Secure Dhcp Commands - Dell S4810 Reference Manual

Secure DHCP Commands

DHCP as defined by RFC 2131 provides no authentication or security mechanisms. Secure DHCP is a suite
of features that protects networks that use dynamic address allocation from spoofing and attacks.
clear ip dhcp snooping
Clear the DHCP binding table.
S4810
Syntax
clear ip dhcp snooping binding
Defaults none
Command EXEC Privilege
Modes
Command
This guide is platform-specific. For command information about other platforms,
History
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 9.0.2.0
Version
8.3.19.0
Version 8.3.11.1
Version 8.3.7.0
Version 7.8.1.0
Related show ip dhcp snooping
Commands
ip dhcp relay
Enable Option 82.
S4810
Syntax
ip dhcp relay information-option [trust-downstream | vrf]
Parameters
trust-
downstream
vrf
Defaults Disabled.
1526
Introduced on the S6000.
Introduced on the S4820T.
Introduced on the Z9000.
Introduced on the S4810.
Introduced on the C-Series and S-Series.
— displays the contents of the DHCP binding table.
Configure the system to trust Option 82 when it is received
from the previous-hop router.
Enter the keyword vrf to include VRF related information in
the Option 82. This configuration enables the relay agent to
include VRF related information when it forwards the
broadcasts from client to DHCP server.
Security