WO2012142753A1

WO2012142753A1 - Method and device for monitoring ip bearer network performance

Info

Publication number: WO2012142753A1
Application number: PCT/CN2011/073057
Authority: WO
Inventors: 盛成; 孙广煜; 李鉴; 熊焱
Original assignee: 华为技术有限公司
Priority date: 2011-04-20
Filing date: 2011-04-20
Publication date: 2012-10-26
Also published as: CN102224709A

Abstract

The present invention discloses a method and device for monitoring Internet Protocol (IP) bearer network performance, relates to the technical field of communications, and improves the accuracy for monitoring the performance and fault of the IP bearer network in use of the Multiple Protocol Label Switching (MPLS) technology. In the solutions provided by embodiments of the present invention, determined is the number of the service messages which a source Provider Edge (PE) sends to a destination PE in a predetermined period of time, wherein the service messages carry source labels uniquely identifying the source PE; and the source PE sends the destination PE an Operation, Administration and Maintenance (OAM) frame. The solutions provided by the embodiments of the present invention are adapted to monitoring the IP bearer network performance.

Description

Method and device for monitoring performance of IP bearer network

Technical field

The present invention relates to the field of communications technologies, and in particular, to a method and device for monitoring performance of an IP bearer network. Background technique

IP (Internet Protoco l) is a protocol in which networks communicate with each other and communicate with each other. The IP bearer network is composed of IP subnets interconnected by routing devices.

MPLS (Mul t iple Protoco l Label Swi tching) is a key technology of the IP bearer network. It adopts MPLS technology and is an LSP ( Label Swi) established by LDP ( Label Di s tr ibuted Protocol). In the tch Path, the labeling path, the adjacent nodes are the upstream node and the downstream node respectively, and the downstream node divides the FEC (Forwarding Equivalence Clas s, forwarding equivalence class) according to the destination address. The FEC may be divided according to any combination of a source address, a destination address, a source port, a destination port, a protocol type, a VPN, and the like. For example, in the traditional IP forwarding using the longest matching algorithm, all the documents to the same destination address are an FEC. When the downstream node allocates the same forwarding label to the upstream node for the same FEC, the service packet can quickly reach the destination PE (Provider Edge, Edge Device) according to the forwarding label. For example, on an LDP LSP, the active PE, the destination PE, and the intermediate device P1, P2, P3, and P4. When the downstream node P4 allocates the same forwarding label to the upstream nodes P1 and P2 for the same FEC, the P1 node will be locally allocated. The forwarding label is pushed into the MPLS label stack. If the forwarding label indicates that the service packet is forwarded to the P3 node, the service packet carrying the forwarding label first jumps to the next hop P2 node according to the forwarding label, and then the P2 node allocates the information locally. The forwarding label is then pushed into the MPLS label stack. The service packet carrying the forwarding label is forwarded to the next hop P3 node according to the forwarding label, that is, the forwarding operation is completed, and the service packet is received according to the forwarding label P3 node.

However, when performing performance monitoring on the IP bearer network using MPLS technology, on the LDP LSP, when the downstream node allocates the same forwarding label to the upstream node for the same FEC, the downstream node of one LDP LSP cannot be configured. According to the MPLS label, it is identified by the specific upstream node that the service text is obtained, that is, when the downstream node P3 receives the service packet according to the forwarding label, it cannot be identified. Whether the service packet is from the PI node or from the P2 node causes the performance of the IP bearer network to perform performance fault monitoring with low accuracy. Summary of the invention

The embodiments of the present invention provide a method and a device for monitoring performance of an IP bearer network, which improves the accuracy of performing performance fault monitoring on an IP bearer network adopting MPLS technology.

An embodiment of the present invention includes a method for monitoring performance of an IP bearer network, where the method includes: determining a number of service packets sent by a source carrier edge device PE to a destination PE within a predetermined time period, the service report The document carries a source label for uniquely identifying the source PE;

The source PE sends an operation, management, and maintenance 0AM frame to the destination PE, where the 0AM frame carries a source label for uniquely identifying the source PE, and the source PE sends the source PE to the destination within the predetermined time period. The number of the service packets sent by the PE and the sending time of the 0AM frame sent by the source PE.

