CN103067151B - A kind of maintenance is by the devices and methods therefor of tandem link two ends state synchronized - Google Patents
A kind of maintenance is by the devices and methods therefor of tandem link two ends state synchronized Download PDFInfo
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Abstract
The present invention relates to a kind of device needing to carry out in a communication network being connected in series deployment, especially a kind of can making is kept synchronous devices and methods therefor by tandem link two ends operating state.Comprise: port A and port B; Port A condition control unit; Port B status unit; Overall situation main control unit and state synchronized computing unit.The invention solves the state synchronized of port A and port B, make to adopt after apparatus of the present invention, Peer-Port A condition changes, and by the active synchronization of port A and port B state, can cause the synchronous change of Peer-Port B state; Otherwise can be Peer-Port B state variation, cause the synchronous change of Peer-Port A condition.
Description
Technical field
The present invention relates to a kind of device needing to carry out in a communication network being connected in series deployment, especially a kind of can making is kept synchronous devices and methods therefor by tandem link two ends operating state.
Background technology
In communication network sustainable development, when particularly internet scale progressively increases, a class is more and more used, as traffic statistics, flow control and interference, data acquisition etc. by application equipment being serially connected in link.The technical characteristic that shows of this kind of application is, under the requirement of the key element such as specification, port, structure not changing network element device in existing network, man-to-man deployment facility or unit between target device, the circuit namely in the middle of two network equipments is connected in series the 3rd equipment.As shown in Figure 1, network element A and network element B is the equipment networked, and the present invention relates to device serial connection between network element A and network element B.
Be operated in communication equipment under tandem mode or unit as a kind of, under the prerequisite that performance index meet, also must have enough reliabilities, fail safe.This is because do not affect the requirement of the specification of original network element, port, structure, be show that the importance of this kind equipment is inferior to by the network element be connected in series.This kind equipment just exists as optional equipment.
Except the quality of dependence equipment itself and design realize some reliability and safeties, enough mechanisms also must be had by the safety of tandem link.
Usually, this kind equipment can rely on external or built-in switching protection, and realize when equipment working state is abnormal, automatic pouring leads to circuit, normal to ensure the communication of former circuit.As shown in Figure 2, line protective devices, when the present invention relates to device and occurring abnormal, recover line connectivity automatically.But external or built-in protective device can only realize serial connection equipment to be occurred abnormal, carries out switch protecting, and when terminal device occurs abnormal, not at the protection range of protective device.
But a very important reality is, in communication network of today, particularly IP(InternetProtocol) in network and signaling network, between the network equipment, between router/signalling point, when there is communication abnormality, rely on the change of line status or the change of opposite equip. state, whole network routing topological structure can be recalculated immediately.And to be connected in series deployment devices be a kind of active equipment, in the normal situation of self operating state, by the equipment of tandem link one end as network element A or its port occur extremely to make line interruption, and other end network element B is active device because of what directly connect, its port can continue to operate in normal condition, and thinks that network element A is also operated in normal condition.Then other end network element B can't know opposite end operating state change in time in port rank, makes the network routing infrastructure that can not upgrade in time.More it is a risk that, character for subsequent use is being belonged to by series winding circuit, and only rely on the physical state of circuit to carry out the existence of perception opposite end, active serial connection equipment or unit then shield this abnormal information that may exist by one end to other end transmission, but can not successfully enable when extension wire needs to be activated.
Therefore, this kind equipment, under current route protection technical capability, can only accomplish the protection of self exception, but when being occurred abnormal by the equipment at tandem link two ends or port, has blocked the transmission of abnormal information.
Summary of the invention
The problem to be solved in the present invention is, is connected in series in the active equipment of application a kind of support, and realize when the port of terminal device or line status change, the port at these active equipment two ends can not carry out the problem of state synchronized.This problem changes by causing network element in legacy network according to circuit, opposite equip. state and recalculates the intelligent route selection disabler of network data bang path in time.
