CN104270231B - A kind of system and method for realizing binode interconnection pseudo-wire - Google Patents
A kind of system and method for realizing binode interconnection pseudo-wire Download PDFInfo
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- CN104270231B CN104270231B CN201410452728.8A CN201410452728A CN104270231B CN 104270231 B CN104270231 B CN 104270231B CN 201410452728 A CN201410452728 A CN 201410452728A CN 104270231 B CN104270231 B CN 104270231B
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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
- H04L45/68—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
- 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
A kind of system and method for realizing binode interconnection pseudo-wire, it is related to wireless backhaul net application technology field, the system includes two bridge nodes, at least one access side gusset and at least one core side gusset, two bridge nodes are connected with each access side gusset, each core side gusset respectively, two bridge nodes are divided into primary node and secondary node, access side interface, the pseudo- line side interface of binode interconnection and core side interface, and any two interface intercommunication on same bridge node are equipped with primary node and secondary node；Binode is provided between primary node and secondary node and interconnects pseudo- line side virtual circuit; access side virtual circuit is respectively equipped between access side gusset and primary node, secondary node; binode interconnects pseudo- line side virtual circuit and is bundled in access side virtual circuit in a binode interconnection pseudo-wire group, and is superimposed with APS signalling path respectively on the pseudo- line side virtual circuit of binode interconnection, access side virtual circuit.
Description
Technical field
It is specifically a kind of to realize that binode interconnects pseudo-wire the present invention relates to wireless backhaul net application technology field
System and method.
Background technology
As LTE (3GPP Long Term Evolution, 3GPP technologies Long Term Evolution) gradually carries out at home
Extensive use, higher requirement is proposed for the wireless backhaul demand of base station data business.At present, for it in wireless backhaul net
The application of network, it is that Access Layer disposes L2 networks (2 layer network) to commonly use business model, and core layer disposes L3 networks (3 layer network),
The business that aggregation node completes L2 networks to L3 networks by bridging mouth is changed.
L2 networks are an exchange network, realize that point-to-point communication pipe carries out business by pseudo- line technology end to end
Forwarding, in order to realize the route protection to business, can also dispose PW (Pseudo Wire, pseudo-wire) redundancy protecting, LSP (Label
Switched Path, label switched path) 1:The superposition that the functions such as 1 protection are protected to L2 Networks.
L3 networks are an IP forwarding networks, and business forwarding is carried out by routing addressing.In L3 networks, pass through VPN
The technologies such as FRR (Virtual Private Network Fast ReRoute, the quick heavy-route of VPN) realize L3
The defencive function of Network.
In existing network protection model, generally on the basis of PW redundancy protectings, LSP1 is superimposed：1 linear protection,
To prevent L2 link in network communication disruptions.But there is following defect in this method：When triggering PW redundancy protectings, down direction
The link failure less than Access Layer is perceived, if now still being talked about under primary node, service disconnection will be caused；It is and superfluous using PW
Remaining protection and LSP1：The design of 1 protection superposition, the process for causing existing network to configure is more complicated, serious waste label resources.
The content of the invention
For defect present in prior art, realize that binode interconnects pseudo-wire it is an object of the invention to provide a kind of
System and method, the present invention without carrying out LSP1 again：The superposition of 1 protection, simplifies the protection model in L2 networks, improves guarantor
The stabilization and reliability of protective function.
To achieve the above objectives, the present invention adopts the technical scheme that：A kind of system for realizing binode interconnection pseudo-wire, bag
Include two bridge nodes, at least one access side gusset and at least one core side gusset, described two bridge nodes respectively with it is each
Individual access side gusset, each core side gusset are connected, and described two bridge nodes are divided into primary node and secondary node, the master
Side interface, the pseudo- line side interface of binode interconnection and core side interface are accessed with being equipped with node and secondary node, and same bridge
Any two interface intercommunication on node；Binode is provided between the primary node and secondary node and interconnects pseudo- line side
Virtual circuit, access between side gusset and primary node, secondary node and be respectively equipped with access side virtual circuit, the binode interconnection is pseudo-
Line side virtual circuit is bundled in a binode interconnection pseudo-wire group with access side virtual circuit, and binode interconnects the empty electricity of pseudo- line side
APS signalling path is superimposed with respectively on road, access side virtual circuit.
