[c-nsp] Galvanic isolation for Ethernet?

[A.L.M.Buxey at lboro.ac.uk]

Hi,

> Do you know any devices to provide galvanic isolation for twisted pair
> Ethernet? 
> 
> We have regular Ethernet surge protection devices (AFAIK APC) between
> the switch and the attached equipment but they don't help. This is the
> second Catalyst already with a burnt group of ports.

whats the isolation for? whats causing the issue? 

alan