CN101409646B - Method, apparatus, system, network management equipment and node for monitoring performance parameter - Google Patents
Method, apparatus, system, network management equipment and node for monitoring performance parameter Download PDFInfo
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Abstract
The invention discloses a method for monitoring performance parameter, a device, a system, network management equipment and a node thereof, belonging to the technical field of network. The method comprises the following steps: information of network element performance is received; the performance information is contrasted with state parameter information of network element performance; a control plane node acquires information of the network element in performance degradation state according to the contrast result. The device comprises a performance parameter information establishing module and a degradation element information receiving module. The system comprises a first control plane node and a second control plane node. The network management equipment comprises a performance parameter information establishing module, a performance information receiving module, a processing module and a forwarding module. The node comprises a performance parameter information establishing module, a performance information receiving module, a degradation element searching module and a degradation element information acquiring module. The technical proposal leads a control plane to acquire information of the network element in the performance degradation state by monitoring, searching and contrasting the performance information.
Description
Technical field
The present invention relates to networking technology area, particularly a kind of monitoring performance parameter method, device, system, a kind of Network Management Equipment and a kind of control plane node.
Background technology
It is the network of principal character with service-oriented, user oriented that optical transfer network of future generation is one, and it has the intelligent characteristic that a series of traditional communication nets can't be realized, for example fastext assignment, protection recovery automatically, efficient resource distribute or the like.The realization of these functions depends on a powerful control plane.Some important International Standards Organization have all carried out research and have proposed corresponding achievement in research the control plane correlation technique.The ITU-T of International Telecommunications Union has proposed ASON (ASON, Automatically Switched Optical Network) framework and has G.8080 defined the main functional modules in the control plane.Internet engineering task group IETF has proposed general multiple protocols label exchange (GMPLS, Gneralized MultiProtocol Label Switching) system, for the concrete realization of control plane provides foundation.
Control plane changes by distributed node through the partial function that former cause centralized network tube apparatus is accomplished to be accomplished, and has improved networks efficiency.According to ITU-T standard x .700; Network Management Equipment (or network management system) is mainly accomplished five part management functions such as configuration, performance, fault, safety, book keeping operation; But the problem of configuration aspect such as connection management, resource in the Network Management Equipment function found automatically, Route Selection that present control plane function is mainly paid close attention to; Do not consider other aspects as yet, for example performance, fault aspect.
There have been at present some technology and research to pay close attention to the performance monitoring of optical-fiber network; But major side overweights through various physical layer surveillance technologies; Realization is to the monitoring such as internal physical parameters such as fibre loss, chromatic dispersion, nonlinear effects; And adopt physical layer to keep watch on the also mode of modeling analysis more, transmit the various physical influence that the plane receives for lower floor, like influences such as external force or temperature; Control plane does not provide corresponding treatment mechanism at present, and this makes that the promotion and implementation of control plane technology in optical-fiber network of future generation are challenged.
Summary of the invention
In order to realize the performance monitoring of control plane to lower floor's network, the embodiment of the invention has proposed a kind of monitoring performance parameter method, device, system, a kind of Network Management Equipment and a kind of control plane node.Said technical scheme is following:
A kind of monitoring performance parameter method said method comprising the steps of:
Transmit the plane at optical-fiber network transducer is set; Said transducer is monitored the external physical effect that whole transmission plane receives; Wherein, Said external physical effect comprises the relevant factor of effect of factor relevant with the effect of power and heat, and the said factor relevant with power comprises stress, and the said relevant factor of effect with heat comprises temperature;
When network element capabilities changed, said transducer got access to the performance information of the said network element that transmits the plane, and said performance information comprises: node stress parameters, node temperature parameter, link stress parameters and link temperature parameter;
The sensor information control unit produces the first User Data Protocol message comprised said performance information, with the said first User Data Protocol message reporting to Network Management Equipment;
Said Network Management Equipment receives the said first User Data Protocol message; Therefrom extract said performance information; Network element capabilities state parameter information contrast with said performance information and local data base preservation; Confirm to be in the network element of performance degradation state, use the second User Data Protocol message, the said information broadcast that is in the network element of performance degradation state is arrived all control plane nodes;
All control plane nodes receive the said second User Data Protocol message, extract the said information that is in the network element of performance degradation state, search the said connection that is in the network element of performance degradation state of local all processes.
