter to avoid performance degradation.
MAC address When a MAC address is specified, only packets that move to and from the specified MAC addresses are captured.
IP address When an IP address is specified, only packets that move to and from the specified IP address are captured. Both IPv4 and IPv6 address formats are supported.
IP Protocol Valid protocol filters:
  • TCP
  • UDP
  • TCP/UDP
  • ICMP
  • IGMP
  • DHCP
  • DNS
Port Specify a TCP or UDP port number. Packets with the matching port number are captured. Use Port as an additional filter.