In order to solve the problem, the invention provides a kind of maintenance by the device of tandem link two ends state synchronized, comprising: port A and port B, for this device provides actual external interface, port A and port B is paired relation, connects by the terminal device of connecting respectively; Port A condition control unit, the various state value of port of record port A, comprises on off state, operating rate, port capabilities scope, Peer-Port limit of power, simultaneously according to the instruction port switching A condition of overall main control unit; Port B status unit, the various state value of port of maintenance port B, comprises on off state, operating rate, port capabilities scope, Peer-Port limit of power, simultaneously according to the instruction port switching B state of overall main control unit; Overall situation main control unit, by configuration interface, port A/ port B is defined as pair of series port, the state information of port A and port B is obtained in real time respectively from port A control unit and port B control unit, export state synchronized computing unit to, by state synchronized computing unit calculate port A and port B institute should residing for result phase value and return, export port A control unit and port B control unit respectively to; State synchronized computing unit, the port A condition value according to input and port B state value, calculate the result phase value of port A and port B.
Described port A is the external interface of this device, connects by one of two equipment of this device serial connection, as shown in Figure 1 network element A.Port A condition is starting state, negotiation state and closed condition by force, when negotiation state, comprises the port limit of power and Peer-Port A limit of power.Port A and Peer-Port are consulted successfully, will be operated in the peak of both limits of power common factors.
Port A is directly connected with Peer-Port A, and by after auto negotiation success, is in starting state.Port A and Peer-Port A occurs either party to be changed to non-opening by port open, changes affecting the opposing party thereupon.
Described port B is the external interface of this device, connects by one of two equipment of this device serial connection, as shown in Figure 1 network element B.Port B state is starting state, negotiation state and closed condition by force, when negotiation state, comprises the port limit of power and Peer-Port B limit of power.Port B and Peer-Port are consulted successfully, will be operated in the peak of both limits of power common factors.
Port B is directly connected with Peer-Port B, and by after auto negotiation success, is in starting state.Port B and Peer-Port B occurs either party to be changed to non-opening by port open, changes affecting the opposing party thereupon.
Port A and port B is paired relation, and for the present invention relates to a docking port of device, port A connects network element A, and port B connects network element B.
Described port capabilities scope can transmit the rate value scope of data for port, comprises 155Mbps, the rate values such as 622Mbps, 2.5Gbps, 10Mbps, 100Mbps, 1000Mbps, 10Gbps, 40Gbps.
Port A condition control unit, the operating state of real-time acquisition port A, comprise port switch state, port speed state, port capabilities scope, Peer-Port limit of power, when the state of port A changes, the state of reporting port A gives overall main control unit.
Port B status unit, the operating state of real-time acquisition port B, comprise port switch and close state, port speed state, port capabilities scope, Peer-Port limit of power, when the state of port B changes, the state of reporting port B gives overall main control unit.
Overall situation main control unit, provides configuration interface that port A/ port B is defined as a pair port, receives each state reported from port A condition control unit or port B status unit, as parameter, and call state computation control unit.
State computation control unit, according to each port status parameter that overall main control unit reports, calculate the target-like state value of each port, namely the state reached required for port A and port B, this desired value state returns to overall main control unit, and result is specified and is handed down to port A condition control unit and port B status unit simultaneously by overall main control unit.
Present invention also offers a kind of maintenance by the method for tandem link two ends state synchronized.Comprise: overall main control unit collects the port status information reported from port A condition control unit and port B status unit, passes to state synchronized computing unit; State synchronized computing unit carries out opening tactful a1 according to Peer-Port state value and judges, as confirmed not open, forms out code b1; As confirmed to open, then carrying out power strategy a2 confirmation according to Peer-Port A limit of power, port A limit of power, port B limit of power, Peer-Port B limit of power, if do not occured simultaneously, forming out code b2; Occur simultaneously if existed, in intersection range, maximum rate ability is as ability to work, forms open command b3.In a process, b1, b2, b3 tri-kinds of results only have one effectively, form unique consequence instruction c3.Overall situation main control unit acquisition result phase, is handed down to port A condition control unit and port B status unit carries out state pressure adjustment.
According to Fig. 3, before employing apparatus of the present invention, Peer-Port A and Peer-Port B are directly connected, and two ports are can the state of directly perception circuit or the other side.After employing apparatus of the present invention, be attached thereto respectively by port A and port B.The change of Peer-Port A or Peer-Port B, can only cause the state respective change of port A and port B.The invention solves the state synchronized of port A and port B, after employing apparatus of the present invention, Peer-Port A condition changes, and by the active synchronization of port A and port B state, can cause the synchronous change of Peer-Port B state; Otherwise can be Peer-Port B state variation, cause the synchronous change of Peer-Port A condition.
Accompanying drawing explanation
Fig. 1 the present invention relates to the schematic diagram of device serial connection at network element A and network element B.
