COMMUNICATION SYSTEM AND PROCESSING METHOD THEREFOR
First Claim
1. A communication system comprising:
- a redundancy network including first and second switch apparatuses each having a first port, a second port, and a third port, the first ports of the first and second switch apparatuses being connected to each other through a shared communication link and the second ports of the first and second switch apparatuses being connected to each other via at least one switch apparatus; and
a third switch apparatus connected with the third ports of the first and second switch apparatuses through corresponding communication links to operate with link aggregation being set for the communication links,wherein, when a failure occurs in communication between the first ports of the first and second switch apparatuses, the redundancy network causes an actual data signal to be transmitted between the second ports of the first and second switch apparatuses in accordance with an arbitrary redundancy protocol, andwhen a failure occurs in communication between the first ports of the first and second switch apparatuses, the first switch apparatus performs control to put the third port of the first switch apparatus into a blocking state in which the actual data signal is blocked.
1 Assignment
0 Petitions
Accused Products
Abstract
A communication system includes a redundancy network, which includes first and second switch apparatuses and employs a ring protocol or the like, and third switch apparatuses. The first and second switch apparatuses function logically as a signal switch apparatus (MLAG). Each third switch apparatus operates with link aggregation (LAG) being set between the third switch apparatus and the first and second switch apparatuses. When a failure occurs in communication between redundant ports of the first and second switch apparatuses, a fourth switch apparatus supporting the ring protocol performs control to put master and slave ports thereof into an open state and the second switch apparatus performs control to put user ports thereof into a blocking state.
10 Citations
8 Claims
-
1. A communication system comprising:
-
a redundancy network including first and second switch apparatuses each having a first port, a second port, and a third port, the first ports of the first and second switch apparatuses being connected to each other through a shared communication link and the second ports of the first and second switch apparatuses being connected to each other via at least one switch apparatus; and a third switch apparatus connected with the third ports of the first and second switch apparatuses through corresponding communication links to operate with link aggregation being set for the communication links, wherein, when a failure occurs in communication between the first ports of the first and second switch apparatuses, the redundancy network causes an actual data signal to be transmitted between the second ports of the first and second switch apparatuses in accordance with an arbitrary redundancy protocol, and when a failure occurs in communication between the first ports of the first and second switch apparatuses, the first switch apparatus performs control to put the third port of the first switch apparatus into a blocking state in which the actual data signal is blocked. - View Dependent Claims (2, 3, 4, 5, 6)
-
-
7. A processing method for a communication system having
a redundancy network including first and second switch apparatuses each having a first port, a second port, and a third port, the first ports of the first and second switch apparatuses being connected to each other through a shared communication link and the second ports of the first and second switch apparatuses being connected to each other via at least one switch apparatus, and a third switch apparatus connected with the third ports of the first and second switch apparatuses through corresponding communication links to operate with link aggregation being set for the communication links, the processing method comprising: causing, when a failure occurs in communication between the first ports of the first and second switch apparatuses, the communication system to transmit an actual data signal between the second ports of the first and second switch apparatuses in accordance with an arbitrary redundancy protocol and to perform control to put the third port of the first switch apparatus into a blocking state in which the actual data signal is blocked. - View Dependent Claims (8)
Specification