An embodiment of the present invention includes a method for monitoring performance of an IP bearer network, the method comprising: receiving a service packet, the service packet carrying a source label for uniquely identifying a source PE; determining a destination PE at a predetermined time The number of the service packets carrying the source label received in the segment;

Receiving a 0AM frame and determining a time at which the 0AM frame is received, the 0AM frame carrying a source tag for uniquely identifying the source PE, and the source PE sending to the destination PE within the predetermined time period The number of the service packets and the sending time of the 0AM frame sent by the source PE;

And the number of the service packets sent by the source PE to the destination PE in the predetermined time period and the carried by the destination PE in a predetermined period of time according to the source PE carried in the MME. The number of the service packets of the source label is determined, and the number of packet loss of the service packet sent from the source PE to the destination PE is determined;

And determining, according to the time when the 0AM frame is received, the sending time of the 0AM frame sent by the source PE in the MME, and determining the time when the service message is sent from the source PE to the destination PE. Delay.

An embodiment of the present invention includes an apparatus for monitoring performance of an IP bearer network, where the device is The device, preferably a switch or a router, includes:

a determining unit, configured to determine a number of service packets sent by the source carrier edge device PE to the destination PE within a predetermined time period, where the service packet carries a source label for uniquely identifying the source PE; The sending, managing, and maintaining the 0AM frame to the destination PE, where the 0AM frame carries a source label for uniquely identifying the source PE, and the source PE sends the source PE to the destination PE within the predetermined time period. The number of the service packets and the sending time of the source PE to send the 0AM frame.

An embodiment of the present invention includes a device for monitoring performance of an IP bearer network, where the device is a physical device, preferably a switch or a router, and the device includes:

a receiving unit, configured to receive a service packet, where the service packet carries a source label for uniquely identifying the source PE;

a first determining unit, configured to determine, by the destination PE, the number of the service packets that carry the source label received within a predetermined time period;

a second determining unit, configured to receive an 0AM frame and determine a time when the 0AM frame is received, where the 0AM frame carries a source label for uniquely identifying the source PE, and the source PE is in the predetermined time period The number of the service packets sent by the destination PE and the sending time of the 0AM frame sent by the source PE;

a first execution unit, configured to: according to the source PE carried in the 0AM frame, the number of the service packets sent to the destination PE in the predetermined time period and the target PE at a predetermined time The number of the service packets received in the segment that carries the source label, and determines the number of packet loss of the service packet sent from the source PE to the destination PE;

a second execution unit, configured to determine, according to a time when the 0AM frame is received, a sending time of the 0AM frame sent by the source PE carried in the 0AM frame, to send the source PE to the destination PE. The delay of the service text.

The method and the device for monitoring the performance of the IP bearer network provided by the embodiment of the present invention determine the number of service packets sent by the source PE to the destination PE in a predetermined period of time, and send the 0AM frame to the destination PE. The 0AM frame carries a source label for uniquely identifying the source PE, and the source PE The number of service packets sent to the destination PE in the predetermined time period and the time at which the source PE sends the 0AM frame. The method of the present invention can enable the destination PE to receive the number of service packets carrying the source label and the 0AM frame received by the destination PE after receiving the service packet and the 0AM frame. The time determines the number of lost packets of the service packet and the delay of the service packet. In the prior art, the embodiment of the present invention can make the receiving, because the destination PE cannot determine which source PE the received service packet is sent by, and the accuracy of performing performance fault monitoring on the IP bearer network is low. The device that sends the service packet determines the specific source PE of the received service packet, thereby improving the accuracy of performing performance fault monitoring on the IP bearer network adopting the MPLS technology. DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any inventive labor.

