CN115189986A - Ring network redundancy backup method and system - Google Patents
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- CN115189986A CN115189986A CN202210618543.4A CN202210618543A CN115189986A CN 115189986 A CN115189986 A CN 115189986A CN 202210618543 A CN202210618543 A CN 202210618543A CN 115189986 A CN115189986 A CN 115189986A
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- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/42—Loop networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/42—Loop networks
- H04L12/437—Ring fault isolation or reconfiguration
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
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Abstract
The invention provides a method and a system for redundancy backup of a ring network, wherein the method comprises the following steps: constructing a ring network structure of the newly added network equipment and the backbone network equipment; a backbone network equipment port sends and receives a looped network message at regular time, and a group loop port of a newly added network equipment forwards the looped network message; after a group ring port of basic backbone network equipment receives a ring network message, analyzing the ring network message, judging the priority of the group ring port, and electing a master port and a slave port; blocking the slave port with low priority and continuously waiting for the ring network message sent by the master port; when the newly added network equipment fails, the group ring port of the basic backbone network equipment enters a forwarding state, and when the newly added network equipment recovers from the failure, the group ring port of the basic backbone network equipment enters a blocking state again. The scheme can be applied to the backbone network topology connected by the convergent link, realizes the loop protection of the newly added network and the backbone network, and can quickly start the backup link to ensure the reliability of the network when the network fails.
Description
Technical Field
The invention belongs to the field of communication, and particularly relates to a method and a system for redundancy backup of a ring network.
Background
The construction of the ethernet is performed in stages in steps under a large number of conditions, generally, a basic backbone network is firstly established, and then the basic backbone network is expanded, so that a large ethernet network is gradually constructed, and in order to ensure the reliability and stability of a new network, the effect of redundant backup with the basic backbone network in a ring network manner is inevitably realized. However, the backbone networks are often connected in a manner of link aggregation based on consideration of network bandwidth and reliable communication, which results in that a part of ring network protocols cannot be applied to a newly added network in such a scenario in order to achieve a redundant backup effect.
Disclosure of Invention
In view of this, embodiments of the present invention provide a method and a system for redundant backup of a ring network, which are used to solve the problem that redundant backup is difficult to implement in an existing backbone network connected in a converged link manner.
In a first aspect of an embodiment of the present invention, a method for backing up redundancy in a ring network is provided, including:
configuring a group ring port for each newly added network device and each basic backbone network device, wherein the newly added network devices are connected through the group ring ports, and the heads and the tails of the newly added network devices are connected to the group ring ports of the basic backbone network devices to form a ring network structure;
a group ring port of the basic backbone network equipment sends a ring network message at regular time, waits for receiving the ring network message, and forwards the ring network message by a group ring port of the newly added network equipment;
after receiving the ring network message, the group ring port of the basic backbone network equipment judges the priority of the group ring port by analyzing the ring network message and elects a master port and a slave port;
blocking the slave port with low priority and continuously waiting for the ring network message sent by the master port;
when the newly added network equipment fails, the group ring port of the basic backbone network equipment enters a forwarding state, and when the newly added network equipment recovers from the failure, the group ring port of the basic backbone network equipment enters a blocking state again.
In a second aspect of the embodiments of the present invention, a ring network redundancy backup system is provided, which at least includes a newly added network device, a basic backbone network device, a ring port of the newly added network device, and a ring port of the basic backbone network device;
the newly added network devices are connected through a ring port group, and the heads and the tails of the newly added network devices are connected to the ring port group of the basic backbone network device to form a ring network structure;
the group ring port of the basic backbone network equipment is used for sending a ring network message at regular time and waiting for receiving the ring network message, and the group ring port of the newly added network equipment is used for forwarding the ring network message;
after the group ring port of the basic backbone network equipment receives the ring network message, analyzing the ring network message, judging the priority of the group ring port, electing a master port and a slave port, blocking the slave port with low priority, and continuously waiting for the ring network message sent by the master port;
when the newly added network equipment fails, the ring port of the basic backbone network equipment enters a forwarding state, and when the newly added network equipment recovers from the failure, the ring port of the basic backbone network equipment enters a blocking state again.
