CN105024836A - Switching method of main use service router SR and standby SR, apparatus and the SR - Google Patents
Switching method of main use service router SR and standby SR, apparatus and the SR Download PDFInfo
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Abstract
The invention provides a switching method of a main use service router SR and a standby SR, an apparatus and the SR. The method is used in a metropolitan area network adopting a shared gateway. The method comprises the following steps of detecting whether a state of a link between the main use SR and an OLT is an available state through a corresponding protocol according to a configuration mode of the optical line terminal OLT, wherein the protocol is an Ethernet connectivity fault management ETH-CFM protocol when the OLT adopts a double uplink configuration; the protocol is a link aggregation control protocol LACP when the OLT adopts a single uplink configuration; when the state of the link between the main use SR and an OLT is an unavailable state, switching the main use SR from a main use state into a standby state; notifying the standby SR to be switched from the standby state to the main use state. By using a technical scheme provided in the invention, according to a link communication state, switching between the main use SR and the standby SR can be automatically realized; manual intervention is not needed and switching efficiency of the main use SR and the standby SR is increased.
Description
Technical field
The present invention relates to the communications field, particularly relate to the changing method of a kind of working traffic router SR and SR for subsequent use, device and SR.
Background technology
According to different access waies, the Access Layer of metropolitan area network and convergence-level be corresponding different topological structure also.SR(service router, business router) divide standby usage port according to different access waies.In the prior art, between standby usage SR, adopt cold standby mode, when primary section of network element or link occurs fault, complete active-standby switch by the mode of craft.Namely, when needs carry out standby usage SR switching, manual intervention is needed, inefficiency.
Summary of the invention
In order to solve the problems of the technologies described above, the invention provides the changing method of a kind of working traffic router SR and SR for subsequent use, device and SR, according to link communication state, can automatically realize the switching between standby usage SR, without the need to manual intervention, improve the switching efficiency of standby usage SR.
To achieve these goals, the invention provides the changing method of a kind of working traffic router SR and SR for subsequent use, for adopting in the metropolitan area network of shared gateway, comprise: according to the configuration mode of optical line terminal OLT, whether be upstate by the state of the link between the primary SR of corresponding protocol detection and described OLT, wherein, when described OLT adopts two up configuration, described agreement is Ethernet Connectivity Fault Management ETH-CFM agreement, when described OLT adopts single up configuration, described agreement is link aggregate control protocol LACP; When the state of the link between described primary SR and OLT is down state, primary SR is switched to stand-by state by master state; Notify that SR for subsequent use switches to master state by stand-by state.
Preferably, describedly stand-by state is switched to be specially by master state primary SR: the state of the Service Access point sap of primary SR is set to closed condition.
Preferably, describedly notify that SR for subsequent use switches to master state to be specially by stand-by state: by user's route redundancy protocol SRRP, communicate with SR for subsequent use, notify that SR for subsequent use switches to master state by stand-by state.
Present invention also offers the changing method of a kind of working traffic router SR and SR for subsequent use, for adopting in the metropolitan area network of standalone gateway, comprising: the communications status obtaining primary SR and SR for subsequent use; When the communications status of described primary SR and SR for subsequent use shows that SR for subsequent use cannot receive the message that primary SR sends, whether the link detected between SR for subsequent use and switch SW can be used; When link between SR for subsequent use and switch SW is available, SR for subsequent use is switched to master state by stand-by state.
Preferably, the communications status of the primary SR of described acquisition and SR for subsequent use is specially: by ETH-CFM agreement, obtains the communications status of primary SR and SR for subsequent use.
Present invention also offers the switching device shifter of a kind of working traffic router SR and SR for subsequent use, for adopting in the metropolitan area network of shared gateway, comprise: first detection module, for the configuration mode according to optical line terminal OLT, whether be upstate by the state of the link between the primary SR of corresponding protocol detection and described OLT, wherein, when described OLT adopts two up configuration, described agreement is Ethernet Connectivity Fault Management ETH-CFM agreement, when described OLT adopts single up configuration, described agreement is link aggregate control protocol LACP; Handover module, when the state for the link between described primary SR and OLT is down state, switches to stand-by state by primary SR by master state; Notification module, for notifying that SR for subsequent use switches to master state by stand-by state.
