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prefix (Circuit ID for Option 82)

Syntax

prefix hostname;

Hierarchy Level

[edit ethernet-switching-options secure-access-port vlan (all | vlan-name) dhcp-option82 circuit-id][edit forwarding-options helpers bootp dhcp-option82 circuit-id] [edit forwarding-options helpers bootp interface interface-name dhcp-option82 circuit-id]

Release Information

Statement introduced in Junos OS Release 9.3 for EX Series switches.

Statement introduced in Junos OS Release 11.3 for the QFX Series.

Description

Configure an optional prefix for the circuit ID suboption in the DHCP option 82 information that is inserted by the switch into the packet header of a DHCP request before it forwards or relays the request to a DHCP server.

Default

If prefix is not explicitly specified, no prefix is appended to the circuit ID. When prefix is specified, it is specified as prefix hostname (and the value is the hostname of the switch).

Options

hostname—Name of the host system (the switch) that is forwarding or relaying the DHCP request from the DHCP client to the DHCP server.

Required Privilege Level

system—To view this statement in the configuration.

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