CN107104870B - Switch capable of realizing multiple network redundancy settings - Google Patents
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- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/22—Alternate routing
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- H—ELECTRICITY
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Abstract
The invention discloses a switch capable of realizing multiple network redundancy settings, which comprises: the device comprises a networking mode selection module, a storage module, a networking detection module and a processing module. The switch provided by the invention can realize various network redundancy settings, including single ring, intersected ring, chained self-healing ring and double-healing self-healing ring, has rich functions, is easy to establish a complex network, and has high reliability of redundancy backup protection on switch service; in addition, when the switch carries out redundancy backup protection, the root switch directly executes service recovery without time-consuming root searching, meanwhile, the service recovery is that the root switch opens a blocking port, no intermediate link exists, the self-healing efficiency of the network is high, and the safety redundancy protection of the switch service can be effectively improved.
Description
Technical Field
The invention relates to the technical field of industrial switches, in particular to a switch capable of realizing multiple network redundancy settings.
Background
In order to maintain the stability of the network, in a network environment formed by a plurality of switches, backup connections, also referred to as backup links or redundant links, are generally used to improve the robustness and stability of the network.
The existing industrial ring network switch has monotonous function in the aspect of redundancy backup protection, cannot perform complex networking, and has the reliability of redundancy protection which is difficult to meet the requirement; and most of the existing industrial ring network switches adopt spanning tree protocols, so that the time for selecting the root is long, the cost for calculating the path is high, and the self-healing efficiency of the network is low.
Disclosure of Invention
In order to solve the problems in the prior art, embodiments of the present invention provide a switch capable of implementing multiple network redundancy settings. The technical scheme is as follows:
in one aspect, an embodiment of the present invention provides a switch capable of implementing multiple network redundancy settings, including:
a networking mode selection module, configured to determine a networking mode of the switch according to a selection of a user, where the networking mode includes: single ring, intersecting ring, chain self-healing ring, double-return self-healing ring;
a storage module, configured to store a network protocol corresponding to a networking mode, where the network protocol includes: a single ring protocol, an intersecting ring protocol, a chained self-healing ring protocol, and a dual-homing self-healing ring protocol;
the networking detection module is used for detecting whether the network corresponding to the networking mode selected by the user works normally or not;
and the processing module is used for providing corresponding redundancy backup protection for the switch when the network normally works according to the network protocol corresponding to the networking mode.
In the switch according to the embodiment of the present invention, the chain self-healing ring includes: at least one single strand and one single strand, each single strand comprising: at least two switches in series, a single ring comprising: at least three switches are connected in sequence, and the switches at two ends of each single chain are respectively connected with any two different switches in the single ring.
In the switch according to the embodiment of the present invention, when the user selects the networking mode of the chain self-healing ring,
networking detection module still is used for sending first detection data package to the switch that links to each other in the chain self-healing ring, first detection data package includes: first detection data information and respective MAC address information;
the networking detection module is further configured to receive a new first detection data packet sent by the connected switch, where the new first detection data packet includes: new first detection information and MAC information of a connected switch, wherein the new first detection information is obtained by analyzing a received first detection data packet by the connected switch;
the networking detection module is further used for analyzing the received new first detection data packet through a preset chain self-healing ring protocol to obtain new first detection information;
and the networking detection module is also used for judging the normal work of the chain type self-healing ring when the new first detection data information obtained by analysis is the same as the first detection data information sent by the networking detection module.
In the switch according to the embodiment of the present invention, the processing module is further configured to configure a port of the switch to a blocking state when it is determined that the chained self-healing ring is working normally;
the processing module is further configured to configure the port of the switch to an open state when the switch cannot receive the first detection data information that is the same as the first detection data information sent by the switch.
In the switch according to the embodiment of the present invention, the blocking state is that the switch port does not receive or forward the communication data, but receives or forwards the first detection packet;
the opening state is that the switch port receives and forwards the first detection data packet and the communication data.
In the switch according to the embodiment of the present invention, the dual-homing self-healing ring includes: the system comprises at least one switch and a plurality of connected or tangent single rings, wherein two ring network ports of the switch are respectively connected with one or two different switches in any single ring, and the single ring is formed by connecting at least three switches in series.
