Hitachi, Ltd.

Hitachi Computer Engineering Co., Ltd.

Takunori Yoneno

Shigeki Morimoto

Toshihiko Murakami

Norihide Noyama

Shinya Ichinohe

Masashi Fukuda

Hirpyuki Sakoda

Hideyuki Matsuo

In an internetwork apparatus for interconnecting a plurality of networks having a route calculating module for calculating routes and a management module for managing a whole operation of the internetwork apparatus, the management module substitutes for route calculation in place of the route calculating module, when a fault occurs in the route calculating module, and packets are repeated in accordance with route calculation results made by the management module.

Internetwork route calculation execution method and apparatus

A multiprocessor bridge construction allows ports that are operable under a spanning tree protocol to coexist with ports that are inoperable under the spanning tree protocol, thus making it possible to improve the frame-repeating capability of the bridge, to equip the bridge with a large number of ports, and to divide the spanning tree topology into a plurality of portions to be managed.

Multiprocessor bridge having storage for spanning tree operation mode

Growing community of inventors

Yokohama, Japan

Takunori Yoneno