circuit-id
Syntax
Hierarchy Level
Release Information
Statement introduced in Junos OS 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.
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.