Preferably, described handover module is further used for the state of the Service Access point sap of primary SR to be set to closed condition.
Preferably, described notification module, by user's route redundancy protocol SRRP, communicates with SR for subsequent use, notifies that SR for subsequent use switches to master state by stand-by state.
Present invention also offers the switching device shifter of a kind of working traffic router SR and SR for subsequent use, for adopting in the metropolitan area network of standalone gateway, comprising: acquisition module, for obtaining the communications status of primary SR and SR for subsequent use; Second detection module, during for showing that when the communications status of described primary SR and SR for subsequent use SR for subsequent use cannot receive the message that primary SR sends, whether the link detected between SR for subsequent use and switch SW can be used; Handover module, time available for the link between SR for subsequent use and switch SW, switches to master state by SR for subsequent use by stand-by state.
Preferably, described acquisition module, by ETH-CFM agreement, obtains the communications status of primary SR and SR for subsequent use.
Present invention also offers a kind of SR, comprise the switching device shifter of working traffic router SR as above and SR for subsequent use.
The beneficial effect of technique scheme of the present invention is as follows:
The invention provides the changing method of a kind of working traffic router SR and SR for subsequent use, device and SR, according to link communication state, can automatically realize the switching between standby usage SR, without the need to manual intervention, improve the switching efficiency of standby usage SR.
Accompanying drawing explanation
The changing method flow chart of a kind of working traffic router SR that Fig. 1 provides for the embodiment of the present invention 1 and SR for subsequent use.
The changing method flow chart of a kind of working traffic router SR that Fig. 2 provides for the embodiment of the present invention 2 and SR for subsequent use.
The structural representation of the switching device shifter of a kind of working traffic router SR that Fig. 3 provides for the embodiment of the present invention 1 and SR for subsequent use.
The structural representation of the switching device shifter of a kind of working traffic router SR that Fig. 4 provides for the embodiment of the present invention 2 and SR for subsequent use.
Fig. 5 is the metropolitan area network structural representation adopting large V-structure.
Fig. 6 is the metropolitan area network structural representation adopting little V-structure.
Fig. 7 is the metropolitan area network structural representation adopting standalone gateway structure.
Embodiment
For making the technical problem to be solved in the present invention, technical scheme and advantage clearly, be described in detail below in conjunction with the accompanying drawings and the specific embodiments.
The present invention is directed in prior art when needs carry out standby usage SR switch time, need manual intervention, the problem of inefficiency, provide the changing method of a kind of working traffic router SR and SR for subsequent use, device and SR, can according to link communication state, automatically realize the switching between standby usage SR, without the need to manual intervention, improve the switching efficiency of standby usage SR.
The changing method flow chart of a kind of working traffic router SR that Fig. 1 provides for the embodiment of the present invention 1 and SR for subsequent use, for adopting in the metropolitan area network of shared gateway architecture, as shown in the figure, described method comprises:
Step S100, according to the configuration mode of optical line terminal OLT, whether be upstate by the state of the link between the primary SR of corresponding protocol detection and described OLT, wherein, when described OLT adopts two up configuration, described agreement is Ethernet Connectivity Fault Management ETH-CFM agreement, and when described OLT adopts single up configuration, described agreement is link aggregate control protocol LACP;
Step S102, when the state of the link between described primary SR and OLT is down state, switches to stand-by state by primary SR by master state;
Step S104, notifies that SR for subsequent use switches to master state by stand-by state.
In technique scheme, whether the Link State detected between primary SR and OLT can be used, when unavailable, primary SR is switched to stand-by state by master state, and notify that SR for subsequent use switches to master state by stand-by state, thus achieve the automatic switchover of standby usage SR, without the need to manual intervention, improve the switching efficiency of standby usage SR.
Wherein, when described OLT adopts two up configuration, by ETH-CFM agreement, whether the state detecting the link between primary SR and optical line terminal OLT is upstate.
