CN104270231A - System and method for realizing double-node interconnected pseudo-wire - Google Patents
System and method for realizing double-node interconnected pseudo-wire Download PDFInfo
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- CN104270231A CN104270231A CN201410452728.8A CN201410452728A CN104270231A CN 104270231 A CN104270231 A CN 104270231A CN 201410452728 A CN201410452728 A CN 201410452728A CN 104270231 A CN104270231 A CN 104270231A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/68—Pseudowire emulation, e.g. IETF WG PWE3
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/22—Arrangements for detecting or preventing errors in the information received using redundant apparatus to increase reliability
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/22—Alternate routing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/50—Routing or path finding of packets in data switching networks using label swapping, e.g. multi-protocol label switch [MPLS]
Abstract
The invention discloses a system and a method for realizing a double-node interconnected pseudo-wire, and relates to the technical field of application of wireless backhaul networks. The system comprises two bridge nodes, at least one access side node and at least one core side node, wherein the two bridge nodes are connected with each access side node and each core side node respectively; the two bridge nodes are taken as a master node and a standby node; both the master node and the standby node are provided with access side interfaces, double-node interconnected pseudo-wire side interfaces and core side interfaces; any two interfaces on the same bridge node are communicated with each other; a double-node interconnected pseudo-wire side virtual circuit is arranged between the master node and the standby node; access side virtual circuits are arranged between the access side node and the master node as well as between the access side node and the standby node respectively; the double-node interconnected pseudo-wire side virtual circuit and the access side virtual circuits are bound in one double-node interconnected pseudo-wire group; and automatic protection changeover signaling channels are overlapped on the double-node interconnected pseudo-wire side virtual circuit and the access side virtual circuits respectively.
Description
Technical field
The present invention relates to wireless backhaul net application technology field, is specifically a kind of system and method realizing the interconnected pseudo-line of binode.
Background technology
Along with LTE (3GPP Long Term Evolution, 3GPP technology Long Term Evolution) carries out extensive use gradually at home, the wireless backhaul demand for base station data business proposes higher requirement.At present, for its application at wireless backhaul network, conventional business model is that Access Layer disposes L2 network (2 layer network), and core layer disposes L3 network (3 layer network), completes L2 network change to the business of L3 network at aggregation node by bridge joint mouth.
L2 network is a switching network; realize point-to-point communication pipe by pseudo-line technology end to end and carry out business forwarding; in order to realize the route protection to business; also can dispose PW (Pseudo Wire; pseudo-line) redundancy protecting; the superposition that the functions such as LSP (Label Switched Path, label switched path) 1:1 protection are protected L2 Network.
L3 network is an IP transmission network, carries out business forwarding by routing addressing.In L3 network, realized the defencive function of L3 Network by technology such as VPN FRR (Virtual Private Network Fast ReRoute, VPN (virtual private network) Quickly regroup).
In existing network protection model, usually on the basis of PW redundancy protecting, the linear protection of superposition LSP1:1, to prevent L2 link in network communication disruption.But there is following defect in this method: when triggering PW redundancy protecting, down direction perception, less than the link failure of Access Layer, if now still talk about from primary node, will cause service disconnection; And adopt PW redundancy protecting to protect with LSP1:1 the design superposed, the process causing existing network to configure is more complicated, serious waste label resources.
Summary of the invention
For the defect existed in prior art; the object of the present invention is to provide a kind of system and method realizing the interconnected pseudo-line of binode; the present invention, without the need to carrying out the superposition of LSP1:1 protection again, simplifies the protection model in L2 network, improves the stable of defencive function and reliability.
For reaching above object, the technical scheme that the present invention takes is: a kind of system realizing the interconnected pseudo-line of binode, comprise two bridge nodes, at least one access side gusset and at least one core side node, described two bridge nodes access side gusset with each respectively, each core side node is connected, described two bridge nodes are divided into primary node and secondary node, described primary node and secondary node are equipped with access side interface, the interconnected pseudo-line side interface of binode and core side interface, and any two the interface intercommunications on same bridge node; Binode interconnected pseudo-line side virtual circuit is provided with between described primary node and secondary node; access side gusset and primary node, be respectively equipped with between secondary node and access side virtual circuit; described binode interconnected pseudo-line side virtual circuit is bundled in an interconnected pseudo-line group of binode with access side virtual circuit, and binode interconnected pseudo-line side virtual circuit, access side virtual circuit are superimposed with APS signalling path respectively.
