[rbridge] Proposed details for announcing endnodes

[Joe Touch]

James Carlson wrote:
> Joe Touch writes:
>> Steve Dalberg wrote:
>>> As for the Layer 2 "pings" question, you'd be better off just looking
>>> for traffic sourced by the MAC in question over a couple of second
>>> period.  Not sure what you would want to do with that, but if you don't
>>> see anything you can safely clear your forwarding table 
>> That works only for bidirectional traffic. Silent listeners that move 
>> always cause problems - and, as I onted, we shouldn't propose to fix 
>> that issue.
> 
> If it's a truly silent listener, then it won't really cause us any
> problems.  Absent special tricks (such as 802.11 in AP mode), we won't
> learn of its location by any means, and we thus will be forced to
> flood all packets sent to that receiver.  No location-related problem
> should occur.

A silent listener that moves will never trigger broadcast, UNLESS we 
time-out entries. That might be desirable - and since truly silent 
liseners are an exception, that shouldn't cause a problem. I.e., a 
passive solution might be appropriate.

> If it's a listener that speaks once in a blue moon, then Steve's note
> holds: we'll time out the entry, stop using it, and revert back to
> flooding for an unknown destination.

Right - the speaking tells us when they move.

Joe


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