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

[Erik Nordmark <erik.nordmark@sun.com>]

Brett Pentland wrote:

>> 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.

I feel we need to be more explicit about the 100% packet loss case to 
avoid misunderstandings.

    Erik