CN102014006B - Ethernet ring protection switching method for hybrid network - Google Patents
Ethernet ring protection switching method for hybrid network Download PDFInfo
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Abstract
The invention relates to an Ethernet ring protection switching method for a hybrid network. The method comprises the following steps: 1, establishing an Ethernet ring protection instance based on a virtual private network (VPN); and 2, controlling the mapping from VPN service to the Ethernet ring protection instance, wherein step 1 comprises the following concrete steps: 1.1, establishing the VPN service; 1.2, judging whether the established VPN service is Ethernet ring service of the control type, if not, not carrying out processing, and otherwise, establishing the Ethernet protection instance (including adding the configuration information of the Ethernet protection instance, establishing a ring port of the Ethernet ring instance, and establishing the mapping from a VPN service group to the instance; and 1.3, judging whether the configuration information of the Ethernet protection instance is successfully added, judging whether the ring port of the Ethernet ring instance is successfully established, and judging whether the established VPN service group is successfully mapped to the instance, if yes, judging that the Ethernet ring protection instance based on the VPN is successfully established.
Description
Technical field
The present invention relates to a kind of Ethernet ring protection reverse method of hybrid network, more particularly, in the method, introduced the control virtual private network service, many examples, logical topology, the concept in special-purpose control tunnel.
Background technology
Existing mixing Ethernet ring protection reverse method is mainly as follows:
1. based on physical topology---the physical rings topology protected switch;
2. based on physical port---physical port protection is switched;
3. single example---a physical port can only be on a ring example;
4. tunnel, bridge protocol data unit (BPDU Tunneling) transparent transmission agreement is controlled message.
There is respectively following shortcoming in above-mentioned existing method:
1. for physical topology, can not provide the protection of the logical topology of virtual private network service;
2. for physical port, can not provide the protection of logic port in the virtual private network service;
3. single example can not provide different virtual private network service groups is protected;
4. tunnel, bridge protocol data unit (BPDU Tunneling) transparent transmission agreement is controlled message, and the fringe node of hybrid network does not participate in looped network protection switching, causes protection to be switched when occuring, and professional generation is long to be interrupted.
Summary of the invention
The objective of the invention is to solve problem set forth above, provide based on VPN, many examples, virtual private network service group, the Ethernet ring protection reverse method of a kind of hybrid network of mixing control virtual private network service.
Technical scheme of the present invention is such:
A kind of Ethernet ring protection reverse method of hybrid network mainly comprises:
1) establishment is based on the Ethernet ring protection example of VPN, and step is as follows:
1.1) the establishment virtual private network service;
1.2) judge whether the virtual private network service that creates controls the ethernet ring network business of type, if not, then do not process, if, create Ethernet protection example, comprise the configuration information that adds Ethernet protection example, create the central port of ethernet ring network example, create the virtual private network service group to the mapping of example;
1.3) judge whether the configuration information of Ethernet protection example successfully adds, whether the central port of judging the ethernet ring network example successfully creates, judge and create the virtual private network service group to the whether successfully mapping of example, if so, then described Ethernet ring protection example based on VPN creates successfully;
2) the control virtual private network service is to the mapping of ethernet ring network example.
As preferably, described virtual private network service group is comprised of at least more than one mutually homeomorphous virtual private network service.
As preferably, described virtual private network service group mainly comprises to the mapping of Ethernet ring protection example:
1.3.1) create the virtual private network service group to the mapping of MSTP example;
1.3.2) create the virtual private network service group to the mapping of ERPS example;
As preferably, described virtual private network service group is as follows to the creation method of the mapping of MSTP example:
1.3.11) create the virtual private network service group to the mapping of MSTP example;
1.3.1.2) judge whether business belongs to MSTP example 0, if not, create unsuccessfully, if so, this business of deletion from the virtual private network service group of MSTP example;
1.3.1.3) this business is added in the service groups of current MSTP example, described virtual private network service group creates successfully to the mapping of Ethernet ring protection example.
As preferably, described virtual private network service group is as follows to the creation method of the mapping of ERPS example:
1.3.2.1) create the virtual private network service group to the mapping of ERPS example;
1.3.2.2) judge whether business belongs to MSTP example 0, if so, repeat above-mentioned 1.3.1.1) to 1.3.1.3), if not, search the example at current business place;
1.3.2.3) judge it is MSTP example or ERPS example, if the MSTP example then creates unsuccessfully, if the ERPS example is searched the port whether this professional port mates example;
1.3.2.4) if without identical port, then create unsuccessfully, if identical port is arranged, described virtual private network service group creates successfully to the mapping of Ethernet ring protection example.
