circuit-id
Syntax
circuit-id {
prefix {
host-name;
logical-system-name;
routing-instance-name;
}
use-interface-description (device | logical);
use-vlan-id;
}
Hierarchy Level
For platforms with Enhanced Layer 2 Software (ELS):
[edit vlans vlan-name forwarding-options dhcp-security option-82 ]
For MX Series platforms:
[edit bridge-domains bridge-domain-name forwarding-options dhcp-security option-82]
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 (the interface, the VLAN, or both) on which the DHCP request
arrived.
The remaining statements are explained separately. See CLI Explorer.
Default
If DHCP 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.
When you configure circuit-id, remote-id is also enabled,
even if you do not explicitly configure remote-id .
Required Privilege Level
system—To view this statement in the configuration.
system-control—To add this statement to the configuration.
Release Information
Statement introduced in Junos OS Release 9.3.
Hierarchy level [edit vlans vlan-name forwarding-options dhcp-security] introduced in Junos OS Release 13.2X50-D10. (See Using the Enhanced Layer
2 Software CLI for information about ELS.)