ZyXEL Communications XS3800-28, User Manual, Page: 482 / 789

Chapter 64 DHCP
XS3800-28 User’s Guide
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Figure 375 DHCP Relay for Two VLANs
For the example network, add two entries in DHCP Relay VLAN Setting section of the NETWORKING >
DHCP > DHCPv4 Relay > DHCP Relay VLAN Setting screen as shown.
Figure 376 DHCP Relay for Two VLANs Configuration Example
64.9 DHCPv6 Relay
A DHCPv6 relay agent is on the same network as the DHCPv6 clients and helps forward messages
between the DHCPv6 server (that is in another network) and the DHCPv6 clients.
The DHCPv6 relay agent can add the remote identification (remote-ID) option and the interface-ID
option to the Relay-Forward DHCPv6 messages. The remote-ID option carries a user-defined string, such
as the system name. The interface-ID option provides slot number, port information and the VLAN ID to
the DHCPv6 server. The remote-ID option (if any) is stripped from the Relay-Reply messages before the
relay agent sends the packets to the clients. The DHCPv6 server copies the interface-ID option from the
VLAN 1
VLAN 2