CN101145856B - A multi-broadcast communication method and device for automatic protection switching - Google Patents
A multi-broadcast communication method and device for automatic protection switching Download PDFInfo
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Abstract
The invention relates to a multicast communication method and a device thereof capable of realizing automatic protective switching used in a circulator optical communication network. Network management software assigns an IP address for each multicast group. Each node's automatic protective switching controller is activated and then automatically added into the multicast group. Each node's route controller is activated and then assigns a route for the multicast groups' IP address. When an automatic protective switching controller receives a fault warning and needs to send out an automatic protective switching request, the long track signaling will be packaged into a multicast IP packet and send out the survival time field of the message to the long track signaling multicast IP packet. The controller will also package the short track signaling growth into the multicast IP packet and set the survival time field as the number of the circulator network nodes and the number is sent out to the short track signal multicast IP packet in the long track. The invention controls the time order of the signal receiving in the network, improves the reliability of the automatic protective switching and enhances the network configuration automation degree without artificial mode to configuring the multicast routes.
Description
Technical field
The present invention relates to optical communication field, particularly relate to multicast IP communication means and the device of realizing APS.
Background technology
Present optical transfer network to network survivability require increasingly high.Network survivability is meant network under the situation that fault takes place, and network still can be kept the ability of service continuity.APS is that APS (Automatic Protection Switching) is the important means that realizes the optical-fiber network survivability.
For ring network, protection type commonly used has two types of multiplex section ring share protect and passage ring share protect.The principal character of ring network protection agreement is to use major diameter signaling and minor axis signaling to realize replying of agreement.So-called major diameter (Long Path) is meant away from another section path of sending the switching request section of striding.So-called minor axis (Short Path) is meant and crosses over the path of sending the switching request section of striding.Generally speaking, have other intermediate nodes on the major diameter, do not have intermediate node on the minor axis.The signaling of sending along major diameter is called as the major diameter signaling, because the intermediate node that is positioned on the major diameter only just can become pass-through state after receiving the major diameter signaling, so the major diameter signaling is essential for the intermediate node on the major diameter; The signaling of sending along minor axis is called as the minor axis signaling, and the minor axis signaling only needs the node of the minor axis section of striding opposite side to receive, so minor axis is only meaningful to the node of the minor axis section of striding opposite side.
A protection group typically refers to the set of the one group of hardware that is provided with in order to protect certain resource (wavelength channel or a multiplex section etc.), generally includes APS detector, APS controller, APS actuator etc.
(possibly be switching of causing of fault, also possibly be switching of causing of external command) need be sent switching request to major diameter and minor axis both direction when a node request was switched on the ring network.If switching request transmits via IP network, there are clean culture and multicast dual mode alternative.Because when network breaks down; Need carry out singlecast router switches; And generally there is several seconds time the time that singlecast router switches experience; Route is switched influence and quilt is postponed so the transmission of clean culture signaling can receive, and the time that finally causes professional protection to be switched can not be satisfied the time requirement less than 50ms.And the influence that the transmission of multicast signaling is not switched by singlecast router, so select the load mode of multicast usually for use as switching request.
The multi-casting communication mode that adopts at present is: webmastering software is the multicast IP of each protection configuration set on the ring network, and all APS controllers of each protection group all add the affiliated multi-broadcast group of protection group; Webmastering software is given path control deivce with the routing configuration of each multi-broadcast group; When the APS controller sends switching request; Be packaged into major diameter signaling multicast IP bag and minor axis signaling multicast IP bag to major diameter signaling and minor axis signaling respectively; And with TTL (the Time To Live of multicast IP packet voice head; Life span) field is arranged to the ring network interstitial content, to guarantee that all nodes can be received switching request on the ring network; The APS controller mails to path control deivce with multicast IP bag, and path control deivce is distributed to multicast IP bag the APS controller of other node.
Present multi-casting communication mode is applied to APS and has defective: other nodes are almost received this switching request simultaneously on the ring network; Rather than successively receive according to order; Can not guarantee the sequential of other node processing switching request on the ring network; Externally under order and the complex situations that fault combines, possibly cause protecting and switch inefficacy; In addition, present multi-casting communication mode needs a lot of network management configuration, uses very inconvenient.
Summary of the invention
Technical problem to be solved by this invention is, a kind of multi-broadcast communication method and device of realizing APS is provided, and receives switching request to guarantee each node according to precedence, and network management configuration is succinct.
