Dell PowerSwitch S4112F-ON EMC SmartFabric OS10 User Guide Release 10.5.1 - Page 239
ip dhcp snooping (interface), ip dhcp snooping binding
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Command Mode Usage Information Example CONFIGURATION When you enable this feature, the switch begins to monitor all transactions between DHCP servers and DHCP clients and use the information to build the DHCP snooping binding table. If you disable DHCP snooping, the system removes the DHCP snooping binding table. Source Address Validation and Dynamic ARP Inspection entries are also removed. This command is accessible to users with sysadmin and secadmin roles. The no version of this command disables DHCP snooping globally. OS10(config)# ip dhcp snooping Supported Releases 10.5.0 or later or later ip dhcp snooping (interface) Enables DHCP snooping on a VLAN. Syntax Parameters Defaults Command Mode Usage Information ip dhcp snooping None Enabled if enabled globally INTERFACE VLAN When you enable this feature, the switch begins to monitor all transactions between DHCP servers and DHCP clients and use the information to build the DHCP snooping binding table. The system snoops packets from DHCP clients on the DHCP snooping-enabled VLAN and forwards the packets to all physical and port-channel interfaces of the VLAN. The system processes DHCP server packets that are received through trusted physical interfaces and port-channel interfaces and forwards the packets to all VLAN member interfaces. You can enable DHCP snooping globally and disable it on an interface. This command is accessible to users with sysadmin and secadmin roles. The no version of this command disables DHCP snooping on the interface. Example OS10(conf-if-vl-4)# ip dhcp snooping Supported Releases 10.5.0 or later or later ip dhcp snooping binding Create a static DHCP snooping binding entry in the DHCP binding table. Syntax Parameters ip dhcp snooping binding mac address vlan vlan-id ip ip-address interface [ethernet slot/port/sub-port | port-channel port-channel-id | VLTi] ● mac address-Enter the MAC address of the host to which the server is leasing the IP address. ● vlan vlan-id-Enter the VLAN ID of the VLAN the host belongs to. The range is from 1 to 4093. ● ip ip-address-Enter the IP address of the host. ● interface interface-type-Enter the interface type information. Defaults Command Mode Usage Information None CONFIGURATION When you create a static DHCP snooping entry, it does not time out. System management 239
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