UMN:CLI User ManualV8102438Command Mode Descriptionshow ipv6 dhcp binding EnableGlobalShows all automatic client bindings for the specific IPaddress from the DHCPv6 server binding table.To delete/reset the configured bindings of DHCPv6 server, use the following command.Command Mode Descriptionclear ipv6 dhcp binding EnableGlobalClears an automatic address binding from the DHCPv6server database.9.7.2 DHCPv6 SnoopingFor enhanced security, the V8102 provides the DHCP snooping feature. The DHCPsnooping filters untrusted DHCP messages and maintains a DHCP snooping binding ta-ble. An untrusted message is a message received from outside the network, and an un-trusted interface is an interface configured to receive DHCP messages from outside thenetwork.The DHCP snooping basically permits all the trusted messages received from within thenetwork and filters untrusted messages. In case of untrusted messages, all the bindingentries are recorded in a DHCP snooping binding table. This table contains a hardwareaddress, IP address, lease time, VLAN ID, interface, etc. It also gives you a way to differ-entiate between untrusted interfaces connected to the end-user and trusted interfacesconnected to the DHCP server or another switch.9.7.2.1 Enabling DHCPv6 SnoopingDHCPv6 snooping should be enabled to allow clients to obtain IPv6 addresses from anauthorized DHCPv6 server. To enable the DHCPv6 snooping on the system, use the fol-lowing commandCommand Mode Descriptionipv6 dhcp snooping GlobalInterface[GE/XE/GPON]Enables the DHCPv6 snooping on the system.no ipv6 dhcp snooping Disables the DHCPv6 snooping on the system. (de-fault)To enable the DHCPv6 snooping on a VLAN, use the following commandCommand Mode Descriptionipv6 dhcp snooping vlan VLANSGlobalEnables the DHCPv6 snooping on a specific VLAN.no ipv6 dhcp snooping vlanVLANS Disables the DHCPv6 snooping on a specific VLAN.You must enable DHCPv6 snooping on the system before enabling DHCPv6 snooping on!
