Dell PowerSwitch S5212F-ON EMC SmartFabric OS10 User Guide Release 10.5.0 - Page 230
ip dhcp snooping (interface), ip dhcp snooping binding, ip dhcp snooping trust
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ip dhcp snooping (interface) Enables DHCP snooping on a VLAN. Syntax ip dhcp snooping Parameters None Defaults Enabled if enabled globally Command Mode INTERFACE VLAN Usage Information 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 portchannel 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 None Command Mode CONFIGURATION Usage Information When you create a static DHCP snooping entry, it does not time out. Before creating a static entry for a VLAN, create the VLAN. If you do not create a VLAN before creating a static entry, the system displays an error message. Before deleting a port-channel or VLAN, remove any associated DHCP snooping entries. This command is accessible to users with sysadmin and secadmin roles. The no version of this command deletes the static entry from the DHCP snooping binding table. Example OS10(config)# ip dhcp snooping binding mac 00:04:96:70:8a:12 vlan 100 ip 100.1.1.2 interface ethernet 1/1/4 Supported Releases 10.5.0 or later ip dhcp snooping trust Configures an interface as trusted in a DHCP snooping enabled VLAN. Syntax ip dhcp snooping trust 230 System management
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