[ale] OT Linksys primiscuous mode

[Greg Clifton]

OK, so a hub keeps it simple. But if a hub cannot be found, he can use a
switch, provided that the switch can do port mirroring, in order to get a
copy of the traffic?

On Tue, Dec 22, 2009 at 11:14 AM, Ed Cashin <ecashin at noserose.net> wrote:

> On Tue, Dec 22, 2009 at 11:05 AM, Greg Clifton <gccfof5 at gmail.com> wrote:
> > At low cost of hardware these days (5 port 10/100 switch for on the order
> of
> > $15) and a switches generally being preferred over hubs for performance
> > reasons, I expect you are right that a hub will be hard to find. Can you
> > tell me why a hub would be preferred over a switch in this situation?
>
> Hubs don't direct traffic, they blindly disperse it, so that when a
> packet goes in one port it goes out all the others.  You probably
> know that already, but it relates to the situation at hand because
> of how it's used.
>
> The OP can plug the uplink into the hub and sniff all the traffic
> by plugging into another port on the hub, which is effectively the
> result you'd get without the extra hub if you could do port mirroring
> on the uplink port.
>
> --
>   Ed Cashin <ecashin at noserose.net>
>  http://noserose.net/e/
>  http://www.coraid.com/
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