CN101431701A - Modularization implementing method for T-MPLS control plane - Google Patents
Modularization implementing method for T-MPLS control plane Download PDFInfo
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- CN101431701A CN101431701A CNA2008102395965A CN200810239596A CN101431701A CN 101431701 A CN101431701 A CN 101431701A CN A2008102395965 A CNA2008102395965 A CN A2008102395965A CN 200810239596 A CN200810239596 A CN 200810239596A CN 101431701 A CN101431701 A CN 101431701A
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Abstract
The invention provides a modularization realizing method for T-MPLS control flat. The method defines a control flat function and an interface. The control flat is composed of a connecting control module (CCM), a resource management module (RMM), a route module (RM) and a signaling module. The control flat can complete functions as follows: managing, maintaining and resuming connection; managing distribution of a link resource; calculating and distributing a limited route; controlling transmission and maintenance of the signaling. SOCKET communication mode is used among the control flat modules and the managing flat, a sharing memory mode is used for communicating with the transmitting flat. The invention can realize end-to-end route, signling and protective functions with multiple operations in grouping transmitting network, and reduces connection resumed time greatly.
Description
Technical field
The present invention relates to a kind of modular implementation method of T-MPLS control plane in the optical-fiber network, be applicable to that the grouping that transmits in the network transmits the field.Being particularly related to metropolitan area network inserts and the convergence layer application.
Background technology
Make a general survey of the overall optical network, can divide from zone and two aspects of function.Cut apart from transverse area, the overall optical network can be divided into optical access network, metropolitan area network and three parts of backbone network; Constitute from network function, then can be divided into management plane, control plane and three on transmission plane and be separated from each other and complementary functional module, wherein control plane was not all realized separately in the nineties in 20th century in the past as optional module.
Under the IPization trend of telecommunication service promotes, the transmission network loaded service is from being main to being main the transformation with TDM with IP, the class of business and the quantity that want to satisfy sharp increase in the network based on the communication network of SONET/SDH are more and more difficult, therefore, new technology ASON (ASON) arises at the historic moment.Main different of ASON and traditional transmission network are exactly that management plane and control plane are separated, and have realized independently control plane.
In ASON, control plane mainly is to realize that establishment of connection discharges, detects and safeguard and functions such as the recovery of fault is connected, determined the structure of control plane to form at these calling controls and connection control function, be respectively: connect control unit (CC), route control unit (RC), Link Resource Manager unit (LRM), traffic policy unit (TP), calling network control unit (NetCallC) and agreement control unit (PC) and form.
At present, ITU-T only supports SDH and OTN to transmit the net application about the suggestion of ASON, and is how that the architectural framework expanded packet transmission net of ASON is extremely urgent.Up to now, adopting the ASON architecture is optimal selection as T-MPLS Packet Transport Network architecture frame, present standard only standard the partial function of T-MPLS datum plane, the function of control plane and also needing to realize further research.
Summary of the invention
At above-mentioned deficiency, the invention provides a kind of modular implementation method of T-MPLS control plane.After T-MPLS control plane and other technologies are studied in great detail contrast, in conjunction with existing control plane correlation technique, the principle of combining closely in line with function and module, this method at connection, route, signaling and the resource management function of T-MPLS required realization of control plane in grouping conveying network with control plane abstract be four module, stipulated the interface mode on each intermodule and control plane and other planes simultaneously.This method can efficiently be finished T-MPLS control plane all functions, and can guarantee that transmitting network technology with other interconnects.
A kind of T-MPLS control plane modular implementation method that the present invention proposes, its particular content is as follows:
As shown in Figure 1, the The whole control plane takes out four modules according to function---link control module (CCM), routing module (RM), signalling module (MM) and resource management module (RMM).Each intermodule and with adopting connectionless SOCKET communication mode to carry out information interaction between management plane then adopts serial communication with the communication mode that transmits the plane.Link control module all has interface as nucleus module and other three modules and management plane in four modules, the Link Resource Manager module downwards and transport plane interface is set, upwards interface also is set with management plane, in addition other interfaces are not set.
