Re: Bridges

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On Wednesday 2010-08-18 00:44, Jonathan Tripathy wrote:
>
> When using a single Linux host with lots of bridges, would there ever be a
> time, even for a few seconds, where traffic would "jump" bridges?
>
> I know a previous poster mentioned that when adding a host to a bridge, for a
> few seconds all packets get sent everywhere

That seems unlikely. The bridge keeps a table of (mac, bridgeport) 
tuples (cf. `brctl showmacs br0`), and a "broadcast" should only occur 
when there is no matching entry or when the destination L2 address is 
broadcast. (Ignoring multicast for now.)

> Reason I ask is that I am considering have one bridge for public traffic and
> one bridge for private, and don't want private traffic to be seen by hosts
> connected to the public bridge.

Bridges link Ethernet (sub)segments together to form a (large) Ethernet 
segment. In other words, if you keep the trees separate, they will be 
separate.
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