As preferably, comprise that further virtual private network service arrives the deletion of Ethernet ring protection example mapping, comprises
3.1) delete the virtual private network service group to the mapping of MSTP example;
3.2) delete the virtual private network service group to the mapping of ERPS example.
As preferably, described virtual private network service group is as follows to the delet method of the mapping of MSTP example:
3.1.1) virtual private network service is to the mapping deletion of MSTP example;
3.1.2) in current MSTP example, should business delete;
3.1.3) this business is added in the MSTP example 0, deletion is finished.
As preferably, described virtual private network service group is as follows to the delet method of the mapping of ERPS example:
3.2.1) virtual private network service is to the mapping deletion of ERPS example;
3.2.2) search the ERPS example at place according to virtual private network service ID;
3.2.3) judge whether this business is mapped to a plurality of ERPS examples, if so, this business to be deleted from current ERPS example, deletion is finished; If not, this business is deleted from current ERPS example, then this business is added in the MSTP example 0.
As preferably; described control virtual private network service is to the mapping of Ethernet ring protection example; when creating ERPS control virtual switch instance (VSI), will create simultaneously the Ethernet ring protection example, finish the control virtual private network service to the mapping of ethernet ring network example.
Beneficial effect of the present invention is as follows:
1, based on VPN---the logic box to different virtual private network services forms, carry out the independent protective switching control;
2, many examples---at same physical port, according to different virtual private network service groups, can create a plurality of ring examples;
3, virtual private network service group---the virtual private network service with identity logic topology forms a group, can be mapped in one or more ring example;
4, mix the control virtual private network service---special-purpose hybrid network Ethernet ring protection switching control passage is provided, hybrid network ring example is protected switching control.
Description of drawings
Fig. 1 is based on the flow chart of establishment of the Ethernet ring protection example of VPN;
Fig. 2 creates the virtual private network service group to the flow chart of the mapping of example;
Fig. 3 is that the deletion virtual private network service is to the flow chart of Ethernet ring protection example mapping;
Fig. 4 is the schematic diagram of normal hybrid network protection switch status;
The schematic diagram of hybrid network protection switch status when Fig. 5 is PB central link fault;
Fig. 6 is the schematic diagram of tunnel failure between the hybrid network borde gateway network element.
Embodiment
Below in conjunction with accompanying drawing embodiments of the invention are further elaborated:
At first the english abbreviation in the specification is tabulated:
| English abbreviation | Specifically describe |
| APS | Automatic Protection Switching (APS) |
| DNF | Do Not Flush (not refreshing) |
| ERP | Ethernet Ring Protection (Ethernet ring protection) |
| ERPS | Ethernet Ring Protection Switching (Ethernet ring protection is switched) |
| FDB | Filtering Database (filtered data base) |
| MEL | Maintenance Entity Group Level (Maintenance Entity grade) |
| NR | No Request (not request) |
| R-APS | Ring APS (ring APS message) |
| RB | RPL Blocked (ring protection link obstructions) |
| RPL | Ring Protection Link (ring protection link) |
| RPL Owner | Ring Protection Link Owner (ring protection link owner) |
| SF | Signal Fail (signal fault) |
| SD | Signal Degrade (Signal Degrade) |
| WTR | Wait to Restore (Wait-to-Restore) |
| MA | Maintenance Association (safeguarding link) |
| MEP | Maintenance association End Point (safeguarding the link terminal) |
| MSTP | Multiple Spanning Tree Protocol (Multiple Spanning Tree Protocol) |
| VSI-ERP | ERP control VSI Ethernet ring protection control virtual switch instance |
| VSI | Vitual Switching Instance virtual switch instance |
| VPN | Virtual Private Network VPN |
| LAG | Link Aggregation link aggregation |
| LACP | Link Aggregation Control Protocol Link Aggregation Control Protocol |
| CE | Customer Element customer equipment |
| NE | The Network Element network equipment |
| MPLS | Multiple Protocol Label Switching multiprotocol label switching |
| English abbreviation | Specifically describe |
| PB | Provider Bridge |
| MoT | MPLS over Transport is based on the MPLS of transmission network |
| MoE | MPLS over Ethernet is based on the MPLS of Ethernet |
| BG | Broad Gate borde gateway |
| EoS | Ethernet over SDH is based on the Ethernet of synchronous digital hierarchy |
The Ethernet ring protection reverse method of a kind of hybrid network of the present invention mainly comprises:
As shown in Figure 1,
1) establishment is based on the Ethernet ring protection example of VPN, and step is as follows:
1.1) the establishment virtual private network service;
1.2) judge whether the virtual private network service that creates controls the ethernet ring network business of type, if not, then do not process, if, create Ethernet protection example, comprise the configuration information that adds Ethernet protection example, create the central port of ethernet ring network example, create the virtual private network service group to the mapping of example;
1.3) judge whether the configuration information of Ethernet protection example successfully adds, whether the central port of judging the ethernet ring network example successfully creates, judge and create the virtual private network service group to the whether successfully mapping of example, if so, then described Ethernet ring protection example based on VPN creates successfully;
2) the control virtual private network service is to the mapping of ethernet ring network example.
