Ring network protection switching method based on role switching
A protection switching and ring network technology, applied in the field of the Ethernet ring network, can solve the problems of switching ports and re-refreshing addresses, and achieve the effect of improving work efficiency and reducing the recovery and self-healing time.
Active Publication Date: 2021-08-20
NANJING COLLEGE OF INFORMATION TECH
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[0004] The purpose of the present invention is to provide a ring network protection switching method based on role switching, to solve the shortcomings of still needing to switch ports and refresh addresses again when recovering from a fault
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[0025] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.
[0026] like Figure 1-Figure 6 As shown, a ring network protection switching method based on role switching is disclosed. The present invention adopts the following implementation steps:
[0027] (1) Before the ring network is enabled, select a node as the master node. There are two ports on the master node connected to the ring network, one of which is set as the master port, and the other port is set as the slave port and is set to the blocked state; All other nodes on the ring network are set as slave nodes, and the two ports connected to the ring network are set to forwarding state; at the same time, the service data transmission VLAN and the protection control message transmission VLAN of the ring network are set on each node, and The two VL...
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The invention discloses a ring network protection switching method based on role switching, which comprises the following steps of: selecting one node as a master node and the other nodes as slave nodes; wherein one end of the master node is set as a master port, and the other end of the master node is set as a slave port and is set in a blocked state; meanwhile, setting a service data transmission VLAN and a protection control message transmission VLAN of the looped network on each node; when a link physical fault occurs between the two slave nodes, a new master node is selected; the original master node receives the NEW-MASTER message, sets the role as a slave node and sends an NEW-MASTER-CON message with a flag bit to the new master node, and all functions of the master node are started; and when the new master node receives the Health message from the port, if the sending sequence number is consistent with the receiving sequence number, the new master node sends an RINK-UP-NO-FLUS message to inform other nodes of the looped network, the link is recovered to be normal, and the slave node sets the fault state as a normal state and sets the state of all ports as a forwarding state without address refreshing operation.
Description
technical field [0001] The invention relates to a ring network protection switching method based on role conversion, and belongs to the technical field of the Ethernet ring network. Background technique [0002] In order to ensure the communication reliability of the data network, it is often necessary to use the backup link to replace the failed link. At present, this function has been widely used, and the most common form is the ring network topology. EAPS is a link layer protocol for Ethernet loop protection. It can prevent the broadcast storm caused by the data ring when the Ethernet ring is complete, and when a link on the Ethernet ring is disconnected, it can quickly restore the communication path between the nodes on the ring network, and when the disconnected link is restored The link state before the failure can be restored by switching. [0003] The master node of EAPS blocks its secondary port to ensure the smooth flow of the ring network link and prevent the li...
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IPC IPC(8): H04L12/24
CPCH04L41/0668
Inventor 陈伟侯倩徐开军
Owner NANJING COLLEGE OF INFORMATION TECH