CN101064632A - Method and system for protecting Ethernet network loop - Google Patents
Method and system for protecting Ethernet network loop Download PDFInfo
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- CN101064632A CN101064632A CNA2006100761582A CN200610076158A CN101064632A CN 101064632 A CN101064632 A CN 101064632A CN A2006100761582 A CNA2006100761582 A CN A2006100761582A CN 200610076158 A CN200610076158 A CN 200610076158A CN 101064632 A CN101064632 A CN 101064632A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/42—Loop networks
- H04L12/437—Ring fault isolation or reconfiguration
Abstract
The invention discloses a protection method of ethernet network circulation circuit, said ethernet network circulation circuit includes at least one ethernet network nodes, and at least one region, each of regions includes at least one work chains and at least one protection chains, said region includes at least one redundancy managers, every work node of said work chain informs other ethernet network nodes the multiple broadcasting information and updates said multiple broadcasting information table based on said multiple broadcasting information. The invention also discloses a protection system of ethernet network circulation circuit. Adopting the invention can shorten the resuming time of fault f dynamic multiple broadcasting operation from second to millisecond, and shortens the protection time.
Description
Technical field
The present invention relates to a kind of guard method of Ethernet Circle, the guard method of Ethernet Circle under especially a kind of multicast service, and with the protection system of the corresponding Ethernet Circle of this method.
Background technology
At present, the application of Ethernet (Ethernet) has covered the various aspects of Access Network, metropolitan area network even backbone network.But continuous development along with the wideband data network; original metropolitan area systems face based on Ethernet huge challenge; the existing network architecture can not provide the means of the service protection with carrier-class; and, must provide professional protection and recovery by reliable measure for because the network that optical fiber and equipment fault cause interrupts.From existing network technology, adopt structure that effective protection can be provided user's business based on ethernet ring network.
Simultaneously, the continuous development of wideband multimedia network makes various broadband networks application emerge in an endless stream.Broadbands such as IPTV, video conference, data and data distribution, multimedia remote education are used all the bearing capacity that has the wideband multimedia network now have been proposed challenge.The legacy network that adopts unicast technique (Unicast) to make up can't satisfy the requirement that emerging broadband network is applied in bandwidth and network service quality aspect.Multicast (Multicast also claims multi-address broadcast or IP multicast) technology is that a kind of one or more main frame of permission (multicast source) sends the TCP/IP network technology of single packet to multiple host.The multicast service that uses multicasting technology to transmit has been widely used in the broadband network application at present.
The kinds of protect method is arranged, wherein Ethernet Circle protection (Ethernet Ring Protection on the Ethernet Circle; ERP) agreement is one and in the Ethernet Circle topological structure link is carried out quick fault testing and faulty link carried out 2 layer protocol guard methods of fast quick-recovery.
Utilize ether draping realization to be set at 50 milliseconds usually, promptly still all will reach above-mentioned requirements for multicast service for unicast service at the service protection time that link or equipment fault recover (failover).Utilize above-mentioned Ethernet Circle protection agreement to be issued to above-mentioned requirements at present, but, adopt Ethernet Circle protection agreement still can't satisfy the requirement of above-mentioned failure recovery time for multicast service in unicast case.
Summary of the invention
Therefore, main purpose of the present invention is to provide a kind of guard method of Ethernet Circle, by adopting this method, makes that the failure recovery time for the multicast service of ether online operation can reach user's acceptable degree.
For achieving the above object; technical scheme of the present invention specifically is achieved in that a kind of guard method of Ethernet Circle; at least one ethernet node of above-mentioned Ethernet ring route constitutes; on above-mentioned Ethernet Circle, comprise at least one territory; each above-mentioned territory comprises at least one active link and at least one protection link; above-mentioned each territory comprises at least one Redundancy Management person, and the method includes the steps of:
(1) each working node of active link is notified to other ethernet nodes in the above-mentioned territory with its multicast information in the above-mentioned territory;
(2) each ethernet node in the above-mentioned territory receives the multicast information of above-mentioned working node and upgrades the multicast information table of above-mentioned ethernet node according to above-mentioned multicast information.
In step (1), each working node of active link is given other ethernet nodes in the above-mentioned territory with its multicast information synchronization notice in the above-mentioned territory.
In step (1), each working node of active link is by BPDU (Bridge Protocol DataUnit in the above-mentioned territory; BPDU) its multicast information synchronization notice is given other ethernet nodes in the above-mentioned territory.
