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Configuration Guide - IP Service

CloudEngine 12800 and 12800E V200R005C00

This document describes the configurations of IP Service, including IP address, ARP, DHCP, DNS, IP performance optimization, IPv6, DHCPv6, and IPv6 DNS.
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Application Scenarios of the DHCP Relay Agent

Application Scenarios of the DHCP Relay Agent

Figure 3-13 shows the typical networking of the DHCP relay.

Figure 3-13 Typical networking of the DHCP relay

The earlier DHCP protocol applies only to the scenario that the DHCP client and DHCP server are on the same network segment. To dynamically assign IP addresses to clients on different network segments, the network administrator needs to configure a DHCP server on each network segment, which increases costs.

The DHCP relay function is introduced to solve this issue. A DHCP client can obtain a valid IP address from a DHCP server on another network segment through a DHCP relay agent. In this manner, DHCP clients on multiple network segments can share one DHCP server. This reduces costs and facilitates centralized management.

Updated: 2019-04-18

Document ID: EDOC1100039535

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