ISP Redundancy Explained???

[NickBrandson]

For Outgoing traffic,
Does anyone know how the ISP Redundancy works at the background?
Gone thru the manual thoroughly, it did not mention a word what method for outgoing loadsharing used.
Is it a round-robin or Less-Round-trip-time amongst two ISPs?

For incoming, does it mean we have to point NameServer record of www.mycompany.com to our firewall gateway if we have configured the mini-DNS on the gateway for both ISPs and let the gateway to reply to those queries to www.mycompany.com?

thx
Nick

[Porter]

don't know how it exactly works, you can see your outgoing session switched between the two links in the log

there are two ways I know, you can point SOA to the both external interfaces of your gw, I've heard that works but I did it like cp recommends it, setup two dns serves behind the gw, primary zone or deligation, setup the dns proxy and address translation.