Users Guide

Layer 2 Switching Commands 338
DHCP Layer 2 Relay Commands
Dell EMC Networking N1100-ON/N1500/N2000/N2100-ON/N2200-
ON/N3000-ON/N3100-ON/N3200-ON Series Switches
In the majority of network configurations, DHCP clients and their associated
servers do not reside on the same IP network or subnet. Therefore, some kind
of third-party agent is required to transfer DHCP messages between clients
and servers. Such an agent is known as a DHCP Relay agent.
The DHCP Relay agent accepts DHCP requests from any routed interface,
including VLANs. The agent relays requests from a subnet without a DHCP
server to a server or next-hop agent on another subnet. Unlike a router which
switches IP packets transparently, a DHCP Relay agent processes DHCP
messages and generates new DHCP messages as a result.
The Dell EMC Networking DHCP Relay supports DHCP Option 82 circuit-
id and remote-id for a VLAN.
dhcp l2relay (Global Configuration)
Use the dhcp l2relay command to enable Layer 2 DHCP Relay functionality.
The subsequent commands mentioned in this section can only be used when
the L2-DHCP Relay is enabled. Use the no form of this command to disable
L2-DHCP Relay.
Syntax
dhcp l2relay
no dhcp l2relay
Default Configuration
DHCP L2 Relay is disabled by default.
Command Mode
Global Configuration.
User Guidelines
There are no user guidelines for this command.