WO2019157802A1

WO2019157802A1 - Method, device, and network system for measuring network performance

Info

Publication number: WO2019157802A1
Application number: PCT/CN2018/100620
Authority: WO
Inventors: 姚鹏; 陈志国; 叶青
Original assignee: 华为技术有限公司
Priority date: 2018-02-14
Filing date: 2018-08-15
Publication date: 2019-08-22
Also published as: CN110166311B; CN110166311A

Abstract

The present application provides a method, a network device, and a network system for measuring network performance, and a computer readable storage medium. The method comprises: a first device sending a link tracking message (LTM) to a second device, wherein the LTM comprises a first performance measurement parameter; the first device receiving a link tracking response (LTR) sent by the second device, wherein the LTR is responsive to the LTM, and the LTR comprises a second performance measurement parameter and a third performance measurement parameter; the first device acquiring a fourth performance measurement parameter, and acquiring, according to the first performance measurement parameter, the second performance measurement parameter, the third performance measurement parameter, and the fourth performance measurement parameter, a network performance parameter for between the first device and the second device. The technical solution of the present application completes collection of delay/loss performance statistics of a service path at one time in an end-to-end manner, thereby improving operational and maintenance efficiency.

Description

Method, device and network system for measuring network performance

The present application claims priority to Chinese Patent Application No. 201101152261.3, filed on February 14, 2018, the entire disclosure of which is incorporated herein by reference. In this application.

Technical field

The present application relates to the field of communications technologies, and relates to a method, device, and network system for measuring network performance.

Background technique

Multi-protocol label switching (MPLS) operations, maintenance, and maintenance (OAM) are used to detect packet loss, delay, and jitter in an MPLS network. Ethernet OAM (ETHOAM) is used to implement end-to-end packet loss, delay, and jitter detection. MPLS OAM can only detect packet loss and delay on the user network interface (UNI) in the end-to-end segment of the MPLS OAM. ETHOAM supports cross-domain end-to-end packet loss and time-out. Delay detection, but need to be deployed in stages, the deployment is cumbersome and complicated.

Summary of the invention

The present application provides a method, network device, network system, and computer readable storage medium for measuring network performance. These solutions make end-to-end network performance detection easier.

According to a first aspect of the present application, a method for measuring network performance, comprising: a first device transmitting a link tracking message LTM to a second device, the LTM including a first performance measurement parameter; the first device receiving the a link tracking response LTR sent by the second device, the LTR is responsive to the LTM, the LTR includes a second performance measurement parameter and a third performance measurement parameter; the first device acquires a fourth performance measurement parameter, according to the The first performance measurement parameter, the second performance measurement parameter, the third performance measurement parameter, and the fourth performance measurement parameter acquire network performance parameters between the first device and the second device.

According to a second aspect of the present application, a method for measuring network performance, comprising: receiving, by a second device, a link tracking message LTM sent by a first device, where the LTM includes a first performance measurement parameter; The LTM obtains a second performance measurement parameter and a third performance measurement parameter; the second device returns a link tracking response LTR to the first device, the LTR is responsive to the LTM, and the LTR includes the second a performance measurement parameter and the third performance measurement parameter; the LTR is configured to acquire a fourth performance measurement parameter when the first device receives the LTR, according to the first performance measurement parameter, the second The performance measurement parameter, the third performance measurement parameter, and the fourth performance measurement parameter acquire network performance parameters between the first device and the second device.

In a first aspect or the second aspect, the first performance measurement parameter includes a first count value when the first device sends the LTM, and the second performance measurement parameter includes the second device a second count value when the LTM is received, the third performance measurement parameter includes a third count value when the second device issues the LTR, and the fourth performance measurement parameter includes the first device received a fourth count value at the time of the LTR; the first device acquiring the first device and the first count value, the second count value, the third count value, and the fourth count value according to the first count value The number of lost packets between the second devices.

In a first aspect or the second aspect, the first performance measurement parameter includes a first timestamp that the first device sends the LTM, and the second performance measurement parameter includes that the second device receives a second timestamp of the LTM, the third performance measurement parameter includes a third timestamp when the second device sends the LTR, and the fourth performance measurement parameter includes the first device receiving a fourth timestamp when the LTR is described; the first device acquires a network delay between the first device and the second device according to the following formula: | fourth time stamp - first time stamp | - | Three time stamp - second time stamp |.

In a first aspect or the second aspect, the first performance measurement parameter includes a first count value when the first device sends the LTM and a first time stamp when the first device sends the LTM The second performance measurement parameter includes a second count value when the second device receives the LTM and a second time stamp when the second device receives the LTM, and the third performance measurement parameter And including a third count value when the second device sends the LTR and a third time stamp when the second device sends the LTR, where the fourth performance measurement parameter includes that the first device receives the a fourth count value at the time of the LTR and a fourth time stamp when the first device receives the LTR; the first device according to the first count value, the second count value, the third count And the fourth count value is used to obtain the number of lost packets between the first device and the second device; when the first device acquires the network between the first device and the second device according to the following formula Delay: | fourth time stamp - first time stamp | - | third time stamp - second time stamp |.

According to a third aspect of the present application, a second device includes a transceiver module and a processing module, wherein the transceiver module is configured to receive a link tracking message LTM sent by a first device, where the LTM includes a first performance measurement parameter. The processing module is configured to obtain, according to the LTM, a second performance measurement parameter and a third performance measurement parameter, where the transceiver module is configured to send a link tracking response corresponding to the LTM to the first device. The LTR, the LTR includes the second performance measurement parameter and the third performance measurement parameter, so that the first device acquires a fourth performance measurement parameter, according to the first performance measurement parameter, the second performance measurement parameter, The third performance measurement parameter and the fourth performance measurement parameter acquire network performance measurement parameters between the first device and the second device.