On the basis of technique scheme, described bridge node is provided with multiple interface board, and described interface board is provided with virtual bridge, and described virtual bridge comprises 3 interfaces, is respectively L2VE1 interface, L3VE1 interface, L2VE0 interface.
On the basis of technique scheme, described L2VE1 interface is corresponding with access side interface, and L3VE1 interface is corresponding with core side interface, and L2VE0 interface is corresponding with the interconnected pseudo-line side interface of binode; Wherein, L2VE1 interface and L3VE1 interface are a default bridge joint group, be used for the bridge joint of L2 Network interface, L3 Network interface, L2VE0 interface is an interface of the interconnected pseudo-line side of binode, has been used for the bridge joint of L2 Network interface, L3 Network interface.
On the basis of technique scheme, under described L2VE1 interface, binding has at least one logical subinterface, logical subinterface all under L3VE1 interface termination L2VE1 interface, and form the configuration of a termination sub-interface, in the bridge joint group that this L2VE1 interface and L3VE1 interface form, under L2VE1 interface, the business of total interface is default be forwarded to the L3VE1 interface of mapping under.
On the basis of technique scheme, on primary node, the default path of virtual bridge is: up direction, is sent to L3VE1 interface by L2VE1 interface, or is sent to L3VE1 interface by L2VE0 interface; According to type of service, down direction, determines that it is forwarded by L2VE1 interface or L2VE0 interface.
On the basis of technique scheme, on secondary node, the default path of virtual bridge is: up direction, is sent to L2VE0 interface or is sent to L3VE1 interface by L2VE0 interface by L2VE1 interface; When switching, be sent to L3VE1 interface by L2VE1 interface; Down direction, is forwarded by L2VE1 interface.
The present invention also provides a kind of method realizing the interconnected pseudo-line of binode, comprises the following steps: arrange the default operating path of primary node by accessing side interface to core side interface, and the default operating path of secondary node is for access side interface is to core side interface; Between access side gusset and secondary node, complete access side protocol information by pseudo-line APS mutual; By pseudo-line APS information between primary node and secondary node, complete the mutual of state information between main-standby nodes; The Link State of the APS message sended over according to secondary node by the state machine of primary node and primary node and access side, the bridge joint completing bridge node is switched.
On the basis of technique scheme, between access side gusset and primary node, initiate transport layer OAM detect the communications status accessing virtual circuit link between side gusset to primary node; Detected the communications status of virtual circuit link between primary node and secondary node by transport layer OAM between primary node and secondary node.
On the basis of technique scheme, described bridge node is provided with the hot standby function of ARP, by the ARP address that primary node learns, is synchronized in the ARP of secondary node; When primary node failure, downlink business carries out the forwarding of business after arriving secondary node by searching the ARP information that secondary node is synchronously come.
Beneficial effect of the present invention is:
1, the present invention only disposes PW redundancy protecting at Access Layer, without the need to carrying out the superposition of LSP1:1 protection again, simplifies the protection model in L2 network, improves the stable of defencive function and reliability.
2, the present invention is by arranging virtual bridge, and configures primary, spare node for this virtual bridge, can effectively L2 network and L3 network be carried out being connected and associating, and improves business survivability in the entire network.
3, the method for the present invention's employing, by the bridge joint group of L2VE1 interface, L3VE1 interface conjunctionn, its functional realiey is simply effective, to its concrete methods of realizing of user isolation, in system smooth upgrade process, can significantly improve its performance in the situation that user perceptibility is little.
Accompanying drawing explanation
Fig. 1 is the topology diagram of the system realizing the interconnected pseudo-line of binode in the embodiment of the present invention;
Fig. 2 is the simplified model figure of bridge node in the embodiment of the present invention;
Fig. 3 is the dummy model figure of 3 interfaces on bridge node in the embodiment of the present invention.
Accompanying drawing illustrates:
1-accesses side interface; 2-core side interface; The interconnected pseudo-line side interface of 3-binode.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail.