A kind of monitoring performance parameter method said method comprising the steps of:
Transmit the plane at optical-fiber network transducer is set; Said transducer is monitored the external physical effect that whole transmission plane receives; Wherein, Said external physical effect comprises the relevant factor of effect of factor relevant with the effect of power and heat, and the said factor relevant with power comprises stress, and the said relevant factor of effect with heat comprises temperature;
When network element capabilities changed, said transducer got access to the performance information of the said network element that transmits the plane; Said performance information comprises: node stress parameters, node temperature parameter, link stress parameters and link temperature parameter;
The sensor information control unit produces the 3rd User Data Protocol message that has comprised said performance information, and said the 3rd User Data Protocol message is sent to the corresponding control plane node of said network element;
Said control plane node receives said the 3rd User Data Protocol message, therefrom extracts said performance information, starts the route topological information updating, and said performance information is flooded to all control plane nodes through LSA;
The control plane node that receives said LSA reads said performance information; Said performance information and the local performance state parameter information of preserving are contrasted; Confirm to be in the network element of performance degradation state, search the said connection that is in the network element of performance degradation state of local all processes.
The said technical scheme through performance of embodiment of the invention parameter is kept watch on, and searches and contrast performance parameter information, makes control plane obtain certain network element because external action has been in the information of performance degradation state.
Description of drawings
Fig. 1 is 1 flow chart based on the monitoring performance parameter method of Network Management Equipment in the embodiment of the invention;
Fig. 2 is 2 flow charts based on the monitoring performance parameter method of control plane in the embodiment of the invention;
Fig. 3 is typical case that NSP, NTP the expand to LSA sketch map of encoding;
Fig. 4 is typical case that LSP, LTP the expand to LSA sketch map of encoding;
Fig. 5 a is the UDP message format sketch map of communicating by letter between sensor information control unit and the Network Management Equipment;
Fig. 5 b is the UDP message format sketch map of communicating by letter between Network Management Equipment and the control plane node;
Fig. 5 c is the UDP message format sketch map of communicating by letter between sensor information control unit and the control plane node;
Fig. 6 is the form sketch map that control plane starts the LSA packet that floods;
Fig. 7 is based on the sketch map of the monitoring performance parameter system of Network Management Equipment in the embodiment of the invention 1;
Fig. 8 is based on the sketch map of the monitoring performance parameter system of control plane in the embodiment of the invention 2;
Fig. 9 is the sketch map of performance parameter monitoring arrangement in the embodiment of the invention 5;
Figure 10 is the sketch map of performance parameter surveillance in the embodiment of the invention 6;
Figure 11 is the sketch map of control plane node in the embodiment of the invention 7;
Figure 12 is the Network Management Equipment sketch map in the embodiment of the invention 8.
Embodiment
For making the object of the invention, technical scheme and advantage clearer, will combine accompanying drawing that embodiment of the present invention is done further to describe in detail below.
The embodiment of the invention is through setting up the performance state parameter information, for example the performance state parameter list; Obtain performance information,, obtain the network element that is in the performance degradation state said performance information and the contrast of performance state parameter list; The said connection that is in the network element of performance degradation state is protected or is recovered to all processes, has realized fault pre-alarming.
At first carry out following two steps:
One, on the transmission plane a large amount of transducers is set.
The setting of transducer should be according to concrete environment configurations; In the recurrent place of some natural calamities such as rivers flood area, earthquake zone strain gauge should be set more, in the responsive to temperature place as maybe breaking out of fire, the high temperature area should be provided with temperature sensor more.Concrete realization technology both can have been used sensing technologies such as ripe deformation sensing, TEMP, also can utilize current advanced person's sensing technology such as Fibre Optical Sensor, infrared sensing, bio-sensing, wireless sensing etc.Because optical transfer network of future generation is main transmission medium with optical fiber, so Fibre Optical Sensor will have very big application potential.