On the basis of the third aspect, the first performance measurement parameter includes a first count value when the first device sends the LTM, and the second performance measurement parameter includes when the transceiver module receives the LTM a second count value, the third performance measurement parameter includes a third count value when the transceiver module sends the LTR, and the fourth performance measurement parameter includes a first time when the first device receives the LTR Four count values.

On the basis of the third aspect, the first performance measurement parameter includes a first timestamp that the first device sends the LTM, and the second performance measurement parameter includes when the transceiver module receives the LTM a second time measurement parameter, the third performance measurement parameter includes a third timestamp when the transceiver module sends the LTR, and the fourth performance measurement parameter includes a fourth time when the first device receives the LTR Time stamp.

In a third aspect, the first performance measurement parameter includes a first count value when the first device sends the LTM and a first time stamp when the first device sends the LTM, where the first The second performance measurement parameter includes a second count value when the transceiver module receives the LTM and a second time stamp when the transceiver module receives the LTM, and the third performance measurement parameter includes the transceiver module sends out a third count value at the time of the LTR and a third time stamp when the transceiver module issues the LTR, and the fourth performance measurement parameter includes a fourth count value when the first device receives the LTR and The fourth time stamp when the first device receives the LTR.

According to a fourth aspect of the present application, a first device includes a transceiver module and a processing module, wherein the transceiver module is configured to send a link tracking message LTM to a second device, where the LTM includes a first performance measurement parameter. Receiving a link tracking response LTR sent by the second device, the LTR is responsive to the LTM, the LTR includes a second performance measurement parameter and a third performance measurement parameter, and the processing module is configured to acquire a fourth a performance measurement parameter, between the first device and the second device, according to the first performance measurement parameter, the second performance measurement parameter, the third performance measurement parameter, and the fourth performance measurement parameter Network performance parameters.

On the basis of the fourth aspect, the first performance measurement parameter includes a first count value when the transceiver module sends the LTM, and the second performance measurement parameter includes when the second device receives the LTM a second count value, the third performance measurement parameter includes a third count value when the second device sends the LTR, and the fourth performance measurement parameter includes a first time when the transceiver module receives the LTR a fourth count value; the processing module acquires the first device and the first according to the first performance measurement parameter, the second performance measurement parameter, the third performance measurement parameter, and the fourth performance measurement parameter The network performance parameter between the two devices includes: the processing module acquiring, according to the first count value, the second count value, the third count value, and the fourth count value, the first device and the first The number of lost packets between two devices.

On the basis of the fourth aspect, the first performance measurement parameter includes a first timestamp that the transceiver module sends the LTM, and the second performance measurement parameter includes when the second device receives the LTM a second time measurement parameter, the third performance measurement parameter includes a third timestamp when the second device sends the LTR, and the fourth performance measurement parameter includes a fourth time when the transceiver module receives the LTR a time stamp; the processing module acquires the first device and the second according to the first performance measurement parameter, the second performance measurement parameter, the third performance measurement parameter, and the fourth performance measurement parameter The network performance parameter between the devices: the processing module acquires a network delay between the first device and the second device according to the following formula: | fourth time stamp - first time stamp | - | third time Poke - second time stamp |

On the basis of the fourth aspect, the first performance measurement parameter includes a first count value when the transceiver module sends the LTM, and a first time stamp when the transceiver module sends the LTM, the second performance The measurement parameter includes a second count value when the second device receives the LTM and a second time stamp when the second device receives the LTM, and the third performance measurement parameter includes the second device a third count value when the LTR is issued and a third time stamp when the second device issues the LTR, where the fourth performance measurement parameter includes a fourth count value when the transceiver module receives the LTR a fourth timestamp when the transceiver module receives the LTR; the processing module according to the first performance measurement parameter, the second performance measurement parameter, the third performance measurement parameter, and the fourth The performance measurement parameter acquires network performance parameters between the first device and the second device: the processing module is configured according to the first count value, the second count value, the third count value, and fourth Counting the value to obtain the first device and the second device The number of lost packets; the processing module obtains a network delay between the first device and the second device according to the following formula: | fourth time stamp - first time stamp | - | third time stamp - Second time stamp |.

According to a fifth aspect of the present application, a network system includes a first device and a second device, the first device is the first device described in the foregoing fourth aspect, and the second device is in the foregoing third aspect The second device described.

According to a sixth aspect of the present application, a computer readable storage medium, comprising program instructions, when the program instructions are executed, performing the methods of the first aspect and the second aspect.

In the above embodiment, the first device is located in a first network, and the second device is located in a second network.

According to the method of the embodiment of the present application, the first device may serve as the source MEP of the network performance detection, the second device may serve as the network performance detection sink MEP, and the source MEP sends the LTM to the sink MEP, where the LTM includes the first a performance measurement parameter, the sink MEP receives the LTM sent by the source MEP, and sends an LTR corresponding to the LTM to the source MEP, where the LTR includes a second performance measurement parameter and a third performance measurement parameter, where the source end The MEP obtains a fourth performance measurement parameter, and obtains the source MEP and the sink MEP according to the first performance measurement parameter, the second performance measurement parameter, the third performance measurement parameter, and the fourth performance measurement parameter. Performance measurement parameters, such as delay, number of lost packets, etc. According to the embodiment of the present application, since the performance measurement parameters from the source MEP to the sink MEP are carried in the LTM and sent to the sink MEP, according to the provisions of IEEE 802.1ag and ITU-T Y.1731, the link tracking message (LTM/LTR) can traverse different networks as long as the source MEP and the sink MEP are in the same MD and have the same MD level. Therefore, in the technical solution of the embodiment of the present application, the MEP and the ETHOAM need to be configured on the first device where the source MEP is located and the second device where the sink MEP is located, without the MEP to the sink at the source end. ETHOAM is deployed in one or more networks through which the MEP is deployed, which greatly reduces configuration complexity.

DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments or the prior art description will be briefly described below.

FIG. 1 is a schematic diagram of a network system according to an embodiment of the present application;

2A-2C are schematic structural diagrams of an LTM according to an embodiment of the present application;

3A-3C are schematic structural diagrams of an LTR according to an embodiment of the present application;

4 is a schematic flowchart of a network performance measurement method according to an embodiment of the present application;

FIG. 5 is a schematic structural diagram of a first device according to an embodiment of the present disclosure;

FIG. 6 is a schematic structural diagram of a second device according to an embodiment of the present disclosure;

FIG. 7 is a schematic structural diagram of a first device according to an embodiment of the present disclosure;

FIG. 8 is a schematic structural diagram of a second device according to an embodiment of the present disclosure.

Detailed ways

Embodiments of the present invention will be described below with reference to the accompanying drawings.

The techniques described herein can be used in a variety of communication systems, such as current 2G, 3G communication systems and next generation communication systems, such as Global System for Mobile communications (GSM), Code Division Multiple Access (Code Division Multiple Access,). CDMA) system, Time Division Multiple Access (TDMA) system, Wideband Code Division Multiple Access Wireless (WCDMA), Frequency Division Multiple Addressing (FDMA) system, orthogonal frequency Orthogonal Frequency-Division Multiple Access (OFDMA) system, single carrier FDMA (SC-FDMA) system, General Packet Radio Service (GPRS) system, Long Term Evolution (LTE) system, A packet transport network (PTN) network system, a router network system, a multi-service transmission platform (MSTP) network system, and other such communication systems.

The OAM referred to herein may be a multi-protocol label switching transport profile (MPLS-TP) OAM, MPLS OAM, ETHOAM, and other such OAM.

Additionally, the terms "system" and "network" are used interchangeably herein. The term "and/or" in this context is merely an association describing the associated object, indicating that there may be three relationships, for example, A and / or B, which may indicate that A exists separately, and both A and B exist, respectively. B these three situations. In addition, the character "/" in this article generally indicates that the contextual object is an "or" relationship.

Maintenance entity (ME), ME group (MEG) maintenance end point (MEG), MEG intermediate point (MIP), link tracking message (link) Trace message (LTM), link trace reply (LTR), loss measurement message (LMM), loss measurement reply (LMR), delay measurement message (delay measurement) Message, DMM), delay measurement reply (DMR), when not specifically defined, can refer to ITU-T Y.1731 (05/2006) and IEEE 802.1ag and 802.1ah.

Terms referred to in this application:

Operations, Administration, and Maintenance (OAM): A set of network management functions that provide network fault indication, performance information and data, and diagnostics. Examples include ATM OAM [ITU-T I-610] and IEEE standard 802.3ah OAM.

Connectivity fault management (CFM): Includes the ability to detect, verify, and isolate connections in a virtual bridged LAN. These functions can be used in networks operated by multiple independent organizations, each with limited management access capabilities to each other's devices.

Domain service access point (DSAP): A member of a group of SAPs that maintain a connection to a system outside the maintenance domain. In the bridge, each DSAP is an instance of an enhanced internal sublayer service (EISS) or an internal sublayer service (ISS).

Maintenance Group Endpoint (MEP): A MEP is an active managed CFM entity associated with a particular DSAP of a service instance that can generate and receive CFM frames and track any response. It is the endpoint of a single MA and is the endpoint of an independent maintenance entity for every other MEP in the same MA.

Maintenance Group (MA): A group of MEPs that use the same Maintenance Group Identifier (MAID) and MD level configuration for each of them. A MA can be thought of as a complete mesh of maintenance entities in a set of MEPs so configured.

Maintenance Group Endpoint Identifier (MEPID): An integer that uniquely identifies a particular MEP within a given MA range.

Maintenance association identifier (MAID): An identifier of a maintenance group that is unique within the domain of a randomly concatenated service instance that the CFP will protect. The MAID has two components: the maintenance domain name and the short MA name.

Maintenance domain (MD): A network or part of a network whose connection failure will be managed. The boundaries of the maintenance domain are defined by a set of DSAPs, each of which becomes the connection point to the service instance.

Maintenance domain intermediate point (MIP): A MIP is a CFM entity that can contain one or more MIP Half Functions (MHF).

Maintenance domain name (MDN): An identifier for a particular maintenance domain that is unique within the domain of a randomly concatenated service instance that CFM will protect.

Maintenance entity (ME): A point-to-point relationship between two MEPs within a single MA.

Maintenance point (MP): A MEP or MIP.

MD level: An integer in the field in the CFM frame, which is used to identify the MA to which the CFM message belongs, together with the virtual local area network identifier (VID) in the virtual local area network (VLAN) tag, and Thereby determining the MP that is interested in the contents of the CFM frame and allowing the CFM frame to pass.

Link Tracking Message (LTM): A CFM frame initiated by a MEP and forwarded from MIP to MIP, each MIP generating an LTR until the point at which the LTM reaches its destination or can no longer be forwarded.

Link Tracking Answer (LTR): A unicast CFM frame sent by a MIP or MEP in response to receiving an LTM.

The technical solutions in the embodiments of the present invention will be clearly described below with reference to the accompanying drawings in the embodiments of the present invention.

As shown in FIG. 1 , a network system includes a metropolitan area network 1, a metropolitan area network 2, and a backbone network, and a metropolitan area network 1, a metropolitan area network 2, and a backbone network communicate through a user network interface (UNI). connection. The metropolitan area network 1 includes network devices A1 and A2, the backbone network includes network devices B1 and B2, and the metropolitan area network 2 includes network devices C1 and C2. CE1 in turn communicates with CE2 via network devices A1, A2, B1, B2, C1 and C2. Network devices A1, A2, B1, B2, C1, and C2 are used to carry and forward traffic, and network devices A1, A2, B1, B2, C1, and C2 may be packet transport network (PTN) devices. CE1 and CE2 are third-party devices. Configure LT for service connectivity, packet loss, and delay detection. Alternatively, the CE can be a router or a switch or a host.

