CLI Guide

NOTE: For rhostfile and pub-key-file, the administrator must FTP the le to the
chassis.
Example
Dell#conf
Dell(conf)# ip ssh pub-key-file flash://knownhosts
Dell(conf)#
Related Commands show ip ssh client-pub-keys — displays the client-public keys used for the host-based authentication.
Secure DHCP Commands
The dynamic host conguration protocol (DHCP) as dened 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 spoong and attacks.
clear ip dhcp snooping
Clear the DHCP binding table.
Syntax
clear ip dhcp snooping binding
Defaults none
Command Modes EXEC Privilege
Supported Modes Full–Switch
Command History
Version Description
9.9(0.0) Introduced on the FN IOM.
8.3.16.1 Introduced on the MXL 10/40GbE Switch IO Module.
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]
Parameters
trust-downstream Congure the system to trust Option 82 when it is received from the previous-hop router.
Defaults Disabled.
Command Modes CONFIGURATION
Supported Modes Full–Switch
Command History
Version Description
9.9(0.0) Introduced on the FN IOM.
8.3.16.1 Introduced on the MXL 10/40GbE Switch IO Module.
1178 Security