CN105763373A - Flooding message forwarding method and device - Google Patents
Flooding message forwarding method and device Download PDFInfo
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- CN105763373A CN105763373A CN201610122343.4A CN201610122343A CN105763373A CN 105763373 A CN105763373 A CN 105763373A CN 201610122343 A CN201610122343 A CN 201610122343A CN 105763373 A CN105763373 A CN 105763373A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/32—Flooding
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/42—Loop networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/08—Configuration management of networks or network elements
- H04L41/0803—Configuration setting
- H04L41/0823—Configuration setting characterised by the purposes of a change of settings, e.g. optimising configuration for enhancing reliability
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/34—Source routing
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- Computer Networks & Wireless Communication (AREA)
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Abstract
The invention provides a flooding message forwarding method and device, and the method is used at a source station in an RPR loop network. The method comprises the steps: obtaining first survival time, wherein the first survival time is reduced to be zero when a first flooding message with the first survival time is transmitted to a former station of the source station along the RPR loop network; and carrying out the forwarding of the first flooding message along the RPR loop network. According to the invention, the method can reduce the waste of resources of the RPR loop network to the greatest extent, and reduces the processing burden of the station.
Description
Technical field
The application relates to network communication technology field, particularly relates to one and floods message forwarding method and device.
Background technology
RPR (ResilientPacketRing, RPR) is a kind of novel MAC (MediaAccessControl, media interviews control) agreement, adopts reverse twin nuclei, and flow forwards between sites along looped network.RPR looped network adopts the pass-through mode that Source Site is peeled off when processing and flooding message, namely from ring Source Site, finally peels off from Source Site again.Wherein, there is the wasting of resources from a upper website of Source Site to the repeating process of Source Site.
Summary of the invention
In view of this, the application provides one to flood message forwarding method and device.
Specifically, the application is achieved by the following technical solution:
The application provides one to flood message forwarding method, and described method is applied on the Source Site in RPR looped network, and described Source Site is that the message that floods enters the first website of RPR looped network, and the method includes:
Obtain the first life span, described first life span for make to carry the first of described first life span flood message be forwarded to the upper website of described Source Site along described RPR looped network time described in the first life span be kept to zero；
Described first is forwarded to flood message along described RPR looped network.
The application also provides for one and floods apparatus for forwarding message, and described device is applied on the Source Site in RPR looped network, and described Source Site is that the message that floods enters the first website of RPR looped network, and this device includes:
Acquiring unit, is used for obtaining the first life span, described first life span for make to carry the first of described first life span flood message be forwarded to the upper website of described Source Site along described RPR looped network time described in the first life span be kept to zero；
Retransmission unit, for forwarding described first to flood message along described RPR looped network.
Be can be seen that by above description, the application is by precisely determining the life span of the message that floods, the message life span when arriving a upper website of Source Site that makes to flood is zero, thus stopping forwarding the message that floods to Source Site, reduce the wasting of resources of RPR looped network to greatest extent, alleviate the processing load of website.
Accompanying drawing explanation
Fig. 1 is the RPR looped network schematic diagram shown in the application one exemplary embodiment；
Fig. 2 is the forward-path schematic diagram of the existing message that floods shown in the application one exemplary embodiment；
Fig. 3 is that the one shown in the application one exemplary embodiment floods message forwarding method flow chart；
Fig. 4 is the forward-path schematic diagram of the message that floods shown in the application one exemplary embodiment；
Fig. 5 is the underlying hardware structural representation of a kind of apparatus for forwarding message place equipment that floods shown in the application one exemplary embodiment；
Fig. 6 is the structural representation of a kind of apparatus for forwarding message that floods shown in the application one exemplary embodiment.
Detailed description of the invention
Here in detail exemplary embodiment being illustrated, its example representation is in the accompanying drawings.When as explained below relates to accompanying drawing, unless otherwise indicated, the same numbers in different accompanying drawings represents same or analogous key element.Embodiment described in following exemplary embodiment does not represent all embodiments consistent with the application.On the contrary, they only with in appended claims describe in detail, the application some in the example of consistent apparatus and method.
It is only merely for the purpose describing specific embodiment at term used in this application, and is not intended to be limiting the application." one ", " described " and " being somebody's turn to do " of the singulative used in the application and appended claims is also intended to include most form, unless context clearly shows that other implications.It is also understood that term "and/or" used herein refers to and comprises any or all of one or more project of listing being associated and be likely to combination.