In the network system, the network device A1 is configured with a maintenance association endpoint (MEP): MEP1, and MEP2 is configured on the network device C2. MEP1 and MEP2 are located in the same maintenance domain (MD). For packets transmitted from CE1 to CE2 via A1, A2, B1, B2, C1, and C2, MEP1 is the source MEP and MEP2 is the sink MEP. A maintenance association intermediate endpoint (MIP) can also be configured on other devices between MEP1 and MEP2. Optionally, the MEP and the MIP can be configured on the UNI port of the network device A1. For example, the MEP1 can be configured on the UNI port of the network device A1, and the MEP2 can be configured on the UNI port of the network device C2. When a link trace (LT) is initiated on the source MEP (such as the MEP1 in FIG. 1), the MEP1 sends a link trace message (LTM) to the sink MEP2, and the sink MEP2 receives the LTM to the source MEP1. Returning the link tracking response (LTR), MEP1 receives the LTR returned by MEP2 in response to the LTM, and determines that the service link connectivity of MEP1 to MEP2 is normal. If MIP is configured on other network devices (such as network devices B1 and B2 in FIG. 1) between the source MEP1 and the sink MEP2, the MIP of the LTM sent by the source MEP1 is returned to the source MEP1. In response to the LTR of the LTM, it is confirmed that the service link connectivity from MEP1 to the MIP is normal, and the downstream device of the MIP to the link from MEP1 to MEP2 continues to forward the LTM sent by MEP1 until the sink MEP2. Of course, these MIPs are in the same MD as MEP1 and MEP2 and have the same MD level.

The OAM functions specified in ITU-T Y.1731 include performance management in addition to fault management. Performance management parameters include frame loss, frame delay, and jitter. Frame loss refers to the difference between the service frame sent by the ingress device and the service frame received by the egress device. Frame delay refers to the loop delay. The loopback mode is used in the destination node and is defined as the time difference between sending a frame and receiving a loopback frame. The frame delay jitter refers to the delay variation, that is, the ring report is sent twice in a time interval, and the frame delay is calculated separately and the absolute difference of the delay of the two frames is taken.

ETHOAM includes fault management and performance management. Fault management mainly includes connectivity detection, loopback, LT, alarm indication, remote fault alarm and test functions. Performance management includes frame loss, frame delay and delay jitter. Management, ETHOAM mechanism is defined by IEEE 802.3ah, IEEE 802.1ag and ITU-T Y.1731.

Referring to FIG. 4, an embodiment of the present application provides a method for measuring network performance, which may be used to measure network performance, where network performance parameters include one or more of packet loss rate, delay, and jitter. This method can be applied to the network of FIG. The method includes:

S10. The first device sends the LTM to the second device, where the LTM includes the first performance measurement parameter.

S12. The second device receives the LTM, and returns an LTR corresponding to the LTM to the first device, where the LTR includes a second performance measurement parameter and a third performance measurement parameter.

S14. The first device receives the LTR, acquires a fourth performance measurement parameter, and obtains the first parameter according to the first performance measurement parameter, the second performance measurement parameter, the third performance measurement parameter, and the fourth measurement parameter. A performance measurement parameter between a device and the second device.

Specifically, the first device may be the network device A1 that communicates with the CE1 in the metropolitan area network 1 of FIG. 1, and the network device A1 may be the PE device in the metropolitan area network 1, and the CE1 accesses the metropolitan area network 1 through A1. The second device may be the network device C2 in the metropolitan area network 2 of FIG. 1 that communicates with the CE2. The network device C2 may be a PE device, and the CE2 accesses the metropolitan area network 2 through C2. CE1 communicates with CE2 via metropolitan area network 1 and metropolitan area network 2. The MEP is deployed on the first device and the second device, for example, the source MEP is deployed on the network device A1. The sink MEP is deployed on the network device C2. When the MEP is deployed on the first device, the MAC address of the first device may be the MAC address of the MEP deployed on the first device. When the MEP is deployed on the second device, the MAC address of the second device may be the MAC address of the MEP deployed on the second device.

The source MEP multicasts the LTM in the MD where the source MEP is located, and the MIP in the MD receives the LTM, and determines that the MIP is located on the channel from the source MEP to the sink MEP, and the MIP is sent to the source. The end MEP sends an LTR corresponding to the LTM, and the LTR sent by the MIP to the source MEP includes the MAC address of the source MEP. The MIP forwards the LTM in the direction from the source MEP to the sink MEP.

In an embodiment, the LTM may also include a media access control (MAC) address of the first device and a MAC address of the second device. The LTR may also include a MAC address of the first device and a MAC address of the second device.

In an embodiment, the first performance measurement parameter includes a time stamp TxTimeStampf when the source MEP sends the LTM (hereinafter referred to as “first time stamp”) and when the source MEP sends the LTM One or more of the source count value TxFCf (hereinafter referred to as "first count value").

In an embodiment, the first performance measurement parameter may be carried in a new type-length-value (TLV) of the LTM. When the first performance measurement parameter includes the first count value, as shown in FIG. 2A, the LTM includes a first TLV, and the first count value is carried in the first TLV. When the first performance measurement parameter includes the first timestamp, as shown in FIG. 2B, the LTM includes a second TLV, and the first timestamp is carried in the first TLV. When the first performance measurement parameter includes the first count value and the first time stamp, as shown in FIG. 2C, the LTM includes the first TLV and the second TLV, the first The count value is carried in the first TLV, and the first time stamp is carried in the second TLV.

