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• circuit-id    

• Related Topics
• Example: Setting Up DHCP Option 82 on an EX Series Switch with No Relay Agent Between Clients and DHCP Server
• Example: Setting Up DHCP Option 82 with an EX Series Switch as Relay Agent Between Clients and a DHCP Server
• Setting Up DHCP Option 82 on the Switch with No Relay Agent Between Clients and DHCP Server (CLI Procedure)
• Setting Up DHCP Option 82 with the Switch as a Relay Agent Between Clients and DHCP Server (CLI Procedure)
• [edit forwarding-options] Configuration Statement Hierarchy
• RFC 3046, DHCP Relay Agent Information Option, at http://tools.ietf.org/html/rfc3046.

circuit-id

Syntax

Hierarchy Level

Release Information

Statement introduced in JUNOS Release 9.3 for EX Series switches.

Description

Configure the circuit-id suboption (suboption 1) of DHCP option 82 (the DHCP relay agent information option) in DHCP packets destined for a DHCP server. This suboption identifies the circuit (interface and/or VLAN) on which the DHCP request arrived.

The format of the circuit-id information for Gigabit Ethernet interfaces that use VLANs is interface-name:vlan-name . On a Layer 3 interface, the format is just interface-name.

The remaining statements are explained separately.

Default

If DCHP option 82 is enabled on the switch, the circuit ID is supplied by default in the format interface-name:vlan-name or, on a Layer 3 interface, just interface-name .

Required Privilege Level

routing—To view this statement in the configuration.

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