CN101163057B - Fault notifying method and apparatus, and service receiving method and apparatus - Google Patents

Abstract

The invention discloses a fault notification method and device to improve the effectiveness of the fault notification. The method includes: when a fault occurs on the user side link for transmitting services, generating user side link fault information; through the user The network side link connected by the side link sends the failure information of the user side link; the present invention also discloses a service receiving method and device to ensure the smooth delivery of the service. The method includes: receiving the user side link failure information information; according to the received user-side link failure information, switch to a link connected to a normal user-side link at the service sending end, and receive the service.

Description

Failure notification method and device, and service receiving method and device

technical field

The present invention relates to the service transfer technology in the communication field, in particular to a fault notification method and device, and a service receiving method and device. the

Background technique

With the large-scale application of Ethernet technology in networks such as enterprise networks, metropolitan area networks, and wide area networks, the shortcomings of traditional Ethernet, such as maintainability and weak operability, have gradually become apparent. Protection has increasingly become the focus of the industry. the

Figure 1 is a schematic diagram of a scenario where a user-side device is dual-homed to access the network side. In the figure, the user-side (CE, Customer Edge) device 1 is connected to the network-side (PE, Provider Edge) device 1 and PE3 respectively through a user-side link. PE1 and PE3 are respectively connected to PE2 through the primary tunnel and the backup tunnel. The tunnel is a MAC in MAC tunnel, which is a network-side link with better security and transmission performance. the

Services are transmitted on user-side links and network-side links in the form of packets, which are called service packets. After the service message is transmitted out of the user-side link, based on the MAC in MAC technology defined by the IEEE802.1ah protocol, PE1 encapsulates the service message into the tunnel. During the encapsulation process, the service will be mapped to a corresponding I-tag value, and the service can be identified according to the I-tag value of the service. the

When the service message is transmitted on the user-side link and the network-side link, both the network-side link and the user-side link may fail. the

For the link on the network side, in Figure 1 there are active tunnels and backup tunnels. The existing technology usually detects the connectivity of the tunnel based on the 802.1ag protocol or the Y.1731 protocol. The detection method is usually: periodically sending detection messages at both ends of the tunnel to realize real-time monitoring. Message). the

When the active tunnel fails, based on the CCM failure message, PE2 can learn that the tunnel fails. However, for a user-side failure, if the user-side link CE1 to PE1 that transmits the service fails, although CE1 can learn the failure information, there is currently no way to notify PE2 of the failure of the user-side link where the service is located. , so PE2 cannot know the fault information on the user side where the service is located, which reduces the effectiveness of the fault notification. the

Figure 2 is a schematic diagram of a scenario where services between user-side devices are transmitted through the network. In the method of notifying CE2 of the failure of the user-side link, CE2 cannot know that the failure of the user-side link CE1 to PE1 occurs. the

Contents of the invention

Embodiments of the present invention provide a fault notification method and device to improve the effectiveness of fault notification. the

An embodiment of the present invention provides a fault notification method, including: generating user-side link fault information when a fault occurs on the user-side link that transmits services, and the user-side link fault information is included in the connectivity detection report. In the text CCM, the CCM includes message type identification information for judging whether it is a user-side link failure message, failure indication information for indicating whether a link fails, and a message transmitted on the user-side link where the failure occurs. The service identification information corresponding to the service; through the network side link connected to the user side link, send the user side link fault information to the service receiving end, so that the service receiving terminal is switched based on the user side link fault information , to take corresponding processing measures, and the CCM is regularly sent at a pre-configured frequency;

The CCM is the CCM of the 802.1ag protocol or the CCM of the Y.1731 protocol, wherein the message type identification information is represented by the reserved message identification code opcode, and the fault indication information is represented by the remote fault indication flag bit RDI, The service identification information is carried through the TLV field, where T is used to specify the type of the TLV field, L is used to specify the length of the read V, and V can carry information specified by the user. the

