Patent ID: 8630285

Claim:
A method for transmitting an Internet Protocol version 6 (IPv6) message in a Passive Optical Network (PON), comprising: receiving, by an Optical Line Terminal (OLT), a Router Advertisement (RA) message carrying OLT port information, Optical Network Unit (ONU) port information, and an IPv6 address prefix; binding, by the OLT, the IPv6 address prefix with an OLT port indicated by the OLT port information; sending, by the OLT, the RA message to an ONU through the OLT port, so that the ONU binds the IPv6 address prefix with an ONU port indicated by the ONU port information; and further comprising one of the following: receiving a Router Solicitation (RS) message that is sent by the ONU and comprises the ONU port information, adding OLT port information to the RS message, and sending the RS message that comprises the ONU port information and the OLT port information to a network entity to request the network entity to allocate an IPv6 address prefix for a user terminal; and receiving an RS message that is sent by the ONU and comprises the OLT port information and the ONU port information, and forwarding the RS message to the network entity to request the network entity to allocate an IPv6 address prefix for the user terminal.