NETGEAR M4350-24F4V 24-Port 10G SFP+ Managed AV Network Switch - Manual (Page 142)

This is the interface or VLAN that is connected to the DHCP servers that are located
in a different IP subnet.
11. Click the Apply button.
Your settings are saved.
12. To save the settings to the running configuration, click the Save icon.
DHCP Layer 2 relay
If you enable and configure a DHCP relay agent on the switch, some Layer 2 (L2) devices
do not need to connect to a DHCP server on the physical network. A relay agent
automatically populates the gateway IP address (giaddr) field and adds the Relay Agent
Information option to DHCP messages. A DHCP server uses this option for IP addresses
and other assignment policies. A DHCP relay agent is usually an IP routing-aware device,
which is also referred to as a Layer 3 relay agent. In some network configurations, L2
devices must append the Relay Agent Information option because they are closer to
the end hosts.
An L2 device can operate as a bridge only for a network and might not include an IPv4
address on the network. If an L2 device lacks an IPv4 source address, the device cannot
relay packets directly to a DHCP server that is located on another network. In that
situation, the L2 device can append the Relay Agent Information option and broadcast
the DHCP message.
Configure the global DHCP L2 relay settings
To configure the global DHCP L2 relay settings:
1. Launch a web browser.
2. In the address field of your web browser, enter the IP address of the switch.
If you do not know the IP address of the switch, see Log in to the main UI with a web
browser on page 27 and the subsections.
The login page displays.
3. Click the Main UI Login button.
The main UI login page displays in a new tab.
4. Enter admin as the user name, enter your local device password, and click the Login
button.
The first time that you log in, no password is required. However, you then must
specify a local device password to use each subsequent time that you log in.
Main User Manual 142 Configure Switch System
Information
Fully Managed Switches M4350 Series Main User Manual