In an embodiment, the first TLV in FIG. 2A and FIG. 2C may further include:

Reserved for RxFCf in LTR: occupies 4 bytes, indicating the value of the RxFCf of the sink counter at the time of receiving the LTM frame (hereinafter referred to as the "second count value"), and the Reserved for RxFCf in LTR is reserved for the LTR;

Reserved for TxFCb in LTR: Bytes occupying, indicating the TxFCb value of the counter of the sink MEP at the time of LTR transmission (hereinafter referred to as "third count value"), and the Reserved for TxFCb in LTR is reserved for the LTR.

In an embodiment, the second TLV in FIG. 2B and FIG. 2C may further include:

Reserved for RxTimeStampf in LTR: the time stamp of the sink MEP receiving the LTM (reserved to the LTR) (hereinafter referred to as "second time stamp");

Reserved for TxTimeStampb in LTR: The time stamp (reserved to the LTR) of the LMR sent by the sink MEP (hereinafter referred to as "third time stamp").

In an embodiment, if the first performance measurement parameter includes the first count value, the second performance measurement parameter includes a second count value, the third performance measurement parameter includes a third count value, and the fourth performance measurement The parameters include a source MEP counter value RxFCb (hereinafter referred to as a "fourth count value") when the source MEP receives the LTR. Optionally, the LTR may further include the first count value. As shown in FIG. 3A, the LTR includes a third TLV, and the second count value and the third count value may be carried in the third TLV.

If the first performance measurement parameter includes the first timestamp, the second performance measurement parameter includes the second timestamp, the third performance measurement parameter includes the third timestamp, and the fourth performance measurement parameter The time stamp RxTimeStampb (hereinafter referred to as "fourth time stamp") when the source MEP receives the LTR is included. Optionally, the LTR may further include the first time stamp. As shown in FIG. 3B, the LTR includes a fourth TLV, and the second timestamp and the third timestamp may be carried in the fourth TLV.

If the first performance measurement parameter includes the first count value and the first time stamp, the second performance measurement parameter includes the second count value and a second time stamp, and the third performance measurement parameter includes The third count value and the third time stamp. As shown in FIG. 3C, the LTR includes a third TLV and a fourth TLV, and the first count value and the first time stamp are carried in a third TLV, and the third count value and the third time stamp are carried in the third In the four TLV, the fourth performance measurement parameter includes the fourth count value and the fourth time stamp. Optionally, the LTR may further include the first count value and the first time stamp.

In an embodiment, the first device acquires the first device and the second device according to the first count value, the second count value, the third count value, and the fourth count value. The number of lost packets between.

In an embodiment, the first device acquires a network delay between the first device and the second device according to the following formula: | fourth time stamp - first time stamp | - | third time Poke - second time stamp |

The principle of packet loss statistics is as follows: whenever a valid LTM frame is received by the sink MEP on the second device or the second device, the sink MEP on the second device or the second device generates an LTR and transmits it to the first On the device or the source MEP on the first device, the LTR frame carries the following information:

· TxFCf----the value of the source counter value TxFCl at the time of LMM frame transmission (ie "first count value")

RxFCf----the value of the RxFCl of the sink counter at the time the LMM frame is received (ie, the "second count value")

· TxFCb----TxFCb value of the sink counter at the time of LMR frame transmission (ie "third count value")

After receiving the LMR frame, the Egress node calculates the packet loss value by using the following formula:

Receive the values of the TxFCf, RxFCf, and TxFCb values in the LTR and the RxFCl value of the local counter at the time of reception of this LTR frame. These values are expressed as TxFCf[tc], RxFCf[tc], TxFCb[tc], and RxFCl[ Tc], where tc is the time at which the current response frame is received.

• The values of TxFCf, RxFCf, and TxFCb in the LTR at the previous moment and the RxFCl value of the local counter at the previous LTR reception time are expressed as TxFCf[tp], RxFCf[tp], TxFCb[tp], and RxFCl [ Tp], where tp is the time of the previous response frame received.

The packet loss statistics are as follows:

Packet loss (remote) =|TxFCf[tc]-TxFCf[tp]|-|RxFCf[tc]-RxFCf[tp]|

Packet loss (local))=|TxFCb[tc]-TxFCb[tp]|-|RxFCl[tc]-RxFCl[tp]|

According to the method of the embodiment of the present application, the source MEP is configured on the first device in the first network, the source MEP is configured on the second device in the second network, and the source MEP sends the LTM to the second network device. a sinking MEP, where the LTM includes a MAC address of the source MEP, a MAC address of the sink MEP, and a first performance measurement parameter, where the sink MEP receives the LTM sent by the source MEP, and sends the LTM to the source MEP. Corresponding to the LTR of the LTM, the LTR includes a second performance measurement parameter and a third performance measurement parameter, the source MEP acquiring a fourth performance measurement parameter, according to the first performance measurement parameter, the second performance measurement parameter The third performance measurement parameter and the fourth performance measurement parameter obtain performance measurement parameters, such as delay, packet loss, and the like between the source MEP and the sink MEP. According to the embodiment of the present application, since the performance measurement parameters from the source MEP to the sink MEP are carried in the LTM and sent to the sink MEP, according to the provisions of IEEE 802.1ag and ITU-T Y.1731, the link tracking message (LTM/LTR) can traverse different networks as long as the source MEP and the sink MEP are in the same MD and have the same MD level. Therefore, in the technical solution of the embodiment of the present application, the MEP and the ETHOAM need to be configured on the first network device where the source MEP is located and the second network device where the sink MEP is located, and the MEP to the sink MEP is not required. ETHOAM is deployed in multiple networks or on multiple networks, which greatly reduces configuration complexity.

