Circuit-Id; Example: Setting Up Dhcp Option 82 With An Ex Series Switch As Relay Agent - Juniper JUNOS OS 10.4 - FOR EX REV 1 Manual

circuit-id

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Copyright © 2010, Juniper Networks, Inc.
circuit-id {
prefix hostname;
use-interface-description;
use-vlan-id;
}
[edit ethernet-switching-options secure-access-port vlan (all | vlan-name) dhcp-option82]
[edit forwarding-options helpers bootp dhcp-option82]
[edit forwarding-options helpers bootp interface interface-name dhcp-option82]
Statement introduced in Junos OS Release 9.3 for EX Series switches.
Configure the suboption (suboption 1) of DHCP option 82 (the DHCP relay agent
circuit-id
information option) in DHCP packets destined for a DHCP server. This suboption identifies
the circuit (interface and/or VLAN) on which the DHCP request arrived.
The format of the
circuit-id
is interface-name:vlan-name
The remaining statements are explained separately.
If DCHP option 82 is enabled on the switch, the circuit ID is supplied by default in the
format interface-name:vlan-name
system—To view this statement in the configuration.
system-control—To add this statement to the configuration.
Example: Setting Up DHCP Option 82 on an EX Series Switch with No Relay Agent
Between Clients and DHCP Server on page 3122
Example: Setting Up DHCP Option 82 with an EX Series Switch as Relay Agent Between
Clients and a DHCP Server on page 3119
Setting Up DHCP Option 82 on the Switch with No Relay Agent Between Clients and
DHCP Server (CLI Procedure) on page 3153
Setting Up DHCP Option 82 with the Switch as a Relay Agent Between Clients and
DHCP Server (CLI Procedure) on page 3150
[edit forwarding-options] Configuration Statement Hierarchy on page 58
RFC 3046, DHCP Relay Agent Information Option, at
Chapter 104: Configuration Statements for Port Security
information for Gigabit Ethernet interfaces that use VLANs
. On a Layer 3 interface, the format is just
or, on a Layer 3 interface, just
interface-name.
interface-name .
http://tools.ietf.org/html/rfc3046.
3177