Chapter 51 DHCP
XMG1915 Series User’s Guide
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Figure 214 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 215 DHCP Relay for Two VLANs Configuration Example
51.7 DHCPv6 Relay
A DHCPv6 relay agent is on the same network as the DHCPv6 clients and helps forward messages
between the DHCPv6 server and clients. When a client cannot use its link-local address and a well-
known multicast address to locate a DHCPv6 server on its network, it then needs a DHCPv6 relay agent
to send a message to a DHCPv6 server that is not attached to the same network.
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
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