The embodiment of the present invention also provides a fault notification device, including: a fault information generating unit, configured to generate user-side link fault information when a fault occurs on the user-side link that transmits services, the fault information generating unit The generated user-side link failure information is expressed based on the form CCM of the connectivity detection message, and the CCM includes message type identification information for judging whether it is a user-side link failure message, and is used to indicate whether the link occurs. The fault indication information of the fault, and the service identification information corresponding to the service transmitted on the user side link where the fault occurs; the CCM is the CCM of the 802.1ag protocol or the CCM of the Y.1731 protocol, wherein the reserved message identification code The opcode represents the message type identification information, the fault indication information is represented by the remote fault indication flag bit RDI, and the service identification information is carried by the TLV field, wherein T is used to specify the type of the TLV field, and L is used to specify The length of V read, V can carry information specified by the user;

The fault information sending unit is used to send the user side link fault information generated by the fault information generating unit to the service receiving end through the network side link connected to the user side link, so that the service receiving and switching end is based on the user side link failure information, take corresponding processing measures, and the CCM sends it regularly at a pre-configured frequency. the

The embodiment of the present invention also provides a service receiving method and device to ensure smooth service delivery. The embodiment of the present invention also provides a service receiving method, including: the service receiving end receives user-side link failure information expressed in the form of a connectivity detection message (CCM), and the CCM includes information for judging whether it is a user-side link. The message type identification information of the fault message, the fault indication information used to indicate whether the link is faulty, and the service identification information corresponding to the service transmitted on the user side link where the fault occurs; the CCM is the CCM of the 802.1ag protocol Or the CCM of the Y.1731 protocol, wherein the message type identification information is represented by the reserved message identification code opcode, the fault indication information is represented by the remote fault indication flag bit RDI, and the service identification information is carried by the TLV field ; The service receiving end determines that the message is a user side link failure message according to the message type identification information in the received connectivity detection message, and when determining that the link fails according to the fault indication information, according to the service identification Information, switch to the link connected to the normal user-side link of the service sending end, and receive the service corresponding to the service identification information, where T is used to specify the type of the TLV field, and L is used to specify the read V The length of V can carry user-specified information. the

The embodiment of the present invention also provides a service receiving device, including:

The receiving unit is configured to receive user-side link failure information expressed in the form of a connectivity detection message CCM; the CCM includes message type identification information for judging whether it is a user-side link failure message, and is used to indicate The fault indication information of whether the link fails, and the service identification information corresponding to the service transmitted on the user side link where the fault occurs; the CCM is the CCM of the 802.1ag protocol or the CCM of the Y.1731 protocol, wherein the reserved The message identification code opcode represents the message type identification information, the fault indication information is represented by the remote fault indication flag bit RDI, and the service identification information is carried by the TLV field, wherein T is used to specify the type of the TLV field, and L It is used to specify the length of V read, and V can carry information specified by the user;

The switching unit is configured to determine that the message is a user-side link failure message according to the message type identification information in the connectivity detection message after the receiving unit receives the user-side link failure message, and according to the message When the type identification information determines that the link fails, switch to the link connected to the normal user-side link of the service sending end according to the service identification information, and receive the service corresponding to the service identification information. the

In the embodiment of the present invention, when the user-side link fails, the user-side link fault information is generated, and the user-side link fault information is sent through the network-side link connected to the user-side link, thereby realizing timely notification The purpose of the user-side link failure is to improve the effectiveness of failure notification. the

In the embodiment of the present invention, after receiving the user-side link failure information, according to the received user-side link failure information, switching to the link connected to the normal user-side link of the service sending end to receive the service, In this way, the purpose of receiving business smoothly is realized, and the smooth delivery of business is guaranteed. the

Description of drawings

Figure 1 is a schematic diagram of a scenario where a user-side device is dual-homing to access the network side;

Figure 2 is a schematic diagram of a scenario where services between user-side devices are transmitted through the network;

Fig. 3 is the flowchart of the second fault notification method proposed by the embodiment of the present invention;

Fig. 4 is the schematic diagram of the scene of the first embodiment of the present invention;

Figure 5 is a schematic diagram of the scene of the second embodiment of the present invention;

Fig. 6 is the structural representation of the failure notification device that the embodiment of the present invention proposes;

Fig. 7 is the structural representation of the fault information generation unit that the embodiment of the present invention proposes;

Figure 8 is a schematic structural diagram of a service switching device proposed in an embodiment of the present invention;