FIG. 1 is a flowchart of a method for monitoring performance of an IP bearer network according to an embodiment of the present invention;

2 is a flow chart of another method for monitoring performance of an IP bearer network according to an embodiment of the present invention;

FIG. 3 is a block diagram of an apparatus for monitoring performance of an IP bearer network according to an embodiment of the present invention; FIG. 4 is a block diagram of another apparatus for monitoring performance of an IP bearer network according to an embodiment of the present invention;

FIG. 5 is a flowchart of a method for monitoring performance of an IP bearer network according to an embodiment of the present invention; FIG. 6 is a block diagram of an apparatus for monitoring performance of an IP bearer network according to an embodiment of the present invention; Another block diagram of an apparatus for IP bearer network performance monitoring provided by an embodiment. detailed description

The technical solution in the embodiment of the present invention will be described below with reference to the accompanying drawings in the embodiments of the present invention. It is clear that the described embodiments are only a part of the embodiments of the invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

Example 1

The embodiment provides a method for monitoring the performance of the IP bearer network. As shown in FIG. 1 , the method includes: Step 101: Determine the number of service packets sent by the source carrier edge device PE to the destination PE within a predetermined time period. The service packet carries a source label that is used to uniquely identify the source PE.

Step 102: The source PE sends an operation, management, and maintenance 0AM frame to the destination PE, where the 0AM frame carries a source label for uniquely identifying the source PE, and the source PE is in the predetermined time period. The number of the service packets sent by the destination PE and the sending time of the 0AM frame sent by the source PE.

The execution body of each of the above steps may be the source PE.

The method of the present invention can enable the destination PE to receive the number of the service packets carrying the source label and receive the 0AM after receiving the service packet and the 0AM frame. The time of the frame determines the number of lost packets of the service packet and the delay of the service packet. Therefore, in the embodiment of the present invention, the device that receives the service packet can determine the specific source PE of the received service packet, thereby improving the accuracy of performing performance fault monitoring on the IP bearer network adopting the MPLS technology.

This embodiment provides another method for monitoring performance of an IP bearer network. As shown in FIG. 2, the method includes:

Step 201: Receive a service packet, where the service packet carries a source label for uniquely identifying a source PE that sends the service >3⁄4 text;

Step 202: Determine the number of the service packets that the source PE receives in the predetermined time period and that carries the source label.

Step 203: Receive an 0AM frame and determine a time when the 0AM frame is received, where the 0AM frame carries a source label for uniquely identifying the source PE, and the source PE sends the target PE to the destination PE within the predetermined time period. The number of the service packets sent and the sending time of the 0AM frame sent by the source PE Between

Step 204: Receive, according to the source PE that is carried in the 0AM frame, the number of the service packets sent to the destination PE in the predetermined time period, and the destination PE is received in a predetermined time period. And the number of the service packets carrying the source label, determining the number of lost packets of the service packet sent from the source PE to the destination PE;

Step 205: Determine, according to the time when the 0AM frame is received, the sending time of the 0AM frame sent by the source PE in the 0AM frame, and determine the service report sent from the source PE to the destination PE. The delay of the text.

The execution subject of each of the above steps may be the destination PE.

The method for monitoring the performance of the IP bearer network is provided by the embodiment of the present invention. The destination PE receives the service text sent by the source PE, and the service carries a source label for uniquely identifying the source PE, and then determines the destination PE to receive. And the number of the service packets carrying the source label and the time of receiving the 0AM frame, and finally determining the number of lost packets and the sending station of the service text sent by the source PE to the destination PE The delay of the service message. Compared with the prior art, the accuracy of the performance monitoring of the IP bearer network is low. The solution provided by the embodiment of the present invention can identify the source PE by using the source label, and can determine the service packet received by the destination PE. The source improves the accuracy of performance fault monitoring for IP bearer networks using MPLS technology.

In order to implement the performance monitoring of the IP bearer network, the embodiment of the present invention provides a device for monitoring the performance of the IP bearer network. The device may be a source PE, and the device is a physical device, preferably a switch or a router, as shown in FIG. 3 . As shown, the device includes: a determining unit 301 and a sending unit 302.

The determining unit 301 is configured to determine the number of service packets sent by the source edge device PE to the destination PE in the predetermined time period, where the service packet carries a source label for uniquely identifying the source PE.

