Patent ID: 7872992
Filing Date: 2011-01-18
Classification: H04L

Abstract:
1. A relay device with a blocking port that is logically blocked, which is one of a plurality of relay devices each including a plurality of ports and having a spanning tree protocol applied therein, the relay device comprising: request passing means for judging whether a received data frame is request data transmitted from a terminal device requesting a predetermined bandwidth prior to transmitting a data frame requiring the predetermined bandwidth and specifying a detour path that uses the blocking port, and when judged affirmatively, passing the request data through the blocking port without discarding the request data; identification information storage means for acquiring identification information from the request data and storing therein the acquired identification information while the request passing means is passing the request data through the blocking port, the identification information being used for identifying specific data; and specific data passing means for allowing data identified as the specific data by the identification information to pass through the blocking port by unblocking the blocking port.