Each working node of active link sends the failure recovery time of the interval of adjacent BPDU less than Ethernet Circle in the above-mentioned territory.
In step (2), each ethernet node in the above-mentioned territory receive above-mentioned working node by BPDU notice multicast information and upgrade the multicast information table of above-mentioned ethernet node according to above-mentioned multicast information.
Multicast information in the above-mentioned BPDU comprises at least one information in the multicast group id of VLAN group id, Ethernet Circle protection of ethernet node identifier, domain name, Ethernet Circle protection.
In step (1), each working node of active link is notified to other ethernet nodes in the above-mentioned territory by polling mode or interrupt mode with its multicast information in the above-mentioned territory.
In step (1), other ethernet nodes in the above-mentioned territory are the working node of active link or the protection node of protection link.
The present invention also proposes a kind of protection system of Ethernet Circle, at least one ethernet node of above-mentioned Ethernet ring route constitutes, on above-mentioned Ethernet Circle, comprise at least one territory, each above-mentioned territory comprises at least one active link and at least one protection link, above-mentioned each territory comprises at least one Redundancy Management person, above-mentioned Ethernet Circle also comprises at least one transmitting element and at least one receiving element, and above-mentioned transmitting element sends to other ethernet nodes in the above-mentioned territory with the multicast information of each working node of active link in the above-mentioned territory; Above-mentioned receiving element receives the multicast information of above-mentioned transmitting element transmission and upgrades the multicast information table of ethernet node in the above-mentioned territory according to above-mentioned multicast information.
Above-mentioned transmitting element is arranged on the working node of above-mentioned territory active link, and above-mentioned receiving element is arranged on the ethernet node in above-mentioned territory.
As seen, the guard method of a kind of Ethernet Circle provided by the present invention and system have following advantage and characteristics:
(1) method of the present invention can break down at active link and after preceding or active link breaks down the multicast information of active link is notified to the protection link; in case link occurs fault; thereby the protection link just can be learnt the operation of the multicast information bearer service bag of active link at short notice; and then the recovery time when the dynamic multicast business broken down shorten to a millisecond magnitude from second-time, shortened guard time.
(2) method of the present invention is replenishing of existing Ethernet Loop Protection agreement ERP, and the inventive method need not existing equipment is changed, so cost is extremely low.
Description of drawings
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described in further detail, wherein:
Fig. 1 is the schematic diagram of Ethernet Circle protection agreement ERP.
Fig. 2 is the initial condition schematic diagram that adopts the Ethernet Circle of Ethernet Circle protection agreement ERP.
Fig. 3 is the normal condition schematic diagram that adopts the Ethernet Circle of Ethernet Circle protection agreement ERP.
Fig. 4 is when adopting Ethernet Circle to protect the Ethernet Circle of agreement ERP to break down, the view that adopts the inventive method to protect.
Fig. 5 adopts the Ethernet Circle of Ethernet Circle protection agreement ERP to recover the normal condition schematic diagram again.
Embodiment
Fig. 1 is the schematic diagram of Ethernet Circle protection agreement ERP.Ethernet node NE1～NE7 among Fig. 1 has formed an Ethernet Circle physically, can comprise a plurality of territories (domain) in logic on the above-mentioned Ethernet Circle physically, and each territory comprises an active link and a protection link again.For example in territory shown in Figure 1, ethernet node RM A, NE2, NE3, NE4, NE5 have formed an active link, shown in the solid line among Fig. 1; And NE1, NE7, NE6 have formed a protection link, shown in the dotted line among Fig. 1.A node on this territory is designated as Redundancy Management person (RedundancyManager) RM A.Other nodes on Ethernet Circle then are designated as common switching node.
The node of a common multicast source (Multicast Source) on a territory sends business information, and has a plurality of VLANs (Virtual Local Area Network in a territory usually; VLAN), comprise a plurality of multicast groups (Multicast Group) in each VLAN usually again.
RM A handles the control information of ERP agreement, safeguards active link and the information of protecting link on this territory, and for example which node is a working node on this territory, and which node is the protection node, and whether working node breaks down and information such as interruption.In addition, the RM node has two ports on the loop at place, above-mentioned territory, and one of them port is configured to main port (Primary Port by RM; P), another port is configured to less important port (Secondary Prot by RM; S).