Shown in Figure 1, one realizes DNI-PW (Dual Node InterConnection Pseudo Wire, the interconnected pseudo-line of binode) system, comprise two bridge nodes, at least one accesses side gusset, at least one core side node, wherein, accessing side gusset and core side interstitial content along with the scale of network changes arbitrarily.Described two bridge nodes access side gusset with each respectively, each core side node is connected, described two bridge nodes are divided into primary node and secondary node, described primary node and secondary node are equipped with access side interface 1, the interconnected pseudo-line side interface 3 of binode and core side interface 2, any two the interface intercommunications on same bridge node; Interconnected pseudo-line side VC (the Virtual Circuit of binode is provided with between described primary node and secondary node; virtual circuit); access side gusset and primary node, be provided with between secondary node and access side virtual circuit; described binode interconnected pseudo-line side virtual circuit is bundled in an interconnected pseudo-line group of binode with access side virtual circuit; and binode interconnected pseudo-line side virtual circuit, access side virtual circuit are superimposed with APS (Auto Protect Switch respectively; APS) signalling path, be used for the business that realizes bridge joint protection.
Shown in Figure 2, described bridge node is provided with multiple interface board, described interface board is provided with virtual bridge, the conversion of L2 network to L3 network is realized by virtual bridge, business also carries out forwarding behavior behavior on virtual bridge simultaneously, each virtual bridge is unique on bridge node, and the overall situation does not effectively rely on the concrete board of certain block and uses.
Shown in Figure 3, described virtual bridge comprises 3 interfaces, is respectively L2VE1 interface, L3VE1 interface, L2VE0 interface.Wherein, described L2VE1 interface is corresponding with access side interface 1, and L3VE1 interface is corresponding with core side interface 2, and L2VE0 interface is corresponding with the interconnected pseudo-line side interface 3 of binode; Wherein, L2VE1 interface and L3VE1 interface are a default bridge joint group, be used for the bridge joint of L2 Network interface, L3 Network interface, L2VE0 interface is an interface of the interconnected pseudo-line side of binode, has been used for the bridge joint of L2 Network interface, L2 Network interface.OAM (Operation Administration and Maintenance is passed through by L2VE1 interface and access side gusset, operation maintenance manages) fast detecting link communication state, when access side alarm being detected, associate the interface actions on primary node, L3VE1 interface is pointed to L2VE0 interface.
Under described L2VE1 interface, binding has at least one logical subinterface, logical subinterface all under L3VE1 interface termination L2VE1 interface, and form the configuration of a termination sub-interface, in the bridge joint group that this L2VE1 interface and L3VE1 interface form, under L2VE1 interface, the business of total interface is default be forwarded to the L3VE1 interface of mapping under.When the PW of certain logical subinterface binding under L2VE1 interface lost efficacy, L3VE1 interface downlink switched and only carried out switching action behavior for this inactive logic sub-interface under this L2VE1 interface.
On primary node, the default path of virtual bridge is: up direction, is sent to L3VE1 interface or is sent to L3VE1 interface by L2VE0 interface by L2VE1 interface; According to type of service, down direction, determines that it is forwarded by L2VE1 interface or L2VE0 interface.On secondary node, the default path of virtual bridge is: up direction, is sent to L2VE0 interface or is sent to L3VE1 interface by L2VE0 interface by L2VE1 interface; When switching, be sent to L3VE1 interface by L2VE1 interface; Down direction, is forwarded by L2VE1 interface.
Based on the method realizing the interconnected pseudo-line of binode of said system, comprise the following steps:
Arrange the default operating path of primary node for access side interface 1 to core side interface 2, the default operating path of secondary node is access side interface 1 to core side interface 2.
Between access side gusset and secondary node, complete access side protocol information by PW APS (Pseudo Wire Auto Protect Switch, pseudo-line APS) mutual; By pseudo-line APS information between primary node and secondary node, complete the mutual of state information between main-standby nodes.
The communications status that TP OAM (Transport Operation Administration Maintenance, transport layer operation maintenance manages) detects virtual circuit link between access side gusset to primary node is initiated between access side gusset and primary node; Detected the communications status of virtual circuit link between primary node and secondary node by transport layer OAM between primary node and secondary node.According to state information between access side protocol information and main-standby nodes, the Link State of the APS message sended over according to secondary node by the state machine of primary node and primary node and access side, the bridge joint completing bridge node is switched.
