IP-Link in the DHCP Environment
This section describes the IP-link in the DHCP environment.
As shown in Figure 1, the FW serves as the egress gateway and adopts dual uplinks. On the active link, the FW serves as the DHCP client to obtain an IP address. The standby link is a PPPoE one. When IP-link is performed on the link behind the DHCP server, the FW obtains the gateway address as the next hop for IP-link. If you identify that the link after the DHCP server is faulty, switch the FW to the backup link.
