Service Manual

ip dhcp relay information-option
Enable Option 82.
Syntax
ip dhcp relay information-option [trust-downstream] [vpn]
Parameters
trust-downstream Congure 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-specic. For command information about other platforms, refer to the relevant Dell
Networking OS Command Line Reference Guide.
The following is a list of the Dell Networking OS version history for this command.
Version Description
9.8(0.0) Introduced on the S3048-ON and S4048-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
Dell(conf)#ip dhcp relay information-option vpn
ip dhcp snooping verify mac-address
Validate a DHCP packet’s source hardware address against the client hardware address eld (CHADDR) in the payload.
Syntax
[no] ip dhcp snooping verify mac-address
Defaults Disabled
Command Modes CONFIGURATION
516
Dynamic Host Conguration Protocol (DHCP)