Configuring Network Interface (Network Setting)
How to set up your FortiWAN
Client ID Mapping
DHCP server assigns and manages IP addresses according to the client
ID of DHCP client (the Client Identifier, options code 61, in the options
field of DHCP request). An IP address that is mapped to a client ID here
is only available to this client. It will not be assigned to other clients even
it is idle. Define the mapping by specifying Client ID and the cor-
respondent IPv4 Address. Corresponding setting of client ID on a DHCP
client is required.
For DHCP working for IPv4 IP(s) in DMZ of
Bridge Mode: Multiple Static IP
, the IP addresses defined in
DHCP
Range
,
Static Mapping
or
Client ID Mapping
are required be defined in field
IPv4 IP(s) in DMZ
too.
DHCP Relay
DHCP relay is a proxy forwarding DHCP requests and responses between hosts and DHCP server across different
subnets. A router called DHCP relay agent acts the proxy receiving DHCP requests from hosts in the same subnet and
resending them to the DHCP server located in another subnet. The DHCP relay agent then delivers the DHCP
messages responded by the DHCP server to the hosts in the subnet, so that the hosts are assigned the IP addresses
and related information.
FortiWAN is the DHCP relay agent in the network once the DHCP Relay function is enable. Address allocation for
multiple subnets (subnet in LAN, subnet in DMZ, subnet in WAN and DMZ and IPs in DMZ) can be managed by a
centralized DHCP server. As the example below, FortiWAN relays the DHCP messages between the connected
subnets and the standalone DHCP server, so that one DHCP server manages the address allocation for the three
subnets, LAN 1, LAN 2 and a DMZ 1. As for subnet LAN 3, it employs FortiWAN's DHCP server on LAN port 3. The
enabled DHCP server on LAN port 3, which is independent from the standalone DHCP server, serves only subent LAN
3. Note that you can only enable either DHCP or DHCP Relay for a subnet.
FortiWAN Handbook
Fortinet Technologies Inc.
57
Содержание FortiWAN
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