Fig. 2 the present invention relates to the schematic diagram that device is connected to line protective devices.
Fig. 3 is a kind of maintenance of the present invention by the transparent device of link in tandem state.
Fig. 4 is that a kind of maintenance of the present invention is by the method schematic diagram of tandem link two ends state synchronized.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
As shown in Figure 3, the invention provides a kind of maintenance by the transparent device of link in tandem state, Fig. 4 is that a kind of maintenance of the present invention is by the method schematic diagram of tandem link two ends state synchronized.
Comprise: port A1, port B2, port A condition control unit 3, port B status unit 4, overall main control unit 5, state synchronized computing unit 6.
Port A1: provide wherein 1 of 1 pair of outside port, is connected in series wherein 1 of network element device in order to connect 2.
Port A is visible physical interface, can be optical interface or electrical interface, possesses one or more rate capacities.When port A is connected with Peer-Port A, when either party is in closed condition, the opposing party can not open; When two sides are in opening, the peak of respective rate capacity scope common factor will be operated in.This belongs to known function, before device involved in the present invention is deployed, is like this, is not described in detail herein between Peer-Port A and Peer-Port B.
Port B2: provide wherein 1 of 1 pair of outside port, is connected in series wherein 1 of network element device in order to connect 2.
Port B is visible physical interface, can be optical interface or electrical interface, possesses one or more rate capacities.When port B is connected with Peer-Port B, when either party is in closed condition, the opposing party can not open; When two sides are in opening, the peak of respective rate capacity scope common factor will be operated in.This belongs to known function, before device involved in the present invention is deployed, is like this, is not described in detail herein between Peer-Port A and Peer-Port B.
Port A condition control unit: the operating state obtaining port A in real time, as open/close state, operating rate, the limit of power of port A, and the limit of power of Peer-Port A is equivalent, and store these values; Can direct control port A operating state.
Port A condition control unit is hardware interface chip, and the state information realizing port A stores and status control module, and has the independent memory space storaging state information of one piece of fixed size.When each state value of port A changes, report overall main control unit.Port A condition control unit receives the instruction from overall main control unit simultaneously, the operating state of direct control port A.
Port B status unit: the operating state obtaining port B in real time, as open/close state, operating rate, the limit of power of port B, and the limit of power of Peer-Port B is equivalent, and store these values; Can direct control port B operating state.
Port B status unit is hardware interface chip, and the state information realizing port B stores and status control module, and has the independent memory space storaging state information of one piece of fixed size.When each state value of port B changes, report overall main control unit.Port B status unit receives the instruction from overall main control unit simultaneously, the operating state of direct control port B.
Overall situation main control unit: the control and management unit of the overall situation.There is provided configuration interface, two ports of specifying arbitrarily are formed into port set, multiple port set composition port set relation table.Port A, port B are defined as a pair port.
Overall situation main control unit runs on master cpu (CentralProcessingUnit, central processing unit) on, by the port status information reported from port A condition control unit and port B status unit, as one group of Parameter transfer to state synchronized computing unit, calculate port A and port B objective result state and return to overall main control unit.This objective result state value is handed down to port A condition control unit and port B status unit by overall main control unit.
State synchronized computing unit: a pair port state information inputted according to overall main control unit, by logical calculated, determines port objective result state.
State synchronized computing unit receives a pair port state information from overall main control unit, comprises port A condition, port A speed, port A limit of power, Peer-Port A limit of power, port B state, port B speed, port B limit of power, Peer-Port B limit of power.First carry out opening strategy according to Peer-Port A limit of power and Peer-Port B limit of power to judge, as not being entirely 0, then enter power strategy to judge, carry out and operation with port A limit of power, Peer-Port A limit of power, port B limit of power, Peer-Port B limit of power.As exist occur simultaneously and be not 0, then formed open command and using occur simultaneously in maximum rate value as operating rate.Otherwise formation out code.
Support that the GE tandem arrangement of 10M/100M/1000Mbps speed does example explanation with port below.In preferably implementation system, device possesses multiple outside port, and these outside ports configure by configuration interface between two in pairs that provided by overall main control unit, get wherein carry out for a pair example be respectively port A port B.By port A port B connect Peer-Port be respectively Peer-Port A (10M/100M/1000Mbps, GE interface) and Peer-Port B (10M/100Mbps, FE interface), be RJ45 interface.In the following description, the operation by plugging netting twine embodies the state variation of Peer-Port A or Peer-Port B.
