| 摘要 |
PROBLEM TO BE SOLVED: To detect multiple fault occurrences and continue communication without increasing the number of passing repeaters of a supervisory frame even when faults occur respectively in a shared link portion and a non-shared link portion on a ring which monitors a shared link in a multi-ring structure. SOLUTION: In a communication network containing a repeater, a monitoring device and a shared link terminal device, when a link fault is detected, each device sends a fault detection frame into a ring upon fault occurrence, and delivers link fault information to shared link terminal devices 1102, 1108. The shared link terminal devices 1102, 1108 produce a link fault information management database, and determine the presence of multiple faults. When it is determined that there are multiple faults, sending complementary monitoring frames 1113, 1114 is stopped. COPYRIGHT: (C)2009,JPO&INPIT
|