FIG. 9 is a schematic structural diagram of a switching unit proposed by an embodiment of the present invention. the

Detailed ways

In view of the problems mentioned in the background technology, the embodiment of the present invention proposes: when the user-side link fails, generate user-side link failure information indicating that the user-side link fails, and based on the network connected to the user-side link The side link sends the failure information of the user-side link, thereby achieving the purpose of timely notifying the user-side link failure and improving the effectiveness of failure notification. the

Both ends of the network-side link can be connected to one or more user-side links, wherein the user-side link connected to one end is the user-side link of the service sending end, and the user-side link connected to the other end is the user-side link of the service receiving end. user-side link. the

When the user-side link of the service sending end fails, based on the network-side link, the user-side link connected to the service sending end and the equipment connected to the network-side link will notify the user-side link of the failure to the The corresponding processing party, for example, notifies the service switching end to switch to other normal links to transmit services when the current link fails. The fault notification method proposed in the embodiment of the present invention will be described below by taking the notification of the user-side link fault to the service switching end as an example. the

The service switching end may be a device connecting the network side link and the user side link of the service receiving end, such as PE2 in FIG. 1; it may also be a service receiving end, such as CE2 in FIG. 2, through The user-side link is connected to the network-side link; or is connected to other devices on the network-side link through the user-side link of the service receiving end. the

If multiple service sending ends transmit services to the network side link through multiple user-side links, when notifying the service switching end of the user-side link failure of the service sending end, it is also necessary to notify the service switching end, Specifically which user-side link fails, so that the service switching end can take corresponding measures based on the user-side link failure notification of the service sending end;

However, if only one service sender transmits services to the network-side link through a user-side link, there are two situations:

1. The service switching end is a device that connects the network side link and the user side link of the service receiving end. At this time, it is only necessary to notify the service switching end that the user side link of the service sending end has failed, without notifying Specifically which user-side link is faulty, since only one user-side link is connected, when the service switching end learns that the user-side link is faulty, it can naturally know which user-side link is faulty, and then can Notify the fault above, and take corresponding measures. the

2. When the service switching end is based on the user-side link of the service receiving end and is connected to the network-side link (including the service receiving end), there are also two situations:

1. If multiple service receivers receive services from the network-side link through multiple user-side links, when the service switching terminal is notified of the failure of the user-side link at the service sender, it also needs to be notified Service switching end, specifically which user-side link fails;

2. If only one service receiving end receives the service transmitted by the network side link through a user side link, when notifying the service switching end of the failure of the user side link of the service sending end, it only needs to notify If the user-side link at the service sending end fails, there is no need to notify which user-side link has failed. the

Based on the above situation, the fault notification method proposed by the embodiment of the present invention can be divided into two types:

The first method: there is no need to notify the service switching end of which user-side link of the service sending end fails. It is applicable to only one service sending end passing through a user-side link to the network-side link. business, and only one service receiving end receives the business transmitted by the network side link through a user side link;

The second method: It is necessary to notify the service switching end of which user-side link of the service sending end has failed. It is applicable to multiple service sending ends or multiple service receiving Into the situation of the link on the network side. the

The following describes the second fault notification method in conjunction with the drawings in the description, that is, the method of notifying the service switching end of which user-side link of the service sending end has failed. As for the first fault notification method, it will be described in Describe the second fault notification method. the

Fig. 3 is a flow chart of the second fault notification method proposed by the embodiment of the present invention. It can be seen from the figure that based on the above design idea, the second fault notification method proposed by the embodiment of the present invention includes the following steps:

Step 1, monitor the user-side link of the service sending end to transmit the service;

The monitoring method may adopt a connectivity monitoring method, such as an 802.3ah method, or other existing monitoring methods. the

Step 2, when the user-side link fails, obtain the service identification information corresponding to the service;

The service identification information includes multiple types, such as the I-tag value corresponding to the service, and any identification information that can be used to identify the service can be used as the service identification information. the

According to different types of service identification information, there are also multiple ways to obtain the service identification. For example, for the I-tag value, because when the service message is encapsulated by the user-side link into the network-side link, the network-side equipment connected to the user-side link and the network-side link will, according to different service messages, Map and store the corresponding I-tag information, so the way to obtain the service identification information at this time is:

The network-side device connected to the user-side link and the network-side link reads the I-tag value in its own database when detecting that the user-side link fails. the

Step 3, based on the service identification information, generate user-side link failure information for indicating that the user-side link where the service is located fails;

The generated user-side link failure information may include the service identification information;

For the situation that multiple user-side links fail, based on the number of service identifiers contained in each user-side link failure information, there may be multiple ways to generate the user-side link failure information. For example, assuming that 1000 user-side links fail, two pieces of user-side link failure information can be generated, and each piece of user-side link failure information contains 500 service identification information respectively. In addition, only one user-side link failure information may be generated, and the user-side link failure information includes 1000 pieces of service identification information. the

The user-side link failure information may be in various forms, for example, in the form of a CCM message in the 802.1ag protocol or the Y.1731 protocol, or in other message forms. the

The above steps 2 and 3 are mainly for multiple service sending ends, through multiple user-side links, incoming services to the network side link, or multiple service receiving ends, through multiple user-side links, receiving The situation of the outgoing business of the network side link is proposed, although it can also be applied to only one service sending end passing a user side link, and only one service receiving end passing through the network side link. A user-side link receives services transmitted by the network-side link, but at this time, the user-side link failure information does not need to include service identification information. At this time, the user-side link failure information only It is only necessary for the service switching end to know that the user-side link fails when receiving the user-side link failure information. the

Step 4: Send the user-side link failure information to the service switching end of the service based on the network-side link. the

The network side link can be a static Mac in Mac tunnel or other types of links. the

The implementation process of the above-mentioned process is described in detail below in conjunction with specific embodiments. Preferably, the I-tag information corresponding to the business is used as the service identification information in the embodiment, and the network side link is a static Mac in Mac tunnel, and the service switching The end is PE2, and the user-side link failure information is expressed in the form of a CCM user-side link failure message. the

If the CCM message includes the following three pieces of information, the service switching end can know which service is located on the user-side link where the failure occurs:

Message type identification information, based on this information, the message type can be judged, for example, it can be judged that the message is a user-side link failure message;

Fault indication information, based on this information, it can be judged whether the link is faulty;

Fault identification information. Based on the information, it can be determined which specific service is located on the user-side link where the fault occurs. the

For the case where there is only one service sender that transmits services to the network side link through one user-side link, and only one service receiver that receives services from the network-side link through one user-side link, the The above fault identification information can be omitted. Since only one user-side link is connected, the service switching end can completely know the failure message of the user-side link according to the fault indication information and message type identification information. the

In this embodiment, the CCM message of the 802.1ag protocol or the Y.1731 protocol may adopt the following manner to include the three types of information. the

1. CCM message of 802.1ag protocol:

The CCM message of the 802.1ag protocol uses a message identification code (opcode) to identify the message type, wherein the user can select any value in the reserved opcode value (6-255) to identify the message delivered by the user type. the

Therefore, in order to transmit the user-side link failure, any value within 6-255 can be selected arbitrarily as the message type identification information of the CCM user-side link failure message. the

The CCM user side link failure message can use a remote failure indication flag (RDI, Remote Defect Indication) to indicate whether the link fails, for example, the RDI value is 0 to represent the link without failure, and the RDI value is 1 to represent the link. road failure;

The CCM message includes a TLV field, and the TLV field may carry user-specified information. The TLV field consists of three parts: T+L+V; where T is used to specify the type of the TLV field, L is used to specify the length of the read V, and V can carry user-specified information. the

Therefore, in this embodiment, the CCM user side link failure message may carry an I-tag value in its TLV field to indicate the link where the service corresponding to the I-tag value is located. the

There are many ways to carry the I-tag value in the TLV field, for example, the following ways can be used:

a. A TLV field carries multiple I-tag values at the same time, such as T+L+itag1+itag2. the

b. Multiple TLV fields respectively carry I-tag values, such as T+L+itag1 and T+L+itag2. the

2. CCM message of Y.1731 protocol:

Similar to the CCM message of the 802.1ag protocol, the CCM message of the Y.1731 protocol can use any 6-31, 64-255 reserved opcode value to identify the type of the CCM message;

