Method for transferring alarm of client access link in transmission system
A technology of access link and transmission system, which is applied in the transmission system to realize the field of customer access link alarm transmission, which can solve the problem of no alarm transmission and other problems
Active Publication Date: 2012-01-04
FENGHUO COMM SCI & TECH CO LTD
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Problems solved by technology
In the transmission equipment, the interface with the data equipment is the Ethernet interface single board. The Ethernet interface single board can detect the alarm status of the access link, but there is no mechanism to transmit the alarm of the access link of the A end to the B end.
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[0045]After the Ethernet interface board at site A detects an alarm on the Ethernet access link A_W, it inserts a CSF frame into the GFP flow of the corresponding virtual concatenation member group. The interface board sends a frame of CSF every 10ms. After the A_W alarm on the Ethernet link disappears, the Ethernet interface board at site A no longer inserts CSF frames. In the receiving direction of station B, when the Ethernet interface board of station B detects a CSF frame every 10ms for 3 consecutive times, the corresponding Ethernet link B_W is shut down, so that the connected data device B detects the Ethernet access link An alarm for the route B_W, and a switchover occurs. When the Ethernet interface board at site B does not receive a CSF frame for 30 ms in a row, the Ethernet link B_W is turned on, the alarm on B_W disappears, and data device B returns to work on the active link B_W. At the same time, when N_W fails, when the receiving direction of station B detects...
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The invention relates to a method for transferring the alarm of a client access link in a transmission system, which is characterized in that data equipment A is connected with transmission equipment A through active / standby links A_W and A_P, and data equipment B is connected with transmission equipment B through active / standby links B_W and B_P; when the active link A_W fails, the service of A site is switched to the standby link A_P from the active link A_W, and alarm information is sent; the transmission equipment A sends a client management frame CSF of GFP at regular time, and the client management frame is transferred to the transmission equipment B through an SDH channel N_W; the transmission equipment B turns off the active link B_W so as to enable the service to be switched to the standby link B_P from the active link B_W of the data equipment B, thereby ensuring that A site and B site work on the standby link. The method transfers the alarm of an Ethernet access link of thedata equipment A to the data equipment B through a client management frame CSF of GFP, thereby enabling the switching of the transmission equipment at both ends to be synergistically completed, and therefore, the normal communication of the service is ensured.
Description
technical field [0001] The present invention relates to a scenario where a transmission system bears Ethernet services, in particular to a method for realizing client access link alarm delivery in the transmission system. Background technique [0002] With the rapid development of IP services, the demand for transmission of various services such as voice and video has led to the rapid popularization of broadband technologies for user access and premise networks, and has also promoted the large-scale construction of transmission backbone networks. Due to the tremendous changes in business requirements, SDH (Synchronous Digital Hierarchy), which originally aimed to carry voice, has gradually evolved into a multi-service transmission platform - MSTP. MSTP can bear the weight of TDM, Ethernet, ATM and other services to meet the diverse needs of users. [0003] In order to realize the transmission of Ethernet on MSTP, it is necessary to adapt the Ethernet signal into the virtual...
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IPC IPC(8): H04L12/26H04L12/24H04L1/22H04L29/06
Inventor 江榕刘怀明徐剑辉
Owner FENGHUO COMM SCI & TECH CO LTD