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Link Aggregation

Configuration > Networking > Link Aggregation

The Link Aggregation tab displays channel group and link aggregation details for appliances selected in the appliance tree.

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Link aggregation combines data from multiple physical or virtual interfaces into a channel group, which provides a single high-speed link. Configuring link aggregation adds failover redundancy to the interfaces in the channel group.

IMPORTANT: If you aggregate interfaces that are currently in use, those interfaces are removed from deployment before aggregation occurs. When attempting to apply channel group additions or changes on the Link Aggregation dialog box, a confirmation dialog box opens that gives you the choice to proceed with aggregating the interfaces or to cancel your link aggregation changes.

The table on the Link Aggregation tab displays the following information:

Column Description
Appliance Name of the EdgeConnect appliance.
Channel Groups If any channel groups are configured for the appliance, the names of the channel groups are listed in this column.

NOTE: You can create up to four channel groups (bonded interfaces) for each appliance; two for the LAN side (blan0, blan1) and two for the WAN side (bwan0, bwan1).
Channel Groups Status Status of the channel group (up or down). For dynamic mode (LACP mode), this status combines the LACP and link statuses. For static mode, it combines the link statuses of the underlying ports.
Interfaces Physical or virtual interfaces included in the channel group. A channel group consists of one, two, three, or four interfaces.

NOTE: An interface can be part of only one channel group.
MTU Maximum transmission unit (MTU) size (in bytes) configured for the channel group. The configured MTU overrides any existing MTU settings when the channel group is deployed. The default size is 1500 bytes.
LACP Mode Indicates whether Link Aggregation Control Protocol (LACP) is enabled for the channel group (yes or no).
LACP Rate Affects the timeout and the rate at which the LACP partner (switch) is requested to send LACPDU packets.

For slow, one packet per 30 seconds, and timeout after 90 seconds. This is the default rate.

For fast, one packet per second, and timeout after three seconds.
LACP System Priority Priority number used to break ties with the LACP partner. This value can be set from 1 to 65535 with the lowest number having the highest priority. The default value is 65535.
Comment Additional information about the channel group.
State Details Provides status information on the channel group, including details about the channel group (bonded interface) state and port (interface) states. Click the info icon to open a dialog box that displays this status information.

The Channel group state tab on the dialog box includes three status indicators: Link status, LACP status, and Channel group status. (LACP status is displayed only in dynamic mode [LACP mode].) The Channel group status reflects the Link status and LACP status. If either is down, the Channel group status will be down. The LACP status reflects the LACP statuses on the Port states tab. If the LACP statuses of all interfaces are down, the LACP status on the Channel group state tab will be down.

To refresh the status information on this dialog box, click Refresh.

The State Details icon is also displayed in the table on the Link Aggregation dialog box. The same dialog box opens if you click it there.

To add, change, or delete channel groups for an appliance, click the edit icon in the applicable table row on the Link Aggregation tab.

The Link Aggregation dialog box opens.

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The Channel Groups Status column displays the current status of the channel group (up, down, or pending). Pending status indicates that the link aggregation configuration has not yet been applied, and the state of the link aggregation is not known at this time.

Add or Modify a Channel Group

To add a channel group, perform the following steps:

NOTE: To modify a channel group, click the edit icon next to the channel group. The Modify link aggregation dialog box opens. Change the fields as described below, and then click Apply. You cannot modify an existing channel group name, but you can change the other settings.

  1. Click Add on the Link Aggregation dialog box.

    The Add link aggregation dialog box opens.

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  2. Complete the following fields:

    Column Description
    Channel Group (interface) name Select a name for the channel group from the drop-down list (blan0, blan1, bwan0, or bwan1).
    Interfaces to be grouped From the drop-down lists, select one, two, three, or four interfaces to include in the channel group.

    IMPORTANT: If you aggregate interfaces that are currently in use, those interfaces are removed from deployment before aggregation occurs. When you click the Apply button on the Link Aggregation dialog box, a confirmation dialog box opens that gives you the choice to proceed with aggregating the interfaces or to cancel your link aggregation changes.
    MTU Specify the MTU size (in bytes) to be applied to all interfaces in the group. The default size is 1500 bytes.
    LACP mode Select this check box to enable LACP for the channel group. By default, this check box is not selected.
    LACP rate Select slow or fast from the drop-down list. The default is slow. This field is available only if LACP mode is selected.
    LACP priority Specify a priority number from 1 to 65535. Priority number is used to break ties with the LACP partner. The lower the number, the higher the priority. The default is 65535. This field is available only if LACP mode is selected.
    Comment (Optional) Provide additional information about the channel group.
  3. Click Add.

Delete a Channel Group

To delete a channel group listed in the table on the Link Aggregation dialog box, click the corresponding delete icon (X) in the last column.

Apply Your Changes

To apply your link aggregation configurations:

  1. On the Link Aggregation dialog box, click Apply.

    A confirmation dialog box opens.

    IMPORTANT: If you aggregate interfaces that are currently in use, those interfaces are removed from deployment before aggregation occurs. This confirmation dialog box gives you the choice to proceed with aggregating the interfaces or to cancel your link aggregation changes.

  2. Click Aggregate Interfaces to proceed. Otherwise, click Cancel.


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