Dell C1048P Port Extender Networking Command-Line Reference Guide for the C900 - Page 695

Version 7.8.1.0 Description Introduced on the C-Series and S-Series on Layer 3 interfaces. Usage Information When enabled, no learning takes place until you enable snooping on a VLAN. After disabling DHCP snooping, the binding table deletes and Option 82, IP Source Guard, and Dynamic ARP Inspection are disabled. DHCP snooping supports Layer 3 using DHCP Relay Agent (ip helper-address) and Layer 2. You do not have to enable relay agent to snoop on Layer 2 interfaces. Related Commands ip dhcp snooping vlan - enables DHCP snooping on one or more VLANs. ip dhcp snooping binding Create a static entry in the DHCP binding table. C9000 Series Syntax Parameters [no] ip dhcp snooping binding mac address vlan-id vlan-id ip ip-address interface type slot/port lease number mac address vlan-id vlan-id ip ip-address interface type Enter the keyword mac then the MAC address of the host to which the server is leasing the IP address. Enter the keywords vlan-id then the VLAN to which the host belongs. The range is from 2 to 4094. Enter the keyword ip then the IP address that the server is leasing. Enter the keyword interface then the type of interface to which the host is connected: • For a 10-Gigabit Ethernet interface, enter the keyword tengigabitethernet. • For a 40-Gigabit Ethernet interface, enter the keyword fortyGigE. • For a port extender (PE) Gigabit Ethernet interface, enter the keyword peGigE then the pe-id /stack-unit / port-id information. slot/port lease time Enter the slot and port number of the interface. Enter the keyword lease then the amount of time the IP address are leased. The range is from 1 to 4294967295. Defaults Command Modes none • EXEC • EXEC Privilege Command History This guide is platform-specific. For command information about other platforms, refer to the relevant Dell Networking OS Command Line Reference Guide. Dynamic Host Configuration Protocol (DHCP) 695