In the territory under Redundancy Management person RM, the non-ERP control information at all in the multicast group under the VLAN in this territory locks (Block) with less important port, shown in the dashed circle below the RM among Fig. 1.Like this, Redundancy Management person RM just effectively isolates main port P and less important port S, thereby avoids forming on Ethernet Circle a loop.Although lock; but the control information of ERP still can send or receive by less important port; like this; existing business packet on active link (Traffic Package) is in operation; control information is also arranged in operation simultaneously; on the protection link, then do not have the business packet operation in this territory, and have only control information in operation.
Fig. 2 is the initial condition schematic diagram that adopts the Ethernet Circle of Ethernet Circle protection agreement ERP.The right side is a multicast source among Fig. 2; before above-mentioned multicast source releases news by ethernet ring network; all ethernet nodes in the territory relevant with this multicast source; the multicast information table that comprises active link node and protection link nodes all is empty, and promptly the multicast information table of NE1～NE7, RMA all is empty.
Fig. 3 is the normal condition schematic diagram that adopts the Ethernet Circle of Ethernet Circle protection agreement ERP.Above-mentioned multicast source is by ethernet ring network all node issuing service information in above-mentioned territory.Node on the active link in the above-mentioned territory can obtain multicast information from the business information of multicast source issue, write then in the multicast information table of this active link node, that is to say, RM A, NE2, NE3, NE4, NE5 obtain multicast information respectively from the business information of multicast source issue, write in the multicast information table separately again.And the node on the protection link in the above-mentioned territory makes these protection nodes can not handle the business information of multicast source because less important port is locked, and therefore, the multicast information table of NE1, NE7, NE6 still is empty.
Fig. 4 is when adopting Ethernet Circle to protect the Ethernet Circle of agreement ERP to break down, the view that adopts the inventive method to protect.Solid line circle in Fig. 4 represents that Ethernet Circle breaks down herein; after RM learns link occurs fault by fault detection mechanisms such as interruption or polls; just original fixed less important port S is opened, make business packet also can on original protection link, move.
Then, each working node NE2, NE3 of active link, NE4, NE5, RMA are notified to other ethernet nodes in the above-mentioned territory with the multicast information in its multicast information table, and so-called other ethernet nodes had both comprised working node, also comprised the protection node.The multicast information that above-mentioned working node sends belongs to control information.Usually, each working node of active link can be notified to other ethernet nodes in the above-mentioned territory with its multicast information by BPDU BPDU.Multicast information among the BPDU BPDU comprises the VLAN group id of ethernet node identifier, domain name, Ethernet Circle protection, the multicast group id (for simplicity, only having marked the multicast group id among Fig. 3-Fig. 5) of Ethernet Circle protection.
The ethernet node identifier shows this multicast information from which working node sends, if the ethernet node identifier information among the BPDU BPDU that an ethernet node in the above-mentioned territory receives is different with the node identifier of this ethernet node itself, then this ethernet node receives the multicast information among the above-mentioned BPDU BPDU.If the ethernet node identifier information among the BPDU BPDU that an ethernet node in the above-mentioned territory receives is identical with the node identifier of this ethernet node itself, then the multicast information among this BPDU is abandoned.Can avoid like this repeating receiving.Domain name shows working node and the residing territory of protection node, and the VLAN group id of Ethernet Circle protection shows to exist the multicast group id of which VLAN, Ethernet Circle protection to show to comprise which multicast group in each VLAN in the above-mentioned territory.Each multicast group has at least one port.
After each ethernet node in the territory receives the multicast information among the BPDU BPDU,, upgrade the multicast information table of this ethernet node self according to the content of this multicast information.
The process that each working node of active link sends its multicast information is dynamic, until each uses the multicast information of the ethernet node of ERP agreement all to be tending towards identical in this territory, that is to say, realized in this territory the ethernet node that each uses the ERP agreement multicast information synchronously.Each working node of active link sends between two adjacent BPDU BPDU has certain time interval, this interval should be lower than the desired failure recovery time of Ethernet Circle at least, be generally 50 milliseconds, with the multicast information that can guarantee above-mentioned ethernet node synchronously.
Fig. 5 adopts the Ethernet Circle of Ethernet Circle protection agreement ERP to recover the normal condition schematic diagram again.When the multicast information of all nodes in the above-mentioned territory all by after synchronously; the protection link becomes new active link among the figure, and active link becomes new protection link, that is to say; RMA, NE1, NE7, NE6, NE5 are new working node, and NE2, NE3, NE4 are new protection node.Multicast users can obtain the business information of multicast source by new active link.The RM node reconfigures main port P and less important port S on above-mentioned territory, shown in the dashed circle among Fig. 5.