Described virtual private network service group is comprised of at least more than one mutually homeomorphous virtual private network service.
As shown in Figure 2, the virtual private network service group mainly comprises to the mapping of Ethernet ring protection example:
1.3.1) create the virtual private network service group to the mapping of MSTP example;
1.3.2) create the virtual private network service group to the mapping of ERPS example;
Described virtual private network service group is as follows to the creation method of the mapping of MSTP example:
1.3.1.1) create the virtual private network service group to the mapping of MSTP example;
1.3.1.2) judge whether business belongs to MSTP example 0, if not, create unsuccessfully, if so, this business of deletion from the virtual private network service group of MSTP example;
1.3.1.3) this business is added in the service groups of current MSTP example, described virtual private network service group creates successfully to the mapping of Ethernet ring protection example.
Described virtual private network service group is as follows to the creation method of the mapping of ERPS example:
1.3.2.1) create the virtual private network service group to the mapping of ERPS example;
1.3.2.2) judge whether business belongs to MSTP example 0, if so, repeat above-mentioned 1.3.1.1) to 1.3.1.3), if not, search the example at current business place;
1.3.2.3) judge it is MSTP example or ERPS example, if the MSTP example then creates unsuccessfully, if the ERPS example is searched the port whether this professional port mates example;
1.3.2.4) if without identical port, then create unsuccessfully, if identical port is arranged, described virtual private network service group creates successfully to the mapping of Ethernet ring protection example.
The present invention further comprises: virtual private network service as shown in Figure 3, comprises to the deletion of Ethernet ring protection example mapping
3.1) delete the virtual private network service group to the mapping of MSTP example;
3.2) delete the virtual private network service group to the mapping of ERPS example.
Described virtual private network service group is as follows to the delet method of the mapping of MSTP example:
3.1.1) virtual private network service is to the mapping deletion of MSTP example;
3.1.2) in current MSTP example, should business delete;
3.1.3) this business is added in the MSTP example 0, deletion is finished.
Described virtual private network service group is as follows to the delet method of the mapping of ERPS example:
3.2.1) virtual private network service is to the mapping deletion of ERPS example;
3.2.2) search the ERPS example at place according to virtual private network service ID;
3.2.3) judge whether this business is mapped to a plurality of ERPS examples, if so, this business to be deleted from current ERPS example, deletion is finished; If not, this business is deleted from current ERPS example, then this business is added in the MSTP example 0.
Described control virtual private network service when creating ERPS control virtual switch instance (VSI), will create the Ethernet ring protection example to the mapping of Ethernet ring protection example simultaneously, finish the control virtual private network service to the mapping of ethernet ring network example.
Embodiment:
In the network of reality, different operators and service provider have the network of oneself, and these networks are to be interweaved together, and the network service of different levels is provided.When different network interconnection; also need to provide the service protection switch function based on this hybrid network; in order to satisfy this requirement; the present invention is provided with a kind of hybrid network Ethernet ring protection reverse method, and it is the function of having expanded hybrid network on the basis that the standard Ethernet ring protection is switched.
Typical application network topology as shown in Figure 4, core is a MPLS network, the edge is the PB access network, and is professional by PB network and MPLS network.Border Gateway network element PE between heterogeneous networks need to provide special processing mode like this, and business protection is switched.
Described PB network carries out exchanges data based on EoS, and the MPLS network carries out exchanges data based on MoT.
Comprise Multi-instance among the figure, BG2/3 comprises 2 examples (at example of each ring operation), and the upper ERPS example of each ring is separate.
