Dell Force10 S55T FTOS Command Line Reference Guide for the S55 System FTOS 8. - Page 955

Command History Related Commands Version 8.3.5.0 Version 7.8.1.0 Introduced on S55 Introduced on C-Series and S-Series show ip dhcp snooping Display the contents of the DHCP binding table. ip dhcp relay c s Enable Option 82. Syntax Parameters ip dhcp relay information-option [trust-downstream] trust-downstream Configure the system to trust Option 82 when it is received from the previous-hop router. Command Modes CONFIGURATION Default Command History Disabled Version 8.3.5.0 Version 7.8.1.0 Introduced on S55 Introduced on C-Series and S-Series ip dhcp snooping c s Enable DHCP Snooping globally. Syntax Command Modes [no] ip dhcp snooping CONFIGURATION Default Command History Disabled Version 8.3.5.0 Version 7.8.1.0 Introduced on S55 Introduced on C-Series and S-Series Usage Information Related Commands When enabled, no learning takes place until snooping is enabled on a VLAN. Upon disabling DHCP Snooping the binding table is deleted, and Option 82, IP Source Guard, and Dynamic ARP Inspection are disabled. ip dhcp snooping vlan Enable DHCP Snooping on one or more VLANs. ip dhcp snooping database c s Delay writing the binding table for a specified time. Syntax ip dhcp snooping database write-delay minutes Security | 955