Re: [DNA] Definition of "Link Up" and "Link Down" events?

[Brett Pentland <brett.pentland@eng.monash.edu.au>]

Erik Nordmark wrote:
> Bernard Aboba wrote:
> 
>> Using Alper's definition as a starting point, here a proposed definition
>> of "Link Down" and "Link Up".  What do people think?
>>
>> Link Down
>>      An event provided by the link layer that signifies that the link is
>>      no longer capable of communicating IP packets.
>>
>> Link Up
>>      An event provided by the link layer that signifies that the link
>>      has become capable of communicating IP packets.
> 
> 
> I think it would be good if the definitions would clarify that even if 
> the link layer on the host sees 100% packet loss for a short while, it 
> doesn't necessarily imply that a link down event should be generated.
> (It presumably shouldn't be generated until the link layer abandons the 
> L2 association/connection/whatever.)

How about:

Link Down
      An event provided by the link layer that signifies a state change
      associated with the interface no longer being capable of
      communicating IP packets.

Link Up
      An event provided by the link layer that signifies a state change
      associated with the interface becoming capable of communicating
      IP packets.

Brett.