In the last episode (May 15), Greg Lehey said:
> OK, now maybe I'm missing something here. But an Ethernet address is
> used to identify a board. Arp binds it to an IP address. An IP
> address is bound to a network. So if you're on a different network,
> you get a different IP address. Why do you need the same Ethernet
> address?
I don't think anyone mentioned anything about having the cards on two
networks. In that case, you're right, having two cards with the same
MAC address doesn't help one bit.
> This is very different from having two boards on the same network,
> both with the same Ethernet address. As I observed earlier, that does
> make sense, but it's a hot standby situation. I can't see any point
> in arranging for both of them to accept or send data.
Doubles the bandwidth. Especially if you are talking to multiple
machines (i.e. talk to two regular boxes at 100mbit/sec each), or have
another box hooked up the same way (200mbit/sec to it). Since both
cards in the server have the same MAC address, the client boxes don't
know anything's unusual.
-Dan
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