DHCP/BOOTP Relay for EX Series Switches Overview
You can configure the Juniper Networks EX Series Ethernet Switch to act as a Dynamic Host Configuration Protocol (DHCP) or Bootstrap Protocol (BOOTP) relay agent. This means that a locally attached host can issue a DHCP or BOOTP request as a broadcast message. If the switch sees this broadcast message, it relays the message to a specified DHCP or BOOTP server. You should configure the switch to be a DHCP/BOOTP relay agent if you have locally attached hosts and a distant DHCP or BOOTP server.
For detailed information about configuring a DHCP/BOOTP relay
agent, see the Junos OS Policy Framework Configuration Guide at http://www.juniper.net/techpubs/software/junos/index.html
software/junos/junos101/index.html.
You can configure an EX Series Switch to use the gateway IP address (giaddr) as the source IP address of the switch for relayed DHCP packets when the switch is used as the DHCP relay agent. For information on configuring this option, see the source-address-giaddr configuration statement.
 | Note: Because DHCP/BOOTP messages are broadcast and are not directed to a specific server, switch, or router, EX Series switches cannot function as both a DHCP server and a DHCP/BOOTP relay agent at the same time. The Junos operating system (Junos OS) generates a commit error if both options are configured at the same time, and the commit will not succeed until one of the options is removed. |
Related Topics
- For information about configuring the switch as a DHCP/BOOTP relay agent, see the Junos OS Policy Framework Configuration Guide at http://www.juniper.net/techpubs/software/junos/index.html.
- DHCP Services for EX Series Switches Overview