The implementation that optical-fiber network of future generation transmits the plane mainly is wavelength division multiplexing/dense wave division multipurpose (WDM/DWDM, Wavelength Division Multiplexing/Dense Wavelength Division Multiplexing) network.It is made up of a series of network elements; Comprise the cross interconnected equipment (OXC of light; Optical Cross Connector), light top and bottom path multiplexer (OADM, Optical Add Drop Multiplexer), high-performance router, wavelength multiplexing/demultiplexing equipment and optical fiber link.These network elements are affected their service behaviour owing to receiving various external physical effect of factors.These external physical factors are of a great variety, comprise natural cause such as earthquake, volcano, and weather conditions such as flood, hurricane also have a lot of human-made disasters to damage with artificial.From type of action, can these factors mainly be divided into two big types, one type is the factor relevant with the effect of power, a kind of is the factor relevant with the effect of heat.The external force effect mainly shows as pressure to the influence that transmits the planar network element and increases the little curved even fracture that possibly cause optical fiber link; Thereby the optical loss in the increase link; Also possibly cause the loosening of interface between device interior part dislocation or the equipment and come off; Thereby the receiving terminal luminous power is reduced, and it is big that the error rate becomes; Heat effect mainly shows as the dispersion parameters that influences in the optical fiber to the influence that transmits the planar network element, for example polarization mode dispersion (PMD, Polarization Mode Dispersion), and the noise that increases link and equipment, for example spontaneous emission noise.
External physical effect in that the transducer monitoring The whole control plane of transmitting the plane setting receives when the performance of certain network element changes, in time reports the performance information that perceives.
Two, set up the performance state parameter information.
The performance state parameter information specifically can be the performance state parameter list, and the performance state parameter list has write down each network element in the plane is in normal condition, performance degradation state and malfunction under the external factor influence of what scope the information that transmits.Particularly, transmit in the plane each network element and show different performance state as the time spent receiving the different external factor, possibly be in normal condition, perhaps be in malfunction.For most of network elements, a process is arranged from the normal condition to the malfunction, be called transition state or performance degradation state.With the temperature is example, network element 10 ℃ to 60 ℃ in proper working order, but will break down below 0 ℃ or more than 80 ℃, at interval 0 ℃ to 10 ℃ and 60 ℃ to 80 ℃ is exactly so-called performance degradation state.The performance state parameter list is in each network element in the detail record transmission net information of what state in what temperature range or in what range of stress.
Data all are by Network Management Equipment in the performance state parameter list, be also referred to as NMS (NMS, Network Management System) network lay finish drop into formal operation commercialization before, the actual measurement through strictness obtains.For temperature sensitive network element, performance state parameter list information recorded should be corresponding with temperature characterisitic, the network element that counter stress is responsive, and this form should write down the information of its stress characteristics.As shown in table 1, be performance state parameter list instance, wherein equipment a, b, c, d and link ab1, ab2, ac1, ac2, bd1, bd2 are network element.
Embodiment 1:
The embodiment of the invention provides a kind of monitoring performance parameter method, and is as shown in Figure 7, retention state parameter table in Network Management Equipment, and the information that the related network element has been in the performance degradation state is transmitted to the The whole control plane through Network Management Equipment.This mode is called the realization mechanism based on Network Management Equipment.The form of transmitting can be broadcasting, clean culture or multicast.In the present embodiment, the mode with broadcasting is an example.As shown in Figure 1, concrete steps are following:
Step 101: when certain network element capabilities changed, transducer got access to the performance information of certain network element on up-to-date transmission plane.
Step 102: the sensor information control unit produces UDP (User Data Protocol; User Data Protocol) message; The performance information that has comprised certain network element that transducer gets access in this message, message format are shown in Fig. 5 a, and with this message reporting Network Management Equipment.
Step 103: Network Management Equipment receives the UDP message bag; Therefrom extract the performance state parameter list contrast in up-to-date performance parameter information and the Network Management Equipment database, whether got into the performance deterioration state to confirm the associated network elements that transmits the plane; If not, do not operate; If change next step over to.
Step 104: Network Management Equipment uses the UDP message of another kind of port definition, and shown in Fig. 5 b, the information broadcast that the related network element has been in the performance degradation state is to all control plane nodes.