The sending unit 302 is configured to send, operate, and maintain an 0AM frame to the destination PE, where the 0AM frame carries a source label for uniquely identifying the source PE, and the source PE is in the predetermined time period. And the number of the service packets sent by the destination PE and the sending time of the 0AM frame sent by the source PE. The device of the present invention can enable the destination PE to receive the number of the service packets carrying the source label and receive the 0AM after receiving the service packet and the 0AM frame. The time of the frame determines the number of lost packets of the service packet and the delay of the service packet. Therefore, the device in the embodiment of the present invention may provide the device that receives the service packet with the information required to determine the source PE of the service packet, so that the device that receives the service packet can determine to send the service. The source device of the packet improves the accuracy of performance fault monitoring for the IP bearer network using MPLS technology.

The embodiment of the present invention further provides another device for monitoring the performance of the IP bearer network. The device may be a destination PE, and the device is a physical device, preferably a switch or a router. As shown in FIG. 4, the device includes: The unit 401, the first determining unit 402, the second determining unit 403, the first executing unit 404, and the second executing unit 405.

The receiving unit 401 is configured to receive a service packet, where the service packet carries a source label for uniquely identifying a source PE that sends the service text.

The first determining unit 402 is configured to determine, by the destination PE, the number of service packets carrying the source label received within a predetermined time period;

a second determining unit 403, configured to receive an 0AM frame and determine a time when the 0AM frame is received, where the 0AM frame carries a source label for uniquely identifying the source PE, and the source PE is at the predetermined time The number of the service packets sent to the destination PE in the segment and the sending time of the 0AM frame sent by the source PE;

The first execution unit 404 is configured to: according to the source PE carried in the 0AM frame, the number of the service packets sent to the destination PE in the predetermined time period and the target PE are in a predetermined The number of the service packets that are received by the source label and the number of the service packets that are sent from the source PE to the destination PE are determined.

The second executing unit 405 is configured to send, according to the time when the 0AM frame is received, the sending time of the 0AM frame sent by the source PE carried in the 0AM frame, to send to the destination PE from the source PE. The delay of the business text.

The device for monitoring the performance of the IP bearer network provided by the embodiment of the present invention passes the receiving unit at the destination PE. Receiving a service packet sent by the source PE, where the service packet carries a source label for uniquely identifying the source PE, and then the first determining unit determines, by the destination PE, the service packet that carries the source label The number of packets received by the second determining unit and the 0AM frame is determined, and the time at which the 0AM frame is received is determined by the first executing unit to determine the number of packets lost by the source PE to the destination PE. The second execution unit determines the delay in transmitting the service message. Compared with the prior art, the accuracy of the performance monitoring of the IP bearer network is low, and the device provided by the embodiment of the present invention improves the accuracy of performing performance fault monitoring on the IP bearer network adopting the MPLS technology.

Example 2

This embodiment provides a method for monitoring performance of an IP bearer network. As shown in FIG. 5, the method includes: Step 500: A source PE sends a service message to a destination PE, where the service > 3⁄4 document carries a unique identifier. a source tag of the source PE;

The source PE periodically sends the service text to the destination PE. The PE is an edge device, and serves as a starting point or an end point of the VPN service. The source PE is the starting point of the VPN service, and the destination PE is the end point of the VPN service. .

The LDP label is located in any one of the LDP labels in the multi-protocol label switching MPLS label stack of the service provider, where the source label of the source PE is uniquely identified in the service. The outermost layer of the MPLS label stack, preferably, the LDP label and the VPN label in the MPLS label stack that are used to uniquely identify the source PE of the source PE and are located in the MPLS label stack of the service >3⁄4 text Between any layer.

Step 501: The source PE determines the number of the service packets sent by the source PE to the destination PE in a predetermined time period, where the service packet carries a source label that is used to uniquely identify the source PE. ;

The predetermined time period may be a period in which the source PE sends the service text to the destination PE.

The source label is an additional layer of labels on the basis of the existing MPLS label stack. The source label corresponds to each source PE, and can uniquely identify a source PE, so that the destination PE receives the After the service message, the received source may be determined by the source label Service>3⁄4 text from which source PE.

The source label may adopt any one of the following allocation mechanisms: the source label is allocated to the source PE by the destination PE through a control protocol; or

The source label is a static preset label; or

The source tag is an existing PW (pseudowire) tag that can identify the source PE.