In technique scheme, OLT adopts two up configuration, that is: the two access of OLT 2 switches, detect the Link State of primary SR to OLT, namely detect the Link State of the switch-spanning of primary SR to OLT, need to adopt the agreement of link detecting end to end can supporting inter-network element, therefore, ETH-CFM(Ethernet Connectivity Fault Management can be adopted, Ethernet Connectivity Fault Management) agreement, detects the Link State between primary SR and OLT.
Wherein, when described OLT adopts single up configuration, by link aggregate control protocol LACP, whether the state detecting the link between primary SR and optical line terminal OLT is upstate.
In technique scheme, OLT adopts single up configuration, that is: OLT accesses 1 switch, and OLT adopts LACP agreement to be connected to switch, detects the Link State of primary SR to OLT, SR can be detected respectively to the Link State of switch and switch to the Link State of OLT, wherein, LACP agreement is adopted between SR and switch, therefore, LACP agreement can be adopted, detect the Link State between primary SR and OLT.
Wherein, describedly stand-by state is switched to be specially by master state primary SR: the state of the Service Access point sap of primary SR is set to closed condition.
In technique scheme, when the state of the link between described primary SR and OLT is down state, the state of the Service Access point sap of primary SR is set to closed condition, now, the state of primary SR switches to stand-by state by the primary SR of master state by master state, as switched to initialize from master, thus make primary SR can not carry out the transmission of customer service.
Wherein, describedly notify that SR for subsequent use switches to master state to be specially by stand-by state: by user's route redundancy protocol SRRP, communicate with SR for subsequent use, notify that SR for subsequent use switches to master state by stand-by state.
In technique scheme, can be communicated by user's route redundancy protocol between primary SR with SR for subsequent use, thus notify that its state is switched to master state by stand-by state by SR for subsequent use, as switched to master from backupshunt.
The changing method flow chart of a kind of working traffic router SR that Fig. 2 provides for the embodiment of the present invention 2 and SR for subsequent use, for adopting the SR for subsequent use in the metropolitan area network of standalone gateway structure, described method comprises:
Step S200, obtains the communications status of primary SR and SR for subsequent use;
Step S202, when the communications status of described primary SR and SR for subsequent use shows that SR for subsequent use cannot receive the message that primary SR sends, whether the link detected between SR for subsequent use and switch SW can be used;
Step S204, when the link between SR for subsequent use and switch SW is available, switches to master state by SR for subsequent use by stand-by state.
In technique scheme, in standalone gateway structure, primary SR can be communicated by switch SW with SR for subsequent use, namely the link link in standalone gateway structure is: primary SR-switch SW-SR for subsequent use, when SR for subsequent use can receive the message from primary SR, show primary SR, link between switch SW and SR for subsequent use is normal, primary SR outwards can transmit data, therefore, without the need to carrying out the switching of standby usage SR, when SR for subsequent use cannot receive the message from primary SR, then show primary SR, link fails between switch SW and SR for subsequent use, it is likely the link fails between primary SR and switch SW, also be likely go wrong between SR for subsequent use and switch SW, when primary SR and switch SW goes wrong, need to carry out standby usage SR switching, that is: the stand-by state of SR for subsequent use switches to master state, when SR for subsequent use and switch SW goes wrong, then without the need to carrying out active-standby switch, therefore, whether can be used by the link detected between SR for subsequent use and switch SW, when link between SR for subsequent use and switch SW is available, carry out standby usage SR switching.
Wherein, the communications status of the primary SR of described acquisition and SR for subsequent use can be specially: by ETH-CFM agreement, obtains the communications status of primary SR and SR for subsequent use.
In standalone gateway structure, owing to there is no idle IP for the virtual and true gateway ip address configuration of SRRP, SRRP agreement can not be supported, therefore, the OAM characteristic of ETH-CFM agreement can be adopted, between standby usage SR, run ETH-CFM agreement.
