CN102271064B - Pseudo wire connectivity failure detection method, device and system - Google Patents
Pseudo wire connectivity failure detection method, device and system Download PDFInfo
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- CN102271064B CN102271064B CN201110210423.2A CN201110210423A CN102271064B CN 102271064 B CN102271064 B CN 102271064B CN 201110210423 A CN201110210423 A CN 201110210423A CN 102271064 B CN102271064 B CN 102271064B
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Abstract
The invention discloses a pseudo wire connectivity failure detection method, a pseudo wire connectivity failure detection device and a pseudo wire connectivity failure detection system. The method comprises the following steps of: when a first provider edge (PE) determines a pseudo wire between the first PE and a second PE has a data plane connectivity failure, transmitting a detection message to the second PE to indicate the second PE to return a response message from a process plane of the pseudo wire; and when the response message returned from the process plane of the pseudo wire by the second PE is received, determining that the pseudo wire from the second PE to the first PE has the data plane connectivity failure. By the method, the device and the system, the data plane connectivity failure of the pseudo wire can be further positioned accurately.
Description
Technical field
The present invention relates to the communications field, espespecially a kind of pseudo wire connectivity failure detection method, Apparatus and system.
Background technology
The end-to-end emulation of pseudo-line (Pseudo Wire Emulation Edge-to-Edge, PWE3) be one two layer service bearing technologies end to end, belong to the layer 2 virtual private network network (Layer 2 VirtualPrivate Networks, L2VPN) of point-to-point mode.At packet switching network (Packet Switched Network, PSN) two provider edge routers (Provider Edge Router, PE) in, PWE3 is with tag distribution protocol/RSVP (Label Distribution Protocol/Resource Reservation Protocol, LDP/RSVP) as signaling, by tunnels mimic customer network edge router (Customer EdgeRouter, CE) various two layer services of equipment transmit the Layer 2 data of CE end in PSN network.Wherein, tunnel may be multiprotocol label switching (Multi Protocol Label Switching, MPLS) tunnel or other.Concrete example as shown in Figure 1, between PE1 and PE2, set up a pseudo-line, through router (the Provider Router of operator, P) 1 and P2 be carried on MPLS network, (the Label Switching Router of each LSR between PE1, PE2, LSR) set up bidirectional label exchange path (Label Switched Path, LSP) as public network tunnel by LDP.Under normal circumstances, between PE1 and PE2, all can realize intercommunication at net association (Internet Protocol, IP) layer and MPLS layer.But sometime, the LDP conversation between P1 and P2, cannot carry out label forwarding between P1, P2, also just can not E-Packet, but now between PE1, PE2, remain connection at IP layer.
When the pseudo-circuit of PWE3 break down can not be correct forwarding user data message time, just need to carry out failure of connectivity detection and location to the data surface of pseudo-circuit.At present, in PWE3 working group, define pseudo-wire connectivity testing mechanism, be called virtual circuit connectivity checking (Virtual Circuit ConnectivityVerification, VCCV).VCCV is mainly used in the detection of connectivity of pseudo-line, also can be used for fault notification.VCCV is to be PW (PW has data surface and process face connectedness after setting up) setting up a control channel between entrance (Ingress) PE1 and outlet (Egress) PE2, in the time detecting pseudo-wire connectivity, in control channel, data message can not be forwarded to CE equipment, but intercepted and captured and process at PE equipment, realize pseudo-line fault detection and diagnosis end to end.Existing VCCV mechanism has defined the VCCV message of 4 kinds of patterns, simply introduces VCCV testing mechanism (VCCVPing) below as an example of MPLS Ping mode example, and now VCCV Ping message uses MPLS Echo message.
Concrete detection method is: PE1 sends MPLS Echo request message to PE2, and PE2 receives after request message, and the PW data surface that can pass through reverse VC (Virtual Circuit, virtual circuit) sends response message.If PE1 receives the response message that PE2 returns within the regular hour, represent that the pseudo-track data face between PE1 and PE2 is connective normal; Otherwise, represent the pseudo-track data face failure of connectivity between PE1 and PE2.Can find out from foregoing description, adopt the method to can not determine it is the pseudo-track data face failure of connectivity of PE1 to PE2 direction, or PE2 is to the pseudo-track data face failure of connectivity of PE1 direction, although that is to say that prior art can judge pseudo-circuit and occur data surface failure of connectivity, can not accurately locate pseudo-track data face failure of connectivity.
