prefix (Circuit ID for Option 82)
Syntax
prefix {
host-name;
logical-system-name;
routing-instance-name;
}
Hierarchy Level
For platforms with enhanced Layer 2 software (ELS):
[edit vlans forwarding-options dhcp-security option-82 circuit-id]
For platforms without ELS:
[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]
For MX Series platforms:
[edit bridge-domains bridge-domain-name forwarding-options dhcp-security option-82circuit-id]
Description
Configure an optional prefix for the circuit ID suboption in the DHCP option 82 information that is inserted by the switch or router into the packet header of a DHCP request before it forwards or relays the request to a DHCP server.
Default
If the prefix statement is not explicitly specified, no prefix is
prepended to the circuit ID.
Options
host-name |
Add router host name to DHCP option 82 circuit ID. |
logical-system-name |
Add logical system name to DHCP option-82 circuit ID. This option is not used for the |
routing-instance-name |
Add routing instance name to DHCP option-82 circuit ID. This option is not used for the
|
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
option-82 circuit-id] introduced in Junos OS Release 13.2X50-D10. (See Using the Enhanced Layer
2 Software CLI for information about ELS.)