The structural representation of the switching device shifter of a kind of working traffic router SR that Fig. 3 provides for the embodiment of the present invention 1 and SR for subsequent use, for adopting in the metropolitan area network of shared gateway architecture, the switching device shifter 30 of described working traffic router SR and SR for subsequent use comprises:
First detection module 31, for the configuration mode according to optical line terminal OLT, whether be upstate by the state of the link between the primary SR of corresponding protocol detection and described OLT, wherein, when described OLT adopts two up configuration, described agreement is Ethernet Connectivity Fault Management ETH-CFM agreement, and when described OLT adopts single up configuration, described agreement is link aggregate control protocol LACP;
Handover module 32, when the state for the link between described primary SR and OLT is down state, switches to stand-by state by primary SR by master state;
Notification module 33, for notifying that SR for subsequent use switches to master state by stand-by state.
In technique scheme, whether the Link State that first detection module 31 detects between primary SR and OLT can be used, when unavailable, primary SR is switched to stand-by state by master state by handover module 32, notification module 33 notifies that SR for subsequent use switches to master state by stand-by state, thus achieve the automatic switchover of standby usage SR, without the need to manual intervention, improve the switching efficiency of standby usage SR.
Preferably, described handover module is further used for the state of the Service Access point sap of primary SR to be set to closed condition.
Preferably, described notification module, by user's route redundancy protocol SRRP, communicates with SR for subsequent use, notifies that SR for subsequent use switches to master state by stand-by state.
The structural representation of the switching device shifter of a kind of working traffic router SR that Fig. 4 provides for the embodiment of the present invention 2 and SR for subsequent use, for adopting the SR for subsequent use in the metropolitan area network of standalone gateway structure, the switching device shifter 40 of described working traffic router SR and SR for subsequent use comprises:
Acquisition module 41, for obtaining the communications status of primary SR and SR for subsequent use;
Second detection module 42, during for showing that when the communications status of described primary SR and SR for subsequent use SR for subsequent use cannot receive the message that primary SR sends, whether the link detected between SR for subsequent use and switch SW can be used;
Handover module 43, time available for the link between SR for subsequent use and switch SW, switches to master state by SR for subsequent use by stand-by state.
In technique scheme, in standalone gateway structure, primary SR can communicate with SR for subsequent use, when SR for subsequent use can receive the message from primary SR, show that primary SR outwards can transmit data, therefore, without the need to carrying out the switching of standby usage SR, when SR for subsequent use cannot receive the message from primary SR, then show primary SR, link fails between switch SW and SR for subsequent use, it is likely the link fails between primary SR and switch SW, also be likely go wrong between SR for subsequent use and switch SW, when primary SR and switch SW goes wrong, need to carry out standby usage SR switching, that is: the stand-by state of SR for subsequent use switches to master state, acquisition module 41 obtains the communications status of primary SR and SR for subsequent use, when the communications status of primary SR and SR for subsequent use shows that SR for subsequent use cannot receive the message that primary SR sends, when SR for subsequent use and switch SW goes wrong, then without the need to carrying out active-standby switch, therefore, whether the second detection module 42 can be used by the link detected between SR for subsequent use and switch SW, when link between SR for subsequent use and switch SW is available, SR for subsequent use is switched to master state by stand-by state by handover module 43.
Preferably, described acquisition module, by ETH-CFM agreement, obtains the communications status of primary SR and SR for subsequent use.
A kind of SR, comprises the switching device shifter of working traffic router SR as above and SR for subsequent use.
Fig. 5 is the metropolitan area network structural representation adopting large V-structure.
The metropolitan area network design feature of large V-type access way is: the two access of OLT 2 SW(switch, switch), as shown in the figure, when working traffic router is SR1, then customer service route downlink traffic is transmitted by SR1, through switch SW1, be sent to OLT, be sent to each user via optical network unit ONU.When the link of SR1 to OLT occurs to interrupt, then this link cannot transmit data, if still by SR1 as working traffic router, then there will be problem, therefore need the switching carrying out standby usage business router, therefore, working traffic router can determine whether to carry out the switching of standby usage business router according to the whole process leap SW Link State of working traffic router to OLT.
