TN-5516/5518 User’s Manual Featured Functions
3-82
Configuring Set Device IP
Desired IP Address
Setting Description Factory Default
IP Address Set the desired IP of connected devices. None
Configuring DHCP Relay Agent
The DHCP Relay Agent makes it possible for DHCP broadcast messages to be sent over routers.
The DHCP Relay Agent enables DHCP clients to obtain IP addresses from a DHCP server on a
remote subnet, or those that are not located on the local subnet.
DHCP option 82
Option 82 is used by the relay agent to insert additional information into the client’s DHCP
request. The Relay Agent Information option is inserted by the DHCP relay agent when
forwarding client-originated DHCP packets to a DHCP server. Servers recognize the Relay Agent
Information option and use the Information to implement IP address assignment policies to the
Client.
When Option 82 is enabled on the switch, a subscriber device or host is identified by the switch
port through which it connects to the network (in addition to its MAC address). Multiple hosts on
the subscriber LAN can be connected to the same port on the access switch and are uniquely
identified.
The Option 82 information contains 2 sub-options: Circuit ID and Remote ID, which define the
relationship between End Device IP and the DHCP option 82 server. The “Circuit ID” is a 4-byte
number generated by combining the Ethernet switch’s physical port number and VLAN ID. The
format of the “Circuit ID” is described below:
FF–VV–VV–PP
To Next Page
Loading...
Need help?
General