The CCM failure message can also use the RDI flag to indicate whether the link fails;

The CCM failure message may also indicate the link where the service corresponding to the I-tag value is located by carrying the value of the I-tag in the TLV field;

The organization manner of the TLV field is similar to the organization manner of the TLV field of the 802.1ag protocol. the

Fig. 4 is a schematic diagram of the scene of the first embodiment of the present invention. CE1, CE2 and CE3 shown in the figure transmit service message 1, service message 2 and service packets 3 are delivered to PE1, and PE1 then encapsulates the received service packets 1 to 3 into the tunnel PE1-PE2, and passes them to the service switching end PE2 through the tunnel, and finally PE2 passes them to the subsequent service receiving end. the

According to the encapsulation process described in the background technology, when encapsulating service packets 1 to 3, PE1 maps the values of I-tag1, I-tag2, and I-tag3 according to services 1 to 3 respectively, and The values of I-tag2 and I-tag3 are stored in PE1. the

Assuming that the CE1-PE1 link fails, PE1 obtains the stored I-tag1 value, and generates a CCM fault message based on the I-tag1 value. The CCM fault message contains the RDI flag and carries the I-tag1 value. The TLV field and the opcode value identifying the packet type. the

The opcode value represents that the message is a user-side link failure message carrying I-tag information, and the value of the RDI flag bit is 1 to represent a link failure; then PE1 regularly transmits the CCM failure message at a pre-configured frequency send to PE2;

After receiving the CCM failure message, PE2 judges that the message is a user-side link failure message carrying I-tag information according to the reserved value of the opcode; further, according to the value of I-tag1 and the RDI flag The value of is 1, and it is judged that the user-side link where business 1 is located is faulty;

Similarly, assuming that at time t1+n, the CE2-PE1 link also fails, the processing process is similar to the above process, the difference is that at this time, the CCM failure message can also add an I- The value of tag2; PE2 can judge that the user-side link CE2-PE1 where service 2 is located is also faulty based on the value of I-tag2 and the RDI flag bit being 1;

Similarly, assuming that at time t1+n+m, the CE3-PE1 link also fails, the CCM failure message can carry three I-tag1, I-tag2 and I-tag3 in the TLV field Value, combined with the RDI flag bit being 1, indicates that the user-side links where services 1 to 3 are located are all faulty;

Assuming that at t1+n+m+k time, the CE2-PE1 link fault is eliminated, the TLV field of the CCM fault message carries two values of I-tag1 and I-tag3, and the combined RDI flag is 1, Indicates that the user-side link where services 1 and 3 are located is faulty;

Assuming that at time t1+n+m+k+p, the CE1-PE1 link failure is also eliminated, the TLV field of the CCM failure message carries the value of I-tag3, and the RDI flag bit is 1, indicating that the service 3 is located The user-side link of the user fails;

Assuming that at time t1+n+m+k+p+q, the CE3-PE1 link failure is also eliminated, the RDI flag in the CCM message is 0, and the TLV field may not be carried to indicate that the user side chain The road is normal. the

FIG. 5 is a schematic diagram of the scene of the second embodiment of the present invention. From this figure, it can be seen that the difference between this embodiment and the above embodiment is that the service switching end is connected to the network side link through the user side link of the service receiving end. In the illustrated scenario, the service receiving end is used as the service switching end. The figure shows two service receiving ends (also service switching ends), CE4 and CE5. After receiving the user-side link fault information sent by PE1, PE2 needs to determine whether to send the user-side link fault information to CE4 or CE5 according to the service identification information contained in the user-side link fault information. When there are multiple service switching terminals connected to the network side link, the user side link failure information needs to include service identification information, so that the user side link link can be sent to the service switching terminal corresponding to the service according to the service identification information. It can switch to the link connected to the link on the user side that sends the service to receive the service. the

Of course, as mentioned above, if the network-side link is only connected to one of the service switching terminals, when only one service sending terminal transmits services to the network-side link through a user-side link, the The user side link failure information may not include the service identifier. the

The fault notification method proposed by the embodiment of the present invention not only realizes the notification of the user-side link fault through the network side link, improves the effectiveness of the link fault notification, but also identifies the corresponding service by identifying the service based on the service identification information. The link fault information also improves the efficiency of link fault identification while improving the effectiveness of fault notification as described above. the

