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circuit-id

date_range 19-Nov-23

Syntax

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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.

Note:

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.)

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Junos CLI Reference

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circuit-id

Syntax

Hierarchy Level

Description

Default

Required Privilege Level

Release Information

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Junos CLI Reference

ON THIS PAGE

circuit-id

Syntax

Hierarchy Level

Description

Default

Required Privilege Level

Release Information

Related Documentation

Stay in touch