The embodiment of the invention can be suitable for the backbone network connected by the convergent link, so that the newly added network equipment can be accessed in a ring redundancy mode, and the newly added network equipment can be randomly replaced and intervened in any ring without modifying the configuration, and the maintenance is simple. Meanwhile, the method is suitable for a complex network topology structure, and the self-healing time can reach millisecond level for network faults.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic flowchart of a ring network redundancy backup method according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a ring network structure according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a ring network redundancy backup system according to an embodiment of the present invention.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
It should be understood that the terms "comprises" and "comprising," when used in this specification or claims and in the accompanying drawings, are intended to cover a non-exclusive inclusion, such that a process, method or system, or apparatus that comprises a list of steps or elements is not limited to the listed steps or elements. In addition, "first" and "second" are used to distinguish different objects, and are not used to describe a specific order.
Referring to fig. 1, a schematic flow chart of a ring network redundancy backup method according to an embodiment of the present invention includes:
s101, configuring a group ring port for each newly added network device and each basic backbone network device, wherein the newly added network devices are connected through the group ring ports, and the heads and the tails of the newly added network devices are connected to the group ring ports of the basic backbone network devices to form a ring network structure;
the newly added network equipment is added on the backbone network and is used for realizing network communication and realizing redundant backup of the backbone network. The basic backbone network equipment is network equipment for connecting a plurality of areas or regions, and at least one backbone network equipment exists in each backbone network and is connected with other backbone networks. The ring-forming port is a port for forming a ring network and can be used for sending, forwarding or receiving messages.
The newly added network devices are connected by using the group ring ports, and then the heads and the tails of the newly added network devices are respectively connected to the group ring ports of the backbone devices to form a ring network structure with the backbone network.
S102, regularly sending a ring network message by a ring group port of basic backbone network equipment, waiting for receiving the ring network message, and forwarding the ring network message by a ring group port of newly added network equipment;
the ring network message is used for detecting the communication state between the network devices and judging whether the ring network state exists between the backbone network device and the newly added network device.
The ring port of the backbone network device can be used for sending ring network messages at regular time and receiving the returned ring network messages. And the group ring port of the newly added network equipment is used for forwarding the ring network message.
The ring network message at least carries the MAC address, the ring network state and the sending port number of the sending equipment.
S103, after the ring network message is received by the ring group port of the basic backbone network equipment, the ring network message is analyzed, the priority of the ring group port is judged, and a master port and a slave port are elected;
after receiving the ring network message, the ring network port of the basic backbone network equipment analyzes the ring network message, judges the priority of the ring network port connected with the backbone network, and takes the port with high priority as a master port and the port with low priority as a slave port. The priority of the ring port group can be judged according to the MAC address and the port number transferred by the ring network message.
Specifically, when the ring port of the basic backbone network device receives a ring network message, it is determined that the connection between the newly added network device and the basic backbone network device is in a ring network state, and the ring network message is analyzed.
It should be understood that the master/slave ports are ring ports of the group in which the newly added network device is connected to the backbone network.
S104, blocking the slave port with low priority, and continuously waiting for a ring network message sent by the master port;
when the group ring port of the basic backbone network equipment is a main port, the timer of the backbone network equipment is closed, and the ring network message is continuously sent.
The timer is used for judging whether the message receiving is overtime. After the backbone network device sends the ring network message, the receiving time of the ring network message needs to be accumulated to verify whether the message is overtime, and if the message is overtime, corresponding exception handling needs to be carried out.
When the group ring port of the backbone network equipment is the slave port, the port is converted into a blocking state and used as a backup link to continuously wait for the ring network message sent by the master port.
And S105, when the newly added network equipment fails, the ring group port of the basic backbone network equipment enters a forwarding state, and when the newly added network equipment recovers from the failure, the ring group port of the basic backbone network equipment enters a blocking state again.