To achieve these goals; The invention provides a kind of multi-broadcast communication method of realizing APS; Be used for the ring light communication network; Each node that wherein is in the ring network in the same protection group all comprises interconnective Automatic Protection Switching Control and path control deivce; Simultaneously webmaster be the major diameter signaling multi-broadcast group of sending to the major diameter signaling multi-broadcast group of counterclockwise sending, to clockwise direction, to the minor axis signaling multi-broadcast group of counterclockwise sending, to the minor axis signaling multi-broadcast group of clockwise direction transmission; Distributed multi-broadcast group IP address, the Automatic Protection Switching Control of all nodes of said protection group adds said four multi-broadcast group automatically after startup;
The path control deivce of all nodes of said protection group is respectively said four multi-broadcast group IP address assignment routes after startup;
When the Automatic Protection Switching Control of a node of said protection group is received fault alarm; When needing to send the APS request; Be packaged into major diameter signaling multicast IP bag to the major diameter signaling; Life span field to the heading of said major diameter signaling multicast IP bag is provided with so that said major diameter signaling multicast IP bag can only arrive first the adjacent Automatic Protection Switching Control on the major diameter, and sends to the major diameter signaling multi-broadcast group IP address along the major diameter path; Be packaged into minor axis signaling multicast IP bag to the minor axis signaling, and the life span field of the heading of said minor axis signaling multicast IP bag is made as the node number in the said protection group, send to minor axis signaling multi-broadcast group IP address along the major diameter path.
The path control deivce of said all nodes of protection group is that the route of four multi-broadcast group IP address assignments comprises:
The purpose IP address of multicast IP bag is the major diameter signaling multi-broadcast group IP address of sending to counterclockwise, and source IP address is local port IP address, and the IP bag is transmitted toward the non-local port of side counterclockwise;
The purpose IP address of multicast IP bag is the major diameter signaling multi-broadcast group IP address of sending to counterclockwise, and source IP address is non-local port IP address, and the IP bag is transmitted to local Automatic Protection Switching Control;
The purpose IP address of multicast IP bag is the major diameter signaling multi-broadcast group IP address of sending to clockwise direction, and source IP address is local port IP address, and the IP bag is transmitted toward the non-local port of clockwise direction side;
The purpose IP address of multicast IP bag is the major diameter signaling multi-broadcast group IP address of sending to clockwise direction, and source IP address is non-local port IP address, and the IP bag is transmitted to local Automatic Protection Switching Control;
The purpose IP address of multicast IP bag is the minor axis signaling multi-broadcast group IP address of sending to counterclockwise, and source IP address is local port IP address, and the IP bag is transmitted toward the non-local port of side counterclockwise;
The purpose IP address of multicast IP bag is the minor axis signaling multi-broadcast group IP address of sending to counterclockwise; And source IP address is non-local port IP address, and the IP bag is transmitted to local Automatic Protection Switching Control and is transmitted to the non-local port of side counterclockwise simultaneously;
The purpose IP address of multicast IP bag is the minor axis signaling multi-broadcast group IP address of sending to clockwise direction, and source IP address is local port IP address, and the IP bag is transmitted toward the non-local port of clockwise direction side;
The purpose IP address of multicast IP bag is the minor axis signaling multi-broadcast group IP address of sending to clockwise direction; And source IP address is non-local port IP address, and the IP bag is transmitted to local Automatic Protection Switching Control and is transmitted to the non-local port of clockwise direction side simultaneously.
Said major diameter signaling multicast IP bag or minor axis signaling multicast IP bag are transmitted according to corresponding route in the path control deivce of each node of said protection group.
The Automatic Protection Switching Control of each node of said protection group is tested to the said minor axis signaling multicast IP bag that receives; If not sending to oneself; Abandon said minor axis signaling multicast IP bag,, said minor axis signaling multicast IP bag is handled if send to oneself.
The invention also discloses a kind of multi-casting communication device of realizing APS; Be used for the ring light communication network; The minor axis signaling multi-broadcast group that webmaster is respectively the major diameter signaling multi-broadcast group of sending to the major diameter signaling multi-broadcast group of counterclockwise sending, to clockwise direction, sends to the minor axis signaling multi-broadcast group of counterclockwise sending, to clockwise direction; Distributed multi-broadcast group IP address, each node that said ring network is in the same protection group all comprises interconnective Automatic Protection Switching Control and path control deivce;
Said path control deivce is used to be respectively said four multi-broadcast group IP address assignment routes;
Said Automatic Protection Switching Control adds said four multi-broadcast group automatically after startup; And be used for receiving fault alarm; When needing to send the APS request; Be packaged into major diameter signaling multicast IP bag to the major diameter signaling, the life span field of the heading of said major diameter signaling multicast IP bag be provided with so that said major diameter signaling multicast IP bag can only arrive first the adjacent Automatic Protection Switching Control on the major diameter, and send to major diameter signaling multi-broadcast group IP address along the major diameter path; Be packaged into minor axis signaling multicast IP bag to the minor axis signaling, and the life span field of the heading of said minor axis signaling multicast IP bag is made as the node number in the said protection group, send to minor axis signaling multi-broadcast group IP address along the major diameter path.