Among the present invention, link control module mainly realizes the management that connects, the maintenance and the restore funcitons that is connected (business) of connection strategy.Switch in order to carry out source end protection fast when alarm takes place, this module need safeguard that one is the connection of source node and the information bank that passes through the connection of this node with this node, as shown in Figure 2.The also distribution of not responsible time interval resource of this module (tag control and distribution) only sends the related time-slot order to the Link Resource Manager module, is returned by resource module.
The present invention adopts modular mode to realize the T-MPLS control plane; can in Packet Transport Network, realize multiple services end-to-end route, signaling and defencive function; can accelerate connection and set up and protect the speed of switching, save limited bandwidth resources, and can be compatible with existing control plane technology in the data light network.The T-MPLS Packet Transport Network that uses this method also can transmit net with tradition such as SDH and interconnect.
Description of drawings
Mode in conjunction with the drawings is described in detail following example, and above-mentioned and/or other purposes of the present invention and advantage will be more readily apparent from, wherein:
Figure 1 shows that T-MPLS control plane modular construction schematic diagram.
Figure 2 shows that T-MPLS control plane protection reversed process schematic diagram.
201 expression management planes
202 expression link control module inquiry link information tables return route stand-by then.
203 expression link control modules are upgraded the link information table.
Figure 3 shows that T-MPLS control plane module road construction sequential schematic diagram.
Specific embodiments
The present invention in conjunction with the T-MPLS own characteristic, has designed a kind of T-MPLS control plane modular implementation method according to existing control plane technology, and Fig. 1 is T-MPLS control plane modular construction shown in the present always to scheme.
Among Fig. 1, link control module (CCM) mainly contains three big functions, i.e. maintenance of the management of Lian Jieing, connection strategy and the recovery that is connected (business).Resource management module (RMM) is realized based on the LRM draft.This module is safeguarded the transmission that upstream alarm in the connectedness of control channel, the physical connection of check data link, the association of carrying out link attribute information, support downstream and can be carried out fault location to satisfy the demand that protection recovers.Routing module (RM) is realized based on O SPF-TE.Its major function has two: the one, and the distribution of routing iinformation, the one, limited route calculation.Signalling module (MM) is realized based on the RSVP of CR-LDP or expansion.Signalling module is accepted calling of link control module, and the bind command of link control module is converted to corresponding signaling protocol message, carries out the transmission of concrete control signaling and the maintenance of signaling status between each Control Node.Wherein, link control module externally has four big interfaces, be respectively with the interface of routing module, with the interface of resource management module, with the interface of signalling module and with webmaster and user agent's's (management plane) interface, resource management module and management plane also are provided with interface, communication mode all adopts connectionless SOCKET communication, and the communication mode of resource management module and transport plane then adopts serial communication.
In the road construction process, the distribution of the not responsible time interval resource of link control module (tag control and distribution), it just as requested bandwidth send various time slot orders to resource management module, as configuration of reservations, discharge or the like, finish the distribution of time interval resource by resource management module.With reference to T-MPLS control plane module road construction sequential schematic diagram shown in Figure 3, CCM is according to connecting parameter and local connection strategy, earlier to path control deivce request route, routing module can return the satisfied requirement for restriction that connects and (as comprise and get rid of particular link or node, risk group is uncorrelated, time delay restriction etc.) many routes.Reserve certain resource to the application of Link Resource Manager device again according to the route of returning, such as a SDH VC4.Resource management module parameter is as requested finished label distribution best and time good route.If resource reservation success, then begin with the path on other ASON is internodal cooperates, connect controller and attended operation is converted to specific connection set up order, become the RSVP signaling message by interface conversion with the signaling protocol module.Connect to set up successful indication if obtain signaling protocol module downstream node, then the request link resource management module intersects to reserved resource and switches, and connects and sets up successfully, notifies the service controller of link control module.Connect controller and also will the connection status that success is set up be monitored and safeguard, and by reporting connection and the policy configurations that is connected situation and accepts management plane with the interface of webmaster.
The management function of the connection of link control module is meant that this module safeguarded that one is the connection of source node and through the information bank of the connection of this node with this node, after the order that the connection of receiving network management module or user is set up, revises, inquires about, removed, revise connection management information by connecting directory management.After the road construction that receives resource management module as service controller is successfully ordered, the route of newly-built connection and route stand-by information are added in the information table.In like manner after successfully ordering, the road then deletes relevant information if receive to tear open.