In the switch according to the embodiment of the present invention, when the user selects the networking mode of the dual-homing self-healing ring,
the networking detection module is also used for sending a second detection data packet to the switch connected in the dual-return self-healing ring, and the second detection data packet comprises: second detection data information and respective MAC address information;
the networking detection module is further configured to receive a new second detection data packet sent by the connected switch, where the new second detection data packet includes: new second detection information and MAC information of the connected switch, wherein the new second detection information is obtained by analyzing the received second detection data packet by the connected switch;
the networking detection module is further used for analyzing the received new second detection data packet through a preset dual-homing self-healing ring protocol to obtain new second detection information;
and the networking detection module is also used for judging that the dual-return self-healing ring protocol works normally when the new second detection data information obtained by analysis is the same as the second detection data information sent by the networking detection module.
In the switch according to the embodiment of the present invention, the processing module is further configured to configure a port of the switch to a blocking state when it is determined that the dual-homing self-healing ring is working normally;
the processing module is further configured to configure the port of the switch to an open state when the switch cannot receive second detection data information that is the same as the second detection data information sent by the switch.
In the switch according to the embodiment of the present invention, the blocking state is that the switch port does not receive or forward the communication data, but receives or forwards the second detection packet;
and the opening state is that the switch port receives and forwards the second detection data packet and the communication data.
In the switch according to the above embodiment of the present invention, the single ring is formed by connecting at least three switches in series, and the intersecting ring includes a plurality of connected single rings.
The technical scheme provided by the embodiment of the invention has the following beneficial effects:
the switch provided by the embodiment of the invention can realize various network redundancy settings, including single ring, intersected ring, chained self-healing ring and double-return self-healing ring, has rich functions, is easy to establish a complex network, and has high reliability of the redundancy backup protection of the switch service; in addition, when the switch carries out redundancy backup protection, the root switch directly executes service recovery without time-consuming root searching, meanwhile, the service recovery is that the root switch opens a blocking port, no intermediate link exists, the self-healing efficiency of the network is high, and the safety redundancy protection of the switch service can be effectively improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a switch capable of implementing multiple network redundancy settings according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a chain self-healing ring according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a dual-homing self-healing ring according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a single loop according to an embodiment of the present invention;
fig. 5 is a schematic diagram of an intersecting ring according to an embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Example one
An embodiment of the present invention provides a switch capable of implementing multiple network redundancy settings, and referring to fig. 1, the switch may include:
a networking mode selection module 100, configured to determine a networking mode of the switch according to a selection of a user, where the networking mode includes: single ring, intersecting ring, chain self-healing ring, dual-return self-healing ring.
A storage module 200, configured to store a network protocol corresponding to a networking mode, where the network protocol includes: a single ring protocol, an intersecting ring protocol, a chained self-healing ring protocol, and a dual homing self-healing ring protocol.
The networking detection module 300 is configured to detect whether a network corresponding to the networking mode selected by the user normally operates.
The processing module 400 is configured to provide corresponding redundant backup protection for the switch when the network normally works according to the network protocol corresponding to the networking mode.
In this embodiment, the switch may implement a variety of network redundancy settings, including: the system comprises a single ring, an intersecting ring, a chain self-healing ring and a double-return self-healing ring, has various and flexible networking modes, can easily establish a complex network, ensures the service protection function and improves the networking reliability.
Alternatively, referring to fig. 4 and 5, a single ring is made up of at least three switches connected in series, and the intersecting ring includes a plurality of connected single rings.
It should be noted that, it is a common form to implement redundancy backup protection by using a networking mode of a single ring and an intersecting ring, and not described here.
Optionally, referring to fig. 2, the chain self-healing ring includes: at least one single strand and one single strand, each single strand comprising: at least two switches in series, a single ring comprising: at least three switches (e.g., single-chain switch 1 in fig. 2) connected in sequence, the switches at both ends of each single-chain being connected to any two different switches in a single ring (e.g., single-ring switch 2 in fig. 2).
In this embodiment, the single-chain switch at single-chain both ends can be defined as chain head and chain tail (a plurality of single-chain switches can be established in series in the middle of chain head and chain tail, or the single-chain switch is not established in series), chain head and chain tail respectively with in the monocycle arbitrary two different monocycle switches be connected, can build many single-chains like this on a monocycle, and then can build out complicated network structure, provide redundancy backup protection for every single-chain simultaneously, improved the reliability of whole network. It should be noted that the single-chain switch 1 and the single-ring switch 2 are both switches that can implement multiple network redundancy settings according to the present embodiment.
Further, referring to fig. 1, when the user selects the networking mode of the chain self-healing ring,
The networking detection module 300 is further configured to receive a new first detection packet sent by the connected switch, where the new first detection packet includes: and new first detection information and MAC information of the connected switch, wherein the new first detection information is obtained by analyzing the received first detection data packet by the connected switch.
