CN105530113A - Method and device for realizing protection switching of spanning tree protocol - Google Patents
Method and device for realizing protection switching of spanning tree protocol Download PDFInfo
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- CN105530113A CN105530113A CN201410571022.3A CN201410571022A CN105530113A CN 105530113 A CN105530113 A CN 105530113A CN 201410571022 A CN201410571022 A CN 201410571022A CN 105530113 A CN105530113 A CN 105530113A
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Abstract
The embodiment of the invention provides a method and device for realizing protection switching of spanning tree protocol STP. Detection messages are periodically sent in a bidirectional forwarding detection BFD session built from port to port; when detecting certain port does not receive the detection message of the opposite end port, an STP protection switching indicating message is sent.
Description
Technical field
The present invention relates to data communication and transmission technique field, particularly relate to a kind of method and apparatus of Spanning-Tree Protocol (SpanningTreeProtocol, STP) pretection switch.
Background technology
STP is a kind of double layer network management agreement.In data communication field, there are three kinds of STP protocol version: STP, RSTPs (RapidSpanningTreeProtocol, RSTP), Multiple Spanning Tree Protocol (MultipleSpanningTreeProtocol, MSTP).Keep down between described STP protocol version compatibility.Wherein, RSTP is the optimization on STP basis, improves STP performance greatly, can meet the network requirement of low delay, high reliability; MSTP is the further improvement on RSTP basis, and MSTP allows multiple VLAN (VirtualLocalAreaNetwork, VLAN) to be bundled in a spanning-tree instance.
In correlation technique, although STP protocol version obtains successive optimization, still there are the following problems for STP at present:
1) because spanning tree is to judge that whether link is normal by transmitting-receiving protocol massages, therefore when physical link interrupts, particularly when certain go-between of not enabled spanning tree occurs that link is abnormal, spanning tree cannot know link failure in time, needs etc. receive the overtime agreement that just starts of STP BPDUs and rerun, thus cause service outage duration long.
2) because STP cannot the performance state of perception link, therefore when certain active link service damage is serious, as there is a large amount of error code, STP can not be triggered during packet loss and switch.
3) in the real running environment of equipment, usually there will be software view program operation exception and hardware view business forwards normal situation.In this case, the crawled central processing unit (CentralProcessingUnit, CPU) to equipment of STP BPDUs, CPU cannot normal process STP BPDUs continue to forward, and makes STP BPDUs by abort, thus produces broadcast storm.
For the problems referred to above, in correlation technique, there is not effective solution.
Summary of the invention
In view of this; the embodiment of the present invention is expected to provide a kind of method and apparatus realizing STP pretection switch; the malfunction of link can be known fast, thus trigger the action of corresponding STP pretection switch in time, and then reduce the service outage duration because link failure causes.
For achieving the above object, the technical scheme of the embodiment of the present invention is achieved in that
The embodiment of the present invention provides a kind of method realizing STP pretection switch, and the method also comprises:
Regularly detect in (BidirectionalForwardingDetection, BFD) session at the two-way converting of the port-to-port created and send detection messages;
When detection has certain port not receive the detection messages of Peer-Port, send STP pretection switch Indication message.
In such scheme, when detection has certain port not receive the detection messages of Peer-Port, described method also comprises:
The link connected state identified between described port and Peer-Port is link failure.
In such scheme, after the link connected state between the described port of described mark and Peer-Port is malfunction, described method also comprises:
When detect have described port accepts to the detection messages of Peer-Port time, transmission STP pretection switch Indication message.
In such scheme, described method also comprises:
Add up the anomalous performance value of each port; The port cost of each port current is determined according to the anomalous performance value of each added up port; According to the port cost of each port determined, in network topology, select an optimum link as active link.
In such scheme, described method also comprises:
When detect have be used to indicate described software runtime environment write heartbeat register value do not change time, block all of the port.
The embodiment of the present invention also provides a kind of device realizing STP pretection switch, and this device comprises the first sending module and the second sending module; Wherein,
Described first sending module, sends detection messages in the BFD session for the regular port-to-port creating;
Described second sending module, for when detection has certain port not receive the detection messages of Peer-Port, sends STP pretection switch Indication message.
In such scheme, described device also comprises identification module;
Described identification module, for when detection has certain port not receive the detection messages of Peer-Port, the link connected state identified between described port and Peer-Port is link failure.
In such scheme, described device also comprises the 3rd sending module;
Described 3rd sending module, for when detect have described port accepts to the detection messages of Peer-Port time, transmission STP pretection switch Indication message.
