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option-82

date_range 20-Nov-23

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Syntax

option-82 {
    circuit-id {
        prefix (host-name | routing-instance-name);
        use-interface-description;
        use-vlan-id;
    }
    remote-id {
        host-name;
        mac (Option 82);
        use-interface-description;
        use-string                         string;
    }
    vendor-id {
        use-string                         string;
    }
}

Hierarchy Level (EX Series, QFX Series)

[edit vlans vlan-name forwarding-options dhcp-security]

Hierarchy Level (MX Series)

[edit bridge-domains bridge-domain-name forwarding-options dhcp-security]

Description

Have the device insert DHCP option 82 (also known as the DHCP relay agent information option) information in the DHCP request packet header of a DHCP request that it receives from a DHCP client connected to one of its interfaces before it forwards or relays that DHCP request to a DHCP server. The server uses the option 82 information, which provides details about the circuit and host the request came from. However, in formulating the reply, the server does not make any changes to the option 82 information in the packet header. The device receives the reply and then removes the DHCP option 82 information before forwarding the reply to the client.

The remaining statements are explained separately. See CLI Explorer.

Default

Insertion of DHCP option 82 information is not enabled.

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 13.2X50-D10.

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Junos CLI Reference

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option-82

Syntax

Hierarchy Level (EX Series, QFX Series)

Hierarchy Level (MX Series)

Description

Default

Required Privilege Level

Release Information

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Junos CLI Reference

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option-82

Syntax

Hierarchy Level (EX Series, QFX Series)

Hierarchy Level (MX Series)

Description

Default

Required Privilege Level

Release Information

Related Documentation

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