Summary of the invention
The embodiment of the present invention provides a kind of pseudo wire connectivity failure detection method, Apparatus and system, in order to solve the problem that can not accurately locate failure of connectivity in the time that pseudo-wire connectivity breaks down existing in prior art.
The embodiment of the present invention provides a kind of pseudo wire connectivity failure detection method, and the method comprises:
In the time that the first provider edge router PE equipment determines that pseudo-circuit between self and the 2nd PE equipment exists data surface failure of connectivity, send probe messages instruction the 2nd PE equipment to the 2nd PE equipment and return to response message from the process face of pseudo-circuit;
In the time of response message that the 2nd PE equipment that receives returns from the process face of pseudo-circuit, determine that the pseudo-circuit of the 2nd PE equipment to a PE device orientation exists data surface failure of connectivity.
Accordingly, the embodiment of the present invention also provides a kind of pseudo-wire connectivity failure detector, comprising:
Fault detection module, be used in the time that the pseudo-circuit between PE equipment and the opposite end PE equipment at self place exists data surface failure of connectivity, control sending module and return to response message to opposite end PE equipment transmission probe messages instruction opposite end PE equipment from the process face of pseudo-circuit;
Sending module, for sending probe messages to opposite end PE equipment under the control of described fault detection module;
Receiver module, receives for monitoring the response message that opposite end PE equipment returns from the process face of pseudo-circuit;
Determination module, when receive the response message that opposite end PE returns from the process face of pseudo-circuit when described receiver module, determines that opposite end PE equipment exists data surface failure of connectivity to the pseudo-circuit of the PE device orientation at self place.
Accordingly, the embodiment of the present invention also provides another pseudo-wire connectivity failure detector, comprising:
Receiver module, receives for monitoring the probe messages that opposite end provider edge router PE equipment sends, and the PE equipment at described probe messages instruction self place returns to response message from the process face of pseudo-circuit;
Feedback control module, returns to response message for the probe messages control sending module receiving according to described receiver module from the process face of pseudo-circuit;
Sending module, returns to response message for the process face from pseudo-circuit under the control of described feedback control module.
Accordingly, the embodiment of the present invention also provides a kind of provider edge router equipment, comprises above-mentioned pseudo-wire connectivity failure detector.
Accordingly, the embodiment of the present invention also provides a kind of pseudo-wire connectivity fault detection system, comprises at least two above-mentioned provider edge router equipment.
Beneficial effect of the present invention is as follows:
A kind of pseudo wire connectivity failure detection method, system that the embodiment of the present invention provides, when the method determines that when a PE equipment pseudo-circuit between self and the 2nd PE equipment exists data surface failure of connectivity, the one PE equipment sends probe messages to the 2nd PE equipment, the 2nd PE equipment of indicating returns to response message from the process face of pseudo-circuit, in the time that a PE equipment receives response message, can determine that the pseudo-circuit of the 2nd PE equipment to a PE device orientation exists data surface failure of connectivity.The method can be in the time that a PE equipment determines that pseudo-circuit between self and the 2nd PE equipment exists data surface failure of connectivity, return to response message by transmission probe messages instruction the 2nd PE from the process face of pseudo-circuit and further locate pseudo-lines fault, there is data surface failure of connectivity in the pseudo-circuit that can accurately orient the 2nd PE equipment to a PE device orientation, there is data surface failure of connectivity though can not locate the pseudo-circuit of PE equipment to the two PE device orientation, but only can failure judgement occur to locate fault phase ratio with prior art, dwindle the scope of location failure of connectivity.
Brief description of the drawings
Fig. 1 is PWE3 network failure schematic diagram in prior art;
Fig. 2 is the flow chart of pseudo wire connectivity failure detection method in the embodiment of the present invention;
Fig. 3 is the overall flow figure of pseudo wire connectivity failure detection method in the embodiment of the present invention;
Fig. 4 is the structural representation of pseudo-wire connectivity failure detector in the embodiment of the present invention;
Fig. 5 is the structural representation of another kind of pseudo-wire connectivity failure detector in the embodiment of the present invention.
Embodiment
For the problem that can not accurately locate failure of connectivity in the time that pseudo-wire connectivity breaks down existing in prior art, the embodiment of the present invention provides a kind of pseudo wire connectivity failure detection method, and the flow process of the inventive method as shown in Figure 2, performs step as follows:
Step S10: in the time that a PE equipment determines that pseudo-circuit between self and the 2nd PE equipment exists data surface failure of connectivity, send probe messages instruction the 2nd PE equipment to the 2nd PE equipment and return to response message from the process face of pseudo-circuit.