On the basis of above-mentioned technical proposal, the bridge node is provided with multiple interface boards, is set on the interface board
There is virtual bridge, the virtual bridge includes 3 interfaces, respectively L2VE1 interfaces, L3VE1 interfaces, L2VE0 interfaces.
On the basis of above-mentioned technical proposal, the L2VE1 interfaces are corresponding with access side interface, L3VE1 interfaces and core
Side interface is corresponding, and L2VE0 interfaces are corresponding with the pseudo- line side interface of binode interconnection；Wherein, L2VE1 interfaces and L3VE1 interfaces are one
Individual default bridge joint group, for completing the bridge joint of L2 Networks interface, L3 Network interfaces, L2VE0 interfaces are that binode is mutual
Join an interface of pseudo- line side, for completing the bridge joint of L2 Networks interface, L3 Network interfaces.
Being bound on the basis of above-mentioned technical proposal, under the L2VE1 interfaces has at least one logical subinterface, L3VE1
All logical subinterface under interface termination L2VE1 interfaces, and form a termination sub-interface configuration, the L2VE1 interfaces with
In the bridge joint group of L3VE1 interfaces composition, under L2VE1 interfaces under the default L3VE1 interfaces for being forwarded to mapping of the business of total interface.
On the basis of above-mentioned technical proposal, the default path of virtual bridge is on primary node：Up direction, by L2VE1
Interface is sent to L3VE1 interfaces, or is sent by L2VE0 interfaces to L3VE1 interfaces；Down direction, determined according to type of service
It is forwarded by L2VE1 interfaces or L2VE0 interfaces.
On the basis of above-mentioned technical proposal, the default path of virtual bridge is on secondary node：Up direction, by L2VE1
Interface sends to L2VE0 interfaces or sent by L2VE0 interfaces to L3VE1 interfaces；When switching, by L2VE1 interfaces send to
L3VE1 interfaces；Down direction, forwarded by L2VE1 interfaces.
The present invention also provides a kind of method for realizing binode interconnection pseudo-wire, comprises the following steps：Primary node is set
For default operating path by access side interface to core side interface, the default operating path of secondary node is access side interface to core
Side interface；Access between side gusset and secondary node, completing access side protocol information by pseudo-wire APS interacts；It is main
With by pseudo-wire APS information, completing the interaction of status information between main-standby nodes between node and secondary node；By
The APS message and primary node and access side that the state machine of primary node sends over according to secondary node
Link State, the bridge joint for completing bridge node are switched.
On the basis of above-mentioned technical proposal, transport layer OAM detections are initiated between access side gusset and primary node and are connect
Enter side gusset to the communications status of virtual circuit link between primary node；Pass through transport layer between primary node and secondary node
OAM detects the communications status of virtual circuit link between primary node and secondary node.
On the basis of above-mentioned technical proposal, the bridge node is provided with the hot standby functions of ARP, i.e., primary node is gone to school
The ARP addresses practised, are synchronized in the ARP of secondary node；When primary node failure, downlink business reaches secondary node
Afterwards, the ARP information synchronously to be come on secondary node by searching carries out the forwarding of business.
The beneficial effects of the present invention are：
1st, the present invention only disposes PW redundancy protectings in Access Layer, without carrying out LSP1 again：The superposition of 1 protection, simplifies L2
Protection model in network, improve the stabilization and reliability of defencive function.
2nd, the present invention configures primary, spare node by setting virtual bridge, and for the virtual bridge, can be effectively by L2 networks
It is connected and is associated with L3 networks, improves the survivability of business in the entire network.
3rd, the method that the present invention uses, by the bridge joint group of L2VE1 interfaces, L3VE1 interface conjunctionns, its function is realized simple
Effectively,, can be in the little situation of user perceptibility during system smooth upgrade to its concrete methods of realizing of user isolation
Its performance can be greatly improved.
