D-Link DGS-3630-52PC Quick installation Guide - Page 533

DGS-3630 Series Layer 3 Stackable Managed Switch Web UI Reference Guide Parameter Description 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 Data Glean 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. • Select DHCP to specify that addresses should be snooped in DHCPv6 packets. • Select NDP to specify that addresses should be snooped in NDP packets. • Select DHCP-PD to specify that the IPv6 prefix should be snooped in DHCPv6-PD 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. DHCP-PD snooping performs DHCPv6 snooping of Prefix Delegation (PD) to setup bindings between the Delegating Router (assigned with an IPv6 prefix) and the corresponding Requesting Router. The bindings can be used to validate the source prefix in the packets. Select to enable or disable the data-glean function here. In some circumstances (DAD-NS packet lost or Switch reboot), a valid IPv6 address cannot be found in the binding table for some devices and as a result traffic to and from these devices are denied by the IPv6 source guard. The data-glean function provides a method for the Switch to recover the lost IPv6 addresses using IPv6 Duplicate Address Detection (DAD). Enter the VLAN ID list used here. Click the Apply button to accept the changes made. Click the Edit button to re-configure the specific entry. Click the Delete button to remove the specified entry. IPv6 ND Inspection This window is used to display and configure the IPv6 ND inspection settings. 521