23.1.2 Supported DHCP Optional

1

Client Identifier

Client Identifier option is used to carry OOA# that identifies the client between the client and server.

#

2

Server Identifier

The Server Identifier option is used to carry a DUID identifying a server between a client and a server.

OK

3

Identity Association option

The Identity Association (IA) option is used to carry an identity association, the parameters associated with the IA, and the addresses associated with the IA.

-

4

Identity Association for Temporary Addresses option

The Identity Association for Temporary Addresses (IA_TA) option is used to carry an IA, the parameters associated with the IA, and the addresses associated with the IA. As defined in RFC 3041, all the addresses in this option are used by clients as temporary addresses.

-

5

IA Address option

The IA Address option is used to specify IPv6 addresses associated with an IA. The IA Address option must be encapsulated in the Options field of the Identity Association option. The Options field encapsulates the options that are specific to this address.

-

6

Option Request

The Option Request option is used to identify a list of options in a message between a client and a server.

OK

7

Preference

The Preference option is sent by a server to a client to affect the selection of a server by the client.

OK

8

Elapsed Time option

A client must include the Elapsed Time option in messages to indicate how long the client has been trying to complete an IPv6 DHCP message exchange. The elapsed time is measured from the time at which the client sent the first message in the message exchange, and the elapsed-time field of the first message in the message exchange is set to 0. For example, the Elapsed Time option allows a secondary IPv6 DHCP server to respond to a request when a primary server has not answered in a reasonable time.

-

9

Relay Message option

The Relay Message option carries an IPv6 DHCP message in a relay-forward or relay-reply message.

OK

11

Authentication option

The Authentication option carries authentication information to authenticate the identity and contents of IPv6 DHCP messages.

-

12

Server unicast option

The server sends this option to a client to indicate to the client that it is allowed to send unicast messages to the server.

-

13

Status Code

This option returns a status indication related to the IPv6 DHCP message or option in which it appears.

OK

14

Rapid Commit

The Rapid Commit option is used to signal the use of two message exchanges for address assignment.

OK

15

User Class option

The User Class option is used by a client to identify the type or category of user or applications it represents.

-

16

Vendor Class Option

This option is used by a client to identify the vendor that manufactured the hardware on which the client is running. The information contained in the data area of this option is contained in one or more opaque fields that identify details of the hardware configuration.

-

17

Vendor-specific Information option

This option is used by clients and servers to exchange vendor-specific information.

-

18

Interface-Id Option

The relay agent may send the Interface-Id option to identify the interface on which the client message was received. If a relay agent receives a relay-reply message with an Interface-Id option, the relay agent relays the message to the client through the interface identified by the option.

-

19

Reconfigure Message option

A server includes the Reconfigure Message option in a reconfigure message to indicate to the client whether the client is to respond with a renew message or an information-request message.

-

20

Reconfigure Nonce option

If a server uses the Reconfigure Nonce option to provide security for reconfigure messages, the server maintains a value of nonce for each client.

The server initially informs the client of the nonce value and then includes the nonce value in any reconfigure messages sent to the client.

-

21

SIP Servers Domain Name List

The domain names of the SIP outbound proxy servers that the client is to use.

*

22

SIP Servers IPv6 Address List

This option specifies a list of IPv6 addresses indicating SIP outbound proxy servers available to the client.

*

23

DNS Recursive Name Server

This option is specified when a server passes a list of DNS server addresses to a client.

*

24

Domain Search List

When a client receives this option, it searches the given domain list whenever it resolves host names by using DNS. This option must not be used for any purposes other than host name resolution.

*

25

Identify Association for Prefix Delegation Option

This option is used to carry a prefix delegation identity association, the parameters associated with IA_PD, and the prefixes associated with it.

*

26

IA_PD Prefix Option

This option is used to specify IPv6 address prefixes associated with IA_PD.

*

31

Network Time Protocol (NTP) Servers

This option is used by a server to notify a client of a list of NTP server addresses.

*