Path control deivce in each node of said protection group is connected with the port of local Automatic Protection Switching Control through local port, is connected through the port of non-local port with the path control deivce of adjacent node.
Said path control deivce is that the route of four multi-broadcast group IP address assignments comprises:
The purpose IP address of multicast IP bag is the major diameter signaling multi-broadcast group IP address of sending to counterclockwise, and source IP address is local port IP address, and the IP bag is transmitted toward the non-local port of side counterclockwise;
The purpose IP address of multicast IP bag is the major diameter signaling multi-broadcast group IP address of sending to counterclockwise, and source IP address is non-local port IP address, and the IP bag is transmitted to local Automatic Protection Switching Control;
The purpose IP address of multicast IP bag is the major diameter signaling multi-broadcast group IP address of sending to clockwise direction, and source IP address is local port IP address, and the IP bag is transmitted toward the non-local port of clockwise direction side;
The purpose IP address of multicast IP bag is the major diameter signaling multi-broadcast group IP address of sending to clockwise direction, and source IP address is non-local port IP address, and the IP bag is transmitted to local Automatic Protection Switching Control;
The purpose IP address of multicast IP bag is the minor axis signaling multi-broadcast group IP address of sending to counterclockwise, and source IP address is local port IP address, and the IP bag is transmitted toward the non-local port of side counterclockwise;
The purpose IP address of multicast IP bag is the minor axis signaling multi-broadcast group IP address of sending to counterclockwise; And source IP address is non-local port IP address, and the IP bag is transmitted to local Automatic Protection Switching Control and is transmitted to the non-local port of side counterclockwise simultaneously;
The purpose IP address of multicast IP bag is the minor axis signaling multi-broadcast group IP address of sending to clockwise direction, and source IP address is local port IP address, and the IP bag is transmitted toward the non-local port of clockwise direction side;
The purpose IP address of multicast IP bag is the minor axis signaling multi-broadcast group IP address of sending to clockwise direction; And source IP address is non-local port IP address, and the IP bag is transmitted to local Automatic Protection Switching Control and is transmitted to the non-local port of clockwise direction side simultaneously.
Each node in the said protection group is transmitted the major diameter signaling multicast IP bag or the minor axis signaling multicast IP bag that receive according to the relative route that is comprised in the path control deivce separately.
The Automatic Protection Switching Control of each node of said protection group is used to check the said minor axis signaling multicast IP bag that receives; If not sending to oneself; Abandon said minor axis signaling multicast IP bag,, said minor axis signaling multicast IP bag is handled if send to oneself.
The present invention makes the major diameter signaling transmit according to the hop-by-hop mode, has effectively controlled the sequential of each network element reception major diameter signaling, has improved the reliability of APS greatly.And can add the multicast route automatically through path control deivce, need not save manpower, also strengthen the automaticity of network configuration through the webmaster manual type to path control deivce configuration multicast route.
Description of drawings
Fig. 1 is the detailed connection sketch map of DWDM equipment ring network monitor channel;
Fig. 2 is the detailed structure sketch map of DWDM equipment network element.
Embodiment
Following with reference to accompanying drawing, specify embodiment of the present invention.
Fig. 1 is the detailed connection sketch map of DWDM (Dense wavelength division multiplexing, dense wave division multipurpose) equipment ring network monitor channel.Wherein, A, B, C, D represent four DWDM equipment network elements.The detailed structure of this DWDM equipment network element sees also Fig. 2.
Each DWDM equipment network element is formed by APS controller 201 and path control deivce 202 and the professional veneer of carrying DWDM.Because not relating to, description of the invention do not carry the professional veneer of DWDM, so the DWDM service board is not shown in the diagram.Be each node in the ring network is accomplished signaling by the cooperation of path control deivce and APS controller transmitting-receiving and processing.
Consult Fig. 1, the Ethernet interface 1 of the path control deivce of A network element links to each other with the Ethernet interface 2 of counter clockwise direction side D network element path control deivce, the Ethernet interface 2 of A network element path control deivce links to each other with the Ethernet interface 1 of clockwise direction side B network element path control deivce.The connection situation of B, C, D network element and A network element are similar in the ring network, will not give unnecessary details.