Specifically, the source label is allocated by the destination PE to the source PE through a control protocol, that is, the destination PE is allocated to the source PE and other PEs in the IP bearer network where the destination PE is located by using the control protocol. A label different from each other as a source label identifying the identity of the source PE. The destination PE needs to add a source label resource management module to ensure that labels assigned to other PEs in the IP bearer network are different from each other.

The source label is a static preset label, and the static preset label is a unique label in the IP bearer network where the source PE and the destination PE are manually configured. Specifically, all the PEs in the IP bearer network independently configure a unique label in an IP bearer network as a source label for identifying the source PE identity. The manual configuration can be configured on the PE using the command line and distributed by the unified network management center.

The source label is an existing PW (pseudo-line) label that can identify the source PE. Specifically, the PW label of the Layer 2 virtual private network L2VPN can be used, where the source PE and the destination PE are located in the IP bearer network. Each of the PWs of each PE is assigned one of the PW tags, and the source tag is associated with the PW tag, and the PW tag can be used as a source tag that identifies the identity of the source PE.

Step 502: The source PE sends a 0AM frame to the destination PE, where the 0AM frame carries a source label for uniquely identifying the source PE, and the source PE sends the source PE to the destination PE within the predetermined time period. The number of the service packets and the sending time of the source PE to send the 0AM frame.

The 0AM frame is configured by using the label No. 13 reserved in the MPLS label stack. Specifically, the label No. 13 is composed of a label header GAL and a >3⁄4 style G-ACH, and the 0AM frame carries The source tag for uniquely identifying the source PE is located in the body of the label of the number 13 tag.

It should be noted that the 0AM frame is a 0AM frame message, or the 0AM frame is encapsulated in an 0AM frame message sent by the source PE to the destination PE. Provided by the embodiments of the present invention The solution is described by taking the sending process of the service message in a predetermined time period as an example. Therefore, in a predetermined time period, the 0AM frame is sent after the service message is sent. The purpose of the PE.

Step 503: The destination PE receives the service packet, where the service packet carries a source label that is used to uniquely identify the source PE.

The MPLS label is located in the MPLS label stack, and the source label of the MPLS label is located in the MPLS label stack of the service packet. Outermost layer; or,

The source label of the source PE that is used to uniquely identify the source of the service packet is located at any layer between the LDP label and the VPN label in the MPLS label stack of the service packet.

Step 504: Determine, by the destination PE, the number of the service packets that carry the source label in a predetermined time period.

Step 505: The destination PE receives the 0AM frame and determines the time when the 0AM frame is received. The 0AM frame carries a source label for uniquely identifying the source PE, and the source PE is in the predetermined time period. The number of the service packets sent by the destination PE and the sending time of the 0AM frame sent by the source PE;

The 0AM frame adopts the label No. 13 reserved in the MPLS label stack. Specifically, the label No. 13 is composed of a label header GAL and a 艮艮 style G-ACH. The source label in the 0AM frame is located in the body of the label No. 13 label.

Step 506: The destination PE sends the number of the service packets sent to the destination PE to the destination PE in the predetermined time period according to the source PE carried in the 0AM frame and the target PE at a predetermined time. The number of the service packets received in the segment that carries the source label, and determines the number of packet loss of the service packet sent from the source PE to the destination PE;

When the number of lost packets of the source PE to the destination PE is 0, that is, no packet loss occurs between the source PE and the destination PE; when the obtained source is obtained When the number of packet loss of the PE to the destination PE is greater than 0, the packet is lost between the source PE and the destination PE.

Step 507: The destination PE carries the time in the 0AM frame according to the time when the 0AM frame is received. The source PE of the band sends the time of sending the OAM frame, and determines the delay of the service message sent from the source PE to the destination PE.

The determined delay of the service packet sent from the source PE to the destination PE is a direct data basis for determining whether the IP bearer network has a performance fault in different application scenarios in different application scenarios. For example, when the voice service is performed between the end users, when the delay of the service packet sent by the source PE to the destination PE is less than the threshold, the call between the terminal users is smooth, indicating that the IP bearer network does not There is a performance failure problem, the threshold is determined by the end user according to his own needs; when the delay of the service packet sent by the source PE to the destination PE is greater than the threshold, the call between the terminal users cannot be smooth. The performance of the IP bearer network is faulty.

