Chapter 3: Featuring Configuration
– Web UI
Featuring Configuration
– Web UI
NGSM48T2 User Manual | 99
DHCP Relay Configuration
Configure DHCP Relay on this page.
Relay Mode
Indicates the DHCP relay mode operation. Possible modes are:
Enabled:
Enable DHCP relay mode operation. When DHCP relay mode operation is
enabled, the agent forwards and transfers DHCP messages between the clients and
the server when they are not in the same subnet domain. And the DHCP broadcast
message won't be flooded for security considerations.
Disabled:
Disable DHCP relay mode operation.
Relay Server
Indicates the DHCP relay server IP address. A DHCP relay agent is used to forward
and to transfer DHCP messages between the clients and the server when they are
not in the same subnet domain.
Relay Information Mode
Indicates the DHCP relay information mode option operation. The option 82 circuit
ID format as "[vlan_id][module_id][port_no]". The first four characters represent the
VLAN ID, the fifth and sixth characters are the module ID(in standalone device it
always equal 0, in stackable device it means switch ID). ), and the last two
characters are the port number. For example, "00030108" means the DHCP
message receive form VLAN ID 3, switch ID 1, port No 8. And the option 82 remote
ID value is equal the switch MAC address.
Possible modes are:
Enabled:
Enable DHCP relay information mode operation. When DHCP relay
information mode operation is enabled, the agent inserts specific information (option
82) into a DHCP message when forwarding to DHCP server and removes it from a
DHCP message when transferring to DHCP client. It only works when DHCP relay
operation mode is enabled.
Disabled:
Disable DHCP relay information mode operation.