In such scheme, described device also comprises statistical module, determination module and selection module;
Described statistical module, for adding up the anomalous performance value of each port;
Described determination module, for determining the port cost of each port current according to the anomalous performance value of each added up port;
Described selection module, for the port cost according to each port determined, selects an optimum link as active link in network topology.
In such scheme, described device also comprises blocking module;
Described blocking module, for when detect have be used to indicate described software runtime environment write heartbeat register value do not change time, block all of the port.
The method and apparatus of what the embodiment of the present invention provided realize STP pretection switch, regularly sends detection messages in the BFD session of the port-to-port created; When detection has certain port not receive the detection messages of Peer-Port, send STP pretection switch Indication message, carry out pretection switch with real-time informing STP.So, the malfunction of link can be known fast, thus trigger the action of corresponding STP pretection switch in time, and then reduce the service outage duration because link failure causes.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet one that the embodiment of the present invention realizes the method for STP pretection switch;
Fig. 2 is the schematic flow sheet two that the embodiment of the present invention realizes the method for STP pretection switch;
Fig. 3 is the schematic flow sheet three that the embodiment of the present invention realizes the method for STP pretection switch;
Fig. 4 is the schematic flow sheet four that the embodiment of the present invention realizes the method for STP pretection switch;
Fig. 5 is the composition structural representation one that the embodiment of the present invention realizes the device of STP pretection switch;
Fig. 6 is the composition structural representation two that the embodiment of the present invention realizes the device of STP pretection switch;
Fig. 7 is the composition structural representation three that the embodiment of the present invention realizes the device of STP pretection switch;
Fig. 8 is the composition structural representation four that the embodiment of the present invention realizes the device of STP pretection switch;
Fig. 9 is the composition structural representation five that the embodiment of the present invention realizes the device of STP pretection switch.
Embodiment
In embodiments of the present invention, regularly in the BFD session of the port-to-port created, detection messages is sent; When detection has certain port not receive the detection messages of Peer-Port, send STP pretection switch Indication message.
Here, it should be noted that, port involved in embodiments of the present invention all refers to Spanning-Tree Protocol instance port, i.e. STP instance port.
Below in conjunction with drawings and the specific embodiments, the present invention is further described in more detail.
Fig. 1 is the schematic flow sheet one that the embodiment of the present invention realizes the method for STP pretection switch, and as shown in Figure 1, the method that the embodiment of the present invention realizes STP pretection switch comprises:
Step S101: regularly send detection messages in the BFD session of the port-to-port created;
Particularly, the BFD detection module by configuring in each port regularly sends detection messages in the BFD session of the port-to-port created.
In embodiments of the present invention, the BFD detection module being respectively each port arrangement port-to-port in advance in the ethernet ring network of STP is needed.Meanwhile, each both link ends in ethernet ring network sets up BFD session, namely creates the BFD session of port-to-port.Like this, after the BFD session establishment of described port-to-port, through consultation, regularly can send BFD detection messages to opposite end, realize the fast detecting to link connected state between the BFD detection module configured in each port.
Here, BFD agreement is a kind of path connectivity detection protocol.BFD agreement can fast detecting to the fault in forward-path.BFD agreement, by three-way handshake mechanism, can provide the detection of connectivity of link both direction back and forth.
Step S102: when detection has certain Single port not receive the detection messages of Peer-Port, sends STP pretection switch Indication message.
Particularly, when having certain Single port not receive the detection messages of Peer-Port by described BFD detection module detection, STP pretection switch Indication message is sent to the STP processing module in STP ethernet ring network.
Here, it is example that each both link ends in ethernet ring network sets up BFD session, BFD detection module in two ports is set up in BFD session at it and is periodically sent detection messages, when described BFD detection module detection has certain port not receive the detection messages of opposite end, then can determine that the link connected state between described port and Peer-Port there occurs fault.Now, illustrate that Ethernet topology changes, need to send STP pretection switch Indication message to the STP processing module in STP ethernet ring network, carry out pretection switch with real-time informing STP.
In embodiments of the present invention, described method comprises further:
Step S103: the link connected state identified between described port and Peer-Port is link failure.
Particularly, described BFD detection module identifies the link connected state between described port and Peer-Port is link failure.