The networking detection module 300 is further configured to parse the received new first detection packet through a preset chain self-healing ring protocol to obtain new first detection information.
The networking detection module 300 is further configured to determine that the chained self-healing ring works normally when the new first detection data information obtained through analysis is the same as the first detection data information sent by the new first detection data information.
In this embodiment, the single-chain switches at the single-chain both ends respectively send first detection data packets to the switch (single-chain switch or single-ring switch) that links to each other, after the switch that links to each other received first detection data packet, can be according to the chain self-healing ring agreement algorithm that predetermines, the first detection data packet of analysis, obtain new first detection data information, then assemble new first detection data information and the MAC information of self, form new first detection data packet, send to the switch that links to each other, analogize in proper order, until form the circulation in the chain self-healing ring.
Further, referring to fig. 1, the processing module 400 is further configured to configure a port of the switch to be in a blocking state when it is determined that the chain self-healing ring works normally, where the blocking state is that the port of the switch does not receive and forward the communication data, but receives and forwards the first detection packet.
The processing module 400 is further configured to configure a port of the switch into an open state when the switch cannot receive the first detection data information that is the same as the first detection data information sent by the switch, where the open state is that the switch port receives and forwards the first detection data packet and the communication data.
The following briefly describes, with reference to fig. 2, a working process of the switch provided in this embodiment in the chain self-healing ring networking mode:
when two switches at two ends of a single chain are respectively defined and set as a chain head and a chain tail in a chain self-healing ring, the chain head and the chain tail switches respectively send a first detection data packet containing own local MAC address to the connected switches; after receiving the first detection data packet, the switch directly connected with the head of the chain or the tail of the chain switch analyzes the data packet according to a preset chain self-healing ring protocol algorithm, then assembles information such as a local MAC address and first detection data information of the data packet, and sends the information to the next switch in the chain self-healing ring; and so on. When all switches on a chained ring calculate the same first detection data information, indicating that the chained ring exists, a port of the switch is configured to be in a blocking state immediately, so as to prevent a broadcast storm. When the system works normally, each switch continuously and circularly detects the first detection data packet, and if the state on the chain is not changed, a certain port on the chain is maintained to be configured into a blocking state. If a certain connection port on the chain is disconnected or a certain switch is powered off, a first detection data packet cannot be transmitted to a next-stage switch; and when the original blocking port switch cannot receive the first detection data, opening and configuring the original blocking port, and immediately recovering the data link. If the chain head and the chain tail switch detect that the chain self-healing ring exists again, one port of the switch is configured to be in a blocking state, and a broadcast storm is prevented from being generated.
In this embodiment, the chain-type self-healing ring is a new self-healing ring constructed by accessing multiple single chains on the basis of a single ring, and a complex network structure with redundancy backup protection can be constructed by adding multiple single chains, so that the reliability of the entire network is improved.
Optionally, referring to fig. 3, the dual-homing self-healing ring includes: at least one switch (e.g. the host switch 3 in fig. 3) and a plurality of connected or tangent single rings, wherein two ring network ports of the switch are respectively connected with one or two different switches (e.g. the node switch 4 in fig. 3) in any single ring, and the single ring is formed by connecting at least three switches in series.
In this embodiment, the dual-homing self-healing ring is defined and planned based on nodes (i.e., switches), so that two ring ports of a host switch can access any two different nodes in any tangent ring and any intersecting ring. The two nodes can belong to different single rings or the same single ring, the connection mode is very flexible and convenient, and the redundant backup protection of the service is always effective. It should be noted that the host switch 3 and the node switch 4 are both switches that can implement multiple network redundancy settings according to this embodiment.
Further, referring to fig. 1, when the user selects the networking mode of the dual-homing self-healing ring,
The networking detection module 300 is further configured to receive a new second detection data packet sent by the connected switch, where the new second detection data packet includes: and new second detection information and MAC information of the connected switch, wherein the new second detection information is obtained by analyzing the received second detection data packet by the connected switch.
The networking detection module 300 is further configured to analyze the received new second detection data packet through a preset dual-homing self-healing ring protocol to obtain new second detection information.
The networking detection module 300 is further configured to determine that the dual-return self-healing ring protocol works normally when the new second detection data information obtained through analysis is the same as the second detection data information sent by the new second detection data information.
In this embodiment, the same dual-homing self-healing ring protocol is preset in both the host switch and the node switch, the second detection data information is obtained through analysis by the algorithm, and the second detection data information obtained through analysis and the MAC address information of the second detection data information are packaged and assembled to form a new second detection data packet, which is continuously transmitted in the dual-homing self-healing ring until the second detection data packet is transmitted back to the host switch.