The standard LT packet can only detect the connectivity of the service. The standard LM and DM packets can only detect the packet loss and delay of the service separately. By extending the TLV in the LTM/LTR of the LT packet, the LTM/LTR packet is used. The bearer sends and receives packet information and timestamps, so that LT can perform connectivity detection of services, and can perform packet loss and delay statistics, that is, monitor various aspects of service implementation. Improve the operation and maintenance efficiency of the delay/loss performance of each segment of the service at the end of the network.

As shown in FIG. 5, a first network device 500 is configured with an active end MEP, and the first network device 500 may be the network device A1 shown in FIG. 1 or the first device in the foregoing method embodiment. The function of the first device. The first device includes: a 502 transceiver module and a processing module 504, where

The transceiver module 502 is configured to send a link tracking message LTM to the second device, where the LTM includes a first performance measurement parameter, and receive a link tracking response LTR sent by the second device, where the LTR is responsive to the LTM, the LTR includes a second performance measurement parameter and a third performance measurement parameter;

The processing module 502 is configured to obtain a fourth performance measurement parameter, and obtain the foregoing according to the first performance measurement parameter, the second performance measurement parameter, the third performance measurement parameter, and the fourth performance measurement parameter. Network performance parameters between the first device and the second device.

In an embodiment, the first performance measurement parameter includes a first count value when the transceiver module 502 sends the LTM, and the second performance measurement parameter includes when the second device receives the LTM a second count value, the third performance measurement parameter includes a third count value when the second device sends the LTR, and the fourth performance measurement parameter includes when the transceiver module 502 receives the LTR a fourth count value; the processing module 504 acquires, between the first device and the second device, according to the first count value, the second count value, the third count value, and the fourth count value The number of lost packets.

In an embodiment, the first performance measurement parameter includes a first timestamp of the transceiver module 502 sending the LTM, and the second performance measurement parameter includes when the second device receives the LTM a second time measurement parameter, the third performance measurement parameter includes a third timestamp when the second device sends the LTR, and the fourth performance measurement parameter includes a first time when the transceiver module 502 receives the LTR a fourth time stamp; the processing module 504 acquires a network delay between the first device and the second device according to the following formula: | fourth time stamp - first time stamp | - | third time stamp - Two time stamps |.

In an embodiment, the first performance measurement parameter includes a first count value when the transceiver module 502 sends the LTM, and a first time stamp when the transceiver module 502 sends the LTM, the second The performance measurement parameter includes a second count value when the second device receives the LTM and a second time stamp when the second device receives the LTM, and the third performance measurement parameter includes the second a third count value when the device issues the LTR and a third time stamp when the second device issues the LTR, and the fourth performance measurement parameter includes a fourth count when the transceiver module receives the LTR a value and a fourth timestamp when the transceiver module 502 receives the LTR; the processing module 504 is configured to: according to the first count value, the second count value, the third count value, and the fourth count value Acquiring the number of packet loss between the first device and the second device; the processing module 504 acquires a network delay between the first device and the second device according to the following formula: | fourth time Poke - first timestamp | - | third timestamp - second timestamp |.

As shown in FIG. 6, a network device 600 is configured as a second device, and is configured with a sinking MEP. The network device 600 may be the network device C2 shown in FIG. 1 or the second device in the foregoing method embodiment. The network device shown in FIG. 5 can be used together to implement the function of the second device in the above method. The network device 600 includes a transceiver module 602 and a processing module 604. The transceiver module 602 is configured to receive an LTM sent by the first network device, where the LTM includes a first performance measurement parameter. The processing module 604 is configured to obtain, according to the LTM, a second performance measurement parameter and a third performance measurement parameter, where the transceiver module 604 is configured to send, to the first device, an LTR corresponding to the LTM. The LTR includes the second performance measurement parameter and the third performance measurement parameter, so that the first device acquires a fourth performance measurement parameter, according to the first performance measurement parameter, the second performance measurement parameter, and the third performance The measurement parameter and the fourth performance measurement parameter acquire network performance measurement parameters between the first device and the network device 600.

FIG. 7 is a schematic structural diagram of a network device 700 according to an embodiment of the present application. The network device 700 may be the same device as the network device 500 of the embodiment of FIG. 5, or may be the device A1 in FIG. 1 or the first device in the foregoing method embodiment, and may implement the functions of the first device in the foregoing method. The network device 700 can perform the steps performed by the first device in the embodiment corresponding to FIG. 4. The network device 700 provided by this embodiment includes a processor 701, a memory 702, and a communication interface 703. The processor 701, the memory 702, and the communication interface 703 are connected by a communication bus 704. The memory 702 is used to store programs or instructions. The processor 701 executes the method steps performed by the first device in the embodiment corresponding to FIG. 4 according to the program or the instruction read from the memory 702.

FIG. 8 is a schematic structural diagram of a network device 800 according to an embodiment of the present application. The network device 800 may be the same device as the network device 600 of the embodiment of FIG. 5, or may be the device C2 in FIG. 1, and may implement the functions of the second device in the foregoing method. The network device 800 can perform the steps performed by the second device in the embodiment corresponding to FIG. The network device 800 provided by this embodiment includes a processor 801, a memory 802, and a communication interface 803. The processor 801, the memory 802, and the communication interface 803 are connected by a communication bus 804. The memory 802 is used to store programs or instructions. The processor 801 executes the method steps performed by the second device in the embodiment corresponding to FIG. 4 according to the program or the instruction read from the memory 802.

The embodiment of the present application provides a computer readable storage medium. The computer readable storage medium holds a computer program. When the computer program is executed by a processor or a computer, the processor or the computer can be caused to perform the method illustrated in FIG.

The embodiment of the present application further provides a network system, where the network device includes the first device and the second device, where the first device may be the network device described in the corresponding embodiment of FIG. 5 or FIG. FIG. 6 or FIG. 8 corresponds to the network device described in the embodiment. The network system may also be the network shown in FIG. 1, wherein the first device may be the network device A1 of FIG. 1, and the second device may be the network device C2 of FIG.

