Netgear M4300-52G-PoE+ (GSM4352PB) - 48x1G PoE+ Stackable Managed Switch with 2x10GBASE-T and 2xSFP+ (1,000W PSU) Software Guide

Link dependency allows the link status of specified ports to be dependent on the link status of 
one port or many ports. Consequently, if a port on which other ports depend loses a link, the 
dependent ports either become administratively disabled and are brought down or become 
administratively enabled and are brought up.

Use this command to indicate if the downstream interfaces of a specified group must mirror 
or invert the status of the upstream interfaces. The default configuration for a group is down. 
That is, the downstream interfaces mirror the upstream link status by going down when all 
upstream interfaces are down. Specifying the up keyword allows the downstream interfaces 
to come up when all upstream interfaces are down.

Use this command to add a group of interfaces to the downstream interface list. Adding an 
interface to a downstream list brings the interface down until an upstream interface is added 
to the group. The link status then follows the interface that is specified in the link state 
group upstream

 command. To prevent interfaces from being brought down, enter the 

 command before you enter the link state group 

 command.

Use this command to remove a group of interfaces from the downstream list.

Default

down

Format

link state group group-id action {up | down}

Mode

Global Config

Format

link state group group-id downstream

Mode

Interface Config

Format

no link state group group-id downstream

Mode

Interface Config