It should be noted that; step S102 and step S103 there is no sequencing in the process of implementation; in actual applications; two steps can be synchronous execution usually; namely, when detection has certain Single port not receive the detection messages of Peer-Port, send STP pretection switch Indication message, carry out pretection switch with real-time informing STP; meanwhile, the link connected state identified between described port and Peer-Port is link failure.
So, by realizing the method for STP pretection switch described in the embodiment of the present invention, the malfunction of link can be known fast, thus trigger the action of corresponding STP pretection switch in time, and then reduce the service outage duration because link failure causes.
Fig. 2 is the schematic flow sheet two that the embodiment of the present invention realizes the method for STP pretection switch, and as shown in Figure 2, the method that the embodiment of the present invention realizes STP pretection switch comprises:
Step S101: regularly detect in BFD session at the two-way converting of the port-to-port created and send detection messages;
Step S102: when detection has certain port not receive the detection messages of Peer-Port, sends STP pretection switch Indication message;
Step S103: the link connected state identified between described port and Peer-Port is link failure;
Step S101 in the embodiment of the present invention three to step S103 can distinguish accordingly see the step S101 in embodiment one to step S103, be save length, repeat no more here.
Step S201: when detect have described port accepts to the detection messages of Peer-Port time, transmission STP pretection switch Indication message.
Particularly, when described BFD detection module detect have described port accepts to the detection messages of Peer-Port time, to the STP processing module transmission STP pretection switch Indication message in STP ethernet ring network.
Here; it is example that each both link ends in ethernet networks sets up BFD session; in step S102 ~ 103; when detection has certain port not receive the detection messages of opposite end; then can determine that the link connected state between described port and Peer-Port there occurs fault; the link connected state identified during historical facts or anecdotes between described port and Peer-Port is link failure; now; illustrate that ethernet ring network topology there occurs change; need to send STP pretection switch Indication message, carry out pretection switch with real-time informing STP.Further; in step s 201; when detect have described port accepts to the detection messages of Peer-Port time; link connected state between the port identified described in can determining and Peer-Port is from link failure recovery to normal operating conditions; now; illustrate that ethernet ring network topology there occurs change, need again to send STP pretection switch Indication message, carry out pretection switch with real-time informing STP.
So, by realizing the method for STP pretection switch described in the embodiment of the present invention, the malfunction of link can be known fast, thus trigger the action of corresponding STP pretection switch in time, and then reduce the service outage duration because link failure causes.
Fig. 3 is the schematic flow sheet three that the embodiment of the present invention realizes the method for STP pretection switch, and as shown in Figure 3, the method that the embodiment of the present invention realizes STP pretection switch comprises:
Step S101: regularly send detection messages in the BFD session of the port-to-port created;
Step S102: when detection has certain Single port not receive the detection messages of Peer-Port, sends STP pretection switch Indication message;
Step S101 in the embodiment of the present invention three to step S102 can distinguish accordingly see the step S101 in embodiment one to step S102, be save length, repeat no more here.
Step S301: the anomalous performance value of adding up each port;
Here, described anomalous performance value can comprise packet loss, the error rate, mistake frame number etc. and can reflect any one in the performance item of link performance deterioration or multiple combination.Accordingly, packet loss, the error rate, mistake frame number etc. that the anomalous performance value of adding up each port comprises each port of statistics can reflect any one in the performance item of link performance deterioration or multiple combination.
In embodiments of the present invention, the mode of the anomalous performance value of each port of statistics is not limited.For the error rate, simply can obtain the error rate according to the account form statistics of wrong frame number/(normal frame number+mistake frame number), also the error rate can be obtained by industry universal means statistics such as oam (OperationAdministrationandMaintenance, OAM) protocol detection link error rates.
In addition, it should be noted that, in embodiments of the present invention, need to set up anomalous performance value and the transformational relation corresponding to port cost in advance.When the anomalous performance value of port is zero, when namely there is not anomalous performance, the port cost of port cost for defining in Spanning-Tree Protocol of described port, i.e. normal port cost.When the anomalous performance of port is poorer, when namely anomalous performance value is higher, the port cost of described port is then higher.For the error rate, when the error rate of port is 10%, the port cost of described port can be set to: the normal port cost of (1+10%) *, when the error rate of port is 50%, the port cost of described port can be set to: the normal port cost of (1+50%) *.In actual applications, anomalous performance value and the transformational relation corresponding to port cost can be made decision according to the network condition of reality.
