Link Dependency Group Status

Use the Link Dependency Group Status page to configure link dependency groups. Link dependency allows the link status of one interface to be dependent on the link status of another interface. Link state groups define the interface link dependency.

To access this page, click System > Advanced Configuration > Link Dependency > Group in the navigation menu.

Use the buttons to perform the following tasks:

To add a link dependency group, click Add. Then, specify a group number, link action, and the interfaces that share a dependency.
To change the settings for a group, select the checkbox for the group and click Edit.
To delete a link dependency group, select the checkbox for each entry to delete and click Remove.
To view additional information about a group, select the checkbox for the group and click Details.

Link Dependency Group Status Fields

Field	Description
Group	The unique link dependency group identifier.
Downstream Interfaces	The set of interfaces that depend on other interfaces. In other words, the link state of the downstream interfaces depends on the link state of the upstream interfaces.
Upstream Interfaces	The set of interfaces that determine the link state of the downstream interfaces.
Link Action	The action performed on downstream interfaces when the upstream interfaces are down, which can be one of the following: Up: Downstream interfaces are up when upstream interfaces are down. Down: Downstream interfaces go down when upstream interfaces are down. Creating a link dependency group with the up link action essentially creates a backup link for the dependent link and alleviates the need to implement STP (Spanning Tree Protocol) to handle the fail-over.
State	The group state, which can be one of the following: Up: Link action is up, and no upstream interfaces have their link up, or link action is down and there are upstream interfaces that have their link up. Down: Link is down when the above conditions are not true.
Available Interfaces	Available in the Add Group dialog, this field lists the interfaces that can be added to the group. An interface defined as an upstream interface cannot be defined as a downstream interface in the same link state group or in a different group. Similarly, an interface defined as a downstream interface cannot be defined as an upstream interface. To move an interface between the Available Interfaces and Downstream Interfaces or Upstream Interfaces fields, click the interface (or [Ctrl] + click to select multiple interfaces), and then click the appropriate arrow to move the selected interfaces to the desired field.
Link Up	Available in the Group Entry Details dialog, this field lists the upstream and downstream interfaces that currently have their link up.
Link Down	Available in the Group Entry Details dialog, this field lists the upstream and downstream interfaces that currently have their link down.

Published October 2018prev | next

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