In order to detect the Link State of working traffic router and OLT, can make to run ETH-CFM agreement between business router and OLT, according to the Link State of this protocol detection working traffic router and OLT.Embodiment is: as shown in the figure, enable ETH-CFM agreement respectively at 2 ports of the OLT first line of a couplet and 2 business router second line of a couplet ports corresponding to this 2 ports, between OLT and working traffic router by SW1 transparent transmission ETH-OAM(ethernet operation, administration andmanagement ethernet operation, administer and maintain) message.When link between working traffic router SR1 and SW1 or the link between SW1 and OLT occur to interrupt, working traffic router SR1 cannot receive the ETH-OAM message that OLT sends, thus can determine that the link between working traffic router SR1 and OLT interrupts, the state of the associated user interface sap point of working traffic router SR1 becomes down from up, and the state of working traffic router SR1 switches to initialize by master.
By the SRRP run between working traffic router and standby traffic router, the virtual redundancy interface of standby usage business router can transmission state synchronizing information, working traffic router can notify that the state of standby traffic router SR2 switches to master by backupshunt, that is: former standby traffic router SR2 switches to working traffic router, now, current working traffic router and former standby traffic router SR2 issue the customer service route after switching, and the customer service route downlink traffic of this section is switched to SR2 by SR1.
Fig. 6 is the metropolitan area network structural representation adopting little V-structure.
The metropolitan area network design feature of little V-type access way is: OLT accesses 1 SW(switch, switch), as shown in the figure, when working traffic router is SR1, then customer service route downlink traffic is transmitted by SR1, through switch SW, be sent to OLT, be sent to each user via optical network unit ONU.When there is the link generation interruption of interruption or SW to OLT in the link of SR1 to SW, then SR1 to OLT cannot transmit data, if still by SR1 as working traffic router, then there will be problem, therefore need the switching carrying out standby usage business router, therefore, working traffic router can determine whether to carry out the switching of standby usage business router according to the whole process leap SW Link State of working traffic router to OLT, crossing over SW Link State without the need to detecting working traffic router to the whole process of OLT, only needing the state detecting each section of link.
In order to detect the Link State of working traffic router and OLT; can make to run LACP agreement between business router and SW; according to the Link State of this protocol detection working traffic router and SW; and between SW and OLT, the protection of link level is realized by dual link binding, LACP agreement can certainly be adopted to go to detect the Link State between SW and OLT.Embodiment is: as shown in the figure, enables LACP agreement between SW and business router.When link between working traffic router SR1 and SW occurs to interrupt, working traffic router SR1 cannot receive the LACPDU(LinkAggregation Control Protocol Data Unit that SW sends, link aggregate control protocol data cell), thus can determine that the link between working traffic router SR1 and OLT interrupts, the state of the associated user interface sap point of working traffic router SR1 becomes down from up, and the state of working traffic router SR1 switches to initialize by master.
By the SRRP run between working traffic router and standby traffic router, the virtual redundancy interface of standby usage business router can transmission state synchronizing information, working traffic router can notify that the state of standby traffic router SR2 switches to master by backupshunt, that is: former standby traffic router SR2 switches to working traffic router, now, current working traffic router and former standby traffic router SR2 issue the customer service route after switching, and the customer service route downlink traffic of this section is switched to SR2 by SR1.
Fig. 7 is the metropolitan area network structural representation adopting standalone gateway structure.
The metropolitan area network design feature of standalone gateway access way is: each user distributes one section of independently address space, has independently gateway.In the metropolitan area network of standalone gateway access way, the state of the Service Access point sap of working traffic router is up, and the state of the Service Access point sap of standby traffic router is down.
Due in the metropolitan area network of standalone gateway access way, there is no 2 idle IP address resources for the true gateway IP of SRRP, do not support SRRP agreement and SRRP agreement cannot be run between working traffic server and standby traffic server, therefore, as shown in the figure, in order to control the state of the Service Access point sap of working traffic router SR1 and standby traffic router SR2, can by running ETH-CFM agreement between working traffic router SR1 and standby traffic router SR2, realized by the mode of SW transparent transmission, working traffic router SR1 only sends out the OAM message not receiving ETH-CFM agreement, standby traffic router SR2 only receives the OAM message not sending out ETH-CFM agreement, during the link down of working traffic router SR1 side, the state of the sap of working traffic router SR1 will become down, now standby traffic router SR2 cannot receive the OAM message of the ETH-CFM agreement that working traffic router SR1 sends, thus can determine that the link of working traffic router SR1 side interrupts, the state of the associated user interface sap point of standby traffic router SR2 becomes up from down, now, current working traffic router and former standby traffic router SR2 issue the customer service route after switching, the customer service route downlink traffic of this section is switched to SR2 by SR1.
