LACP

LACP (Link Aggregation Control Protocol) is used to dynamically determine if link aggregation is possible and then to automatically configure the aggregation. LACP is a part of the IEEE 802.1ad standard and allows the switch to dynamically reconfigure the LAGs (link aggregation groups). A LAG is enabled only if the LACP determines that the remote device is also using LACP and is able to join the LAG.

To view the LACP statistics:

  1. Select the Statistics menu from the Web UI.
  2. Expand the RF Domain node.
  3. Select a Wireless Controller.
  4. Expand the Network menu from the left-hand side of the UI.
  5. Select LACP.

    The Statistics > Controller > System and Aggregator Statistics tab displays by default in the right-hand pane.

    Click to expand in new window
    The System field describes the following:
    System Indentifier Displays the MAC address of the device.
    System Priority Displays the system‘s LACP priority value.
    The Aggregator Statistics field describes the following:
    Aggregator Name Displays the name of the port channel configured on this device.
    Interface Displays the name of the interface for which these statistics are being displayed.
    LACPUD Sent Displays the number of LACPDUs (Link Aggregation Control Protocol Data Units) sent from this device.
    LACPDU Received Displays the number of LACPDUs received by this device.
    Marker Sent Displays the number of marker packets sent. Marker packets are sent to the remote device to ensure that all frames transmitted through the link have been received.
    Marker Received Displays the number of marker packet responses received from the remote device.
    Packets Error Sent Displays the total number packets transmitted with error
    Packets Error Received Displays the total number packets received with error.
  6. Select the Aggregator Details tab. This field describes the following:
    Click to expand in new window
    Aggregator Name Displays the name of the LAG.
    Interface Displays the name of the interface that is a member of the LAG.
    MAC Address Displays the MAC address of the physical interface.
    Mux Machine State Displays the state of the multiplexer state machine for the aggregation port. The values are:
    • attached – Displays the state as attached, when the multiplexer state machine is initiating the process of attaching the port to the selected aggregator.
    • detached – Displays the state as detached, when the multiplexer state machine is initiating the process of detaching the port from the aggregator.
    • collecting/distributing – Displays the state as collecting/distributing. Collecting and distributing states are merged together to form a combined state (coupled control). Because independent control is not possible, the coupled control state machine does not wait for the partner to signal that collection has started before enabling both collection and distribution.
  7. Select Refresh to update the screen's statistics counters to their latest values.
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