What the advice method of multicast information adopted in the foregoing description is interrupt mode.Except interrupt mode, can also adopt other modes, for example polling mode.The difference of interrupt mode and polling mode be the former be after link failure takes place with active link on the multicast information of working node send to protection node on the protection link, and the latter be before link failure takes place just with active link on the multicast information of working node send to the protection node of protecting on the link.
In addition; Fig. 1 has also shown the embodiment of the protection system of Ethernet Circle of the present invention; ethernet node NE1～NE7 among Fig. 1 has formed an Ethernet Circle physically; can comprise a plurality of territories (domain) in logic on the above-mentioned Ethernet Circle physically, each territory comprises an active link and a protection link again.For example in territory shown in Figure 1, ethernet node RM A, NE2, NE3, NE4, NE5 have formed an active link, shown in the solid line among Fig. 1; And NE1, NE7, NE6 have formed a protection link, shown in the dotted line among Fig. 1.A node on this territory is designated as Redundancy Management person (Redundancy Manager) RMA.Other nodes on Ethernet Circle then are designated as common switching node.
Ethernet Circle comprises 5 transmitting elements and 8 receiving elements, these 5 transmitting elements lay respectively on the working node RM A, NE2, NE3, NE4, NE5 of active link in the above-mentioned territory, and the multicast information of working node RM A, NE2, NE3, NE4, NE5 are sent to other ethernet nodes in the above-mentioned territory respectively; Above-mentioned 8 transmitting elements lay respectively on ethernet node RMA, the NE1～NE7 in the above-mentioned territory, and above-mentioned receiving element receives multicast information that above-mentioned transmitting element sends and the multicast information table that upgrades ethernet node in the above-mentioned territory according to above-mentioned multicast information.
As seen from the above-described embodiment; method of the present invention can break down at active link and after preceding or active link breaks down the multicast information of active link is notified to the protection link; in case connecting the road breaks down; thereby the protection link just can be learnt the operation of the multicast information bearer service bag of active link at short notice; and then the recovery time when the dynamic multicast business broken down shorten to a millisecond magnitude from second-time, shortened guard time.And because method of the present invention is replenishing of existing Ethernet Loop Protection agreement ERP, the inventive method need not existing equipment is changed, so cost is extremely low.
Claims (11)
1. the guard method of an Ethernet Circle; at least one ethernet node of above-mentioned Ethernet ring route constitutes; on above-mentioned Ethernet Circle, comprise at least one territory; each above-mentioned territory comprises at least one active link and at least one protection link; above-mentioned each territory comprises at least one Redundancy Management person, it is characterized in that the method includes the steps of:
(1) each working node of active link is notified to other ethernet nodes in the above-mentioned territory with its multicast information in the above-mentioned territory;
(2) each ethernet node in the above-mentioned territory receives the multicast information of above-mentioned working node and upgrades the multicast information table of above-mentioned ethernet node according to above-mentioned multicast information.
2. the guard method of Ethernet Circle as claimed in claim 1 is characterized in that: in step (1), each working node of active link is given other ethernet nodes in the above-mentioned territory with its multicast information synchronization notice in the above-mentioned territory.
3. the guard method of Ethernet Circle as claimed in claim 1; it is characterized in that: in step (1), each working node of active link is given other ethernet nodes in the above-mentioned territory by BPDU with its multicast information synchronization notice in the above-mentioned territory.
4. the guard method of Ethernet Circle as claimed in claim 3 is characterized in that: each working node of active link sends the failure recovery time of the interval of adjacent BPDU less than Ethernet Circle in the above-mentioned territory.
5. the guard method of Ethernet Circle as claimed in claim 1; it is characterized in that: in step (2), each ethernet node in the above-mentioned territory receive above-mentioned working node by BPDU notice multicast information and upgrade the multicast information table of above-mentioned ethernet node according to above-mentioned multicast information.
6. as the guard method of claim 3 or 5 described Ethernet Circles, it is characterized in that: the multicast information in the above-mentioned BPDU comprises at least one information in the multicast group id of VLAN group id, Ethernet Circle protection of ethernet node identifier, domain name, Ethernet Circle protection.
7. the guard method of Ethernet Circle as claimed in claim 1; it is characterized in that: in step (1), each working node of active link is notified to other ethernet nodes in the above-mentioned territory by polling mode or interrupt mode with its multicast information in the above-mentioned territory.
8. as the guard method of arbitrary described Ethernet Circle in the claim 1,2,3 or 7, it is characterized in that: in step (1), other ethernet nodes in the above-mentioned territory are the working node of active link or the protection node of protection link.