Based on the fault notification method proposed in the above embodiments, the embodiment of the present invention also provides a fault notification device. the

Fig. 6 is a schematic structural diagram of the fault notification device proposed by the embodiment of the present invention. It can be seen from this figure that the fault notification device 10 proposed by the embodiment of the present invention includes:

Fault information generating unit 11, used to generate user side link fault information when monitoring the user side link of the transmission service to fail;

The fault information sending unit 12 is configured to send the user-side link fault information generated by the fault information generating unit 11 through the network-side link connected to the user-side link. the

In the case that there may be multiple user-side links connected to the same network-side link, the user-side link failure information may also carry the service identification information corresponding to the service on the failed user-side link to Indicates which service is located on the user-side link where the failure occurs. the

Therefore, the embodiment of the present invention proposes a specific structure of the fault information generating unit 11 . Referring to Fig. 7, it is a schematic structural diagram of the fault information generation unit proposed by the embodiment of the present invention, as can be seen from this figure, the fault information generation unit 11 may specifically include:

The identification information acquisition subunit 13 is used to acquire the service identification information corresponding to the service transmitted on the user side link where the failure occurs;

The fault information generating subunit 14 is configured to generate user side link fault information including the service identification information obtained by the identification information obtaining subunit 13 . the

Wherein, when at least two user-side links of the service sending end are connected to the same network-side link, if there are multiple failed user-side links, based on the number of service identifiers contained in the failure information of each user-side link Differently, the fault information generating subunit 14 may generate the user-side link fault information in various manners. For example, assuming that 1000 user-side links fail, two pieces of user-side link failure information can be generated, and each piece of user-side link failure information contains 500 service identification information respectively. In addition, a piece of user-side link failure information may also be generated, including the 1000 pieces of service identification information. the

The user-side link fault information generated by the fault information generation unit 11 can be expressed based on various message forms, preferably, it can be expressed based on a CCM message. the

According to the foregoing method embodiments, the service identifiers obtained by the identifier information acquiring subunit 13 may be of various types, such as I-tag values and the like. the

The fault information sending unit 12 may, but is not limited to, send the user-side link fault information based on the non-faulty static MAC in MAC tunnel that transmits the service, and of course other types of links may also be used. the

The fault notification device proposed in the embodiment of the present invention can not only realize the notification of the user-side link fault through the network side link, improve the effectiveness of the link fault notification, but also identify the service by identifying the service based on the service identification information The fault information of the corresponding link is improved, thereby improving the efficiency of link fault identification while improving the effectiveness of fault notification. the

As mentioned in the background technology, due to the lack of a method for notifying the service switching terminal of the user-side failure, the service switching terminal cannot know the user-side link failure, so the service switching terminal cannot respond to the user-side link failure. , and take corresponding measures, such as failing to switch links, to ensure the smooth delivery of services. the

The embodiment of the present invention also proposes a service receiving method, so as to switch the link to receive the service after receiving the notification that the user side link fails, so as to ensure the smooth delivery of the service. the

When only one user-side link is connected to the network-side link, the service switching end (such as PE2 in FIG. 1 or CE2 in FIG. 2 ) learns that the user-side link is faulty after receiving the user-side link failure information. In the event of a failure in the path, it can switch to the link connected to the normal user-side link at the signal sending end, and receive the service transmitted on the user-side link, so that the service can be delivered smoothly and the success rate of service delivery can be improved. the

When there may be multiple user-side links connected to one network-side link, the user-side link failure information may need to include service identification information. At this time, the service switching end can identify the Among them, the service identification information, according to the service identification information, determines which service is located on the user-side link where the failure occurs. Take the scenario shown in Figure 2 as an example:

When the user-side link CE1-PE1 fails, CE1 switches to the user-side link CE1-PE3 to transmit services, and PE1 notifies PE2 of the failure based on the fault notification method proposed in the embodiment of the present invention, and PE2 learns that the user After the side link CE1-PE1 fails, it switches to the backup tunnel to receive the corresponding services. In this way, when the user side link CE1-PE1 fails, the smooth delivery of services on the link is guaranteed, and the efficiency of service delivery is improved. Success rate. the

