D-Link DGS-6600-48TS Configuration Guide - Page 512
Restrictions, Rapid Commit, Address Information Refresh, Table 51-4, Route, Next Hop
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Volume 9-Network Application / Chapter 51-DHCPv6 Client Configuration Chapter Overview In the example, each interface will assign a new IP address, and N+1 routing entries will be added into routing table. The following table shows a simple instance of adding entries: Table 51-4 Route Next Hop Type 3FFE:FFFF:0::/48 3FFE:FFFF:0:1::/64 ... 3FFE:FFFF:0:N::/64 interface 1 Interface 2 ... interface N Local Local ... Local Restrictions If the delegated prefix's prefix-length is greater than the sub-prefix's prefix-length (which is the interface prefix length of the configuration), the address and prefix will not be set. For example, DHCPv6 client delegated prefix 3ffe:1:2:3:/64, and interface configured sub-prefix is ::1:1:1:1:1/48. The interface will not be add a new address for the DHCPv6 delegated prefix, since a64 is greater than 48. Rapid Commit The DHCPv6 client can obtain configuration parameters from a server; either through a rapid twomessage exchange (solicit, reply) or through a normal four-message exchange (solicit, advertise, request, reply). By default, the four-message exchange is used. When the rapid-commit option is enabled by both the client and server, the two -message exchange is used instead of the fourmessage exchange. The diagram below shows use of the ipv6 dhcp client pd prefix-name rapid commit to enable prefix request with rapid-commit option. Address Information Refresh An IA_NA or IA_PD has no explicit "lifetime" or "lease length" of its own. When the valid lease lengths of all the addresses in an IA_NA or IA_PD have expired, the IA_NA or IA_PD can be considered to have expired. T1 and T2 are included to give servers explicit control over when a client recontacts the server about a specific IA_NA or IA_PD. In a message sent by a client to a server, values in the T1 and T2 fields indicate the client's preference for those parameters. The client sets T1 and T2 to 0 if it has no preference for those values. In a message sent by a server to a client, the client uses the values in the T1 and T2 fields DGS-6600 Configuration Guide 512