Re: [Ethereal-users] Sniff all packets in a subnet

[Tarun Siripurapu <starunj@xxxxxxxxx>]

Hi,

How are you confident that I am behind a switch and not a router? Is
there any way to find out?

Thanks,
Tarun

On 10/7/05, Breen Mullins <bmullins@xxxxxxxxxx> wrote:
> On Fri, 2005-10-07 at 01:50 -0700, Guy Harris wrote:
> > Breen Mullins wrote:
> >
> > > You're almost certainly connected to a switch (which is marketing-speak
> > > for a bridge),
> >
> > Really?
>
> Yes, really. What we call a switch (I do too...) is an instance of
> what the IEEE standard calls a 'transparent bridge'. It's the learning
> algorithm that allows the switch/bridge to make intelligent forwarding
> decisions which makes it a bridge.
>
> > I think of a bridge as a device that forwards all received
> > packets to those networks on the bridge, other than the one on which the
> > packet came in on,
>
> No, that's more like a repeater -- IEEE-speak for a hub.
>
> >
> > But, yes, Ethernet networks tend to be switched, these days, so A, B,
> > and C are probably plugged into a switch (perhaps with a router behind
> > the switch).
> >
>
> The original post refers to trying to sniff traffic in a dorm at Purdue
> University. As I said, it's absolutely certain that it's a switched
> network.
>
> Breen
> --
> Breen Mullins                      408-435-8401x123
> SQA Engineer                       0xde05499b
> Asante Technologies, Inc.
>
>
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