CLI Guide

circuit-id Enter the keyword circuit-id to configure the system to enable the circuit-id
string in option–82.
circuit-id
hostname:port
Enter the keywords circuit-id hostname:port to configure the circuit-id
format that is sent to the server.
trust-
downstream
Configure the system to trust Option 82 when it is received from the previous-hop
router.
vpn Enter the keyword vpn to add VPN/VRF related sub-option to relay agent
information Option 82.
NOTE: Adds the VPN/VRF related sub-options into the relay agent
information option(82). When DHCP broadcasts are forwarded by the relay
agent from clients to DHCP server.
Default Disabled.
Command Modes CONFIGURATION
Command
History
This guide is platform-specific. For command information about other platforms, see the relevant Dell
EMC Networking OS Command Line Reference Guide.
Version Description
9.11(2.0P0) Introduced the circuit-id attribute in the command.
9.10(0.1) Introduced on the S6010-ON and S4048T-ON.
9.10(0.0) Introduced on the S3148.
9.10(0.0) Introduced on the S6100-ON.
9.8(2.0) Introduced on the S3100 series.
9.8(1.0) Introduced on the Z9100–ON.
9.8(0.0P5) Introduced on the S4048-ON.
9.8(0.0P2) Introduced on the S3048-ON.
9.7(0.0) Introduced on the S6000-ON.
9.4.(0.0) Added support for VRF.
9.0.2.0 Introduced on the S6000.
8.3.19.0 Introduced on the S4820T.
8.3.11.1 Introduced on the Z9000.
8.3.7.0 Introduced on the S4810.
8.3.1.0 Introduced on the E-Series.
7.8.1.0 Introduced on C-Series and S-Series.
Example
DellEMC(conf)# ip dhcp relay information-option vpn
ip dhcp relay source-interface
Configure IPv4 DHCP relay source interface.
Syntax
ip dhcp relay source–interface interface
To disable the IPv4 DHCP relay source interface, use the no ip dhcp relay source–interface
interface command.
Dynamic Host Configuration Protocol (DHCP) 573