It should be noted that an external probe technology may also be used for performing performance fault monitoring on the IP bearer network. The physical carrier of the external probe technology is a special small box device independent of the network device, and is hung in need. Both the source PE and the destination PE of the performance monitoring. The source probe is used to simulate the real service packet, and the emulation service packet is additionally configured to be sent, and the destination PE receives the emulation service packet and performs related performance data statistics. The target PE can locate the network performance fault by monitoring the receiving of the simulation message and the statistics of the related performance data. However, in the external probe technology, the cost of the external probe is relatively high, and the external probe is to simulate the real service message, and the performance of the artificial message is monitored, and the accuracy is not high. In the embodiment of the present invention, In the solution provided, the cost of the on-channel performance monitoring using the 0AM frame is low, and the real service packet is monitored, and the test result is more accurate.

The method for monitoring the performance of the IP bearer network provided by the embodiment of the present invention, the service message and the 0AM frame are sent to the destination PE in a predetermined time period, where the 0AM frame carries a source label for uniquely identifying the source PE, The number of the service packets sent by the source PE to the destination PE in the predetermined time period and the sending time of the 0AM frame sent by the source PE, when the destination PE receives the service packet After the 0AM frame is determined, the number of the service packets carrying the source label received by the destination PE and the time when the 0AM frame is received are determined to be sent from the source PE to the The number of packet loss of the service packet of the destination PE and the delay of the service packet, and the destination PE in the prior art cannot determine which source PE the received service packet is from, which results in IP bearer. The accuracy of the performance monitoring of the network is lower than that of the network. The solution provided by the embodiment of the present invention monitors the real service packet, and the monitoring cost is low, and the destination PE can determine that the received service packet is specifically from the Which source PE improves the accuracy of performance fault monitoring for the IP bearer network using MPLS technology.

Embodiment 3 An embodiment of the present invention provides a device for monitoring performance of an IP bearer network, where the device may be a source PE, and the device is a physical device, preferably a switch or a router, as shown in FIG. The device includes: a determining unit 601 and a sending unit 602.

The determining unit 601 is configured to determine the number of service packets sent by the source carrier edge device PE to the destination PE within a predetermined time period, where the service packet carries a source label for uniquely identifying the source PE.

The MPLS label is located in any layer of the LDP label in the MPLS label stack of the service profile, and the LDP label is located in the MPLS label stack. The outermost layer; or the source tag carried in the service >3, which is used to uniquely identify the source PE, is located at any layer between the LDP label and the VPN label in the MPLS label stack of the service packet. Preferably, the source tag carried in the service >3 to identify the source PE is located at any layer between the LDP label and the VPN label in the MPLS label stack of the service.

The source label is an additional layer of labels on the basis of the existing MPLS label stack. The source label corresponds to each source PE, and can uniquely identify a source PE, so that the destination PE receives the After the service packet, the source label can determine, by using the source label, which source PE the received service packet is from.

The source label may be any one of the following: the source label is allocated to the source PE by the destination PE through a control protocol; or the source label is a static preset label; or the source label It is an existing PW (pseudowire) tag that can identify the source PE.

Specifically, the source label is allocated by the destination PE to the source PE through a control protocol, that is, the destination PE is allocated to the source PE and other PEs in the IP bearer network where the destination PE is located by using the control protocol. A label different from each other as a source label identifying the identity of the source PE. The head The PE needs to add a source label resource management module to ensure that the labels assigned to other PEs in the IP bearer network are different from each other.

The source label is a static preset label, and the preset label is a unique label in the IP bearer network where the source PE and the destination PE are manually configured. Specifically, all the PEs in the IP bearer network independently configure a unique label in an IP bearer network as a source label that identifies the source PE identity. The manual configuration can be configured on the PE using the command line and distributed by the unified network management center.