After link control module receives the light path alarm that resource management module or signalling module report; link control module can be protected fast according to the route stand-by information of depositing in the above-mentioned information bank and switch, referring to Fig. 2---and T-MPLS control plane protection reversed process schematic diagram.Control module is at first broadcasted away this warning information with this alarm report webmaster and by signalling module, simultaneously information bank is inquired about.If this alarm is from resource management module, the then connection that all these nodes are initiated in the Query Information storehouse is returned and is calculated good respective backup routing iinformation in advance and label information is issued, when the change of receiving bottom is successfully indicated the lastest imformation table and notified webmaster.If this alarm is from signalling module, be whether the connection of source node passes through this malfunctioning node with this node in the link control module Query Information table then, if having then to intersect according to above-mentioned steps switches, but no longer this alarm is flooded.
Claims (7)
1, a kind of modular implementation method of T-MPLS control plane, this method is finished route, signaling, the resource reservation management function of control plane by four big functional modules, and has provided the interface of each intermodule and the same management plane of control plane, transport plane.It is characterized in that:
Functional module partly comprises: link control module (CCM) is used for finishing the management that network connects, the maintenance and the recovery that is connected (business) of connection strategy; Resource management module (RMM) is used to safeguard the transmission that upstream alarm in the connectedness of control channel, the physical connection of check data link, the association of carrying out link attribute information, support downstream and can carries out fault location to satisfy the demand that protection recovers; Routing module (RM) is used to finish the distribution and the limited route calculation of routing iinformation; Signalling module (MM), the conversion, transmission and the signaling status that are used for signaling protocol message are safeguarded.
The interface section comprises: intermodule interface, adopt connectionless SOCKET communication mode to carry out the exchange transmission of information; Control plane adopts connectionless SOCKET communication mode with the management plane interface; Control plane adopts the serial communication mode with the transmission plane interface.
2, the module implementation method of a kind of T-MPLS control plane according to claim 1, it is characterized in that: described link control module externally comprises four big interfaces, is respectively: with the interface of routing module, with the interface of Link Resource Manager device, with the interface of signaling protocol module and with the interface of management plane.
3, the module implementation method of a kind of T-MPLS control plane according to claim 1 is characterized in that: described resource management module external interface comprises: with the interface of link control module, with the interface of management plane and with the interface of transport plane.
4, the module implementation method of a kind of T-MPLS control plane according to claim 1, it is characterized in that: the external interface of described routing module and signalling module only comprises: with the interface of link control module.
5, the module implementation method of a kind of T-MPLS control plane according to claim 1, it is characterized in that: described link control module has safeguarded that one is the connection of source node and the information bank that passes through the connection of this node with this node, after the order that the connection of receiving webmaster or user is set up, revises, inquires about, removed, revise connection management information by connecting directory management.
6, the module implementation method of a kind of T-MPLS control plane according to claim 5, it is characterized in that: the distribution of the not responsible time interval resource of link control module (tag control and distribution), it just as requested bandwidth send various time slot orders to resource management module, as configuration of reservations, release or the like, finish the distribution of time interval resource by resource management module.
7, the module implementation method of a kind of T-MPLS control plane according to claim 5; it is characterized in that: comprise in the link information storehouse and use route and two kinds of information of route stand-by; after receiving the alarm of bottom link failure; end protection strategy in employing source directly extracts route stand-by from the link information storehouse.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107689920A (en) * | 2017-09-28 | 2018-02-13 | 安徽皖通邮电股份有限公司 | A kind of multi-service end to end route cognitive method automatically |
| CN108052399A (en) * | 2017-12-14 | 2018-05-18 | 郑州云海信息技术有限公司 | Method for message transmission and system between a kind of program module |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107689920A (en) * | 2017-09-28 | 2018-02-13 | 安徽皖通邮电股份有限公司 | A kind of multi-service end to end route cognitive method automatically |
| CN108052399A (en) * | 2017-12-14 | 2018-05-18 | 郑州云海信息技术有限公司 | Method for message transmission and system between a kind of program module |
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Open date: 20090513 |