Dell PowerConnect M6220 User's Guide - Page 571
DHCPv6, Reachable, Stale, Delay, Probe, Last Updated, IPv6 Neighbor Table, Interface
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- Reachable - Positive confirmation was received within the last Reachable Time milliseconds that the forward path to the neighbor was functioning properly. While in REACH state, the device takes no special action as packets are sent. - Stale - More than ReachableTime milliseconds have elapsed since the last positive confirmation was received that the forward path was functioning properly. While in STALE state, the device takes no action until a packet is sent. - Delay - More than ReachableTime milliseconds have elapsed since the last positive confirmation was received that the forward path was functioning properly. A packet was sent within the last DELAY_FIRST_PROBE_TIME seconds. If no reachability confirmation is received within DELAY_FIRST_PROBE_TIME seconds of entering the DELAY state, send a neighbor solicitation message and change the state to PROBE. - Probe - A reachability confirmation is actively sought by resending neighbor solicitation messages every RetransTimer milliseconds until a reachability confirmation is received. • Last Updated - Time since the address was confirmed to be reachable. Displaying IPv6 Neighbor Table 1. Open the IPv6 Neighbor Table page. 2. Select the interface to be displayed from the Interface drop-down menu. Neighbor details for the selected interface display. Displaying IPv6 Neighbor Table using the CLI Command For information about the CLI commands that perform this function, see the following chapter in the CLI Reference Guide: • IPv6 Routing Commands DHCPv6 DHCP is generally used between clients (for example hosts) and servers (for example routers) for the purpose of assigning IP addresses, gateways, and other networking definitions such as DNS, NTP, and/or Session Initiation Protocol (SIP) parameters. However, IPv6 natively provides for auto configuration of IP addresses through IPv6 Neighbor Discovery Protocol (NDP) and the use of Router Advertisement messages. Thus, the role of DHCPv6 within the network is different than that of DHCPv4 in that it is less relied upon for IP address assignment. There is a list of DHCP options that is commonly supported by DHCPv4 that need to be supported also by DHCPv6, and must be configured. Note: The most important DHCP option to configure is the DNS Server option, which is configured on the IPv6 → DHCPv6 →Pool Configuration web page. Configuring IPv6 569