Re: DOWN state

[Vishwas Manral <vishwas.ietf at gmail.com>]

Hi Saharam,

On Fri, Aug 14, 2009 at 3:49 PM, Shahram Davari<davari at broadcom.com> wrote:
> Hi,
>
> The based draft sys that if BFD Control packet is not received during any
> Detection Interval then the local system will go to Down state.
> I have two questions:
>
> 1) When can the local system transition out of Down state? Is it after
> receiving the first BFD packet with State=DOWN or INIT? or a number of such
> BFD packets are required? in other words is there a Hysteresis?
No hysteresis is required as such.

> 2) Should the remote system apply  a sliding window for Detection Time or
> fixed slotted windows that are not overlapped are acceptable?
What does the window contain? (I understand you are trying to do
something similar to TCP). Are you using a mechanism like that for
echo packets?

Thanks,
Vishwas