Re: [tlug] Class B Hubs not suitable for data center use?

[bruno raoult <br@example.com>]

So, it means that all packets going to another network are always
visible, no?

On Sat, 2002-08-31 at 19:30, Jean-Christian Imbeault wrote:
> >From: bruno raoult <br@example.com>
> >
> >Just a question, because I don't know switching very well: Do you mean
> >that switches know the routing tables?
> 
> No. By switching we mean decide which of the physical hub/swicth ethernet 
> ports to put the packet on. The switch can figure this out because it has 
> cached the MAC address of each machine connected to each port.
> 
> So when a message comes in for a machine with a certain MAC address it knows 
> which port to put the packet on.
> 
> This is Layer 2 switching. You could say it is like routing (Layer 3) but 
> using MAC address (Layer 2). (ok maybe not such a good analogy).
> 
> HTH,
> 
> Jc
> 
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