Brief description of the drawings
Fig. 1 is to realize that binode interconnects the topology diagram of the system of pseudo-wire 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.
Brief description of the drawings：
1- accesses side interface；2- core side interfaces；3- binodes interconnect pseudo- line side interface.
Embodiment
The present invention is described in further detail below in conjunction with drawings and Examples.
Shown in Figure 1, one kind realizes DNI-PW (Dual Node InterConnection Pseudo Wire, binodal
Point interconnection pseudo-wire) system, including two bridge nodes, it is at least one access side gusset, at least one core side gusset, wherein,
Access side gusset arbitrarily changes with core side interstitial content with the scale of network.Described two bridge nodes connect with each respectively
Enter side gusset, each core side gusset is connected, described two bridge nodes are divided into primary node and secondary node, the primary section
Access side interface 1 is equipped with point and secondary node, binode interconnects pseudo- line side interface 3 and core side interface 2, same bridge node
On any two interface intercommunication；Binode is provided between the primary node and secondary node and interconnects pseudo- line side VC
(Virtual Circuit, virtual circuit), access between side gusset and primary node, secondary node and be provided with access side virtual circuit, institute
State the pseudo- line side virtual circuit of binode interconnection to be bundled in a binode interconnection pseudo-wire group with access side virtual circuit, and binode is mutual
Join pseudo- line side virtual circuit, access side virtual circuit on be superimposed with APS (Auto Protect Switch, APS) respectively
Signalling path, for realizing that the bridge joint of business is protected.
Shown in Figure 2, the bridge node is provided with multiple interface boards, and the interface board is provided with virtual bridge, leads to
Cross virtual bridge and realize conversion of the L2 networks to L3 networks, while business also carries out forwarding behavior behavior, Mei Gexu on virtual bridge
It is unique on bridge node to intend bridge, it is global effectively to be used independent of the specific board of certain block.
Shown in Figure 3, the virtual bridge includes 3 interfaces, and respectively L2VE1 interfaces, L3VE1 interfaces, L2VE0 connects
Mouthful.Wherein, the L2VE1 interfaces with access side interface 1 it is corresponding, L3VE1 interfaces are corresponding with core side interface 2, L2VE0 interfaces and
Binode interconnects the pseudo- correspondence of line side interface 3；Wherein, L2VE1 interfaces and L3VE1 interfaces are a default bridge joint group, for completing
The bridge joint of L2 Networks interface, L3 Network interfaces, L2VE0 interfaces are the interface that binode interconnects pseudo- line side, are used
To complete the bridge joint of L2 Networks interface, L2 Network interfaces.OAM is passed through by L2VE1 interfaces and access side gusset
(Operation Administration and Maintenance, operation maintenance management) quick detection link communication state,
When detecting the alarm of access side, the interface actions on primary node are associated, L3VE1 interfaces are pointed into L2VE0 interfaces.
Binding has at least one logical subinterface under the L2VE1 interfaces, owns under L3VE1 interfaces termination L2VE1 interfaces
Logical subinterface, and formed one termination sub-interface configuration, the L2VE1 interfaces and L3VE1 interfaces composition bridge joint group in,
Under L2VE1 interfaces under the default L3VE1 interfaces for being forwarded to mapping of the business of total interface.When some logic under L2VE1 interfaces
During the PW failures of interface binding, the switching of L3VE1 interface downlinks is carried out only for the inactive logic sub-interface under the L2VE1 interfaces
Switching action behavior.
The default path of virtual bridge is on primary node：Up direction, sent by L2VE1 interfaces to L3VE1 interfaces or
Sent by L2VE0 interfaces to L3VE1 interfaces；Down direction, determine that it is connect by L2VE1 interfaces or L2VE0 according to type of service
Mouth forwarding.The default path of virtual bridge is on secondary node：Up direction, sent by L2VE1 interfaces to L2VE0 interfaces or by
L2VE0 interfaces are sent to L3VE1 interfaces；When switching, sent by L2VE1 interfaces to L3VE1 interfaces；Down direction, connect by L2VE1
Mouth forwarding.