One, normal hybrid network protection switch status topological diagram, as shown in Figure 4,
This topology is by a MPLS network and 2 hybrid networks that the PB network forms.
2 Ethernet ring protection examples have been created.Each example comprises a port and a MPLS tunnel on Gateway Network Element.Each example comprises 2 ports on other PB network elements.
In normal condition:
(1) do not form loop on the PB ring, RPL Owner blocks RPL;
(2) on the MPLS core network since level cut apart also and can not form loop.
Two, link failure, as shown in Figure 5,
In when, on the PB ring link failure occuring when:
(1) 2 continuous BG of faulty link can send 2 central ports R-APS (SF) message;
(2) understand the blocked state of cancelling RPL after PB ring RPL Owner node receives R-APS (SF) message;
(3) all nodes on the PB ring all carry out FDB and refresh, and comprise hybrid network fringe node BG2 and BG3;
(4) the MPLS network does not need to carry out FDB and refreshes.
Three, tunnel failure, as shown in Figure 6,
When the tunnel failure of borde gateway network element between hybrid network occurs:
(1) RPL should be by deoppilation, otherwise the MPLS Network Access Point can be received two parts of the unknowns from the PB network/broadcast/multi broadcast message.
(2) the far-end PE fault should not trigger R-APS (SF) message, and reason is the same
(3) should not trigger FDB refreshes
But the business of passing through the tunnel between the borde gateway network element can be interrupted.Solution is: this tunnel should be protected, and perhaps interrupts never.
Behind the tunnel failure between the borde gateway network element, only affect the tunnel traffic between these 2 like this, on other not impact of business.
Four, R-APS message is in the processing in tunnel
(1) should be able to be in the special-purpose service control of different hybrid networks tunnel transmitting-receiving R-APS message;
(2) when tunnel transmitting-receiving R-APS message, should be able to be pressed into/eject tunnel label and VC label;
(3) should be able to the R-APS message that receives on the tunnel, be submitted to CPU and process.
Five, link failure recovery
1, behind the link failure recovery
(1) node that recovers can send R-APS (NR) message;
(2) RPL Owner node receives R-APS (NR) message and can trigger the WTR timer;
(3) when during WTR regularly, RPL Owner node receives the request of a higher priority, will cancel the WTR timer.
(4) when the WTR timer is expired, the simultaneously request without any other higher priority occurs, the RPLOwner node will initiate to switch, block the business on the RPL port, and transmit R-APS (NR two central ports, RB) come the notification ring node, the RPL port gets clogged, and refreshes simultaneously FDB.
(5) node on ring receives R-APS (NR, RB) message, can open the non-RPL port that originally got clogged, and carries out and refresh the FDB operation.
Above-described only is preferred implementation of the present invention; should be pointed out that the those of ordinary skill in the art, under the prerequisite that does not break away from core technology feature of the present invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (8)
1. the Ethernet ring protection reverse method of a hybrid network is characterized in that, mainly comprises:
1) establishment is based on the Ethernet ring protection example of VPN, and step is as follows:
1.1) creating virtual private network service, the virtual private network service group is comprised of at least more than one mutually homeomorphous virtual private network service;
1.2) judge whether the virtual private network service that creates controls the ethernet ring network business of type, if not, then do not process, if, create the Ethernet ring protection example, comprise the configuration information that adds the Ethernet ring protection example, create the central port of Ethernet ring protection example, create the virtual private network service group to the mapping of Ethernet ring protection example;
1.3) judge whether the configuration information of Ethernet ring protection example successfully adds, whether the central port of judging the Ethernet ring protection example successfully creates, judge and create the virtual private network service group to the whether successfully mapping of example, if so, then described Ethernet ring protection example based on VPN creates successfully;
2) the control virtual private network service when namely creating ERPS control virtual switch instance (VSI), will create the Ethernet ring protection example to the mapping of Ethernet ring protection example simultaneously, finish the control virtual private network service to the mapping of ethernet ring network example.
2. the Ethernet ring protection reverse method of hybrid network according to claim 1 is characterized in that, described virtual private network service group mainly comprises to the mapping of Ethernet ring protection example:
1.3.1) create the virtual private network service group to the mapping of MSTP Ethernet ring protection example;
1.3.2) create the virtual private network service group to the mapping of ERPS Ethernet ring protection example.
