DHCP手册第二版,内容很全。InthissecondeditionofTheDHCPHandbook,theauthorshaveupdatedtheirdescriptionofthedetailsofDHCPtoincludenewDHCPoptionsandmessages.SeveralnewDHCPoptionshavebeendefinedsincethepublicationofthefirstedition,includingamechanismfortheauthenticationofDHCPmessages,theRelayAgent