Step S302: the port cost determining each port current according to the anomalous performance value of each added up port;
Particularly, determine that the port cost of each port current comprises according to the anomalous performance value of each added up port: the anomalous performance value that utilization is set up in advance and the transformational relation corresponding to port cost, determine the port cost corresponding to each port according to the anomalous performance value of each added up port.Here, if when anomalous performance value set up in advance and the transformational relation corresponding to port cost are the corresponding relation conversion table of anomalous performance value and port cost, directly by searching the anomalous performance value of each added up port, the port cost of described port can be obtained.
Step S303: according to the port cost of each port determined, selects an optimum link as active link in network topology.
Particularly, according to the port cost of each port determined, recalculate the expense of each link in network topology, to select an optimum link as active link.
So; by the method realizing STP pretection switch described in the embodiment of the present invention; when certain active link service damage is serious; when as there is a large amount of error code; can the performance state of the link of perception in time; timely enforcement STP pretection switch, to select an optimum link as active link in network topology.
Fig. 4 is the schematic flow sheet four that the embodiment of the present invention realizes the method for STP pretection switch, and as shown in Figure 4, the method that the embodiment of the present invention realizes STP pretection switch comprises:
Step S101: regularly send detection messages in the BFD session of the port-to-port created;
Step S102: when detection has certain Single port not receive the detection messages of Peer-Port, real-time informing STP carries out pretection switch;
Step S101 in the embodiment of the present invention three to step S102 can distinguish accordingly see the step S101 in embodiment one to step S102, be save length, repeat no more here.
Step S401: when detect have be used to indicate described software runtime environment write heartbeat register value do not change time, block all of the port.
In embodiments of the present invention, can in advance by indicating the heartbeat register of writing of the software runtime environment of STP to come regularly to detect STP Processing tasks state; When detect exist STP Processing tasks abnormal hang up or the abnormal conditions such as low memory time, described in write heartbeat register and stop writing heartbeat, the value writing heartbeat register namely stops change.Now, all of the port can be forbidden by the mode of blocking all of the port, to make described STP Ethernet Circle isolate from ethernet ring network, thus prevent broadcast storm from producing.
Fig. 5 is the composition structural representation one that the embodiment of the present invention realizes the device of STP pretection switch, and as shown in Figure 5, described device comprises the first sending module 501 and the second sending module 502; Wherein,
Described first sending module 501, the two-way converting for the regular port-to-port creating detects in BFD session and sends detection messages;
Described second sending module 502, for when detection has certain port not receive the detection messages of Peer-Port, sends STP pretection switch Indication message.
In embodiments of the present invention, as shown in Figure 6, described device also comprises identification module 503;
Described identification module 503, for when detection has certain port not receive the detection messages of Peer-Port, the link connected state identified between described port and Peer-Port is link failure.
In embodiments of the present invention, as shown in Figure 7, described device also comprises the 3rd sending module 504;
Described 3rd sending module 504, for when detect have described port accepts to the detection messages of Peer-Port time, transmission STP pretection switch Indication message.
In embodiments of the present invention, as shown in Figure 8, described device also comprises statistical module 505, determination module 506 and selects module 507;
Described statistical module 505, for adding up the anomalous performance value of each port;
Described determination module 506, for determining the port cost of each port current according to the anomalous performance value of each added up port;
Described selection module 507, for the port cost according to each port determined, selects an optimum link as active link in network topology.
In embodiments of the present invention, as shown in Figure 9, described device also comprises blocking module 508;
Described blocking module 508, for when detect have be used to indicate described software runtime environment write heartbeat register value do not change time, block all of the port.
In actual applications, described first sending module 501, second sending module 502, identification module 503, the 3rd sending module 504, statistical module 505, determination module 506, selection module 507 and blocking module 508 all can be realized the realizations such as central processing unit (CPU), microprocessor (MPU), digital signal processor (DSP) or field programmable gate array (FPGA) in the device of STP pretection switch by the embodiment of the present invention.
Between technical scheme described in the embodiment of the present invention, when not conflicting, can combination in any.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention.
Claims (10)
1. realize a method for Spanning-Tree Protocol STP pretection switch, it is characterized in that, described method also comprises:
Regularly detect in BFD session at the two-way converting of the port-to-port created and send detection messages;
When detection has certain port not receive the detection messages of Peer-Port, send STP pretection switch Indication message.
2. method according to claim 1, is characterized in that, when detection has certain port not receive the detection messages of Peer-Port, described method also comprises:
The link connected state identified between described port and Peer-Port is link failure.