In initial condition, port A is not all connected with Peer-Port B with Peer-Port A, port B.
The first step, connectivity port A and Peer-Port A, starts between two-port to consult and mutually transmits the port limit of power.Port A condition control unit obtains port A condition (closed condition), port A speed (0), port A limit of power (10M/100M/1000Mbps) in real time, Peer-Port A limit of power (10M/100M/1000Mbps), wherein Peer-Port A limit of power changes, and port A condition control unit will report to overall main control unit by each state value herein.According to port set relation table, overall situation main control unit confirms that port B is relative port, now port B status unit not simultaneously reporting information, overall situation main control unit active inquiry port B status unit, obtain port B state (closed condition), port B speed (0), port B limit of power (10M/100M/1000Mbps), Peer-Port B limit of power (0), two groups of states are passed to state synchronized computing unit.
State synchronized computing unit first Peer-Port A limit of power (10M/100M/1000Mbps) and Peer-Port B limit of power (0) carries out and operation, confirms that result is 0, forms out code, and return to overall main control unit.Overall situation main control unit issues out code to port A condition control unit and port B status unit.Port A and port B fails to open.
Second step, connectivity port B and Peer-Port B.Start between two-port to consult and mutually transmit the port limit of power.Port B status unit obtains port B state (closed condition), port B speed (0), port B limit of power (10M/100M/1000Mbps) in real time, Peer-Port B limit of power (10M/100Mbps), wherein Peer-Port B limit of power changes, and port B status unit will report to overall main control unit by each state value herein.According to port set relation table, overall situation main control unit confirms that port A is relative port, now port A condition control unit not simultaneously reporting information, overall situation main control unit active inquiry port A condition control unit, obtain port A condition (closed condition), port B speed (0), port A limit of power (10M/100M/1000Mbps), Peer-Port A limit of power (10M/100M/1000Mbps), two groups of states are passed to state synchronized computing unit.
State synchronized computing unit first Peer-Port A limit of power (10M/100M/1000Mbps) and Peer-Port B limit of power (10M/100Mbps) carries out and operation, confirms that result is (10M/100Mbps), forms open command.State synchronized computing unit is according to port A limit of power (10M/100M/1000Mbps), Peer-Port A limit of power (10M/100M/1000Mbps), port B limit of power (10M/100M/1000Mbps), Peer-Port B limit of power (10M/100Mbps) carries out power strategy confirmation, confirm as (10M/100Mbps), form open command.And return to overall main control unit.Overall situation main control unit issues open command (comprising 10M/100Mbps) to port A condition control unit and port B status unit.Port A and port B opens.
3rd step, disconnects port A and Peer-Port A, port A and closes.Port A condition control unit obtains port A condition (closed condition), port A speed (0), port A limit of power (10M/100M/1000Mbps) in real time, Peer-Port A limit of power (0).Its middle port A condition, Peer-Port A limit of power change, and port A condition control unit will report to overall main control unit by each state value herein.According to port set relation table, overall situation main control unit confirms that port B is relative port, now port B status unit not simultaneously reporting information, overall situation main control unit active inquiry port B status unit, obtain port B state (opening), port B speed (100M), port B limit of power (10M/100M/1000Mbps), Peer-Port B limit of power (10M/100Mbps), two groups of states are passed to state synchronized computing unit.
State synchronized computing unit first Peer-Port A limit of power (0) and Peer-Port B limit of power (10M/100Mbps) carries out and operation, confirms that result is 0, forms out code, and return to overall main control unit.Overall situation main control unit issues out code to port A condition control unit and port B status unit.Port A and port B closes.
