Configuring the Device for DHCP

A Dynamic Host Configuration Protocol (DHCP) server can automatically allocate IP addresses and also deliver configuration settings to client hosts on a subnet. DHCP lets network administrators centrally manage a pool of IP addresses among hosts and automate the assignment of IP addresses in a network. An IP address can be leased to a host for a limited period of time, allowing the DHCP server to share a limited number of IP addresses among a group of hosts that do not need permanent IP addresses.

The J Series or SRX Series device acts as the DHCP server, providing IP addresses and settings to hosts, such as PCs, that are connected to device interfaces. The DHCP server is compatible with the DHCP servers of other vendors on the network.

The device can also operate as a DHCP client and DHCP relay agent.

You can use J-Web Quick Configuration or a configuration editor to configure DHCP on the device.

For information about which devices support the features documented in this chapter, see the Junos OS Feature Support Reference for SRX Series and J Series Devices.

This chapter contains the following topics.

• DHCP Terms
• DHCP Overview
• Before You Begin
• Configuring DHCP with Quick Configuration
• Configuring DHCP with a Configuration Editor
• Verifying a DHCP Configuration