Network apparatus for redundant multicast

Details Network apparatus for redundant multicast Network apparatus for redundant multicast

2011-07-05

2011-07-05

Ahmed, Salman (Department: 2476)

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

C370S392000, C370S395710, C370S428000

Reexamination Certificate

active

07974282

ABSTRACT:
For continuing multicast data transfer according to path control information after being switched from an active status to a standby status, it is necessary that the standby status hold the same path control information as the active status. However, a synchronization of the path control information thereof is not guaranteed. To solve the above-mentioned problem, this invention provides a data transfer apparatus coupled to a network, including a plurality of interfaces for transmitting and receiving data, in which 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; and 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.

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