I have done several projects with AVRs and Ethernet interfaces. Primarily using the Xport devices although I did initially work with a Wiznet.
I now have a request from a client to create a very simple Ethernet control board with 16 inputs and 16 outputs. Which is very easy for a Xport/Avr combo.
However, the client also wants a redundant Ethernet port to implement HIPER Ring. Conceptually it seems as simple as an AVR/XPORT/Hub.
I have searched the internet and AVR Freaks for some hub ICs or other techniques to implement this. It seems like over kill to use a 32 bit processor just to drive a Ethernet switch IC or the MMI.
I am currently have a PICDEM.net 2 (say it ain't so) evaluation board. It has a processor with integrated MAC/Phy and the ENC28J60.
Has anyone implemented a dual Ethernet port with an AVR?
Any other ideas or links?