The source label is an existing PW label that can identify the source PE. Specifically, the PW label of the Layer 2 virtual private network L2VPN can be used, and each of the source PE and the IP bearer network where the destination PE is located. A PW label is allocated to each PW of the PE, and the source label and the PW label are associated, and the PW label can be used as a source label for identifying the identity of the source PE.

The sending unit 602 is configured to send a 0AM frame to the destination PE, where the 0AM frame carries a source label for uniquely identifying the source PE, and the source PE sends the source PE to the destination PE within the predetermined time period. The number of the service packets and the sending time of the source PE to send the 0AM frame.

The 0AM frame uses the label No. 13 reserved in the MPLS label stack, and the source label carried in the 0AM frame for uniquely identifying the source PE is located in the packet body of the label No. 13, specifically The label No. 13 is composed of a label head GAL and a >3⁄4 style G-ACH.

The 0AM frame is a 0AM frame message, or the 0AM frame is encapsulated in an 0AM frame sent by the source PE to the destination PE. In the solution provided by the embodiment of the present invention, the 0AM frame is sent to the destination PE after the service packet is sent, in a predetermined period of time.

Embodiment 4 An embodiment of the present invention provides another device for monitoring the performance of an IP bearer network. The device may be a destination PE, and the device is a physical device, preferably a switch or a router, as shown in FIG. The device includes: a receiving unit 701, a first determining unit 702, a second determining unit 703, a first executing unit 704, and a second executing unit 705.

The receiving unit 701 is configured to receive a service packet, where the service packet carries a unique identifier source Source label of the PE.

The source label carried in the service >3⁄4 text for uniquely identifying the source PE is located in any layer of the LDP label in the MPLS label stack of the service >3⁄4; or The source tag of the identity source is located at any layer between the LDP tag and the VPN tag in the MPLS label stack of the service >3, and the LDP tag is located at the outermost layer of the MPLS label stack. Preferably, the source label for uniquely identifying the source PE carried in the service packet is located at any layer between the LDP label and the VPN label in the MPLS label stack of the service packet.

The first determining unit 702 is configured to determine, by the destination PE, the number of the service packets carrying the source label that are received within a predetermined time period.

a second determining unit 703, configured to receive an 0AM frame and determine a time when the 0 AM frame is received, where the 0AM frame carries a source label for uniquely identifying the source PE, and the source PE is at the predetermined time The number of the service packets sent to the destination PE in the segment and the sending time of the 0AM frame sent by the source PE.

The 0AM frame uses the label No. 13 reserved in the MPLS label stack, and the source label in the 0AM frame is located in the packet body of the label No. 13 label. Specifically, the label No. 13 is composed of a label header GAL and a message body G-ACH.

The first executing unit 704 is configured to: according to the source PE carried in the 0AM frame, the number of the service packets sent to the destination PE in the predetermined time period and the target PE are in a predetermined And the number of the service packets that are received by the source PE and the number of the service packets sent from the source PE to the destination PE.

The second executing unit 705 is configured to send, according to the time when the 0AM frame is received, the sending time of the 0AM frame sent by the source PE carried in the 0AM frame, to send to the destination PE from the source PE. The delay of the business text.

The obtained delay of sending the service packet from the source PE to the destination PE is in phase In the same application scenario, different end users determine whether the IP bearer network has a direct data basis for performance failure.

The device for monitoring the performance of the IP bearer network provided by the embodiment of the present invention receives the service packet sent by the source PE at the destination PE by the receiving unit, and then the first determining unit determines the received service packet carrying the source label and is configured by the first The second determining unit determines the time of the received 0AM frame, and finally determines, by the first executing unit, the number of lost packets of the service packet sent by the source PE to the destination PE, and the second executing unit acquires the service packet. The delay is used to judge the performance of the IP bearer network. The device provided by the embodiment of the present invention monitors the real service packet by using the MPLS technology, and the monitoring cost is low, and the MPLS technology is adopted, which is lower than the accuracy of the performance monitoring in the IP bearer network. The accuracy of the IP bearer network for performance fault monitoring.

The above is only the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. It should be covered by the scope of the present invention. Therefore, the scope of the invention should be determined by the scope of the claims.