Webmastering software has distributed 4 multi-broadcast group IP, is represented by LL (Long path, Left), LR (Longpath, Right), SL (Short path, Left), SR (Short path, Right) respectively.Wherein, LL representes the multi-broadcast group IP that when the counter clockwise direction side is sent the major diameter signaling, uses; LR representes the multi-broadcast group IP that when the clockwise direction side is sent the major diameter signaling, uses; SL representes the multi-broadcast group IP that when the counter clockwise direction side is sent the minor axis signaling, uses; SR representes the multi-broadcast group IP that when the clockwise direction side is sent the minor axis signaling, uses.
The equipment of A, B, C, four network elements of D is in the same protection group, is four nodes in the ring network.The APS controller of each node adds LL, LR, SL, these 4 multi-broadcast group of SR automatically after startup, and path control deivce in each node and shared 4 the multi-broadcast group IP that distributed by webmastering software of APS controller.With when APS takes place, when a node listens to a specific multi-broadcast group IP, then receive all packets that send to this IP address, realize that through the multicast mode signaling switches.
And each path control deivce is that 4 multi-broadcast group IP respectively distribute two routes after startup automatically, promptly adds 8 multicast routes automatically, and they are respectively:
Route 1:IP bag purpose IP is that LL and source IP are local port IP, and the IP bag is transmitted toward the non-local port of counter clockwise direction side.
Route 2:IP bag purpose IP is that LL and source IP are non-local port IP, and the IP bag is transmitted to local APS controller.
Route 3:IP bag purpose IP is that LR and source IP are local port IP, and the IP bag is transmitted toward the non-local port of clockwise direction side.
Route 4:IP bag purpose IP is that LR and source IP are non-local port IP, and the IP bag is transmitted to local APS controller.
Route 5:IP bag purpose IP is that SL and source IP are local port IP, and the IP bag is transmitted toward the non-local port of counter clockwise direction side.
Route 6:IP bag purpose IP is that SL and source IP are non-local port IP, and the IP bag is transmitted to local APS controller and is transmitted to the non-local port of side counterclockwise simultaneously.
Route 7:IP bag purpose IP is that SR and source IP are local port IP, and the IP bag is transmitted toward the non-local port of clockwise direction side.
Route 8:IP bag purpose IP is that SR and source IP are non-local port IP, and the IP bag is transmitted to local APS controller and is transmitted to the non-local port of clockwise direction side simultaneously.
Among the present invention, path control deivce adds the multicast route automatically, need not save manpower through the webmaster manual type to path control deivce configuration multicast route, has also strengthened the automaticity of network configuration.
When the APS controller need send switching request; Be packaged into major diameter signaling multicast IP bag and minor axis signaling multicast IP bag to major diameter signaling and minor axis signaling respectively; The TTL of major diameter signaling multicast IP packet voice head is set to 1; So that said major diameter signaling multicast IP bag can only arrive first the adjacent APS controller on the major diameter, the TTL of minor axis signaling multicast IP packet voice head is set to the interstitial content in the ring network.
That is, in the process of sending,, send, and the TTL that the IP bag is set is 1 toward the LL multi-broadcast group toward the major diameter signaling that side is counterclockwise sent; Toward the major diameter signaling that the clockwise direction side is sent, send toward the LR multi-broadcast group, and the TTL that the IP bag is set is 1; Toward the minor axis signaling that side is counterclockwise sent, send toward the SL multi-broadcast group, and the TTL that the IP bag is set is a protection group interior nodes number; Toward the minor axis signaling that the clockwise direction side is sent, send toward the SR multi-broadcast group, and the TTL that the IP bag is set is a protection group interior nodes number.
Below in conjunction with embodiment, implementation procedure of the present invention is described.In the present embodiment; A, B, C, common four the multi-broadcast group IP that use of four network elements of D are respectively: 224.8.1.1 (LL), 224.8.1.2 (LR), 224.8.1.3 (SL), 224.8.1.4 (SR), and promptly 224.8.1.1 is the multi-broadcast group IP that uses when sending counter clockwise direction side major diameter signaling; 224.8.1.2 be the multi-broadcast group IP that uses when sending clockwise direction side major diameter signaling; 224.8.1.3 be the multi-broadcast group IP that uses when sending counter clockwise direction side minor axis signaling; 224.8.1.4 be the multi-broadcast group IP that uses when sending clockwise direction side minor axis signaling.The APS controller of each node adds this four multi-broadcast group after starting automatically.
