Related Topics
Enabling and Disabling Insertion of Option 82 Information

relay-option-82

Syntax


                        
                           relay-option-82 {
                           
                              
                                 circuit-id {
                                 
                                 prefix host-name
                                    logical-system-name routing-instance-name;
                                 
                                 }
                              
                           
                           }

Hierarchy Level


                        
                           [edit forwarding-options dhcp-relay],
                           
                           [edit forwarding-options dhcp-relay group group-name],
                           
                           [edit logical-systems logical-system-name forwarding-options dhcp-relay],
                           
                           [edit logical-systems logical-system-name forwarding-options dhcp-relay group group-name],
                           
                           [edit logical-systems logical-system-name routing-instances routing-instance-name forwarding-options dhcp-relay],
                           
                           [edit logical-systems logical-system-name routing-instances routing-instance-name forwarding-options
                              dhcp-relay group group-name],
                           
                           [edit routing-instances routing-instance-name forwarding-options dhcp-relay],
                           
                           [edit routing-instances routing-instance-name forwarding-options dhcp-relay group group-name]

Release Information

Statement introduced in JUNOS Release 8.3.

Description

Enable or disable the insertion of the DHCP relay agent information option (option 82) in DHCP packets destined for a DHCP server.

If you enable insertion of option 82 information in DHCP packets, you must specify at least the circuit-id statement to include the agent-circuit-id suboption (suboption 1) of the DHCP relay agent information option. Optionally, you can also specify the prefix statement to add a prefix to the base option 82 information that consists of any combination of the hostname, logical system name, and routing instance name. Specifying the relay-option-82 statement with no subordinate statements disables insertion of option 82 information in DHCP packets, which is the default behavior.

You can use the relay-option-82 statement and its subordinate statements at the [edit forwarding-options dhcp-relay] hierarchy level to control insertion of option 82 information globally, or at the [edit forwarding-options dhcp-relay group group-name] hierarchy level to control insertion of option 82 information for a named group of interfaces.

The statements are explained separately.

Required Privilege Level

interface—To view this statement in the configuration.

interface-control—To add this statement to the configuration.