Step 105: all control plane nodes receive the UDP message of broadcasting; Extract the information of the network element that is in the performance degradation state; Search local all connections through this network element; Affected connection starts signaling message and notifies all relevant connection source nodes, is switched to these connections to protect the path or recomputate optimal path and recovers.If adopt protection (protection) mechanism, then directly switch and get final product; If adopt (restoration) mechanism of recovery; Then the message that source node gets according to broadcasting need connected; Equipment that is in the performance degradation state or link are arranged to " unavailable "; Rerun path calculation module according to this network topology matrix that upgraded again and calculate the optimal path that makes new advances, and the startup signaling message carries out the path switching operation.
In the foregoing description, retention state parameter table in Network Management Equipment, Network Management Equipment is responsible for receptivity information, and just the related network element be in the performance degradation state information broadcast to all control plane nodes.In the present embodiment, as shown in Figure 8, retention state parameter table in the control plane node, and the performance state information of related network element transmitted through the control plane node inform the The whole control plane.This mode is called the realization mechanism based on control plane.The mode of transmitting can be to flood or based on the information sender formula of other signaling.In the present embodiment, be example to flood.As shown in Figure 2, concrete steps are following:
Step 201: when certain network element capabilities changed, transducer got access to the performance information of certain network element on up-to-date transmission plane.
Step 202: the sensor information control unit produces the UDP message, has comprised the performance information of certain network element that transducer gets access in this message, and message format and directly sends to this network element control corresponding plane node with this message shown in Fig. 5 c.For example in Fig. 8, the control corresponding plane node of equipment a or link ab is node A, and then the UDP message of sensor information control unit generation directly sends to node A.
The control plane node is controlled transmitting corresponding equipment and the link in plane; Like the equipment a and the link ab that with equipment a link to each other of control plane node A to the transmission plane; Ac controls, and other control plane node and the equipment that transmits the plane and the relation of link are like Node B and equipment b and link ba; The relation of bd, the rest may be inferred.
Step 203: the control plane node receives the UDP message bag, therefrom extracts up-to-date performance parameter information, and starts the route topological information updating, and this performance information is flooded to all control plane nodes.
As shown in Figure 6 about filling in of the packet that floods of link, in this example, the IP address of supposing control plane node A is 10.10.1.100, and the IP address of Node B is 10.10.1.200.Two link port that transmit between the planar device ab are respectively 1010,1020, and deterioration occurs on 1010 links.
In order in control plane, to realize flooding of performance information, need expand present GMPLS Routing Protocol.At first define four parameters: node stress parameters (NSP; Node Stress Parameter), node temperature parameter (NTP; Node Temperature Parameter), link stress parameters (LSP; Link Stress Parameter), link temperature parameter (LTP, Link Temperature Parameter), expression needs the node of monitoring or the external force factor or the temperature factor of link to influence numerical value respectively.
The value that the expansion of GMPLS Routing Protocol is mainly used in these performance parameters is flooded to all nodes in the network through Routing Protocol, is similar to the notion of shared link risk group (SRLG, Shared Risk Link Group).In the LSA (LSA, Link State Advertisement) of Routing Protocol (GMPLS-OSPF-TE), introduce four sub-TLV (Type/LengthNalue), add in the content of link TLV and go, constitute new form.As shown in Figure 3, for node stress parameters (NSP), node temperature parameter (NTP) being expanded to the format that LSA constitutes.As shown in Figure 4, for link stress parameters (LSP), link temperature parameter (LTP) being expanded to the format that LSA constitutes.
Network element all has the initial value of performance parameter, after network configuration is accomplished, is flooded to the The whole control plane.After network element received the physical factor influence, performance parameter value changed, according to the embodiment of the invention, with triggering the new process that floods.Two wherein relevant with link sub-TLV directly upgrade corresponding to the LSA of this TE (Traffic Engineering, traffic engineering) link and flood; Two sub-TLVs relevant with node upgrade the LSA corresponding to all TE Links relevant with this node and flood.
Above-mentioned protocol extension part only is directed to topmost two kinds of performance parameters design in the present transmission plane, if also need introduce the factor of other new needs monitoring beyond temperature and the stress time, also should define corresponding protocol and expand.
