TP-Link T3700G-52TQ T3700G-52TQUN V1 User Guide - Page 350
Dhcp-discover Stage
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Figure 14-5 Network diagram for DHCP-snooping implementation For different DHCP Clients, DHCP Server provides three IP address assigning methods: (1) Manually assign the IP address: Allows the administrator to bind the static IP address to the specific Client (e.g.: WWW Server) via the DHCP Server. (2) Automatically assign the IP address: DHCP Server assigns the IP address without an expiration time limitation to the Clients. (3) Dynamically assign the IP address: DHCP Server assigns the IP address with an expiration time. When the time for the IP address expired, the Client should apply for a new one. The most Clients obtain the IP addresses dynamically, which is illustrated in the following figure. Figure 14-6 Interaction between a DHCP client and a DHCP server (1) DHCP-DISCOVER Stage: The Client broadcasts the DHCP-DISCOVER packet to find the DHCP Server. 337