Overview
The DHCP server is well suited to networks where:
Manual configuration and centralized management are difficult to implement.
Many hosts need to acquire IP addresses dynamically. This may be because the number of hosts exceeds the number of assignable IP addresses, so it is impossible to assign a fixed IP address to each host. For example, an ISP has a limited number of host addresses.
A few hosts need fixed IP addresses.
In addition to assigning IP addresses to DHCP clients on public networks, a multi-VPN-instance customer edge (MCE) serving as the DHCP server can also assign IP addresses to DHCP clients on private networks. Note that the IP address ranges of public and private networks or those of private networks on the DHCP server cannot overlap each other. For more information about MCE, see MPLS Configuration Guide.