Although should be appreciated that and be likely to adopt term first, second, third, etc. to describe various information in the application, but these information should not necessarily be limited by these terms.These terms are only used for being distinguished from each other out same type of information.Such as, when without departing from the application scope, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information.Depend on linguistic context, word as used in this " if " can be construed to " ... time " or " when ... " or " in response to determining ".
A upper website etc. of Source Site (the such as Source Site, intermediate stations) can be switching equipment it should be noted that website described in the examples below, for instance switch, router etc..
RPR looped network is for broadcasting packet, multicast message, unknown unicast message etc. flood message adopt Source Site peel off pass-through mode, namely message is flooded from ring Source Site, ring and lower ring is crossed through intermediate stations, finally return to Source Site peel off, visible, the message that floods sends from Source Site and is forwarded to a upper website of described Source Site through intermediate stations, the described message that floods has had stepped through each website in this RPR looped network, the wasting of resources is there is in the message that therefore floods from a upper website of Source Site to the repeating process of Source Site, especially message is flooded (such as to what periodically send, RPR protocol massages), the wasting of resources of its generation is very important.
Referring to Fig. 1, for RPR looped network schematic diagram.This looped network is made up of 5 websites (StationA～StationE), and wherein, clockwise loop is 0 ring, also known as outer shroud；Anticlockwise loop is 1 ring, also known as internal ring.nullAssume，Flood message from ring 0 ring of StationA，Owing to StationA cannot station number in perception RPR looped network，When flooding message to the forwarding of RPR looped network，Generally at the TTL (TimeToLive of the message that floods，Life span) field filling 255 (the maximum station number that this numerical value specifies more than RPR agreement)，All websites (including StationA) to ensure RPR looped network all can receive the message that floods，And then peel off, at StationA, the message that floods，Message forwarding path is as shown in Figure 2，The message that floods forwards along StationA → StationB → StationC → StationD → StationE → StationA，Owing to StationA is the upper ring station point of message of flooding，It processes without again obtaining this message that floods，So，The wasting of resources is there is in this message that floods from the repeating process of StationE → StationA，And increase the processing load of StationE and StationA.
For the problems referred to above, the embodiment of the present application proposes one and floods message forwarding method, the method is precisely determined the life span of the message that floods by Source Site (the first website of the message that floods entrance RPR looped network), the message life span when arriving a upper website of Source Site that makes to flood is kept to zero, thus stopping forwarding the message that floods to Source Site.
Referring to Fig. 3, for the embodiment flow chart of a kind of message forwarding method that floods that the application provides, the Message processing process that floods is described by this embodiment.
Step 301, obtains the first life span, described first life span for make to carry the first of described first life span flood message be forwarded to the upper website of described Source Site along described RPR looped network time described in the first life span be kept to zero.
In one embodiment, can be forwarded along RPR looped network by Source Site and carry the second of the second life span message that floods and obtain the first life span, this second life span makes second message that floods be forwarded back to Source Site along RPR looped network, such as, can fill the second life span in the second ttl field flooding message is 255.
Each website in RPR looped network can according to the purpose MAC (MediaAccessControl of message, medium access control) Address Confirmation receive message for flooding message (such as, target MAC (Media Access Control) address is the message of FF-FF-FF-FF is broadcasting packet, purpose MAC is the message of multicast group address is multicast message etc.), the message that floods was taked ring and the operation of lower ring, meanwhile, when crossing ring, the life span of the message that floods is made decrement operations, relays to next website.
When Source Site receives and floods message, judge that whether the message that floods received is that second message that floods is forwarded back to this website along RPR looped network, the present embodiment provides a kind of determination methods, whether identical with the MAC Address of self it is specially the MAC Address that message carries that judges to flood, wherein, the MAC Address that the message that floods carries can for the source MAC of the message that floods, it is also possible to for carrying the MAC Address for uniquely identifying Source Site in other field of message that floods；The own MAC address of Source Site can be the bridge MAC of Source Site, it is also possible to for the MAC Address of Source Site upper port, this is owing to MAC Address has uniqueness, and therefore, the MAC Address of port can uniquely identify corresponding website.
