Switch Acts As Relay Agent; Figure 71: Switch Is The Dhcp Server - Juniper JUNOS OS 10.4 - FOR EX REV 1 Manual

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Figure 71: Switch Is the DHCP Server

Switch Acts as Relay Agent

The switch functions as a relay agent when the DHCP clients or the DHCP server is
connected to the switch through a Layer 3 interface (on the switch, these interfaces are
configured as routed VLAN interfaces, or RVIs). These trunk interfaces are trusted by
default.
These two scenarios illustrate the switch acting as a relay agent:
The DHCP server and clients are in different VLANs.
The switch is connected to a router that is in turn connected to the DHCP server. See
Figure 72 on page 3058.
Chapter 99: Port Security Overview
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