Described bridge node is provided with the hot standby function of ARP (Address Resolution Protocol, address resolution protocol), by the ARP address that primary node learns, is synchronized in the ARP of secondary node; When primary node failure, downlink business carries out the forwarding of business after arriving secondary node by searching the ARP information that secondary node is synchronously come.Be specially: from the business of L3VE1 interface downlink, by ARP information, select corresponding logical subinterface to forward.When index is less than ARP information, triggers the ARP address learning flow process of L3VE1 interface, namely initiatively send ARP request message to downstream node, when receiving the arp response message of response, the ARP information of study mapping.
When two bridge nodes are connected with multiple access side gusset, multiple core side node respectively, described two bridge nodes access side gusset with each respectively, each core side node is connected, and each access side gusset and primary node, are respectively equipped with between secondary node and access side virtual circuit.
The present invention is not limited to above-mentioned execution mode, and for those skilled in the art, under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications are also considered as within protection scope of the present invention.The content be not described in detail in this specification belongs to the known prior art of professional and technical personnel in the field.
Claims (9)
1. one kind realizes the system of the interconnected pseudo-line of binode, comprise two bridge nodes, at least one access side gusset and at least one core side node, described two bridge nodes access side gusset with each respectively, each core side node is connected, it is characterized in that: described two bridge nodes are divided into primary node and secondary node, described primary node and secondary node are equipped with access side interface, the interconnected pseudo-line side interface of binode and core side interface, and any two the interface intercommunications on same bridge node;
Binode interconnected pseudo-line side virtual circuit is provided with between described primary node and secondary node; access side gusset and primary node, be respectively equipped with between secondary node and access side virtual circuit; described binode interconnected pseudo-line side virtual circuit is bundled in an interconnected pseudo-line group of binode with access side virtual circuit, and binode interconnected pseudo-line side virtual circuit, access side virtual circuit are superimposed with APS signalling path respectively.
2. realize the system of the interconnected pseudo-line of binode as claimed in claim 1, it is characterized in that: described bridge node is provided with multiple interface board, described interface board is provided with virtual bridge, described virtual bridge comprises 3 interfaces, be respectively L2VE1 interface, L3VE1 interface, L2VE0 interface.
3. realize the system of the interconnected pseudo-line of binode as claimed in claim 2, it is characterized in that: described L2VE1 interface is corresponding with access side interface, and L3VE1 interface is corresponding with core side interface, and L2VE0 interface is corresponding with the interconnected pseudo-line side interface of binode; Wherein, L2VE1 interface and L3VE1 interface are a default bridge joint group, be used for the bridge joint of L2 Network interface, L3 Network interface, L2VE0 interface is an interface of the interconnected pseudo-line side of binode, has been used for the bridge joint of L2 Network interface, L3 Network interface.
4. realize the system of the interconnected pseudo-line of binode as claimed in claim 3, it is characterized in that: under described L2VE1 interface, binding has at least one logical subinterface, logical subinterface all under L3VE1 interface termination L2VE1 interface, and form the configuration of a termination sub-interface, in the bridge joint group that this L2VE1 interface and L3VE1 interface form, under L2VE1 interface, the business of total interface is default be forwarded to the L3VE1 interface of mapping under.
5. realize the system of the interconnected pseudo-line of binode as claimed in claim 3, it is characterized in that, on primary node, the default path of virtual bridge is: up direction, is sent to L3VE1 interface by L2VE1 interface, or is sent to L3VE1 interface by L2VE0 interface; According to type of service, down direction, determines that it is forwarded by L2VE1 interface or L2VE0 interface.
6. realize the system of the interconnected pseudo-line of binode as claimed in claim 3, it is characterized in that, on secondary node, the default path of virtual bridge is: up direction, is sent to L2VE0 interface or is sent to L3VE1 interface by L2VE0 interface by L2VE1 interface; When switching, be sent to L3VE1 interface by L2VE1 interface; Down direction, is forwarded by L2VE1 interface.