When the MAC Address that the message that floods of Source Site reception carries is identical with the MAC Address of self, the message that floods that this reception is described is the message that floods that Source Site sends along RPR looped network, namely determine that the message that floods of reception is that described second message that floods is forwarded back to this website along RPR looped network, obtain the life span of the message that floods of this reception as the 3rd life span, the first life span is determined according to the second life span and the 3rd life span, specifically, the first life span is the second life span deducts the 3rd life span.Such as, initial setting up the second life span is 255, this second life span is carried and forwards this second to flood message at second message that floods along RPR looped network, simultaneously RPR looped network floods message often when a website forwards, life span subtracts one, when determining that the message that floods that Source Site receives is flood message along the second of PRP looped network forwarding, the life span obtaining the message that floods received is 251, then the first life span is 255-251=4.
In another embodiment, the first life span can be determined according to the real site number of RPR looped network.Specifically, obtain the station number of RPR looped network, and the described station number obtained is subtracted one.The station number of this RPR looped network can configure according to real site number, it is possible to automatically obtains.
Wherein, the method of the station number automatically obtaining RPR looped network is, the station number of RPR looped network can be obtained by the second life span and the 3rd life span, particularly as follows: add one again after deducting the 3rd life span by the second life span and obtain the station number of RPR looped network, its process is: Source Site forwards along RPR looped network carries the second of the second life span and flood message, this second life span makes second message that floods be forwarded back to Source Site along RPR looped network, such as, second life span more than looped network station number can be estimated.Second life span flooding message is made decrement operations by each website in RPR looped network in repeating process.When Source Site receives and floods message, and judge that the message that floods received is that second message that floods is forwarded back to this website (namely when the MAC Address that carries of the message that floods received is identical with the MAC Address of self) along RPR looped network, obtain the life span of the message that floods of this reception as the 3rd life span.Then station number is that the second life span deducts the 3rd life span and adds one.Such as, initial setting up the second life span is 255, this second life span is carried and forwards this second to flood message at second message that floods along RPR looped network, simultaneously RPR looped network floods message often when a website forwards, life span subtracts one, when determining that the message that floods that Source Site receives is flood message along the second of PRP looped network forwarding, the life span obtaining the message that floods received is 251, then in this RPR looped network, station number is 255-251+1=5, and namely current RPR looped network has 5 websites.
After the station number obtaining RPR looped network, the first life span is that station number subtracts one.Such as, station number is 5, then the first life span of the message that floods is 5-1=4.
Step 302, forwards described first to flood message along described RPR looped network.
After determining the first life span, the message that floods carrying the first life span is forwarded along RPR looped network, in looped network each website receive described first flood message and forward described first flood message time the first life span carried in message that floods described first make decrement operations, until this first floods message when being forwarded to the upper website of described Source Site, this first life span is decremented to zero, so that a upper website of described Source Site by this first flood message peel off, avoid the upper website of described Source Site and this first message that floods is sent to the wasting of resources that Source Site is caused.
Now still for Fig. 1, the repeating process of flood message is discussed in detail.
Assume, StationA fills 255 to StationB forwardings (generally as Source Site in the ttl field of the message that floods, owing to the life span flooding in message will not be changed in Source Site self, i.e. ttl value, the TTL flooding in message that therefore Source Site sends to next website is 255).
After StationB receives message, target MAC (Media Access Control) address according to message determines that this message is for the message that floods, and whether the MAC Address of the described message that judgement receives is identical with the MAC Address of self (such as, whether the source MAC in message that floods described in judgement is the bridge MAC Address of self), if identical, flood described in peeling off message, if difference, flood described in forwarding at subsequent time message, further, obtain the life span (255) of this message that floods, when flooding message described in forwarding, this life span is done the operation that subtracts, obtaining life span is 254, this life span (254) being filled into floods in message, forward to StationC.
In like manner, StationC receive described in flood after message, the life span of the message that floods described in change is 253, forwards to StationD；By that analogy, the message that floods described in continues on through StationD, StationE and is forwarded to StationA.
StationA floods after message described in receiving, the MAC Address whether MAC Address of message of judging to flood described in receiving is self is identical (such as, whether the source MAC in message that floods described in judgement is the bridge MAC Address of self), if identical, then flood described in obtaining the life span in message.Flood message after the forwarding through StationA → StationB → StationC → StationD → StationE → StationA, and the life span of the message that currently floods is 251.It is 255-251+1=5 that StationA calculates the station number of current RPR looped network, and namely current RPR looped network has 5 websites.StationA will flood message from the stripping of RPR looped network, and forward-path is referring to Fig. 2.