Further, referring to fig. 1, the processing module 400 is further configured to configure a port of the switch to be in a blocking state when it is determined that the dual-homing self-healing ring works normally, where the blocking state is that the port of the switch does not receive or forward the communication data, but receives or forwards the second detection packet.
The processing module 400 is further configured to configure the port of the switch into an open state when the switch cannot receive the second detection data information that is the same as the second detection data information sent by the switch, where the open state is that the switch port receives and forwards the second detection data packet and the communication data.
The following briefly describes, with reference to fig. 3, a working process of the switch provided in this embodiment in the dual-homing self-healing ring networking mode:
when the host switch is defined and set to be in a dual-return self-healing ring networking mode, the host switch sends a second detection data packet containing a local MAC address of the host switch to a ring network port of a dual-return self-healing ring; after receiving the second detection data packet, the node switch directly connected with the host switch splits and analyzes the second detection data packet, then assembles the local MAC address, the analyzed second detection data information and the like, and sends the second detection data information to the next switch of the dual-return self-healing ring; and so on. When all the switches on the dual-return self-healing ring calculate the same second detection data information, the dual-return self-healing ring is indicated to exist, and one ring network port of the host switch is configured to be in a blocking state immediately, so that a broadcast storm is prevented from being generated. And each switch on the dual-return self-healing ring continuously and circularly detects the second detection data packet, and if the state on the ring is not changed, the configuration of a certain port into a blocking state is maintained. If a certain link on the dual-homing self-healing ring is disconnected or a certain switch is powered off, a second detection data packet cannot be transmitted to a next-stage switch, so that when the ring network port in the original blocking state cannot receive the second detection data packet, the ring network port in the original blocking state is opened and configured, and the data link is recovered immediately. If the detection initiated by the host switch finds that the dual-return self-healing ring exists again, one port in the dual-return self-healing ring is configured to be in a blocking state again, and the broadcast storm is prevented from being generated.
In this embodiment, the dual-homing self-healing ring is defined and planned based on switches, and two ring ports of a host switch can access any two different nodes in any tangent ring and any intersecting ring. The two nodes can belong to different single rings or the same single ring, the connection mode is very flexible and convenient, the limitation on the host switch is less, and the reliability of the redundancy backup protection on the service of the host switch is high.
It should be noted that, in the aspect of networking, the switch provided in this embodiment may implement multiple network redundancy settings, including a single ring, an intersecting ring, a chained self-healing ring, and a dual-return self-healing ring, and is rich in function, and a complex network is easily established, so that while the security of service information is effectively ensured, the reliability of networking is greatly improved; meanwhile, in the aspect of self-healing performance, the root switch directly executes service recovery without time-consuming root searching, meanwhile, the root switch opens a blocking port in the service recovery, no intermediate link exists, the self-healing efficiency of the ring network is high, the self-healing time is short, in practical application, 10 industrial switches complete self-healing within 5 milliseconds in networking test, the standard is far lower than the standard of 20 milliseconds required by engineering bidding, and effective protection measures can be provided for bearing services.
The switch provided by the embodiment of the invention can realize various network redundancy settings, including single ring, intersected ring, chained self-healing ring and double-return self-healing ring, has rich functions, is easy to establish a complex network, and has high reliability of the redundancy backup protection of the switch service; in addition, when the switch carries out redundancy backup protection, the root switch directly executes service recovery without time-consuming root searching, meanwhile, the service recovery is that the root switch opens a blocking port, no intermediate link exists, the self-healing efficiency of the network is high, and the safety redundancy protection of the switch service can be effectively improved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (4)
1. A switch capable of implementing multiple network redundancy settings, comprising:
a networking mode selection module, configured to determine a networking mode of the switch according to a selection of a user, where the networking mode includes: single ring, intersecting ring, chain self-healing ring, double-return self-healing ring;
a storage module, configured to store a network protocol corresponding to a networking mode, where the network protocol includes: a single ring protocol, an intersecting ring protocol, a chained self-healing ring protocol, and a dual-homing self-healing ring protocol;
the networking detection module is used for detecting whether the network corresponding to the networking mode selected by the user works normally or not;
the processing module is used for providing corresponding redundancy backup protection for the switch when the network normally works according to the network protocol corresponding to the networking mode;