3. the Ethernet ring protection reverse method of hybrid network according to claim 2 is characterized in that, described virtual private network service group is as follows to the creation method of the mapping of MSTP Ethernet ring protection example:
1.3.1.1) judge whether virtual private network service belongs to MSTP Ethernet ring protection example 0, if not, creates unsuccessfully, if so, this virtual private network service of deletion from the virtual private network service group of MSTP Ethernet ring protection example;
1.3.1.2) this virtual private network service is added in the service groups of current MSTP Ethernet ring protection example, described virtual private network service group creates successfully to the mapping of Ethernet ring protection example.
4. the Ethernet ring protection reverse method of hybrid network according to claim 3 is characterized in that, described virtual private network service group is as follows to the creation method of the mapping of ERPS Ethernet ring protection example:
1.3.2.1) judge that whether virtual private network service belongs to MSTP Ethernet ring protection example 0, if so, repeats above-mentioned 1.3.1.1) to 1.3.1.2), if not, search the example at current virtual private network service place;
1.3.2.2) judge it is MSTP Ethernet ring protection example or ERPS Ethernet ring protection example, if MSTP Ethernet ring protection example, then create unsuccessfully, if ERPS Ethernet ring protection example, search the central port whether central port of this virtual private network service mates example;
1.3.2.4) if without identical central port, then create unsuccessfully, if identical central port is arranged, described virtual private network service group creates successfully to the mapping of Ethernet ring protection example.
5. the Ethernet ring protection reverse method of hybrid network according to claim 1 is characterized in that, further comprises: virtual private network service comprises to the deletion of Ethernet ring protection example mapping
3.1) delete the virtual private network service group to the mapping of MSTP Ethernet ring protection example;
3.2) delete the virtual private network service group to the mapping of ERPS Ethernet ring protection example.
6. the Ethernet ring protection reverse method of hybrid network according to claim 5 is characterized in that, described virtual private network service group is as follows to the delet method of the mapping of MSTP Ethernet ring protection example:
3.1.1) in current MSTP Ethernet ring protection example, should business delete;
3.1.2) this business is added in the MSTP Ethernet ring protection example 0, deletion is finished.
7. the Ethernet ring protection reverse method of hybrid network according to claim 5 is characterized in that, described virtual private network service group is as follows to the delet method of the mapping of ERPS Ethernet ring protection example:
3.2.1) search the ERPS Ethernet ring protection example at place according to virtual private network service ID;
3.2.2) judge whether this business is mapped to a plurality of ERPS Ethernet ring protection examples, if so, this business to be deleted from current ERPS Ethernet ring protection example, deletion is finished; If not, this business is deleted from current ERPS Ethernet ring protection example, then this business is added in the MSTP Ethernet ring protection example 0.
8. the Ethernet ring protection reverse method of hybrid network according to claim 1; it is characterized in that; described control virtual private network service is to the mapping of Ethernet ring protection example; when creating ERPS control virtual switch instance (VSI); to create simultaneously the Ethernet ring protection example, finish the control virtual private network service to the mapping of Ethernet ring protection example.
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| CN102215129B (en) * | 2011-06-15 | 2017-10-10 | 中兴通讯股份有限公司 | The external method of business module, apparatus and system |
| CN102307132A (en) * | 2011-08-25 | 2012-01-04 | 杭州依赛通信有限公司 | Virtual-private-network-based multi-instance Ethernet ring protection switching method |
| CN102377601B (en) | 2011-10-14 | 2014-03-26 | 杭州华三通信技术有限公司 | LSP (Local Switched Path) fault notification method and LSP fault notification device |
| CN113794656B (en) * | 2021-08-25 | 2023-11-07 | 新华三信息安全技术有限公司 | Message forwarding method and device |
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| CN101272310A (en) * | 2007-03-22 | 2008-09-24 | 华为技术有限公司 | Ethernet looped network automatic protection rotation method and device |
| WO2010115260A1 (en) * | 2009-04-09 | 2010-10-14 | Nortel Networks Limited | Enabling an ethernet ring network to scalably support a hub-and-spoke connectivity model |
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| CN101272310A (en) * | 2007-03-22 | 2008-09-24 | 华为技术有限公司 | Ethernet looped network automatic protection rotation method and device |
| WO2010115260A1 (en) * | 2009-04-09 | 2010-10-14 | Nortel Networks Limited | Enabling an ethernet ring network to scalably support a hub-and-spoke connectivity model |
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