When StationA again sends as Source Site and floods message, subtracting one using the station number obtained as the life span of the message that floods, the life span of the message that namely currently floods is 5-1=4, forwards to StationB.
With the processing procedure of aforementioned intermediate stations, StationB, StationC, StationD forward after subtracting one to the life span of the message that floods.When the message that floods arrives StationE, the life span of message of flooding is 1, operation that life span is made to subtract one by StationE, life span vanishing, the message that then floods stops forwarding, and peels off from StationE, and forward-path is referring to Fig. 4, visible, this repeating process avoids StationE and floods message and the wasting of resources that causes to what StationA forwarded that StationA sends.
Corresponding with the embodiment of the aforementioned message forwarding method that floods, present invention also provides the embodiment of the apparatus for forwarding message that floods.
The embodiment of the apparatus for forwarding message that floods that the application provides can be applied on the Source Site in RPR looped network.Device embodiment can be realized by software, it is also possible to is realized by the mode of hardware or software and hardware combining.Implemented in software for example, as the device on a logical meaning, it is formed by computer program instructions corresponding in the processor run memory of its place equipment.Say from hardware view, as shown in Figure 5, a kind of hardware structure diagram for the apparatus for forwarding message place equipment that floods that the application provides, except the processor shown in Fig. 5 and except nonvolatile memory, in embodiment, the equipment at device place is generally according to the actual functional capability of this equipment, other hardware can also be included, this is repeated no more.
Refer to Fig. 6, for the structural representation of the apparatus for forwarding message that floods in one embodiment of the application.This apparatus for forwarding message that floods includes acquiring unit 601 and retransmission unit 602, wherein:
Acquiring unit 601, is used for obtaining the first life span, described first life span for make to carry the first of described first life span flood message be forwarded to the upper website of described Source Site along described RPR looped network time described in the first life span be kept to zero；
Retransmission unit 602, for forwarding described first to flood message along described RPR looped network.
Further, acquiring unit 601 obtains the process of the first life span and can be:
Described retransmission unit, is additionally operable to forward second to flood message along described RPR looped network, and described second message that floods carries the second life span, and described second life span makes described second message that floods be forwarded back to described Source Site along described RPR looped network.
Described acquiring unit, is additionally operable to obtain send second and floods the second life span that message carries.
Message judging unit, for judging that whether the message that floods received is that described second message that floods is forwarded back to this website along RPR looped network.
Described acquiring unit, is additionally operable to when the judged result of message judging unit is for being, obtains the life span of the message that floods received and it can be used as the 3rd life span；Described first life span is determined according to described second life span and described 3rd life span.
Concrete, described acquiring unit, deduct described 3rd life span by described second life span and obtain described first life span.
In another kind of embodiment, acquiring unit 601 obtains the process of the first life span and can also be:
Described acquiring unit, according to described second life span and described 3rd life span, it is thus achieved that station number, concrete, add a described station number of acquisition after deducting described 3rd life span by described second life span again.
Further, described acquiring unit subtracts one by described station number again and obtains described first life span.
In another kind of embodiment, described acquiring unit, for obtaining real site number according to described RPR looped network in locally configured station number.
Further,
Described acquiring unit, obtains the station number of described RPR looped network, subtracts one by described station number and obtains described first life span.
What in said apparatus, the function of unit and the process that realizes of effect specifically referred in said method corresponding step realizes process, does not repeat them here.
For device embodiment, owing to it corresponds essentially to embodiment of the method, so relevant part illustrates referring to the part of embodiment of the method.Device embodiment described above is merely schematic, the wherein said unit illustrated as separating component can be or may not be physically separate, the parts shown as unit can be or may not be physical location, namely may be located at a place, or can also be distributed on multiple NE.Some or all of module therein can be selected according to the actual needs to realize the purpose of the application scheme.Those of ordinary skill in the art, when not paying creative work, are namely appreciated that and implement.
The foregoing is only the preferred embodiment of the application, not in order to limit the application, all within spirit herein and principle, any amendment of making, equivalent replacements, improvement etc., should be included within the scope that the application protects.
