US 2010/0135154 A1 · METHOD AND SYSTEM FOR PROTECTION SWITCHING IN ETHERNET RING

Abstract

A method and system for protection switching in Ethernet rings are disclosed. The method for protection switching in Ethernet rings includes: receiving a server signal fail (SSF), an Ethernet lower layer fault signal, a remote defect indication (RDI) for informing a different port about a fault state when a uni-directional fault is generated, and ring-automatic protection switching (R-APS) information for requesting Ethernet ring protection switching; comparing the SSF, the RDI, and the R-APS information, and setting states of the first and second Ethernet rings; determining a protection switching priority level of each of the first and second Ethernet rings according to the states of the first and second Ethernet rings; and performing protection switching on the first and second Ethernet rings according to their protection switching priority levels.

Claims17

Dependent claims

A system for protection switching in Ethernet rings, the system comprising:

a first Ethernet ring protection controller configured to output state information of a first Ethernet ring including first and second port management units and perform a protection switching function according to a protection switching priority level of an Ethernet ring;
a second Ethernet ring protection controller configured to output state information of a second Ethernet ring including second and third port management units and perform a protection switching function according to a protection switching priority level of an Ethernet ring;
and
an Ethernet ring priority level determining unit configured to receive the state information of each Ethernet ring from the first and second Ethernet ring protection controllers, determine a protection switching priority level of each Ethernet ring according to the state information of each Ethernet ring, and transmit the determined protection switching priority level of each Ethernet ring to the first and second Ethernet ring protection controller.

1 more element

A method for protection switching in Ethernet rings in a system including first and second Ethernet ring protection controllers including local ports respectively connected to local links of first and second Ethernet rings and shared ports respectively connected to shared links of the first and second Ethernet rings, the method comprising:

receiving a server signal fail (SSF), an Ethernet lower layer fault signal, a remote defect indication (RDI) for informing a different port about a fault state when a uni-directional fault is generated, and ring-automatic protection switching (R-APS) information for requesting Ethernet ring protection switching;
comparing the SSF, the RDI, and the R-APS information, and setting states of the first and second Ethernet rings;
determining a protection switching priority level of each of the first and second Ethernet rings according to the states of the first and second Ethernet rings;
and
performing protection switching on the first and second Ethernet rings according to their protection switching priority levels.

2 more elements

Dependencies are inferred from the claim text.

Method and system for protection switching in ethernet ring

Life of this patent

Method and system for protection switching in ethernet ring

Life of this patent

Abstract

Claims17