The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from principle 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 (11)
1. a changing method of working traffic router SR and SR for subsequent use, for adopting in the metropolitan area network of shared gateway, is characterized in that, comprising:
According to the configuration mode of optical line terminal OLT, whether be upstate by the state of the link between the primary SR of corresponding protocol detection and described OLT, wherein, when described OLT adopts two up configuration, described agreement is Ethernet Connectivity Fault Management ETH-CFM agreement, when described OLT adopts single up configuration, described agreement is link aggregate control protocol LACP;
When the state of the link between described primary SR and OLT is down state, primary SR is switched to stand-by state by master state;
Notify that SR for subsequent use switches to master state by stand-by state.
2. method as claimed in claim 1, is characterized in that, describedly switches to stand-by state to be specially by master state primary SR:
The state of the Service Access point sap of primary SR is set to closed condition.
3. method as claimed in claim 1, is characterized in that, describedly notifies that SR for subsequent use switches to master state to be specially by stand-by state:
By user's route redundancy protocol SRRP, communicate with SR for subsequent use, notify that SR for subsequent use switches to master state by stand-by state.
4. a changing method of working traffic router SR and SR for subsequent use, for adopting in the metropolitan area network of standalone gateway, is characterized in that, comprising:
Obtain the communications status of primary SR and SR for subsequent use;
When the communications status of described primary SR and SR for subsequent use shows that SR for subsequent use cannot receive the message that primary SR sends, whether the link detected between SR for subsequent use and switch SW can be used;
When link between SR for subsequent use and switch SW is available, SR for subsequent use is switched to master state by stand-by state.
5. method as claimed in claim 4, it is characterized in that, the communications status of the primary SR of described acquisition and SR for subsequent use is specially:
By ETH-CFM agreement, obtain the communications status of primary SR and SR for subsequent use.
6. a switching device shifter of working traffic router SR and SR for subsequent use, for adopting in the metropolitan area network of shared gateway, is characterized in that, comprising:
First detection module, for the configuration mode according to optical line terminal OLT, whether be upstate by the state of the link between the primary SR of corresponding protocol detection and described OLT, wherein, when described OLT adopts two up configuration, described agreement is Ethernet Connectivity Fault Management ETH-CFM agreement, and when described OLT adopts single up configuration, described agreement is link aggregate control protocol LACP;
Handover module, when the state for the link between described primary SR and OLT is down state, switches to stand-by state by primary SR by master state;
Notification module, for notifying that SR for subsequent use switches to master state by stand-by state.
7. device as claimed in claim 6, it is characterized in that, described handover module is further used for the state of the Service Access point sap of primary SR to be set to closed condition.
8. device as claimed in claim 7, is characterized in that, described notification module, by user's route redundancy protocol SRRP, communicates with SR for subsequent use, notifies that SR for subsequent use switches to master state by stand-by state.
9. a switching device shifter of working traffic router SR and SR for subsequent use, for adopting in the metropolitan area network of standalone gateway, is characterized in that, comprising:
Acquisition module, for obtaining the communications status of primary SR and SR for subsequent use;
Second detection module, during for showing that when the communications status of described primary SR and SR for subsequent use SR for subsequent use cannot receive the message that primary SR sends, whether the link detected between SR for subsequent use and switch SW can be used;
Handover module, time available for the link between SR for subsequent use and switch SW, switches to master state by SR for subsequent use by stand-by state.
10. device as claimed in claim 9, is characterized in that, described acquisition module, by ETH-CFM agreement, obtains the communications status of primary SR and SR for subsequent use.
11. 1 kinds of SR, is characterized in that, comprise the switching device shifter of working traffic router SR as described in any one of claim 6-10 and SR for subsequent use.
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