Concrete, an above-mentioned PE equipment determines that the pseudo-circuit between self and the 2nd PE equipment exists data surface failure of connectivity, comprising: a PE equipment sends probe messages instruction the 2nd PE equipment to the 2nd PE equipment and returns to response message from the data surface of pseudo-circuit.In the time not receiving the response message that the 2nd PE equipment returns from the data surface of pseudo-circuit in the time of setting, determine that the pseudo-circuit between a PE equipment and the 2nd PE equipment exists data surface failure of connectivity.Using PE1 as a PE equipment, PE2 is described as the 2nd PE equipment below.
In the situation that judging that between PE1 and PE2, pseudo-line data surface connectedness has occurred fault, PE1 can send probe messages to PE2, and the situation of the second response message then returning from the process face of pseudo-circuit according to PE2 is further located fault.
Conventionally in the time detecting the data surface failure of connectivity of pseudo-circuit, PE1 sends probe messages from the data surface of pseudo-circuit to PE2, and therefore, in the description below the application, PE1 sends probe messages to PE2 and generally refers to the data surface transmission from pseudo-circuit.
Step S20: in the time of response message that the 2nd PE equipment that receives returns from the process face of pseudo-circuit, determine that the pseudo-circuit of the 2nd PE equipment to a PE device orientation exists data surface failure of connectivity.
After PE1 has sent probe messages, will receive the response message that PE2 sends, at this moment just there will be two kinds of different situations:
The first, PE1 receives response message.This just proves that PE1 is connective normal to the pseudo-line data surface between PE2, there is fault at PE2 to the pseudo-track data face connectedness between PE1, because if there is fault to the pseudo-track data face connectedness between PE2 in PE1, PE2 does not receive the probe messages that PE1 sends at all, just can not return to response message yet.
The second, PE1 does not receive response message.Now, the reason of fault may have multiple, for example: PE1 has occurred that to the pseudo-line data surface connectedness between PE2 fault, PE2 have occurred that to the pseudo-line process face connectedness between PE1 fault etc. all may cause PE1 cannot receive response message.
So far just completed the further location for pseudo-track data face failure of connectivity between PE1 and PE2.
Concrete, in said method, send probe messages instruction the 2nd PE equipment to the 2nd PE equipment and return to response message from process face or the data surface of pseudo-circuit, specifically comprise: configuration message is replied indication information, wherein, to reply indication information be instruction the 2nd PE equipment to message returns to the process face answer-mode mark of response message or instruction the 2nd PE equipment and return from the data surface of pseudo-circuit the data surface answer-mode mark of response message from the process face of pseudo-circuit; Message is replied to indication information to be encapsulated in and in probe messages, to send to the 2nd PE equipment.
Preferably, above-mentionedly message is replied to indication information be encapsulated in and in probe messages, send to the 2nd PE equipment, specifically comprise: a PE equipment is replied indication information by message and is written in answer-mode (Reply Mode) field of VCCV packet message, send to the 2nd PE equipment using writing the VCCV packet message that message replys after indication information as probe messages.
In said method, the 2nd PE equipment can return to response message from the data surface of pseudo-circuit or process face, specifically comprises: the probe messages that the 2nd PE equipment interconnection is received is resolved, and parses the message wherein carrying and replys indication information; If it is data surface answer-mode when mark that the message parsing is replied indication information, return to response message from the data surface of pseudo-circuit to a PE equipment; If it is process face answer-mode when mark that the message parsing is replied indication information, return to response message from the process of pseudo-circuit towards a PE equipment.
Because specifically can carrying message in VCCV packet message, a PE equipment replys indication information, accordingly, the probe messages of receiving for above-mentioned the 2nd PE equipment interconnection is resolved, specifically comprise: the VCCV packet message receiving is resolved, and the message obtaining in Reply Mode field is replied indication information.
Preferably, when the 2nd PE equipment returns to response message from the process of pseudo-circuit towards a PE equipment, in response message, add alarm label A lert Label; Other operator's router devices that Alert Label is used to indicate on the pseudo-circuit between the first PE equipment and the 2nd PE equipment forward response message from the process face of pseudo-circuit.