7., based on the method realizing the interconnected pseudo-line of binode of system described in claim 1, it is characterized in that, comprise the following steps:
Arrange the default operating path of primary node by accessing side interface to core side interface, the default operating path of secondary node is for access side interface is to core side interface;
Between access side gusset and secondary node, complete access side protocol information by pseudo-line APS mutual; By pseudo-line APS information between primary node and secondary node, complete the mutual of state information between main-standby nodes;
The Link State of the APS message sended over according to secondary node by the state machine of primary node and primary node and access side, the bridge joint completing bridge node is switched.
8. realize the method for the interconnected pseudo-line of binode as claimed in claim 7, it is characterized in that:
Between access side gusset and primary node, initiate transport layer OAM detect the communications status accessing virtual circuit link between side gusset to primary node;
Detected the communications status of virtual circuit link between primary node and secondary node by transport layer OAM between primary node and secondary node.
9. realize the method for the interconnected pseudo-line of binode as claimed in claim 7, it is characterized in that: described bridge node is provided with the hot standby function of ARP, by the ARP address that primary node learns, be synchronized in the ARP of secondary node; When primary node failure, downlink business carries out the forwarding of business after arriving secondary node by searching the ARP information that secondary node is synchronously come.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410452728.8A CN104270231B (en) | 2014-09-05 | 2014-09-05 | A kind of system and method for realizing binode interconnection pseudo-wire |
| PCT/CN2015/088845 WO2016034127A1 (en) | 2014-09-05 | 2015-09-02 | System and method for achieving dual-node interconnection pseudo-wire |
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| CN201410452728.8A CN104270231B (en) | 2014-09-05 | 2014-09-05 | A kind of system and method for realizing binode interconnection pseudo-wire |
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| CN104270231B CN104270231B (en) | 2018-02-16 |
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| CN104753722A (en) * | 2015-04-08 | 2015-07-01 | 烽火通信科技股份有限公司 | DNI-PW (double node interconnection-pseudo wire) quick changeover implementing method and DNI-PW quick changeover implementing system |
| CN104796331A (en) * | 2015-04-29 | 2015-07-22 | 烽火通信科技股份有限公司 | LSP and VC layered protection method through single exchange system |
| WO2016034127A1 (en) * | 2014-09-05 | 2016-03-10 | 烽火通信科技股份有限公司 | System and method for achieving dual-node interconnection pseudo-wire |
| WO2016192269A1 (en) * | 2015-06-04 | 2016-12-08 | 中兴通讯股份有限公司 | Method and apparatus for pseudo wire dual-homing protection of packet transport network device |
| CN109787895A (en) * | 2019-03-29 | 2019-05-21 | 烽火通信科技股份有限公司 | A kind of dual-homing protection method, access node, equipment and communication network |
| CN110572317A (en) * | 2019-07-16 | 2019-12-13 | 烽火通信科技股份有限公司 | Method and system for realizing dynamic ARP hot backup in telecommunication network |
| CN111800525A (en) * | 2020-09-07 | 2020-10-20 | 广东睿江云计算股份有限公司 | Gateway redundancy method and system |
| CN112187634A (en) * | 2020-09-17 | 2021-01-05 | 武汉烽火技术服务有限公司 | VRRP transverse connection protection method and system |
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| CN109787895A (en) * | 2019-03-29 | 2019-05-21 | 烽火通信科技股份有限公司 | A kind of dual-homing protection method, access node, equipment and communication network |
| WO2020199421A1 (en) * | 2019-03-29 | 2020-10-08 | 烽火通信科技股份有限公司 | Dual-homing protection method, access node, device and communication network |
| CN110572317A (en) * | 2019-07-16 | 2019-12-13 | 烽火通信科技股份有限公司 | Method and system for realizing dynamic ARP hot backup in telecommunication network |
| CN110572317B (en) * | 2019-07-16 | 2022-04-08 | 烽火通信科技股份有限公司 | Method and system for realizing dynamic ARP hot backup in telecommunication network |
| CN111800525A (en) * | 2020-09-07 | 2020-10-20 | 广东睿江云计算股份有限公司 | Gateway redundancy method and system |
| CN112187634A (en) * | 2020-09-17 | 2021-01-05 | 武汉烽火技术服务有限公司 | VRRP transverse connection protection method and system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104270231B (en) | 2018-02-16 |
| WO2016034127A1 (en) | 2016-03-10 |
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