9. the protection system of an Ethernet Circle, at least one ethernet node of above-mentioned Ethernet ring route constitutes, on above-mentioned Ethernet Circle, comprise at least one territory, each above-mentioned territory comprises at least one active link and at least one protection link, above-mentioned each territory comprises at least one Redundancy Management person, it is characterized in that, above-mentioned Ethernet Circle also comprises at least one transmitting element and at least one receiving element, and above-mentioned transmitting element sends to other ethernet nodes in the above-mentioned territory with the multicast information of each working node of active link in the above-mentioned territory; Above-mentioned receiving element receives the multicast information of above-mentioned transmitting element transmission and upgrades the multicast information table of ethernet node in the above-mentioned territory according to above-mentioned multicast information.
10. the protection system of Ethernet Circle as claimed in claim 9, it is characterized in that: above-mentioned transmitting element is arranged on the working node of above-mentioned territory active link.
11. the protection system of Ethernet Circle as claimed in claim 9 is characterized in that: above-mentioned receiving element is arranged on the ethernet node in above-mentioned territory.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100761582A CN101064632A (en) | 2006-04-28 | 2006-04-28 | Method and system for protecting Ethernet network loop |
| PCT/EP2007/054190 WO2007125111A1 (en) | 2006-04-28 | 2007-04-27 | A method and system for the protection of ethernet rings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100761582A CN101064632A (en) | 2006-04-28 | 2006-04-28 | Method and system for protecting Ethernet network loop |
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| CN101064632A true CN101064632A (en) | 2007-10-31 |
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| CNA2006100761582A Pending CN101064632A (en) | 2006-04-28 | 2006-04-28 | Method and system for protecting Ethernet network loop |
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| CN (1) | CN101064632A (en) |
| WO (1) | WO2007125111A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009111954A1 (en) * | 2008-03-10 | 2009-09-17 | 中兴通讯股份有限公司 | Method and system for preventing network storm presenting in an ether multi-rings network |
| CN101483573B (en) * | 2009-02-09 | 2011-05-11 | 杭州华三通信技术有限公司 | Method and network node for GVRP dynamic learning |
| CN101707538B (en) * | 2009-11-25 | 2011-09-14 | 烽火通信科技股份有限公司 | Method for detecting and automatically recovering Ethernet loopback |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100968939B1 (en) * | 2007-12-12 | 2010-07-14 | 한국전자통신연구원 | Method and apparatus for protection switching of ring network |
| CN106941373B (en) * | 2017-03-21 | 2019-09-17 | 烽火通信科技股份有限公司 | A kind of device and method for realizing broadcasting service protection in optical transfer network |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6680912B1 (en) * | 2000-03-03 | 2004-01-20 | Luminous Networks, Inc. | Selecting a routing direction in a communications network using a cost metric |
| US20030031126A1 (en) * | 2001-03-12 | 2003-02-13 | Mayweather Derek T. | Bandwidth reservation reuse in dynamically allocated ring protection and restoration technique |
| WO2003062842A1 (en) * | 2002-01-23 | 2003-07-31 | Appian Communications, Inc. | Managing virtual network architectures |
| US7778162B2 (en) * | 2002-11-06 | 2010-08-17 | Wuhan Fiberhome Networks Co. Ltd. | Multiple service ring of N-ringlet structure based on multiple FE, GE and 10GE |
| US6928050B2 (en) * | 2003-05-06 | 2005-08-09 | Overture Networks, Inc. | Protected switching ring |
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2006
- 2006-04-28 CN CNA2006100761582A patent/CN101064632A/en active Pending
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- 2007-04-27 WO PCT/EP2007/054190 patent/WO2007125111A1/en active Application Filing
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009111954A1 (en) * | 2008-03-10 | 2009-09-17 | 中兴通讯股份有限公司 | Method and system for preventing network storm presenting in an ether multi-rings network |
| US8565072B2 (en) | 2008-03-10 | 2013-10-22 | Zte Corporation | Method and a system for preventing a network storm from presenting in a multi-ring ethernet |
| CN101483573B (en) * | 2009-02-09 | 2011-05-11 | 杭州华三通信技术有限公司 | Method and network node for GVRP dynamic learning |
| CN101707538B (en) * | 2009-11-25 | 2011-09-14 | 烽火通信科技股份有限公司 | Method for detecting and automatically recovering Ethernet loopback |
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| WO2007125111A1 (en) | 2007-11-08 |
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