In the embodiment of the present invention, after receiving the user-side link failure information, switching to the link connected to the normal user-side link of the signal sending end, and receiving the service transmitted on the user-side link, so that the service is smooth Transfer, improve the success rate of business transfer. the

Based on the service receiving method proposed by the embodiment of the present invention, the embodiment of the present invention also proposes a service receiving device to switch the link to receive the service after receiving the link failure information on the user side, so as to improve the efficiency of service delivery. Success rate. the

FIG. 8 is a schematic structural diagram of a service receiving device proposed in an embodiment of the present invention. It can be seen from this figure that the service receiving device 20 proposed in an embodiment of the present invention includes:

The receiving unit 21 is used to receive user side link failure information;

The switching unit 22 is configured to switch to the link connected to the normal user-side link of the service sending end after the receiving unit 21 receives the user-side link failure information, and receive the service. the

As mentioned above, in the case that there may be multiple user-side links connected to one network-side link, the user-side link failure information may also carry the service identifier corresponding to the service on the failed user-side link Information to indicate which user-side link where the service is located fails. the

Therefore, the embodiment of the present invention also proposes a specific structure of the switching unit 22, so as to switch links and receive corresponding services when multiple user-side links are connected to network-side links, so as to ensure smooth delivery of services. the

FIG. 9 is a schematic structural diagram of the switching unit proposed by the embodiment of the present invention. It can be seen from this figure and FIG. 8 that when the user-side link failure information received by the receiving unit 21 includes , when transmitting the service identification information corresponding to the service, the switching unit 22 specifically includes:

The service identification identification subunit 23 is used to identify the service identification information;

The switching subunit 24 is configured to switch to the link connected to the normal user-side link of the service sending end, and receive the service corresponding to the service identification information. the

The service receiving device proposed in the embodiment of the present invention receives the service transmitted on the user-side link by switching to the link connected to the normal user-side link of the signal sending end after receiving the user-side link failure information , so that the business can be delivered smoothly, and the success rate of the business delivery can be improved. the

Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these modifications and variations. the

Claims (11)

1. a failure notification method is characterized in that, comprising:

When monitoring the user side link occurs fault of transport service; Generate user side link failure information; Said user side link failure information is included among the connectivity testing message CCM, and said CCM comprises the type of message identifying information that is used to judge whether for the user side link failure message, be used to indicate the professional corresponding service identification information that transmits on failure indication information whether link break down and the user side link that breaks down;

Through the link-attached network side link of said user side; Send said user side link failure information to professional receiving terminal; Make said professional receiving terminal based on user side link failure information, take the handled measure, said CCM is with pre-configured frequency timed sending;

Said CCM is the CCM of 802.1ag agreement or the CCM of agreement Y.1731; Wherein represent said type of message identifying information through the message identification code opcode that reserves; Position RDI representes said failure indication information through the remote failure Warning Mark, carries said service identification information through the TLV field, and wherein T is used to stipulate the type of this TLV field; L is used to stipulate the length of the V that reads, and V carries user appointed information.

2. the method for claim 1 is characterized in that, said generation user side link failure information comprises:

Obtain the professional corresponding service identification information that transmits on the user side link that breaks down;

Generation comprises the user side link failure information of said service identification information.

3. method as claimed in claim 2 is characterized in that, said generation comprises the user side link failure information of said service identification information, comprising:

When at least two user side link occurs fault, generate at least two parts of user side link failure information;

Each part user side link failure information in said at least two parts of user side link failure information comprises at least one user side link that break down, the professional corresponding service identification information of transmission, and

Said at least two parts of user side link failure information, the summation of the service identification information that comprises equals on all user side links that break down the summation of the professional corresponding service identification information of transmission.

4. method as claimed in claim 2 is characterized in that, said generation comprises the user side link failure information of said service identification information, comprising:

When at least two user side link occurs fault, generate a user side link failure information;

Said user side link failure information comprises, on the user side link that each bar breaks down, and the professional corresponding service identification information of transmission.

5. like the described method of 1 to 4 each claim, it is characterized in that, also comprise:

After monitoring said user side link occurs fault, switch to and send said business on another normal user side link.