The method for realizing binode interconnection pseudo-wire based on said system, comprises the following steps：
The default operating path for setting primary node is access side interface 1 to core side interface 2, the default work of secondary node
Make path as access side interface 1 to core side interface 2.
Access between side gusset and secondary node, by PW APS (Pseudo Wire Auto Protect Switch,
Pseudo-wire APS) complete access side protocol information interaction；Protected automatically by pseudo-wire between primary node and secondary node
Protective switching information, complete the interaction of status information between main-standby nodes.
TP OAM (Transport Operation are initiated between access side gusset and primary node
Administration Maintenance, transport layer operation maintenance management) access side gusset is detected to void between primary node
The communications status of hardwired link；Primary node and standby section are detected by transport layer OAM between primary node and secondary node
The communications status of virtual circuit link between point.According to status information between access side protocol information and main-standby nodes, by primary node
The APS message that is sended over according to secondary node of state machine and primary node and the link shape of access side
State, the bridge joint for completing bridge node are switched.
The bridge node is provided with the hot standby work(of ARP (Address Resolution Protocol, address resolution protocol)
Can, i.e., the ARP addresses that will learn on primary node, it is synchronized in the ARP of secondary node；When primary node failure,
After downlink business reaches secondary node, the forwarding of business is carried out by searching the ARP information synchronously to come on secondary node.
Specially：From the business of L3VE1 interface downlinks, by ARP information, corresponding logical subinterface is selected to forward.When
Index less than ARP information when, trigger L3VE1 interfaces ARP address learning flows, i.e., actively send ARP request message to
Downstream node, when receiving the arp response message of response, learn the ARP information of mapping.
When two bridge nodes are connected with multiple access side gussets, multiple core side gussets respectively, described two bridge nodes
It is connected respectively with each access side gusset, each core side gusset, and it is each access side gusset and primary node, standby
Access side virtual circuit is respectively equipped between node.
The present invention is not limited to the above-described embodiments, for those skilled in the art, is not departing from
On the premise of the principle of the invention, some improvements and modifications can also be made, these improvements and modifications are also considered as the protection of the present invention
Within the scope of.The content not being described in detail in this specification belongs to prior art known to professional and technical personnel in the field.
Claims (4)
1. a kind of system for realizing binode interconnection pseudo-wire, including two bridge nodes, at least one access side gusset and at least one
Individual core side gusset, described two bridge nodes are connected with each access side gusset, each core side gusset respectively, its feature
It is：Described two bridge nodes are divided into primary node and secondary node, and access is equipped with the primary node and secondary node
Side interface, binode interconnect pseudo- line side interface and core side interface, and phase intercommunication between any two interface on same bridge node
Letter；
Binode is provided between the primary node and secondary node and interconnects pseudo- line side virtual circuit, access side gusset and primary section
Access side virtual circuit is respectively equipped between point, secondary node, the binode interconnects pseudo- line side virtual circuit and access side virtual circuit
It is bundled in a binode interconnection pseudo-wire group, and is superimposed respectively on the pseudo- line side virtual circuit of binode interconnection, access side virtual circuit
There is APS signalling path；
The bridge node is provided with multiple interface boards, and the interface board is provided with virtual bridge, and the virtual bridge connects including 3
Mouth, respectively L2VE1 interfaces, L3VE1 interfaces, L2VE0 interfaces：The L2VE1 interfaces are corresponding with access side interface, and L3VE1 connects
Mouth is corresponding with core side interface, and L2VE0 interfaces are corresponding with the pseudo- line side interface of binode interconnection；Wherein, L2VE1 interfaces and L3VE1
Interface is a default bridge joint group, for completing the bridge joint of 2 layer network business interfaces, 3 layer network business interfaces, L2VE0 interfaces
An interface of pseudo- line side is interconnected for binode, for completing the bridge joint of 2 layer network business interfaces, 3 layer network business interfaces；
Being bound under the L2VE1 interfaces has at least one logical subinterface, all under L3VE1 interfaces termination L2VE1 interfaces to patrol
Sub-interface is collected, and forms a termination sub-interface configuration, in the bridge joint group that the L2VE1 interfaces and L3VE1 interfaces form,
The business of total interface is default under L2VE1 interfaces is forwarded under corresponding L3VE1 interfaces；
The default path of virtual bridge is on primary node：Up direction, sent by L2VE1 interfaces to L3VE1 interfaces, Huo Zheyou
L2VE0 interfaces are sent to L3VE1 interfaces；Down direction, determine it by L2VE1 interfaces or L2VE0 interfaces according to type of service
Forwarding；
The default path of virtual bridge is on secondary node：Up direction, sent by L2VE1 interfaces to L2VE0 interfaces or by
L2VE0 interfaces are sent to L3VE1 interfaces；When switching, sent by L2VE1 interfaces to L3VE1 interfaces；Down direction, connect by L2VE1
Mouth forwarding.
