Allied Telesis AlliedWare Plus Operating System Version 5.4.4C (x310-26FT,x310-26FP,x310-50FT,x310-50FP) User Manual

Page 1740

DHCP for IPv6 (DHCPv6) Introduction and Configuration

Software Reference for x310 Series Switches

65.4

AlliedWare Plus

Operating System - Version 5.4.4C

C613-50046-01 REV A

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CONFIRM:
A DHCPv6 Client sends a CONFIRM message to any available DHCPv6 Server to
determine whether the IPv6 addresses it was assigned is still appropriate to the link to
which the DHCPv6 Client is connected. This can happen when the DHCPv6 Client
detects either a link-layer connectivity change, or if it is powered on and one or more
leases are still valid. The CONFIRM message is used to confirm whether the DHCPv6
Client is still on the same link or whether it has been moved. The actual lease(s) are
not validated; just the prefix portion of the delegated IPv6 addresses or IPv6 prefixes.

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RENEW:
A DHCPv6 Client sends a RENEW message to the DHCPv6 Server that originally
provided the DHCPv6 Client’s addresses and configuration parameters, to extend the
lifetimes on the IPv6 addresses assigned to the DHCPv6 Client and to update other
configuration parameters.

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REBIND:
A DHCPv6 Client sends a REBIND message to any available DHCPv6 Server to extend
the lifetimes of the IPv6 addresses assigned to the DHCPv6 Client, and to update
other configuration parameters. This message is sent after a DHCPv6 Client receives
no response to a RENEW message.

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REPLY:
A DHCPv6 Server sends a REPLY message containing assigned IPv6 addresses and
configuration parameters in response to a SOLICIT, REQUEST, RENEW, and REBIND
message received from a DHCPv6 Client. A DHCPv6 Server sends a REPLY message
containing configuration parameters in response to an INFORMATION-REQUEST
message. A DHCPv6 Server sends a REPLY message in response to a CONFIRM
message confirming or denying that the IPv6 addresses assigned to the DHCPv6
Client are appropriate to the link to which the DHCPv6 Client is connected. A DHCPv6
Server sends a REPLY message to acknowledge receipt of a RELEASE or DECLINE
message.

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RELEASE:
A DHCPv6 Client sends a RELEASE message to the DHCPv6 Server to inform it that the
DHCPv6 Client will no longer use one or more of the assigned IPv6 addresses.

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DECLINE:
A DHCPv6 Client sends a DECLINE message to a DHCPv6 Server to indicate that the
DHCPv6 Client has determined that one or more IPv6 addresses assigned by the
DHCPv6 Server are already in use on the link to which the DHCPv6 Client is
connected.

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RECONFIGURE:
A DHCPv6 Server sends a RECONFIGURE message to a DHCPv6 Client to inform the
DHCPv6 Client that the DHCPv6 Server has new or updated configuration parameters.
The DHCPv6 Client is to initiate a RENEW/REPLY or an INFORMATION-REQUEST/
REPLY transaction with the DHCPv6 Server to receive updated information.

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INFORMATION-REQUEST:
A DHCPv6 Client sends an INFORMATION-REQUEST message to a DHCPv6 Server to
request configuration parameters without the assignment of any IPv6 addresses to
the DHCPv6 Client.

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RELAY-FORW:
A DHCPv6 Relay Agent sends a RELAY-FORW message to relay messages to DHCPv6
Servers, either directly or through another DHCPv6 Relay Agent. The received
message, either a DHCPv6 Client message or a RELAY-FORW message from another
DHCPv6 Relay Agent, is encapsulated in an option in the RELAY-FORW message.