Users Guide
anvltest@10.16.151.48's password:
Last login: Thu Jan 5 00:17:47 2012 from login-maa-101
[anvltest@dt-maa-linux-1 ~]# exit
logout
Dell#
Dell#ssh vrf vrf1 10.10.10.2 -l admin
Secure DHCP Commands
DHCP as dened 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 spoong and attacks.
clear ip dhcp snooping
Clear the DHCP binding table.
Syntax
clear ip dhcp snooping binding
Defaults none
Command Modes EXEC Privilege
Command History
This guide is platform-specic. 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
9.7(0.0) Introduced on the S6000–ON.
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.
Related Commands show ip dhcp snooping — displays 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 Congure 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
conguration enables the relay agent to include VRF related information when it
forwards the broadcasts from client to DHCP server.
Defaults Disabled.
Security
1387