And after the router startup of each node, respectively distribute two routes for these four multi-broadcast group IP automatically, its routing table is as follows:
| The route numbering | Purpose IP | Source IP | Routing mode |
| 1 | 224.8.1.1(LL) | The IP of Ethernet interface 3 | Send by Ethernet interface 1 |
| 2 | 224.8.1.1(LL) | The IP of Ethernet interface 2 | Mail to local APS controller by Ethernet interface 3 |
| 3 | 224.8.1.2(LR) | The IP of Ethernet interface 3 | Send from Ethernet interface 2 |
| 4 | 224.8.1.2(LR) | The IP of Ethernet interface 1 | Mail to local APS controller by Ethernet interface 3 |
| 5 | 224.8.1.3(SL) | The IP of Ethernet interface 3 | Send by Ethernet interface 1 |
| 6 | 224.8.1.3(SL) | The IP of Ethernet interface 2 | Mail to local APS controller by Ethernet interface 3, send from Ethernet interface 1 simultaneously |
| 7 | 224.8.1.4(SR) | The IP of Ethernet interface 3 | Send by Ethernet interface 2 |
| 8 | 224.8.1.4(SR) | The IP of Ethernet interface 1 | Mail to local APS controller by Ethernet interface 3, send from Ethernet interface 2 simultaneously |
Suppose that the optical fiber that mails to B network element direction from the A network element breaks down; Because monitor channel is a wavelength channel in the optical fiber; So if the optical fiber that mails to B network element direction from the A network element breaks down, the monitor channel that then mails to B network element direction from the A network element also can break down simultaneously.After breaking down, after the APS controller of B network element is received the alarm of service board, need send switching request to A immediately, comprising a major diameter signaling and a minor axis signaling.
The major diameter signaling is sent along the major diameter path; And the optical fiber on the minor axis section of striding has broken down, and under the situation that monitor channel also breaks down simultaneously, sends signaling if also attempt from the minor axis that breaks down; Usually can cause sending failure, so the minor axis signaling also can be sent along the major diameter path.Method is that the path control deivce of each intermediate node on the major diameter path transmits the minor axis signaling; Simultaneously the APS controller of each intermediate node can judge whether the signaling of receiving be the minor axis signaling according to the major diameter in the signaling/minor axis sign, and whether can judge the signaling destination according to the sign of the signaling destination in the signaling be oneself; If judge the minor axis signaling that is not to send to oneself, then abandon this signaling, being worked in coordination by each path control deivce on the intermediate node is sent to the minor axis signaling node of the minor axis section of striding opposite side.
Below introduce the process of transmitting of major diameter signaling and minor axis signaling respectively:
When needing to send switching request; The APS controller is packaged into major diameter signaling multicast IP bag and minor axis signaling multicast IP bag to major diameter signaling and minor axis signaling respectively; The TTL of major diameter signaling multicast IP packet voice head is set to 1, and the TTL of minor axis signaling multicast IP packet voice head is set to protection group node number in the ring network---and 4; For mailing to the major diameter signaling of side counterclockwise, send toward 224.8.1.1 multi-broadcast group IP; For the major diameter signaling that mails to the clockwise direction side, send toward 224.8.1.2 multi-broadcast group IP; For mailing to the minor axis signaling of side counterclockwise, send toward 224.8.1.3 multi-broadcast group IP; For the minor axis signaling that mails to the clockwise direction side, send toward 224.8.1.4 multi-broadcast group IP.Signaling send mode and signaling TTL are provided with as shown in the table:
| Signaling | Multi-broadcast group IP | TTL is provided with |
| Counter clockwise direction side major diameter (LL) | 224.8.1.1 | 1 |
| Clockwise direction side major diameter | 224.8.1.2 | 1 |
| (LR) | ||
| Counter clockwise direction side minor axis (SL) | 224.8.1.3 | 4 |
| Clockwise direction side minor axis (SR) | 224.8.1.4 | 4 |
Because the A among Fig. 2 to the optical fiber of B direction mistake has taken place, the B network element needs to clockwise direction through B, C, D, A to the major diameter signaling that the A network element sends.Promptly; The APS controller is encapsulated as the form of multicast IP bag with the major diameter signaling in the B network element, sends to the Ethernet interface 3 of the path control deivce in the B network element through Ethernet interface 4, and its purpose IP address extends this as 224.8.1.2 (LR); Transmit to carry out multicast through clockwise direction side major diameter multi-broadcast group; And TTL is set to 1, so that said major diameter signaling multicast IP bag can only arrive first the adjacent Automatic Protection Switching Control on the major diameter, and then guarantees that each node receives the sequencing of packet.The path control deivce of B network element is received packet from Ethernet interface 3, table of query and routing, and the route of the numbering 3 that obtains conforming to through purpose IP and source IP inquiry, and according to this route packet is sent from Ethernet interface 2.The C network element utilizes optical fiber to receive