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How to configure the Link State Tracking feature on EtherWAN managed switches

Link State Tracking

Link State Tracking binds the link state of multiple interfaces. Interfaces are separated into upstream and downstream interfaces, and can be further separated into different groups. When Link State Tracking is enabled, the link state of all the downstream and upstream interfaces that are in the same group are bound together. When all the upstream interfaces in a group have lost the link, Link State Tracking will transition the link states of all the downstream interfaces to be in the down state as well.

Link-state tracking can provide redundancy in the network when used with server network interface card (NIC) adapter teaming or bonding. When the server network adapters are configured in a primary or secondary relationship known as teaming and the link is lost on the primary interface, connectivity transparently changes to the secondary interface.

To navigate to the Link State Tracking menu:

1.Click on the + next to Switching.

2.Click on Link State Tracking.

Enable/Disable Link State Tracking

To enable Link State Tracking for a particular group on the EtherWAN Managed Switch (see figure below):

1.Under Group Setting, click the check box of the Link State groups that are to be enabled (or disabled).

2.Click on Update Setting.

Port Settings

To configure individual ports for a Link State group on the EtherWAN Managed Switch (see figure below):

1.Under Port Setting, select the Link State Group that the port will belong to from the Group drop down box

2.Select if the port is upstream or downstream from the Up/Down Stream)drop down box.

3.Click on Update Setting.

Link State Tracking Configuration Using CLI Commands

Assigning a Port to a Link State Tracking Group

To assign a port to a Link State Tracking group on the EtherWAN Managed Switch, use the following CLI commands:

CLI Command Mode: Interface Configuration Mode

CLI Command Syntax: link state group <group #> <upstream | downstream>

Usage Example:

switch_a# configure terminal
switch_a(config)# interface fe1
switch_a(config-if)# link state group 4 downstream
switch_a(config-if)# q
switch_a(config)# q