ECS4660-28F_Management Guide-R03

C HAPTER 17 | IP Services
Dynamic Host Configuration Protocol
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PARAMETERS
These parameters are displayed:
◆ VLAN – ID of configured VLAN.
◆ Vendor Class ID – The following options are supported when the
check box is marked to enable this feature:
■
Default – The default string is ECS4660-28F.
■
Text – A text string. (Range: 1-32 characters)
■
Hex – A hexadecimal value. (Range: 1-64 characters)
WEB INTERFACE
To configure a DHCP client identifier:
1. Click IP Service, DHCP, Client.
2. Mark the check box to enable this feature. Select the default setting, or
the format for a vendor class identifier. If a non-default value is used,
enter a text string or hexadecimal value.
3. Click Apply.
Figure 423: Specifying A DHCP Client Identifier
CONFIGURING
DHCP RELAY
SERVICE
Use the IP Service > DHCP > Relay page to configure DHCP relay service
for attached host devices. If DHCP relay is enabled, and this switch sees a
DHCP request broadcast, it inserts its own IP address into the request so
that the DHCP server will know the subnet where the client is located.
Then, the switch forwards the packet to the DHCP server. When the server
receives the DHCP request, it allocates a free IP address for the DHCP
client from its defined scope for the DHCP client’s subnet, and sends a
DHCP response back to the DHCP relay agent (i.e., this switch). This switch
then broadcasts the DHCP response received from the server to the client.