The terms "first" and "second" as used in the embodiments of the present application do not denote a sequence. "First" and "second" in the embodiments of the present application denote different devices and information.

Various modifications and variations of the embodiments of the present application can be made by those skilled in the art. The processor in the above embodiments may be a microprocessor or the processor may be any conventional processor. The steps of the method disclosed in the embodiment of the present invention may be directly implemented as a hardware processor, or may be performed by a combination of hardware and software modules in the processor. When implemented in software, the code implementing the above functions may be stored in a computer readable medium. Computer readable media includes computer storage media. A storage medium may be any available media that can be accessed by a computer. For example, but not limited to: the computer readable medium may be a random access memory (RAM), a read-only memory (ROM), an electrically erasable programmable read only memory (electrically erasable programmable memory) Read-only memory (EEPROM), compact disc read-only memory (CD-ROM) or other optical disc storage, disk storage media or other magnetic storage device, or capable of carrying or storing in the form of instructions or data structures Program code and any other medium that can be accessed by a computer. The computer readable medium can be a compact disc (CD), a laser disc, a compact disc, a digital video disc (DVD), a floppy disk, or a Blu-ray disc.

The above is only a 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 appended claims.

Claims

A method for measuring network performance, comprising:

The first device sends a link tracking message LTM to the second device, where the LTM includes a first performance measurement parameter;

Receiving, by the first device, a link tracking response LTR sent by the second device, where the LTR is responsive to the LTM, where the LTR includes a second performance measurement parameter and a third performance measurement parameter;

Obtaining, by the first device, a fourth performance measurement parameter, acquiring the first device according to the first performance measurement parameter, the second performance measurement parameter, the third performance measurement parameter, and the fourth performance measurement parameter Network performance parameters between the second device and the second device.
The method of claim 1, wherein the first performance measurement parameter comprises a first count value when the first device issues the LTM, and the second performance measurement parameter comprises the second device a second count value when the LTM is received, the third performance measurement parameter includes a third count value when the second device sends the LTR, and the fourth performance measurement parameter includes the first device a fourth count value when the LTR is reached;

The first device acquires the number of lost packets between the first device and the second device according to the first count value, the second count value, the third count value, and the fourth count value.
The method of claim 1, wherein the first performance measurement parameter comprises a first timestamp that the first device sends the LTM, and the second performance measurement parameter comprises the second device a second timestamp when the LTM is reached, the third performance measurement parameter includes a third timestamp when the second device sends the LTR, and the fourth performance measurement parameter includes the first device receiving a fourth timestamp when the LTR is used; the first device acquires a network delay between the first device and the second device according to the following formula:

| Fourth Time Stamp - First Time Stamp | - | Third Time Stamp - Second Time Stamp |.
The method according to claim 1, wherein said first performance measurement parameter comprises a first count value when said first device issues said LTM and a first time when said first device transmits said LTM The second performance measurement parameter includes a second count value when the second device receives the LTM and a second time stamp when the second device receives the LTM, the third performance measurement The parameter includes a third count value when the second device issues the LTR and a third time stamp when the second device issues the LTR, and the fourth performance measurement parameter includes the first device receiving a fourth count value when the LTR is described and a fourth time stamp when the first device receives the LTR;

Obtaining, by the first device, the number of lost packets between the first device and the second device according to the first count value, the second count value, the third count value, and the fourth count value;

The first device acquires a network delay between the first device and the second device according to the following formula:

| Fourth Time Stamp - First Time Stamp | - | Third Time Stamp - Second Time Stamp |.
The method of any of claims 1-4, wherein the first device is located in a first network and the second device is located in a second network.
A method for measuring network performance, comprising:

The second device receives a link tracking message LTM sent by the first device, where the LTM includes a first performance measurement parameter;

The second device obtains a second performance measurement parameter and a third performance measurement parameter according to the LTM;

Returning, by the second device, a link tracking response LTR to the first device, the LTR is responsive to the LTM, the LTR includes the second performance measurement parameter and the third performance measurement parameter; And configured to obtain a fourth performance measurement parameter when the first device receives the LTR, according to the first performance measurement parameter, the second performance measurement parameter, the third performance measurement parameter, and the The four performance measurement parameters acquire network performance parameters between the first device and the second device.
The method of claim 6, wherein the first performance measurement parameter comprises a first count value when the first device issues the LTM, and the second performance measurement parameter comprises the second device a second count value when the LTM is received, the third performance measurement parameter includes a third count value when the second device sends the LTR, and the fourth performance measurement parameter includes the first device a fourth count value when the LTR is reached;

The first device acquires the number of lost packets between the first device and the second device according to the first count value, the second count value, the third count value, and the fourth count value.
The method of claim 6, wherein the first performance measurement parameter comprises a first timestamp that the first device sends the LTM, and the second performance measurement parameter comprises the second device a second timestamp when the LTM is reached, the third performance measurement parameter includes a third timestamp when the second device sends the LTR, and the fourth performance measurement parameter includes the first device receiving a fourth timestamp when the LTR is used; the first device acquires a network delay between the first device and the second device according to the following formula:

| Fourth Time Stamp - First Time Stamp | - | Third Time Stamp - Second Time Stamp |.
The method of claim 6, wherein the first performance measurement parameter comprises a first count value when the first device issues the LTM and a first time when the first device sends the LTM The second performance measurement parameter includes a second count value when the second device receives the LTM and a second time stamp when the second device receives the LTM, the third performance measurement The parameter includes a third count value when the second device issues the LTR and a third time stamp when the second device issues the LTR, and the fourth performance measurement parameter includes the first device receiving a fourth count value when the LTR is described and a fourth time stamp when the first device receives the LTR;

