[rbridge] PS issue #7

[Joe Touch]

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Spencer Dawkins wrote:
> I'm coming up with a big "huh?" on this one...
> 
> #7 differentiate between host reattachment effects
>    and bridge reattachment effects; the latter impact the STP more
> 
> Host attachment doesn't impact STP at all, does it? I thought that was the 
> whole point of aging filtering table entries (since STP doesn't actually 
> know that my laptop has moved, so bridges that were properly filtering my 
> packets out until I moved are continuing to filter them out after I moved, 
> and I'm waiting for bridges to either learn where I am now from packets that 
> I'm now transmitting or forget where I used to be (if I'm not transmitting 
> any traffic).
> 
> Please correct me if I'm misunderstanding this...

Bridge reattachment affects STP, but host reattachment affects the
caches at the edge. They affect different aspects of the stability of
forwarding overall. (I can update the issue item to reflect this - the
document does not yet differentiate these issues though).

Joe
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