the multicast IP bag of the major diameter signaling that the B network element sends from Ethernet interface 1; Same table of query and routing; The route that obtains mating, is transmitted toward Ethernet interface 3 then according to this route for the route of numbering 4; Just through Ethernet interface 4 packet is issued local APS controller, TTL is kept to 0.The APS controller of C network element is handled the major diameter signaling of receiving, and after TTL was set to 1 again, the major diameter signaling multicast IP that transparent transmission is received wrapped the Ethernet interface 3 of the path control deivce of C network element.At this moment, the same table of query and routing of the path control deivce of C network element, and send this major diameter signaling multicast IP from Ethernet interface 2 and wrap.The D network element is received the major diameter signaling multicast IP bag that the C network element sends from Ethernet interface 1, utilizes the route of numbering 4 in the routing table, transmits toward Ethernet interface 3, just has been given to the APS controller of D network element, and TTL is kept to 0.The APS controller of D network element is handled the major diameter signaling of being received, and after TTL was set to 1 again, the major diameter signaling multicast IP that transparent transmission is received wrapped the Ethernet interface 3 of the path control deivce of D network element.Same through table of query and routing, send from the Ethernet interface 2 of the path control deivce of D network element, the A network element is received the packet that the D network element sends from Ethernet interface 1; Utilize the route of numbering 4, transmit, just be given to the APS controller of A network element toward Ethernet interface 3; Pass through said process; The A network element has been received the major diameter signaling, simultaneously through to the setting of life span field, can guarantee that each node receives the sequential of major diameter signaling.
And the process of transmitting of minor axis signaling is similar with the process of transmitting of major diameter signaling, and the minor axis signaling that sends to the A network element is also by way of B, C, D, A, and " minor axis " notion of this moment only is meant, only needs the signaling of a unique node processing of the minor axis section of striding opposite side.B network element APS controller wraps the minor axis signaling with multicast IP mode mails to the Ethernet interface 3 of path control deivce, and its purpose IP fills in 224.8.1.4 in the address, owing to comprise 4 nodes in the protection group of the ring network of present embodiment, so TTL is set to 4.The path control deivce of B network element is received signaling from Ethernet interface 3, table of query and routing, and the route of the numbering 7 that obtains mating through purpose IP and source IP inquiry then according to this route, is sent the minor axis signaling from Ethernet interface 2, and TTL is kept to 3.The C network element is received the minor axis signaling from Ethernet interface 1, utilizes the route of numbering 8 in the routing table, transmits toward Ethernet interface 3, transmits to Ethernet interface 2 simultaneously, and TTL is kept to 2.The APS controller of C network element is received this minor axis signaling, and the signaling that identifies in this message is the minor axis signaling that will give the minor axis signaling of A network element rather than give oneself, therefore abandons this message.The D network element is received the minor axis signaling from Ethernet interface 1, utilizes the route of numbering 8 in the routing table, transmits toward Ethernet interface 3, transmits to Ethernet interface 2 simultaneously, and TTL is kept to 1.The APS controller of D network element is received this minor axis signaling, and the signaling that identifies in this message is the minor axis signaling that will give the minor axis signaling of A network element rather than give oneself, therefore abandons this message.The path control deivce of A network element is received the minor axis signaling from Ethernet interface 1; According to the route of numbering 8, transmit toward Ethernet interface 3, just be transmitted to the APS controller of A network element; This moment, the signaling that identifies in this message of APS controller of A network element was the minor axis signaling that will give oneself; Need to handle this message, this moment, the TTL of IP bag became 0, no longer sent toward Ethernet interface 2.Through said process, the A network element has been received the minor axis signaling.
Through said method of the present invention and device, the major diameter signaling is transmitted according to the hop-by-hop mode, effectively controlled the sequential of each network element reception major diameter signaling, improved the reliability of APS greatly.
Can add the multicast route automatically through path control deivce, need not save manpower, also strengthen the automaticity of network configuration through the webmaster manual type to path control deivce configuration multicast route.
Below only be used to describe execution mode of the present invention, and be not used in qualification the present invention, the change that those of ordinary skills can be correlated with according to this specification, it still belongs within protection scope of the present invention.