Obtaining, by the first device, the number of lost packets between the first device and the second device according to the first count value, the second count value, the third count value, and the fourth count value;

The first device acquires a network delay between the first device and the second device according to the following formula:

| Fourth Time Stamp - First Time Stamp | - | Third Time Stamp - Second Time Stamp |.
The method of any of claims 6-9, wherein the first device is located in a first network and the second device is located in a second network.
A second device, comprising: a transceiver module and a processing module, wherein

The transceiver module is configured to receive a link tracking message LTM sent by the first device, where the LTM includes a first performance measurement parameter;

The processing module is configured to obtain, according to the LTM, a second performance measurement parameter and a third performance measurement parameter, where the transceiver module is configured to send, to the first device, a link tracking response LTR corresponding to the LTM. The LTR includes the second performance measurement parameter and the third performance measurement parameter, so that the first device acquires a fourth performance measurement parameter, according to the first performance measurement parameter, the second performance measurement parameter, The third performance measurement parameter and the fourth performance measurement parameter acquire network performance measurement parameters between the first device and the second device.
The second device according to claim 11, wherein the first performance measurement parameter comprises a first count value when the first device issues the LTM, and the second performance measurement parameter comprises the transceiver a second count value when the module receives the LTM, the third performance measurement parameter includes a third count value when the transceiver module sends the LTR, and the fourth performance measurement parameter includes the first device The fourth count value when the LTR is reached.
The second device according to claim 11, wherein the first performance measurement parameter comprises a first timestamp of the first device transmitting the LTM, and the second performance measurement parameter comprises the transceiver module a second timestamp when the LTM is received, the third performance measurement parameter includes a third timestamp when the transceiver module sends the LTR, and the fourth performance measurement parameter includes the first device receiving The fourth time stamp at the time of the LTR.
The second device according to claim 11, wherein said first performance measurement parameter comprises a first count value when said first device issues said LTM and said first device transmits said LTM a second time measurement, the second performance measurement parameter includes a second count value when the transceiver module receives the LTM, and a second time stamp when the transceiver module receives the LTM, the third performance measurement The parameter includes a third count value when the transceiver module issues the LTR and a third time stamp when the transceiver module issues the LTR, and the fourth performance measurement parameter includes the first device receiving the LTR And a fourth time value of the time and a fourth time stamp when the first device receives the LTR.
The second device according to any one of claims 11-14, wherein the second device is located in a first network, and the first device is located in a second network.
A first device, comprising: a transceiver module and a processing module, wherein

The transceiver module is configured to send a link tracking message LTM to the second device, where the LTM includes a first performance measurement parameter, and receive a link tracking response LTR sent by the second device, where the LTR is responsive to the LTM The LTR includes a second performance measurement parameter and a third performance measurement parameter;

The processing module is configured to acquire a fourth performance measurement parameter, and obtain the first parameter according to the first performance measurement parameter, the second performance measurement parameter, the third performance measurement parameter, and the fourth performance measurement parameter Network performance parameters between a device and the second device.
The first device according to claim 16, wherein the first performance measurement parameter comprises a first count value when the transceiver module issues the LTM, and the second performance measurement parameter comprises the second a second count value when the device receives the LTM, the third performance measurement parameter includes a third count value when the second device sends the LTR, and the fourth performance measurement parameter includes the transceiver module a fourth count value when the LTR is reached;

Obtaining, by the processing module, the first device and the second device according to the first performance measurement parameter, the second performance measurement parameter, the third performance measurement parameter, and the fourth performance measurement parameter The network performance parameter includes: the processing module acquiring, between the first device and the second device, according to the first count value, the second count value, the third count value, and the fourth count value The number of lost packets.
The first device according to claim 16, wherein the first performance measurement parameter comprises a first timestamp of the transceiver module transmitting the LTM, and the second performance measurement parameter comprises the second device a second timestamp when the LTM is received, the third performance measurement parameter includes a third timestamp when the second device sends the LTR, and the fourth performance measurement parameter includes the transceiver module receiving a fourth time stamp when the LTR is;

Obtaining, by the processing module, the first device and the second device according to the first performance measurement parameter, the second performance measurement parameter, the third performance measurement parameter, and the fourth performance measurement parameter Network performance parameters:

The processing module acquires a network delay between the first device and the second device according to the following formula:

| Fourth Time Stamp - First Time Stamp | - | Third Time Stamp - Second Time Stamp |.
The first device according to claim 16, wherein the first performance measurement parameter comprises a first count value when the transceiver module issues the LTM and a first time when the transceiver module sends the LTM The second performance measurement parameter includes a second count value when the second device receives the LTM and a second time stamp when the second device receives the LTM, the third performance measurement The parameter includes a third count value when the second device issues the LTR and a third time stamp when the second device issues the LTR, and the fourth performance measurement parameter includes the transceiver module receiving the a fourth count value at the time of the LTR and a fourth time stamp when the transceiver module receives the LTR;

Obtaining, by the processing module, the first device and the second device according to the first performance measurement parameter, the second performance measurement parameter, the third performance measurement parameter, and the fourth performance measurement parameter Network performance parameters:

The processing module acquires the number of lost packets between the first device and the second device according to the first count value, the second count value, the third count value, and the fourth count value;

The processing module acquires a network delay between the first device and the second device according to the following formula:

| Fourth Time Stamp - First Time Stamp | - | Third Time Stamp - Second Time Stamp |.
The first device according to any one of claims 16 to 19, wherein the first device is located in a first network and the second device is located in a second network.
A network system, comprising: a first device and a second device, wherein the first device is the first device according to any one of claims 16-20, and the second device is according to claim 11-15 The second device of any of the above.
A computer readable storage medium comprising program instructions that, when executed, perform the method of any of claims 1-10.