F3726, F3211, F3174, R5135, R3816-HP Firewalls and UTM Devices Network Management Configuration Guide-6PW100

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12BConfiguring the DHCP relay agent
The DHCP relay agent configuration is supported only on Layer 3 Ethernet interfaces (or subinterfaces),
virtual Ethernet interfaces (or subinterfaces), VLAN interfaces, and Layer 3 aggregate interfaces.
105B
Overview
The DHCP relay agent enables clients to get IP addresses from a DHCP server on another subnet. This
feature avoids deploying a DHCP server for each subnet, centralizes management, and reduces
investment.
510BFundamentals
2393HFigure 111 shows a typical application of the DHCP relay agent.
Figure 111 DHCP relay agent application
The DHCP server and client interact with each other in the same way regardless of whether the relay
agent exists (see "
2394HDHCP overview").
Figure 112 DHCP relay agent work process