D-Link DGS-1250 User Manual - Page 213

IPv6 DGS-1250 Series Gigabit Ethernet Smart Managed Switch Web UI Reference Guide IPv6 Snooping This window is used to display and configure the IPv6 snooping settings. To view the following window, click Security > IMPB > IPv6 > IPv6 Snooping, as shown below: Figure 9-42 IPv6 Snooping Window The fields that can be configured in Station Move Setting are described below: Parameter Station Move Description Select the station move options here. Options to choose from are Permit and Deny. Click the Apply button to accept the changes made. The fields that can be configured in IPv6 Snooping Policy Settings are described below: Parameter Policy Name Limit Address Count Protocol VID List Description Enter the IPv6 snooping policy name used here. This name can be up to 32 characters long. Enter the address count limit value used here. This value must be between 0 and 511. Tick the No Limit option to disable this option. Select the protocol state here. Options to choose from are Enabled and Disabled. • DHCP - Specifies that addresses should be snooped in DHCPv6 packets. • NDP - Specifies that addresses should be snooped in NDP packets. DHCPv6 snooping sniffs the DHCPv6 packets sent between the DHCPv6 client and server in the address assigning procedure. When a DHCPv6 client successfully got a valid IPv6 address, DHCPv6 snooping creates its binding database. ND Snooping is designed for a stateless auto-configuration assigned IPv6 address and manually configured IPv6 address. Before assigning an IPv6 address, the host must perform Duplicate Address Detection first. ND snooping detects DAD messages (DAD Neighbor Solicitation (NS) and DAD Neighbor Advertisement (NA)) to build its binding database. The NDP packet (NS and NA) is also used to detect whether a host is still reachable and determine whether to delete a binding or not. Enter the VLAN ID list used here. Click the Apply button to accept the changes made. 204