Fujitsu Corporation

Hiromu Yoshi

Yoshiyuki Maeda

Hironori Kadota

Yumiko Ogata

Seiji Miyata

Yoko Toyozumi

Yoshiko Sakamoto

A frame forwarding apparatus comprises a receiving unit receiving a frame including a source address, a destination address and a VWAN identifier; a converting unit converting a VWAN identifier in the frame into one of degenerate VWAN identifiers that the number of adoptable values thereof is smaller than the number of VWAN identifiers; a storage unit containing at least one entry containing the source address in the frame, a degenerate VWAN identifier that a VWAN identifier in the frame is converted, and path information representing a path via which the frame is received; a retrieving unit retrieving, from said storage unit, an entry corresponding to the destination address in the frame and the degenerate VWAN identifier in the frame; a restoring unit restoring the degenerate VWAN identifier in the frame into the original VWAN identifier; and a transmitting unit transmitting the frame based on the path information in the entry retrieved.

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Fukuoka, Japan

Hiromu Yoshi