2. the method for realizing binode interconnection pseudo-wire based on system described in claim 1, it is characterised in that including following step
Suddenly：
The default operating path of primary node is set by access side interface to core side interface, the default operating path of secondary node
For access side interface to core side interface；
Access between side gusset and secondary node, completing access side protocol information by pseudo-wire APS interacts；It is primary
By pseudo-wire APS information between node and secondary node, the interaction of status information between main-standby nodes is completed；
The APS message sended over by the state machine of primary node according to secondary node and primary node are with connecing
Enter the Link State of side, the bridge joint for completing bridge node is switched.
3. the method as claimed in claim 2 for realizing binode interconnection pseudo-wire, it is characterised in that：
Transport layer OAM detections access side gusset is initiated between access side gusset and primary node to virtual circuit between primary node
The communications status of link；
Virtual circuit link between primary node and secondary node is detected by transport layer OAM between primary node and secondary node
Communications status.
4. the method as claimed in claim 2 for realizing binode interconnection pseudo-wire, it is characterised in that：The bridge node is provided with
Function hot standby ARP, is implemented as：The ARP addresses that will learn on primary node, it is synchronized to the ARP of secondary node
In；When primary node failure, after downlink business reaches secondary node, by searching the ARP table synchronously to come on secondary node
Item information carries out the forwarding of business.
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 |
Applications Claiming Priority (1)
| 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 |
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| CN104270231A CN104270231A (en) | 2015-01-07 |
| CN104270231B true CN104270231B (en) | 2018-02-16 |
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| WO (1) | WO2016034127A1 (en) |
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| CN104270231B (en) * | 2014-09-05 | 2018-02-16 | 烽火通信科技股份有限公司 | A kind of system and method for realizing binode interconnection pseudo-wire |
| CN104753722B (en) * | 2015-04-08 | 2018-01-02 | 烽火通信科技股份有限公司 | A kind of DNI PW realization method and systems quickly switched |
| CN104796331B (en) * | 2015-04-29 | 2018-02-16 | 烽火通信科技股份有限公司 | A kind of method that single-swap system realizes LSP and VC layered protections |
| CN106301852B (en) * | 2015-06-04 | 2020-04-03 | 中兴通讯股份有限公司 | Method and device for pseudo wire dual-homing protection of packet transport network equipment |
| CN109787895B (en) * | 2019-03-29 | 2020-10-27 | 烽火通信科技股份有限公司 | Dual-homing protection method, access node, equipment and communication 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 |
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- 2014-09-05 CN CN201410452728.8A patent/CN104270231B/en active Active
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- 2015-09-02 WO PCT/CN2015/088845 patent/WO2016034127A1/en active Application Filing
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| CN101783743A (en) * | 2009-01-19 | 2010-07-21 | 华为技术有限公司 | Business protection method and switching node |
| CN101945001A (en) * | 2009-07-09 | 2011-01-12 | 中兴通讯股份有限公司 | Network protection method and network protection framework |
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| CN104270231A (en) | 2015-01-07 |
| WO2016034127A1 (en) | 2016-03-10 |
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