[colug-432] Gigabit Hubs (Not Switches)

[Jim Wildman]

Yes, managed switches (Cisco, etal) typically provide this capability.  And really, if you have multiple gigabit
streams...you're really past the hub stage (IMO)

On Tue, 10 Nov 2015, jep200404 at columbus.rr.com wrote:

> On Tue, 10 Nov 2015 21:58:42 -0500 (EST), R P Herrold <herrold at owlriver.com> wrote:
>
>> On Tue, 10 Nov 2015, jep200404 at columbus.rr.com wrote:
>>
>>> On Tue, 10 Nov 2015 17:59:24 -0500 (EST), R P Herrold <herrold at owlriver.com> wrote:
>>>
>>>> I'd reduce the diagnostic setup to:
>>>> 	host -- cable -- hub -- cable -- host
>>>>
>>>> and 'sniff' on the hub.
>>>
>>> Are you deliberately avoiding a switch in the above?
>>
>> yes -- a [switch] (a good switch) will limit what traffic it
>> exposes to non-relevant destination ports
>
> I stock both 10 Mbit/s and 100 Mbit/s hubs for such,
> which have sufficed for all my needs.
>
> Wondering about the future,
> I looked for gigabit hubs without much success.
>
> The work around I think of for that would be
> to set up a computer with at least two gigabit ethernet ports
> as a gigabit hub with ebtables.
> That reminds me of someone's dream laptop.
> One could also run tcpdump/wireshark on such a "hub".
>
> Are there gigabit hubs? If not, are there special gigabit
> switches that would copy all packets to some special
> sniffing port?
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----------------------------------------------------------------------
Jim Wildman, CISSP, RHCE       jim at rossberry.com http://www.rossberry.net
"Society in every state is a blessing, but Government, even in its best
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Thomas Paine