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 Networking
OS Command Line Reference Guide
.
Version
Description
9.11(2.0P0)
Introduced the
circuit-id
attribute in the command.
9.10(0.0)
Introduced on the S6100-ON.
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
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 field (CHADDR) in the payload.
Syntax
[no] ip dhcp snooping verify mac-address
Defaults
Disabled
Command Modes
CONFIGURATION
Dynamic Host Configuration Protocol (DHCP)
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