Claims (12)
1. the message forwarding method that floods, it is characterised in that described method is applied on the Source Site in RPR looped network, described Source Site be flood message enter RPR looped network first website, the method includes:
Obtain the first life span, described first life span for make to carry the first of described first life span flood message be forwarded to the upper website of described Source Site along described RPR looped network time described in the first life span be kept to zero；
Described first is forwarded to flood message along described RPR looped network.
2. the method for claim 1, it is characterised in that the method for described acquisition the first life span includes:
Forwarding second to flood message along described RPR looped network, described second message that floods carries the second life span, and described second life span makes described second message that floods be forwarded back to described Source Site along described RPR looped network；
Judge that whether the message that floods received is that described second message that floods is forwarded back to this website along RPR looped network, if the determination result is YES, obtain the life span of the message that floods received and it can be used as the 3rd life span；
Described first life span is determined according to described second life span and described 3rd life span.
3. method as claimed in claim 2, it is characterised in that described determine described first life span according to described second life span and described 3rd life span, particularly as follows:
Deduct described 3rd life span by the second life span and obtain described first life span.
4. method as claimed in claim 2, it is characterised in that described determine described first life span according to described second life span and described 3rd life span, particularly as follows:
According to described second life span and described 3rd life span, it is thus achieved that station number；
Subtract one by described station number and obtain described first life span.
5. the method for claim 1, it is characterised in that the method for described acquisition the first life span includes:
Obtain the station number of described RPR looped network；
Subtract one by described station number and obtain described first life span.
6. method as claimed in claim 5, it is characterised in that the method for the station number of the described RPR looped network of described acquisition includes:
Real site number according to described RPR looped network is in locally configured described station number.
7. the apparatus for forwarding message that floods, it is characterised in that described device is applied on the Source Site in RPR looped network, described Source Site be flood message enter RPR looped network first website, this device includes:
Acquiring unit, is used for obtaining the first life span, described first life span for make to carry the first of described first life span flood message be forwarded to the upper website of described Source Site along described RPR looped network time described in the first life span be kept to zero；
Retransmission unit, for forwarding described first to flood message along described RPR looped network.
8. device as claimed in claim 7, it is characterised in that:
Described retransmission unit, is additionally operable to forward second to flood message along described RPR looped network, and described second message that floods carries the second life span, and described second life span makes described second message that floods be forwarded back to described Source Site along described RPR looped network；
Described acquiring unit, is additionally operable to obtain send second and floods the second life span that message carries；
Message judging unit, for judging that whether the message that floods received is that described second message that floods is forwarded back to this website along RPR looped network；
Described acquiring unit, is additionally operable to when the judged result of described message judging unit is for being, obtains the life span of the message that floods received and it can be used as the 3rd life span；Described first life span is determined according to described second life span and described 3rd life span.
9. device as claimed in claim 8, it is characterised in that:
Described acquiring unit, deducts described 3rd life span by described second life span and obtains described first life span.
10. device as claimed in claim 8, it is characterised in that:
Described acquiring unit, according to described second life span and described 3rd life span, it is thus achieved that station number；Subtract one by described station number and obtain described first life span.
11. device as claimed in claim 7, it is characterised in that:
Described acquiring unit, obtains the station number of described RPR looped network；Subtract one by described station number and obtain described first life span.
12. device as claimed in claim 11, it is characterised in that:
Described acquiring unit, for obtaining real site number according to described RPR looped network in locally configured station number.
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| CN201610122343.4A CN105763373A (en) | 2016-03-03 | 2016-03-03 | Flooding message forwarding method and device |
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| CN201610122343.4A CN105763373A (en) | 2016-03-03 | 2016-03-03 | Flooding message forwarding method and device |
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| CN110233765A (en) * | 2019-06-23 | 2019-09-13 | 何梓菁 | A kind of low time delay network dicing method and equipment |
| CN114465918A (en) * | 2022-02-24 | 2022-05-10 | 杭州中天微系统有限公司 | Message response method and device |
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Address after: 310052 Binjiang District Changhe Road, Zhejiang, China, No. 466, No. Applicant after: Xinhua three Technology Co., Ltd. Address before: 310052 Binjiang District Changhe Road, Zhejiang, China, No. 466, No. Applicant before: Huasan Communication Technology Co., Ltd. |
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Application publication date: 20160713 |