Administrator Guide

Related Commands
• show ip dhcp snooping — display the contents of the DHCP binding table.
ip dhcp relay
Enable Option 82.
Syntax
ip dhcp relay information-option [trust-downstream | vrf]
Parameters
trust-downstream Congure the system to trust Option 82 when it is received from the previous-hop router.
vrf Enter the keyword vrf to include VRF related information in the Option 82. This
conguration enables the relay agent to include VRF related information when it forwards
the broadcasts from client to DHCP server.
Defaults Disabled.
Command Modes CONFIGURATION
Command History
This guide is platform-specic. For command information about other platforms, see the relevant Dell Networking
OS Command Line Reference Guide.
Version Description
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.
9.2(1.0) Introduced on the Z9500.
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.
7.8.1.0 Introduced on the C-Series and S-Series.
ip dhcp snooping
Enable DHCP Snooping globally.
Syntax
[no] ip dhcp snooping
Defaults Disabled.
Command Modes CONFIGURATION
Command History
This guide is platform-specic. For command information about other platforms, see the relevant Dell Networking
OS Command Line Reference Guide.
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