Claims

Claim

A method for monitoring performance of an IP bearer network, comprising:

Determining, by the source operator edge device, the number of service packets sent by the PE to the destination PE in a predetermined period of time, where the service packet carries a source label for uniquely identifying the source PE;

The method for monitoring the performance of the IP bearer network according to claim 1, wherein the source label is allocated to the source PE by the destination PE through a control protocol; or the source label is a static preset. Label; or,

The source tag is an existing pseudowire PW tag that can identify the source PE.

The method for monitoring the performance of the IP bearer network according to claim 1, wherein the source tag carried in the service packet for uniquely identifying the source PE is located in the multi-protocol of the service packet. The service tag is used to uniquely identify that the source tag of the source PE is located at any layer between the LDP tag and the virtual private network VPN tag in the MPLS label stack of the service.

The method for monitoring the performance of the IP bearer network according to claim 1, wherein the 0AM frame uses a multi-protocol label to exchange the label No. 13 reserved in the MPLS label stack, and the label carried in the 0AM frame is used. The source tag that uniquely identifies the source PE is located in the body of the label of the No. 13 tag.

The method for monitoring the performance of the IP bearer network according to claim 1, wherein the 0AM frame is a 0AM frame message, or the 0AM frame is encapsulated in a source PE. To the destination PE (^3⁄4^frame^艮文.

A method for monitoring performance of an IP bearer network, characterized in that:

Receiving a service packet, where the service packet carries a source label for uniquely identifying the source PE; determining the number of the service packets that the destination PE receives in the predetermined time period and carrying the source label;

Receiving a 0AM frame and determining a time at which the 0AM frame is received, the 0AM frame carrying a unique Identifying a source label of the source PE, a number of the service packets sent by the source PE to the destination PE in the predetermined time period, and a sending time of sending, by the source PE, the 0AM frame;

And the number of the service packets sent by the source PE to the destination PE in the predetermined time period and the destination PE are received in a predetermined period of time according to the source PE that is carried in the 0AM frame. The number of the service packets of the source label determines the number of packet loss of the service packet sent from the source PE to the destination PE;

And determining, according to the time when the 0AM frame is received, the sending time of the 0AM frame sent by the source PE in the 0AM frame, determining the time when the service packet sent from the source PE to the destination PE is determined. Delay.

The method for monitoring the performance of the IP bearer network according to claim 6, wherein the source tag carried in the service file for uniquely identifying the source PE is located in the MPLS label stack of the service >3⁄4 text. Any layer within the LDP label; or,

The source tag carried in the service >3⁄4 text for uniquely identifying the source PE is located at any layer between the LDP label and the VPN label in the MPLS label stack of the service.

The method for monitoring the performance of the IP bearer network according to claim 6, wherein the 0AM frame adopts a label No. 13 reserved in the MPLS label stack, and the source label in the 0AM frame is located in the In the message body of the 3rd label.

A device for monitoring performance of an IP bearer network, which is characterized by comprising:

a determining unit, configured to determine a number of service packets sent by the source carrier edge device PE to the destination PE within a predetermined time period, where the service packet carries a source label for uniquely identifying the source PE; And the sending, managing, and maintaining the 0AM frame to the destination PE, where the 0AM frame carries a source label for uniquely identifying the source PE, and the source PE sends the source PE to the destination PE within the predetermined time period. The number of the service packets and the sending time of the source PE to send the 0AM frame.

a receiving unit, configured to receive a service packet, where the service packet carries a source label that is used to uniquely identify the source PE;

a first determining unit, configured to determine, by the destination PE, the number of the service packets carrying the source label received within a predetermined time period; a second determining unit, configured to receive an 0AM frame and determine a time when the 0AM frame is received, where the 0AM frame carries a source label for uniquely identifying the source PE, and the source PE is within the predetermined time period The number of the service packets sent by the destination PE and the sending time of the 0AM frame sent by the source PE;

a second executing unit, configured to send, according to the time when the 0AM frame is received, the sending time of the 0AM frame sent by the source PE carried in the 0 AM frame, to send to the destination PE from the source PE The delay of the service message.