Configuring 2-event Classification

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Information about 2-event Classification

When a class 4 device gets detected, IOS allocates 30W without any CDP or LLDP negotiation. This means that even before the link comes up the class 4 power device gets 30W.

Also, on the hardware level the PSE does a 2-event classification which allows a class 4 PD to detect PSE capability of providing 30W from hardware, register itself and it can move up to PoE+ level without waiting for any CDP/LLDP packet exchange.

Once 2-event is enabled on a port, you need to manually shut/un-shut the port or connect the PD again to start the IEEE detection again. Power budget allocation for a class-4 device will be 30W if 2-event classification is enabled on the port, else it will be 15.4W.

Configuring 2-event Classification

To configure the switch for a 2-event Classification, perform the steps given below:

SUMMARY STEPS

    1.    enable

    2.    configure terminal

    3.    interface interface-id

    4.    power inline port 2-event

    5.    end


DETAILED STEPS
     Command or ActionPurpose
    Step 1 enable


    Example: 
    Device> enable
     

    Enables privileged EXEC mode. Enter your password if prompted.

     

    Step 2configure terminal


    Example: 
    Device# configure terminal
     

    Enters global configuration mode.

     
    Step 3interface interface-id


    Example: 
    Device(config)# interface gigabitethernet2/0/1
     

    Specifies the physical port to be configured, and enters interface configuration mode.

     
    Step 4 power inline port 2-event


    Example: 
    Device(config-if)# power inline port 2-event
     

    Configures 2-event classification on the switch.

     
    Step 5end


    Example: 
    Device(config-if)# end
     

    Returns to privileged EXEC mode.

     
    Related References
    Example: Configuring 2-Event Classification

    Example: Configuring 2-Event Classification

    This example shows how you can configure 2-event classification. 

    Device> enable
Device# configure terminal
Device(config)#  interface gigabitethernet2/0/1 
Device(config-if)# power inline port 2-event
Device(config-if)# end
    Related Tasks
    Configuring 2-event Classification