Optionally, when the newly added network device recovers from the failure, the ring port group of the basic backbone network device performs election again according to the received ring network message, and elects the master port and the slave port.
Illustratively, as shown in fig. 2, the basic backbone network devices are defined as trunk nodes and are connected by aggregation links, and the aggregation links do not participate in the group ring. The newly added network equipment is defined as a branch node which is connected to the basic backbone network in a chain structure end to end.
In one embodiment, after the ring ports of the Trunk node group are connected, the Trunk node group waits for receiving the ring network message and sends the ring network message of the Trunk node group at regular time; the Branch node forwards the received ring network message; and the Trunk node group ring port receives the ring network message, judges the ring network message to be in a ring state, analyzes the ring network message and elects a master port and a slave port.
When the group ring port is a main port, entering a ring state, closing a self timer and continuously sending a ring network detection message; and when the group ring port is the slave port, the port is changed into a blocking state, and the ring network message sent by the master port is continuously waited.
In a ring state, when a Branch node link fails, the slave port is switched to a forwarding state, and a backup link is started. When the fault is recovered, the Trunk node combined port performs master-slave port election again according to the received ring network message, judges the master-slave port and converts the port into a message sending state or a blocking state.
It should be understood that in fig. 2, the newly added network device and the basic backbone network device may form a ring structure as shown in the figure, and in practice, the ring network structures are independent of each other. In any ring network, the ring network message starts from one ring port of the basic backbone network device and ends at the other ring port of the basic backbone network device, and the election of the master port and the slave port is also from the two ring ports, and the negotiation election is carried out according to the ring network message. For a ring network, the master/slave ports may be on one port of two basic backbone network devices, or on two ports of one basic backbone network.
In this embodiment, based on the loop access of the newly added network device, the ring network packet is sent through the backbone network, and the master and slave ports are elected according to the received packet, so that forwarding is performed through the backbone network port when a network failure occurs, and reliable communication from the newly added network to the backbone network is ensured. The method is not only suitable for backbone networks connected by convergence links, so that newly added network equipment is accessed in a ring network redundancy mode, but also can be replaced and intervened in any ring at will without modifying configuration, the maintenance is simple, and the self-healing time can reach millisecond level for a complex network topology structure.
It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.
Fig. 3 is a schematic structural diagram of a ring network redundancy backup system according to an embodiment of the present invention, where the system at least includes a new network device 310, a basic backbone network device 330, a ring group port 320 of the new network device, and a ring group port 340 of the basic backbone network device;
the newly added network devices are connected through a group ring port, and the heads and the tails of the newly added network devices are connected to the group ring port of the basic backbone network device to form a ring network structure;
the group ring port of the basic backbone network equipment is used for sending a ring network message at regular time and waiting for receiving the ring network message, and the group ring port of the newly added network equipment is used for forwarding the ring network message;
after receiving the ring network message, the ring group port of the basic backbone network equipment judges the priority of the ring group port by analyzing the ring network message, elects a master port and a slave port, blocks the slave port with low priority and continuously waits for the ring network message sent by the master port;
when the newly added network equipment fails, the ring port of the basic backbone network equipment enters a forwarding state, and when the newly added network equipment recovers from the failure, the ring port of the basic backbone network equipment enters a blocking state again.
The ring network message at least carries the MAC address, the ring network state and the sending port number of the sending equipment.
When the ring port of the basic backbone network device receives a ring network message, the connection between the newly added network device and the basic backbone network device is judged to be in a ring network state, and the ring network message is analyzed.
Optionally, when the group ring port of the basic backbone network device is the master port, the timer of the backbone network device itself is closed, and the ring network message is continuously sent.
Optionally, when the newly added network device recovers from the failure, the ring port of the basic backbone network device performs election again according to the received ring network message, and elects the master port and the slave port.