the chain self-healing ring comprises: at least one single strand and one single strand, each single strand comprising: at least two switches in series, a single ring comprising: at least three switches are connected in sequence, and the switches at two ends of each single chain are respectively connected with any two different switches in the single ring;
when a user selects a networking mode of the chain self-healing ring:
networking detection module still is used for sending first detection data package to the switch that links to each other in the chain self-healing ring, first detection data package includes: first detection data information and respective MAC address information;
the networking detection module is further configured to receive a new first detection data packet sent by the connected switch, where the new first detection data packet includes: new first detection information and MAC information of a connected switch, wherein the new first detection information is obtained by analyzing a received first detection data packet by the connected switch;
the networking detection module is further used for analyzing the received new first detection data packet through a preset chain self-healing ring protocol to obtain new first detection information;
the networking detection module is further used for judging that the chained self-healing ring works normally when the new first detection data information obtained through analysis is the same as the first detection data information sent by the networking detection module;
the processing module is further configured to configure a port of the switch to be in a blocking state when the normal operation of the chained self-healing ring is judged;
the processing module is further configured to configure a port of the switch into an open state when the switch cannot receive first detection data information that is the same as the first detection data information sent by the switch;
the dual-homing self-healing ring comprises: the system comprises at least one switch and a plurality of connected or tangent single rings, wherein two ring network ports of the switch are respectively connected with one or two different switches in any single ring, and the single ring is formed by connecting at least three switches in series;
when a user selects a networking mode of the dual-homing self-healing ring:
the networking detection module is also used for sending a second detection data packet to the switch connected in the dual-return self-healing ring, and the second detection data packet comprises: second detection data information and respective MAC address information;
the networking detection module is further configured to receive a new second detection data packet sent by the connected switch, where the new second detection data packet includes: new second detection information and MAC information of the connected switch, wherein the new second detection information is obtained by analyzing the received second detection data packet by the connected switch;
the networking detection module is further used for analyzing the received new second detection data packet through a preset dual-homing self-healing ring protocol to obtain new second detection information;
the networking detection module is further used for judging that the dual-return self-healing ring protocol works normally when the new second detection data information obtained through analysis is the same as the second detection data information sent by the networking detection module;
the processing module is further configured to configure a port of the switch to be in a blocking state when the dual-homing self-healing ring is judged to normally work;
the processing module is further configured to configure the port of the switch to an open state when the switch cannot receive second detection data information that is the same as the second detection data information sent by the switch.
2. The switch of claim 1, wherein the blocking state is that the switch port does not receive and forward communication data, but receives and forwards a first detection packet;
the opening state is that the switch port receives and forwards the first detection data packet and the communication data.
3. The switch of claim 1, wherein the blocking state is that the switch port does not receive and forward communication data, but receives and forwards a second detection packet;
and the opening state is that the switch port receives and forwards the second detection data packet and the communication data.
4. The switch of claim 1, wherein the single ring is formed from at least three switches connected in series, and wherein the intersecting ring comprises a plurality of connected single rings.
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| CN110247835B (en) * | 2019-06-13 | 2021-09-07 | 深圳市遐域技术有限公司 | Industrial switch ring network with dual redundancy protection function |
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| DE69732676T2 (en) * | 1996-04-23 | 2006-04-13 | Hitachi, Ltd. | Self-healing network, and switching method for transmission lines and transmission equipment therefor |
| CN100486204C (en) * | 2006-11-24 | 2009-05-06 | 中兴通讯股份有限公司 | Multi-loop contact Ethernet loop network loop protection switchover method |
| CN101345683B (en) * | 2007-07-11 | 2012-11-28 | 中兴通讯股份有限公司 | Protocol packet transmission control method of Ethernet automatic protection switch system |
| CN101626335B (en) * | 2008-07-09 | 2013-02-27 | 中兴通讯股份有限公司 | Data protection method of dual-connection network |
| CN101741670B (en) * | 2008-11-27 | 2012-12-19 | 中兴通讯股份有限公司 | Method for protecting multi-ring Ethernet |
| CN101753368B (en) * | 2008-12-01 | 2012-05-23 | 中兴通讯股份有限公司 | Method for protecting Ethernet |
| CN101815021B (en) * | 2009-02-23 | 2015-05-20 | 中兴通讯股份有限公司 | Method for implementing protocol channel in Ethernet protection |
| CN101741674A (en) * | 2009-12-22 | 2010-06-16 | 上海自动化仪表股份有限公司 | Method for realizing redundant ring and network recovery in Ethernet |
| CN105897578B (en) * | 2014-09-11 | 2019-07-02 | 姬磊 | A kind of substation's looped network protocol implementing method of rapidly self-healing |
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