Patent ID: 6282169
Filing Date: 2001-08-28
Classification: H04L

Abstract:
A serial redundant bypass control system for maintaining network bandwidth management service, comprising:a first bandwidth management control module for performing bandwidth management control service on a network signal;a second bandwidth management control module for performing bandwidth management service on the network signal;a first bypass control module for transporting the network signal to and from the first bandwidth management control module and for bypassing the first bandwidth management control module upon failure of the first bandwidth management control module;a second bypass control module for transporting the network signal to and from the second bandwidth management control module and for bypassing the second bandwidth management control module upon failure of the second bandwidth management control module; anda first bypass connector line for transporting the network signal between the first and second bypass control modules;wherein the first bypass control module comprises:a first bypass switch mechanism;a second bypass switch mechanism; anda second bypass connector line for transporting the network signal between the first and second bypass switch mechanisms upon failure of the first bandwidth management control module; andwherein the first and second bypass switch mechanisms each comprise:a first, second and third bi-directional port for receiving and outputting the network signal;a bypass control signal input port for receiving a bypass control signal from the first bandwidth management control module;a first path connecting the first bi-directional port to the second bi-directional port;a second path connecting the first bi-directional port to the third bi-directional port; anda bypass switch for alternating between the first and second paths.