Claims (9)
1. multi-broadcast communication method of realizing APS; Be used for the ring light communication network; Each node that wherein is in the ring network in the same protection group all comprises interconnective Automatic Protection Switching Control and path control deivce; Simultaneously webmaster be the major diameter signaling multi-broadcast group of sending to the major diameter signaling multi-broadcast group of counterclockwise sending, to clockwise direction, to the minor axis signaling multi-broadcast group of counterclockwise sending, to the minor axis signaling multi-broadcast group of clockwise direction transmission; Distributed multi-broadcast group IP address, it is characterized in that
The Automatic Protection Switching Control of all nodes of said protection group adds said four multi-broadcast group automatically after startup;
The path control deivce of all nodes of said protection group is respectively said four multi-broadcast group IP address assignment routes after startup;
When the Automatic Protection Switching Control of a node of said protection group is received fault alarm; When needing to send the APS request; Be packaged into major diameter signaling multicast IP bag to the major diameter signaling; Life span field to the heading of said major diameter signaling multicast IP bag is provided with so that said major diameter signaling multicast IP bag can only arrive first the adjacent Automatic Protection Switching Control on the major diameter, and sends to the major diameter signaling multi-broadcast group IP address along the major diameter path; Be packaged into minor axis signaling multicast IP bag to the minor axis signaling, and the life span field of the heading of said minor axis signaling multicast IP bag is made as the node number in the said protection group, send to minor axis signaling multi-broadcast group IP address along the major diameter path.
2. the method for claim 1 is characterized in that, the path control deivce of all nodes of said protection group is that the route of said four multi-broadcast group IP address assignments comprises:
The purpose IP address of multicast IP bag is the major diameter signaling multi-broadcast group IP address of sending to counterclockwise, and source IP address is local port IP address, and the IP bag is transmitted toward the non-local port of side counterclockwise;
The purpose IP address of multicast IP bag is the major diameter signaling multi-broadcast group IP address of sending to counterclockwise, and source IP address is non-local port IP address, and the IP bag is transmitted to local Automatic Protection Switching Control;
The purpose IP address of multicast IP bag is the major diameter signaling multi-broadcast group IP address of sending to clockwise direction, and source IP address is local port IP address, and the IP bag is transmitted toward the non-local port of clockwise direction side;
The purpose IP address of multicast IP bag is the major diameter signaling multi-broadcast group IP address of sending to clockwise direction, and source IP address is non-local port IP address, and the IP bag is transmitted to local Automatic Protection Switching Control;
The purpose IP address of multicast IP bag is the minor axis signaling multi-broadcast group IP address of sending to counterclockwise, and source IP address is local port IP address, and the IP bag is transmitted toward the non-local port of side counterclockwise;
The purpose IP address of multicast IP bag is the minor axis signaling multi-broadcast group IP address of sending to counterclockwise; And source IP address is non-local port IP address, and the IP bag is transmitted to local Automatic Protection Switching Control and is transmitted to the non-local port of side counterclockwise simultaneously;
The purpose IP address of multicast IP bag is the minor axis signaling multi-broadcast group IP address of sending to clockwise direction, and source IP address is local port IP address, and the IP bag is transmitted toward the non-local port of clockwise direction side;
The purpose IP address of multicast IP bag is the minor axis signaling multi-broadcast group IP address of sending to clockwise direction; And source IP address is non-local port IP address, and the IP bag is transmitted to local Automatic Protection Switching Control and is transmitted to the non-local port of clockwise direction side simultaneously.
3. method as claimed in claim 2 is characterized in that, said major diameter signaling multicast IP bag or minor axis signaling multicast IP bag are transmitted according to corresponding route in the path control deivce of each node of said protection group.
4. method as claimed in claim 2; It is characterized in that; The Automatic Protection Switching Control of each node of said protection group is tested to the said minor axis signaling multicast IP bag that receives, and if not sending to oneself, abandons said minor axis signaling multicast IP bag; If send to oneself, said minor axis signaling multicast IP bag is handled.
5. multi-casting communication device of realizing APS; Be used for the ring light communication network; The minor axis signaling multi-broadcast group that webmaster is respectively the major diameter signaling multi-broadcast group of sending to the major diameter signaling multi-broadcast group of counterclockwise sending, to clockwise direction, sends to the minor axis signaling multi-broadcast group of counterclockwise sending, to clockwise direction; Distributed multi-broadcast group IP address, it is characterized in that
Each node that said ring network is in the same protection group all comprises interconnective Automatic Protection Switching Control and path control deivce;
Said path control deivce is used to be respectively said four multi-broadcast group IP address assignment routes;
Said Automatic Protection Switching Control adds said four multi-broadcast group automatically after startup; And be used for receiving fault alarm; When needing to send the APS request; Be packaged into major diameter signaling multicast IP bag to the major diameter signaling, the life span field of the heading of said major diameter signaling multicast IP bag be provided with so that said major diameter signaling multicast IP bag can only arrive first the adjacent Automatic Protection Switching Control on the major diameter, and send to major diameter signaling multi-broadcast group IP address along the major diameter path; Be packaged into minor axis signaling multicast IP bag to the minor axis signaling, and the life span field of the heading of said minor axis signaling multicast IP bag is made as the node number in the said protection group, send to minor axis signaling multi-broadcast group IP address along the major diameter path.
