DHCP Message Exchanges
This section describes the typical DHCP message exchanges for obtaining and renewing a DHCP-leased IP address configuration and for detecting unauthorized DHCP servers.
Obtaining an Initial Lease
Figure 14-3 shows the exchange of DHCP messages when a DHCP client and DHCP server are on the same subnet and a DHCP client acquires an initial lease.
Figure 14-3. DHCP messages exchanged during initial lease acquisition
An example of this message exchange is Capture 14-01, a Network Monitor trace that is included in the \Captures folder on the companion CD-ROM. The following is the DHCPDISCOVER message (Frame 1) from Capture 14-01 as ...
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