It should be understood that, in general, a ring network protocol operates in a network device, a ring group port is generated by configuration, a ring network algorithm determines that a ring network message is to be sent, forwarded and received from the ring group port, and the ring group port needs to be analyzed by the corresponding network device after receiving the message, and determines a state change of the ring group port through the ring network algorithm.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the above embodiments, the description of each embodiment has its own emphasis, and reference may be made to the related description of other embodiments for parts that are not described or recited in any embodiment.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A ring network redundancy backup method is characterized by comprising the following steps:
configuring a group ring port for each newly added network device and each basic backbone network device, wherein the newly added network devices are connected through the group ring ports, and the heads and the tails of the newly added network devices are connected to the group ring ports of the basic backbone network devices to form a ring network structure;
a group ring port of the basic backbone network equipment sends a ring network message at regular time, waits for receiving the ring network message, and forwards the ring network message by a group ring port of the newly added network equipment;
after receiving the ring network message, the group ring port of the basic backbone network equipment judges the priority of the group ring port by analyzing the ring network message and elects a master port and a slave port;
blocking the slave port with low priority and continuously waiting for the ring network message sent by the master port;
when the newly added network equipment fails, the group ring port of the basic backbone network equipment enters a forwarding state, and when the newly added network equipment recovers from the failure, the group ring port of the basic backbone network equipment enters a blocking state again.
2. The method according to claim 1, wherein the ring network packet at least carries the MAC address, ring network status and sending port number of the sending device.
3. The method of claim 1, wherein the periodically sending the ring network packet by the group ring port of the basic backbone network device and waiting to receive the ring network packet comprises:
when the group ring port of the basic backbone network device receives the ring network message, the connection between the newly added network device and the basic backbone network device is judged to be in a ring network state, and the ring network message is analyzed.
4. The method of claim 1, wherein the determining the priority of the group ring port by parsing the ring network packet and electing the master port and the slave port comprises:
and when the group ring port of the basic backbone network equipment is the main port, closing the timer of the backbone network equipment and continuously sending the ring network message.
5. The method of claim 1, wherein the entering the blocked state again at the group ring port of the basic backbone network device when the newly added network device fails to recover comprises:
when the newly added network equipment is recovered from the fault, the ring group port of the basic backbone network equipment is elected again according to the received ring network message, and the master port and the slave port are elected.
6. A ring network redundancy backup system is characterized by at least comprising newly added network equipment, basic backbone network equipment, a ring port of the newly added network equipment and a ring port of the basic backbone network equipment;
the newly added network devices are connected through a ring port group, and the heads and the tails of the newly added network devices are connected to the ring port group of the basic backbone network device to form a ring network structure;
the group ring port of the basic backbone network equipment is used for sending a ring network message at regular time and waiting for receiving the ring network message, and the group ring port of the newly added network equipment is used for forwarding the ring network message;
after receiving the ring network message, the ring group port of the basic backbone network equipment judges the priority of the ring group port by analyzing the ring network message, elects a master port and a slave port, blocks the slave port with low priority and continuously waits for the ring network message sent by the master port;
when the newly added network equipment fails, the group ring port of the basic backbone network equipment enters a forwarding state, and when the newly added network equipment recovers from the failure, the group ring port of the basic backbone network equipment enters a blocking state again.
7. The system according to claim 6, wherein said ring network packet at least carries MAC address, ring network status and sending port number of the sending device.
8. The system of claim 6, wherein when the ring port of the basic backbone network device receives a ring network message, it determines that the connection between the newly added network device and the basic backbone network device is in a ring network state, and parses the ring network message.
9. The system of claim 6, wherein said determining the priority of the group ring port by parsing the ring network packet and electing the master port and the slave port further comprises:
and when the group ring port of the basic backbone network equipment is the main port, closing the timer of the backbone network equipment and continuously sending the ring network message.
10. The system of claim 6, wherein the re-entering the blocking state by the group ring ports of the basic backbone network device after the failure recovery of the newly added network device comprises:
when the fault of the newly-added network equipment is recovered, the group ring port of the basic backbone network equipment is elected again according to the received ring network message, and the master port and the slave port are elected.
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