[Ntop-dev] n2n bugs and features

Christian Lyra lyra at pop-pr.rnp.br
Tue Apr 8 05:55:28 CEST 2008


Hi,

>  Your understanding is not quite correct. There is no broadcast when a node
>  registers with the supernode. But edge nodes send gratuitous ARP which is the
>  broadcast you see. This could be easily disabled but it doesn't solve the
>  problem. Whenever an ethernet broadcast packet (eg. ARP who-has) is sent this
>  is broadcast to all edge nodes. The sending edge will be seen by all other
>  nodes and they will try to register with it at this time.

ok... broadcast was bad choice of word. I meant, when a edge node
register to supernode what happens next? My guess was that supernode
"tells" everyone about the new edge, is this correct?

Now about the broadcast... when a node send a ARP who-has, who replies
to sender? the edge node who has the awnser or the supernode awnser,
since he knows who has?


>  The registration process could possibly be more selective but at the cost of
>  reliability. We would need to be very careful with the design.


of course.. this is why i´m trying to understand the design :-)

-- 
Christian Lyra
PoP-PR/RNP


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