Re: soft state (was Re: shim6 and bit errors in data packet headers

[Iljitsch van Beijnum <iljitsch@muada.com>]

On 27-mei-2005, at 17:10, marcelo bagnulo braun wrote:

> > > well, this wouldn't really tell you that the path is working for  
> > > sure, right?

> > Node A could be sending and receiving while there is a failure,  
> > but in that case, B wouldn't be receiving data. So if both sides  
> > do this, it works well.

> ok, but the one that needs to react is node A in this case, right?  
> so how does node A finds out the problem?

I would think that if one side triggers reachability testing, the  
other side would also do it. The probes in one direction can also  
function as replies in the other direction, cutting down on the  
number of packets exchanged.