TECHNOLOGY NEWS

Disclosure of the DHCP (Discover) DHCP client broadcasts DHCPDISCOVER request packet configuration, providing its MAC address and host name. If the client had previously assigned IP address, it also sends this information in the Options box to the desired address. In this way, the customer often keeps the same address, even if it has been disabled for longer than the duration of his lease. DHCP Offer Each DHCP server receives the request corresponds to the emission DHCPOFFER packet containing the offered IP address (if one or more unallocated) and its own IP address. DHCP servers on the far end router can respond to DHCPDISCOVER emissions, provided that the router is enabled to send DHCP traffic emissions. DHCP request (Request) This is another package is also sent by the client as a broadcast. The reason for doing so is the need to notify one server to accept the offer and, simultaneously, all the other to reject it. When you receive numerous offers DHCP, decision-making process by the Microsoft customer goes as follows: * DHCP client accepts an offer from the server, which allocate the IP address used recently, * If the server is allocating an earlier address does not match, assumed the first offer received. Confirmation of the DHCP DHCP Server officially assigns the address of the desired client in the DHCPACK packet emissions. The package also includes a set of optional request parameters, the total length of the lease period and to address the renewal periods. The server stores this information in its database as an assigned lease.