Does Dell's iDRAC come with its own Ethernet Port, or will I have to dedicate one of my regular Ethernet ports (Broadcom onboard) for the DRAC IPKVM traffic?
Dell provide an integrated BMC(IPMI) and basic iDRAC services on virtually all current generation servers as standard - they call this iDRAC6 Express. It does not support out of band Console access (apart from Serial over LAN which is a fairly limited text mode console) and uses one of the onboard Broadcom LOM's. The only current generation Dell servers where the iDRAC6 Express is not a standard feature that I'm aware of are the T110 and the C-Series range of high density systems.
iDRAC6 Enterprise is an extra cost on most systems where it is supported and that adds a dedicated management port, full remote console that supports GUI interfaces, and some other features. The only systems that come with this as standard are the M Series Blade servers.