Step 204: the control plane node receives the LSA that floods, and reads the performance state parameter list contrast in performance parameter information and self node, whether has got into the performance deterioration state to confirm the associated network elements that transmits the plane, if not, do not operate; If change step 205 over to.
Step 205: the control plane node is protected or Restoration Mechanism for all connections that have influence on because of the network element capabilities deterioration start, and accomplishes switching services.Similar in detailed step and the step 105, repeat no more.
In the step 203 of the foregoing description 2, after the control plane node receives the UDP message bag, directly this performance information is flooded to all control plane nodes.In the present embodiment; Owing on each control plane node, preserved the performance state parameter list, in order to reduce the number of times that floods, the control plane node that receives the UDP message bag also can extract up-to-date performance parameter information earlier from the UDP message; With the performance state parameter list contrast in the local data base; Whether the associated network elements to confirm the transmission plane has got into the performance deterioration state, if not, do not operate; If the performance information that extracts is flooded to all control plane nodes.
Because other step is identical with embodiment 2, repeats no more.
In the step of the foregoing description 3; The control plane node that receives the UDP message bag extracts up-to-date performance parameter information from the UDP message; With the performance state parameter list contrast in the local data base; After the associated network elements on affirmation transmission plane has got into the performance deterioration state, the performance information that extracts is flooded to all control plane nodes.In the present embodiment, can not take the performance information that extracts is flooded to the method for all control plane nodes, but the information broadcast that the related network element has been in the performance degradation state is to all control plane nodes.
After the control plane node receives the LSA that floods; Owing to can directly obtain the information that the related network element has been in the performance degradation state from LSA; Thereby do not need with self node in performance state parameter list contrast, whether got into the performance deterioration state to confirm the associated network elements that transmits the plane, if; Then can directly protect or Restoration Mechanism, accomplish switching services for all connections that have influence on because of the network element capabilities deterioration start.
As shown in Figure 9, the embodiment of the invention provides a kind of monitoring performance parameter device, and this device comprises:
Performance parameter information is set up module, is used for setting up and storage networking element function state parameter information;
Deterioration component information receiver module is used to obtain the performance information of network element, with said performance information and the contrast of said network element capabilities state parameter information, obtains the information of the network element that is in the performance degradation state according to results of comparison.
This device can also comprise the early warning module, is used for all are protected or recover through the said connection that is in the network element of performance degradation.
Shown in figure 10, the embodiment of the invention provides a kind of monitoring performance parameter system, and this system comprises:
The first control plane node is used to receive the performance information of network element, and said performance information is transmitted in control plane inside;
The second control plane node; The network element capabilities state parameter information contrast of the performance information that the said first control plane node that is used for receiving is transmitted and this node; Find out the network element that is in the performance degradation state, obtain the said information that is in the network element of performance degradation state.
As the preferred mode of another kind; The first control plane node in this system; Also can be used for receiving the performance information of network element,, find out the network element that is in the performance degradation state the contrast of the network element capabilities state parameter information in said performance information and this node; Obtain the said information that is in the network element of performance degradation state, and the said performance information that is in the network element of performance degradation state is transmitted in control plane inside;
The second control plane node; The performance information and the network element capabilities state parameter information in this node that also can be used for the said first control plane node that receives is transmitted contrast; Find out the network element that is in the performance degradation state, obtain the said information that is in the network element of performance degradation state.
As the third preferred mode; The first control plane node of this system; Also can be used for receiving the performance information of network element; With the contrast of the network element capabilities state parameter information in said performance information and this node, find out the network element that is in the performance degradation state, and the said information that is in the network element of performance degradation state is transmitted in control plane inside;
The second control plane node also can be used for receiving the said information that is in the network element of performance degradation state that the said first control plane node is transmitted.
Shown in figure 11, the embodiment of the invention provides a kind of control plane node, and this node comprises:
Performance parameter information is set up module, is used for setting up and storage networking element function state parameter information;
The performance information receiver module is used to receive the performance information of network element;
The deterioration element is searched module, is used for the network element capabilities state parameter information contrast with said performance information and this node, finds out the network element that is in the performance degradation state;
Deterioration component information acquisition module is used for obtaining the said information that is in the network element of performance degradation state according to the said network element that is in the performance degradation state that finds out.