3. method according to claim 2, is characterized in that, after the link connected state between the described port of described mark and Peer-Port is malfunction, described method also comprises:
When detect have described port accepts to the detection messages of Peer-Port time, transmission STP pretection switch Indication message.
4. the method according to any one of claims 1 to 3, is characterized in that, described method also comprises:
Add up the anomalous performance value of each port; The port cost of each port current is determined according to the anomalous performance value of each added up port; According to the port cost of each port determined, in network topology, select an optimum link as active link.
5. the method according to any one of claims 1 to 3, is characterized in that, described method also comprises:
When detect have be used to indicate described software runtime environment write heartbeat register value do not change time, block all of the port.
6. realize a device for Spanning-Tree Protocol STP pretection switch, it is characterized in that, described device comprises the first sending module and the second sending module; Wherein,
Described first sending module, the two-way converting for the regular port-to-port creating detects in BFD session and sends detection messages;
Described second sending module, for when detection has certain port not receive the detection messages of Peer-Port, sends STP pretection switch Indication message.
7. device according to claim 6, is characterized in that, described device also comprises identification module;
Described identification module, for when detection has certain port not receive the detection messages of Peer-Port, the link connected state identified between described port and Peer-Port is link failure.
8. device according to claim 7, is characterized in that, described device also comprises the 3rd sending module;
Described 3rd sending module, for when detect have described port accepts to the detection messages of Peer-Port time, transmission STP pretection switch Indication message.
9. the device according to any one of claim 6 to 8, is characterized in that, described device also comprises statistical module, determination module and selection module;
Described statistical module, for adding up the anomalous performance value of each port;
Described determination module, for determining the port cost of each port current according to the anomalous performance value of each added up port;
Described selection module, for the port cost according to each port determined, selects an optimum link as active link in network topology.
10. the device according to any one of claim 6 to 8, is characterized in that, described device also comprises blocking module;
Described blocking module, for when detect have be used to indicate described software runtime environment write heartbeat register value do not change time, block all of the port.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410571022.3A CN105530113A (en) | 2014-10-23 | 2014-10-23 | Method and device for realizing protection switching of spanning tree protocol |
| PCT/CN2015/072170 WO2016061943A1 (en) | 2014-10-23 | 2015-02-03 | Method and apparatus for implementing spanning tree protocol protection switching, and computer storage medium |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410571022.3A CN105530113A (en) | 2014-10-23 | 2014-10-23 | Method and device for realizing protection switching of spanning tree protocol |
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| CN105530113A true CN105530113A (en) | 2016-04-27 |
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| CN201410571022.3A Withdrawn CN105530113A (en) | 2014-10-23 | 2014-10-23 | Method and device for realizing protection switching of spanning tree protocol |
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| WO (1) | WO2016061943A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111010319A (en) * | 2019-12-20 | 2020-04-14 | 锐捷网络股份有限公司 | VSF-based link detection method and device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110808873B (en) * | 2019-10-21 | 2022-02-22 | 锐捷网络股份有限公司 | Method and device for detecting link failure |
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| CN101043433A (en) * | 2006-06-24 | 2007-09-26 | 华为技术有限公司 | Method for aging MAC address learning list of bridge mode resilient packet ring |
| CN101083625A (en) * | 2007-07-13 | 2007-12-05 | 华为技术有限公司 | Method and apparatus for expediting link convergence |
| CN101340346A (en) * | 2008-08-11 | 2009-01-07 | 中兴通讯股份有限公司 | Ring control method and apparatus of Ethernet looped network system |
| US20130016606A1 (en) * | 2011-07-12 | 2013-01-17 | Tellabs San Jose, Inc. | Methods and apparatus for improving network communication using ethernet switching protection |
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- 2014-10-23 CN CN201410571022.3A patent/CN105530113A/en not_active Withdrawn
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| CN101043433A (en) * | 2006-06-24 | 2007-09-26 | 华为技术有限公司 | Method for aging MAC address learning list of bridge mode resilient packet ring |
| CN101083625A (en) * | 2007-07-13 | 2007-12-05 | 华为技术有限公司 | Method and apparatus for expediting link convergence |
| CN101340346A (en) * | 2008-08-11 | 2009-01-07 | 中兴通讯股份有限公司 | Ring control method and apparatus of Ethernet looped network system |
| US20130016606A1 (en) * | 2011-07-12 | 2013-01-17 | Tellabs San Jose, Inc. | Methods and apparatus for improving network communication using ethernet switching protection |
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| WO2016061943A1 (en) | 2016-04-28 |
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