6. a malfunction informing device is characterized in that, comprising:

The fault message generation unit; Be used for when monitoring the user side link occurs fault of transport service; Generate user side link failure information; The user side link failure information that said fault message generation unit generates; Form based on connectivity testing message CCM representes, said CCM comprises the type of message identifying information that is used to judge whether for the user side link failure message, be used to indicate the professional corresponding service identification information that transmits on failure indication information whether link break down and the user side link that breaks down; Said CCM is the CCM of 802.1ag agreement or the CCM of agreement Y.1731; Wherein represent said type of message identifying information through the message identification code opcode that reserves; Position RDI representes said failure indication information through the remote failure Warning Mark, carries said service identification information through the TLV field, and wherein T is used to stipulate the type of this TLV field; L is used to stipulate the length of the V that reads, and V carries user appointed information;

Fault information generation unit; Be used for through the link-attached network side link of said user side; The user side link failure information of sending said fault message generation unit generation is to professional receiving terminal; Make said professional receiving terminal based on user side link failure information, take the handled measure, said CCM is with pre-configured frequency timed sending.

7. device as claimed in claim 6 is characterized in that, said fault message generation unit specifically comprises:

Identification information obtains subelement, is used to obtain the user side link breaking down, the professional corresponding service identification information of transmission;

Fault message generates subelement, is used to generate comprise the user side link failure information that said identification information obtains the service identification information that subelement obtains.

8. device as claimed in claim 7 is characterized in that, said fault message generates subelement when at least two user side link occurs fault, generates at least two parts of user side link failure information;

Each part user side link failure information in said at least two parts of user side link failure information comprises at least one user side link that break down, the professional corresponding service identification information of transmission, and

Said at least two parts of user side link failure information, the summation of the service identification information that comprises equals on all user side links that break down the summation of the professional corresponding service identification information of transmission.

9. device as claimed in claim 7 is characterized in that, said fault message generates subelement when at least two user side link occurs fault, generates a user side link failure information;

Said user side link failure information comprises, on the user side link that each bar breaks down, and the professional corresponding service identification information of transmission.

10. a service receiving method is characterized in that, comprising:

Professional receiving terminal receives the user side link failure information of representing based on the form of connectivity testing message CCM, and said CCM comprises the type of message identifying information that is used to judge whether for the user side link failure message, be used to indicate the professional corresponding service identification information that transmits on failure indication information whether link break down and the user side link that breaks down; Said CCM is the CCM of 802.1ag agreement or the CCM of agreement Y.1731; Wherein represent said type of message identifying information through the message identification code opcode that reserves; Position RDI representes said failure indication information through the remote failure Warning Mark, carries said service identification information through the TLV field, and wherein T is used to stipulate the type of this TLV field; L is used to stipulate the length of the V that reads, and V carries user appointed information;

It is the user side link failure message that said professional receiving terminal is judged this message according to the type of message identifying information in the connectivity testing message that receives; When confirming that according to failure indication information link breaks down; According to service identification information; Switch to and the link-attached link of the normal user side of professional transmitting terminal, receive the said business corresponding with said service identification information.

11. a service receiving device is characterized in that, comprising:

Receiving element is used to receive the user side link failure information of representing based on the form of connectivity testing message CCM; Said CCM comprises the type of message identifying information that is used to judge whether for the user side link failure message, be used to indicate the professional corresponding service identification information that transmits on failure indication information whether link break down and the user side link that breaks down; Said CCM is the CCM of 802.1ag agreement or the CCM of agreement Y.1731; Wherein represent said type of message identifying information through the message identification code opcode that reserves; Position RDI representes said failure indication information through the remote failure Warning Mark, carries said service identification information through the TLV field, and wherein T is used to stipulate the type of this TLV field; L is used to stipulate the length of the V that reads, and V carries user appointed information;

Switch unit; Be used for after said receiving element receives user side link failure information; Judging this message according to the type of message identifying information in the connectivity testing message is the user side link failure message; When confirming that according to failure indication information link breaks down, switch to and the link-attached link of the normal user side of professional transmitting terminal, receive the said business corresponding with said service identification information according to service identification information.

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