Patent ID: 7974282
Filing Date: 2011-07-05
Classification: H04L,Y02D

Abstract:
1. A data transfer apparatus coupled to a network, comprising a plurality of interfaces for transmitting and receiving data, wherein the data transfer apparatus is configured to: create transfer destination information for correlating a destination of the data with the interfaces for transmitting the data to be transmitted to the destination; hold the created transfer destination information; transmit, upon reception of multicast data via one of the interfaces before being judged that the transfer destination information has been created, the multicast data from at least one of the interfaces irrespective of the transfer destination information; and transmit, upon reception of the multicast data via the one of the interfaces after being judged that the transfer destination information has been created, the received data from the interfaces correlated with the destination of the received data by the transfer destination information, wherein a status of the data transfer apparatus is one of a standby status in which data is not transferred, an active status in which data is transferred, and a transient status which is a status during a transition from the standby status to the active status, the data transfer apparatus is further configured to start the creation of the transfer destination information after the status of the data transfer apparatus has changed from the standby status to the transient status, and the status of the data transfer apparatus changes from the transient status to the active status after being judged that the transfer destination information has been created.