6. device as claimed in claim 5; It is characterized in that; Path control deivce in each node in the said protection group all passes through local port and is connected with the port of local Automatic Protection Switching Control, is connected through the port of non-local port with the path control deivce of adjacent node.
7. device as claimed in claim 6 is characterized in that, said path control deivce is that the route of four multi-broadcast group IP address assignments comprises:
The purpose IP address of multicast IP bag is the major diameter signaling multi-broadcast group IP address of sending to counterclockwise, and source IP address is local port IP address, and the IP bag is transmitted toward the non-local port of side counterclockwise;
The purpose IP address of multicast IP bag is the major diameter signaling multi-broadcast group IP address of sending to counterclockwise, and source IP address is non-local port IP address, and the IP bag is transmitted to local Automatic Protection Switching Control;
The purpose IP address of multicast IP bag is the major diameter signaling multi-broadcast group IP address of sending to clockwise direction, and source IP address is local port IP address, and the IP bag is transmitted toward the non-local port of clockwise direction side;
The purpose IP address of multicast IP bag is the major diameter signaling multi-broadcast group IP address of sending to clockwise direction, and source IP address is non-local port IP address, and the IP bag is transmitted to local Automatic Protection Switching Control;
The purpose IP address of multicast IP bag is the minor axis signaling multi-broadcast group IP address of sending to counterclockwise, and source IP address is local port IP address, and the IP bag is transmitted toward the non-local port of side counterclockwise;
The purpose IP address of multicast IP bag is the minor axis signaling multi-broadcast group IP address of sending to counterclockwise; And source IP address is non-local port IP address, and the IP bag is transmitted to local Automatic Protection Switching Control and is transmitted to the non-local port of side counterclockwise simultaneously;
The purpose IP address of multicast IP bag is the minor axis signaling multi-broadcast group IP address of sending to clockwise direction, and source IP address is local port IP address, and the IP bag is transmitted toward the non-local port of clockwise direction side;
The purpose IP address of multicast IP bag is the minor axis signaling multi-broadcast group IP address of sending to clockwise direction; And source IP address is non-local port IP address, and the IP bag is transmitted to local Automatic Protection Switching Control and is transmitted to the non-local port of clockwise direction side simultaneously.
8. device as claimed in claim 5 is characterized in that, each node in the said protection group is transmitted the major diameter signaling multicast IP bag or the minor axis signaling multicast IP bag that receive according to the relative route that is comprised in the path control deivce separately.
9. device as claimed in claim 5; It is characterized in that; The Automatic Protection Switching Control of each node of said protection group is used to check the said minor axis signaling multicast IP bag that receives, and if not sending to oneself, abandons said minor axis signaling multicast IP bag; If send to oneself, said minor axis signaling multicast IP bag is handled.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101674222B (en) * | 2008-09-10 | 2013-01-30 | 华为技术有限公司 | Multicast switching method and system |
| CN102170397B (en) * | 2011-05-09 | 2016-09-28 | 中兴通讯股份有限公司 | A kind of pretection switch optimization method controlled based on life span (TTL) and device |
| CN105577405A (en) * | 2014-10-15 | 2016-05-11 | 武汉中兴软件有限责任公司 | Method, device and system for reducing centralized protection switching time of POTN system |
| CN105656541B (en) * | 2014-11-11 | 2019-09-06 | 武汉中兴软件有限责任公司 | Dispositions method, device and the Network Management System of optical network protection controller |
| CN109005116B (en) * | 2017-06-07 | 2020-07-24 | 华为技术有限公司 | Message forwarding method and device |
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|---|---|---|---|---|
| JP2000022630A (en) * | 1998-07-01 | 2000-01-21 | Hitachi Ltd | Self-rescue optical network |
| CN1734994A (en) * | 2004-08-13 | 2006-02-15 | 中兴通讯股份有限公司 | Realization device for protecting replace protocol using IP communication mode and its method |
| CN1791049A (en) * | 2005-12-16 | 2006-06-21 | 杭州华为三康技术有限公司 | Looped network and its protecting method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000022630A (en) * | 1998-07-01 | 2000-01-21 | Hitachi Ltd | Self-rescue optical network |
| CN1734994A (en) * | 2004-08-13 | 2006-02-15 | 中兴通讯股份有限公司 | Realization device for protecting replace protocol using IP communication mode and its method |
| CN1791049A (en) * | 2005-12-16 | 2006-06-21 | 杭州华为三康技术有限公司 | Looped network and its protecting method |
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