> On Jun 17, 2020, at 13:14, Dovid Bender <do...@telecurve.com> wrote:
>
> Hi,
>
> I am sorry if this is off topic.I was once demoed a network device that had
> two interfaces. The traffic would go through the device. If there was a power
> cut or some other malfunction there would be a relay that would physically
> bridge the two network interfaces so the traffic would flow as if it was just
> a network cable. Is anyone aware of such a network card or device?
that kind of device is an ethernet bypass tap. the device is relay driven and
closes when it loses power bypassing the in-band device.
there are others which require that they remain powered, but use a heatbeat of
some flavor to detect failures and switch the path accordingly.
copper tap infrastructure has kind of fallen out of favor as ports have gotten
faster (vs just spanning on a switch or router or passive optical taps) but it
still exists.
gigamon / niagra and a number of white-box tap manufactures make device that
would be referred to as active bypass taps.
>
> TIA.
>
>
