Are you sure it's a hub and not a switch? I've seen so-called "hubs" that
were actually switches.
--
Phil Paradis | Network Administrator | Churchill Downs, Inc. | 700 Central
Ave | Louisville KY | +1 502 509 7445
On 4/21/12 11:25 AM, "Marius-Simion Cristea" <cristea12@xxxxxxxxx> wrote:
>Hi,
>
>I want to capture the traffic (the commands) that are sent from a
>SCALANCE touch panel emulator to a PLC. The configuration of my network
>looks like this:
>
>Emulator---HUB---Scalance_Switch---PLC
> |
>PC (Wireshark)
>
>I'm giving commands to the PLC from the emulator, the PLC responds, but I
>can't capture any of those commands using Wireshark, i'm seeing only ARP,
>LLDP, PN-DCP packets and some other broadcast packets.
>
>Is it possible to capture those commands using Wireshark? if so, what am
>I doing wrong? because, as far as I know the hub must send all the
>packets that are meant for the PLC also to the PC.
>
>Thanks!
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