In the present embodiment, Peer-Port A and Peer-Port B selects other speed to test successively, and result is as follows:
。
Claims (2)
1. keep by a device for tandem link two ends state synchronized, it is characterized in that, comprising:
Port A and port B, for this device provides actual external interface, port A and port B is paired relation, connects by the terminal device of connecting respectively;
Port A condition control unit, the various state value of port of record port A, comprises on off state, operating rate, port capabilities scope, Peer-Port limit of power, simultaneously according to the instruction port switching A condition of overall main control unit;
Port B status unit, the various state value of port of maintenance port B, comprises on off state, operating rate, port capabilities scope, Peer-Port limit of power, simultaneously according to the instruction port switching B state of overall main control unit; Described port capabilities scope can transmit the rate value scope of data for port;
Overall situation main control unit, by configuration interface, port A and port B is defined as pair of series port, the state information of port A and port B is obtained in real time respectively from port A control unit and port B control unit, export state synchronized computing unit to, by state synchronized computing unit calculate port A and port B institute should residing for result phase value and return, export port A control unit and port B control unit respectively to;
State synchronized computing unit, the port A condition value according to input and port B state value, calculate the result phase value of port A and port B;
Described port A is the external interface of this device, and port A condition is starting state, negotiation state and closed condition by force, when negotiation state, comprises the port limit of power and Peer-Port A limit of power; Port A and Peer-Port are consulted successfully, will be operated in the peak of both limits of power common factors;
Described port B is the external interface of this device, and port B state is starting state, negotiation state and closed condition by force, when negotiation state, comprises the port limit of power and Peer-Port B limit of power; Port B and Peer-Port are consulted successfully, will be operated in the peak of both limits of power common factors.
2. to keep described in claim 1 by the maintenance of tandem link two ends state synchronizing apparatus, by a method for tandem link two ends state synchronized, it is characterized in that, comprising the steps:
Overall situation main control unit collects the port status information reported from port A condition control unit and port B status unit, passes to state synchronized computing unit;
State synchronized computing unit carries out opening tactful a1 according to Peer-Port state value and judges, as confirmed not open, forms out code b1; As confirmed to open, then carrying out power strategy a2 confirmation according to Peer-Port A limit of power, port A limit of power, port B limit of power, Peer-Port B limit of power, if do not occured simultaneously, forming out code b2; Occur simultaneously if existed, in intersection range, maximum rate ability is as ability to work, forms open command b3; In a process, b1, b2, b3 tri-kinds of results only have one effectively, form unique consequence instruction c3;
Overall situation main control unit acquisition result phase, is handed down to port A condition control unit and port B status unit carries out state pressure adjustment.
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| CN103501239B (en) | 2013-09-13 | 2017-01-04 | 华为技术有限公司 | A kind of port status synchronous method, relevant device and system |
| CN104519053A (en) * | 2014-12-02 | 2015-04-15 | 重庆晴彩科技有限公司 | Symmetric switching control method for network physical link |
| CN104579742B (en) * | 2014-12-02 | 2017-09-19 | 重庆晴彩科技有限公司 | A kind of network physical link switching control module |
| CN114827098B (en) * | 2021-01-28 | 2024-10-18 | 华为技术有限公司 | Method, device, electronic equipment and readable storage medium for taking photo |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6160548A (en) * | 1997-04-15 | 2000-12-12 | Lea; Christopher B. | Method and mechanism for synchronizing hardware and software modules |
| CN1801820A (en) * | 2006-01-11 | 2006-07-12 | 杭州华为三康技术有限公司 | Port state shift method |
| CN101252459A (en) * | 2008-03-24 | 2008-08-27 | 中兴通讯股份有限公司 | Method for setting protocol state of chain circuit terminal port and supervising method thereof |
| CN101888307A (en) * | 2009-05-13 | 2010-11-17 | 阿瓦亚公司 | Be used for the local method and apparatus of realizing that port is selected |
-
2013
- 2013-02-04 CN CN201310040911.2A patent/CN103067151B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6160548A (en) * | 1997-04-15 | 2000-12-12 | Lea; Christopher B. | Method and mechanism for synchronizing hardware and software modules |
| CN1801820A (en) * | 2006-01-11 | 2006-07-12 | 杭州华为三康技术有限公司 | Port state shift method |
| CN101252459A (en) * | 2008-03-24 | 2008-08-27 | 中兴通讯股份有限公司 | Method for setting protocol state of chain circuit terminal port and supervising method thereof |
| CN101888307A (en) * | 2009-05-13 | 2010-11-17 | 阿瓦亚公司 | Be used for the local method and apparatus of realizing that port is selected |
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Denomination of invention: Device for keeping state synchronization on both ends of serially-connected links and method therefor Effective date of registration: 20180202 Granted publication date: 20160413 Pledgee: Xuhui Shanghai financing Company limited by guarantee Pledgor: Constant technology (Shanghai) Limited by Share Ltd Registration number: 2018990000103 |
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Date of cancellation: 20190312 Granted publication date: 20160413 Pledgee: Xuhui Shanghai financing Company limited by guarantee Pledgor: Constant technology (Shanghai) Limited by Share Ltd Registration number: 2018990000103 |