This node can also comprise forwarding module, is used for said information or the performance information that is in the network element of performance degradation state transmitted in control plane inside.
Shown in figure 12, the embodiment of the invention provides a kind of Network Management Equipment, and this equipment comprises:
Performance parameter information is set up module, is used for setting up and storage networking element function state parameter information;
The performance information receiver module is used to receive the performance information of network element;
Processing module is used for said performance information and the contrast of network element capabilities state parameter information are found out the network element that is in the performance degradation state, obtains the said information that is in the network element of performance degradation state;
Forwarding module is used for the said information that is in the network element of performance degradation state is transmitted to the control plane node.
The said technical scheme of the embodiment of the invention is passed through monitor performance parameters either; Search and contrast performance parameter information; Find certain network element when control plane and be in the performance degradation state owing to external action, control plane will start the protection Restoration Mechanism, to guarantee before fault takes place; Accomplish and professional to switch or recover, to reach the initiatively purpose of fault pre-alarming.
Transmit at present in the plane because the use of WDM technology; Capacity in the simple optical fiber can reach the tens of Gigabits of per second; Under the high like this rate conditions if link failure; To have bulk information and lose, and present protection recovery technology is operated after all being based on the fault generation as soon as possible, has information dropout inevitably.Adopt the said technical scheme of the embodiment of the invention to realize fault pre-alarming, just can before fault takes place, protect recovery operation, thereby avoid losing of information.
Though the embodiment of the invention is example with the control plane, described technical scheme also can be applied in other network.
The above is merely embodiments of the invention, and is in order to restriction the present invention, not all within spirit of the present invention and principle, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (2)
1. a monitoring performance parameter method is characterized in that, said method comprising the steps of:
Transmit the plane at optical-fiber network transducer is set; Said transducer is monitored the external physical effect that whole transmission plane receives; Wherein, Said external physical effect comprises the relevant factor of effect of factor relevant with the effect of power and heat, and the said factor relevant with power comprises stress, and the said relevant factor of effect with heat comprises temperature;
When network element capabilities changed, said transducer got access to the performance information of the said network element that transmits the plane, and said performance information comprises: node stress parameters, node temperature parameter, link stress parameters and link temperature parameter;
The sensor information control unit produces the first User Data Protocol message comprised said performance information, with the said first User Data Protocol message reporting to Network Management Equipment;
Said Network Management Equipment receives the said first User Data Protocol message; Therefrom extract said performance information; Performance state parameter information contrast with said performance information and local data base preservation; Confirm to be in the network element of performance degradation state, use the second User Data Protocol message, the said information broadcast that is in the network element of performance degradation state is arrived all control plane nodes;
All control plane nodes receive the said second User Data Protocol message, extract the said information that is in the network element of performance degradation state, search the said connection that is in the network element of performance degradation state of local all processes.
2. a monitoring performance parameter method is characterized in that, said method comprising the steps of:
Transmit the plane at optical-fiber network transducer is set; Said transducer is monitored the external physical effect that whole transmission plane receives; Wherein, Said external physical effect comprises the relevant factor of effect of factor relevant with the effect of power and heat, and the said factor relevant with power comprises stress, and the said relevant factor of effect with heat comprises temperature;
When network element capabilities changed, said transducer got access to the performance information of the said network element that transmits the plane; Said performance information comprises: node stress parameters, node temperature parameter, link stress parameters and link temperature parameter;
The sensor information control unit produces the 3rd User Data Protocol message that has comprised said performance information, and said the 3rd User Data Protocol message is sent to the corresponding control plane node of said network element;
Said control plane node receives said the 3rd User Data Protocol message, therefrom extracts said performance information, starts the route topological information updating, and said performance information is flooded to all control plane nodes through LSA;
The control plane node that receives said LSA reads said performance information; Said performance information and the local performance state parameter information of preserving are contrasted; Confirm to be in the network element of performance degradation state, search the said connection that is in the network element of performance degradation state of local all processes.
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