Describe the specific implementation flow process of pseudo wire connectivity failure detection method below in detail with a specific embodiment.The method flow process as shown in Figure 3, specifically comprises the steps:
Step S31:PE1 sends to PE2 the VCCV packet message that Reply mode is 4, and instruction PE2 returns to response message from the data surface of pseudo-circuit.
Between a PE equipment PE1 and the 2nd PE equipment PE2, set up after one bar of pseudo-line, under normal circumstances, between PE1 and PE2, all can realize intercommunication at IP layer and MPLS layer.Sometime, having there is failure of connectivity in the pseudo-line between PE1 and PE2, in still existing, can not E-Packeting, just need to detect pseudo-wire connectivity fault, and fault is positioned at IP connectivity.
While detecting pseudo-lines fault by VCCV Ping in the prior art, it is 4 that PE1 specifies Reply mode, implication is to reply (Reply via application level controlchannel) by the data surface of control channel, and send VCCV packet message that Reply mode is 4 as probe messages to PE2, wherein VCCV packet message can adopt MPLS Echo message format.
In the present invention, also can be using 4 (can certainly be other numeral or the mark such as alphabetical) be written in Reply mode field as data surface answer-mode mark, then be encapsulated in VCCV packet message as sending to PE2 in probe messages, wherein VCCV packet message can be MPLS Echo Request message.In the time that PE receives VCCV packet message, parsing Reply mode is 4 o'clock, just returns to response message from the data surface of pseudo-circuit, and response message can be MPLS Echo Reply message.
Step S32:PE2 receives after the VCCV message that PE1 sends, and after parsing Reply mode and being 4, returns to response message from the data surface of pseudo-circuit.
In the time that PE2 receives the VCCV packet message of PE1 transmission, PE2 returns to response message from the data surface of pseudo-circuit, and now, this step exists; And in the time that PE2 does not receive the VCCV packet message of PE1 transmission, PE2 just can not return to response message from the data surface of pseudo-circuit, now, this step has not just existed.
Step S33:PE1 monitoring receives the response message that PE2 returns from the data surface of pseudo-circuit.
Step S34:PE1 judges whether to receive the response message that PE2 returns from the data surface of pseudo-circuit, if so, performs step S35; If not, execution step S36.
The probe messages that PE1 sends to PE2 is to send at the data surface of pseudo-circuit, when PE2 receives after the probe messages of PE1 transmission, can return to response message from the data surface of pseudo-circuit, PE1 can monitor reception PE2 and whether return to response message, in the time that PE1 receives the response message that PE2 returns from the data surface of pseudo-circuit, the data surface connectedness that pseudo-line between PE1 and PE2 is described is normal, does not have fault.In the time that PE1 can not receive the response message that PE2 returns from the data surface of pseudo-circuit, just have two kinds may: the first, there is failure of connectivity to PE2 direction in PE1, at this moment PE2 does not receive the probe messages of PE1 transmission, so can not return to response message; The second, there is failure of connectivity to PE1 direction in PE2, at this moment PE2 can receive the probe messages that PE1 sends, and sends response message according to the instruction of probe messages, but because PE2 exists failure of connectivity to PE1 direction, PE1 can not receive response message.That is to say, whether the data surface connectedness that this step only can be judged pseudo-line between PE1 and PE2 breaks down, and but can not further locate fault, therefore needs the step of carrying out below further to locate fault.
In normal situation, PE1 can receive the response message that PE2 sends, in the time of pseudo-line generation failure of connectivity, PE1 can not receive response message, can judge that the condition of pseudo-line generation failure of connectivity judges whether PE1 has received the response message that PE2 sends by setting.
For example,, if when PE1 (in concrete pseudo-circuit is different, set of time just different) within the regular hour does not receive the response message that PE2 returns from the data surface of pseudo-circuit, assert that failure of connectivity has appearred in pseudo-line.Can certainly adopt other decision conditions of the prior art, here repeat no more.
Only enumerate an example here and illustrated whether the pseudo-circuit how judging between PE1 and PE2 exists data surface failure of connectivity, be not limited only to judge with the example of enumerating, the method that has in the prior art a lot of judgements, here repeats no more.
Step S35: pseudo-track data face is connective good, and flow process finishes.
Step S36:PE1 sends to PE2 the VCCV packet message that Reply mode is 5, and instruction PE2 returns to response message from the process face of pseudo-circuit.
Description in step S31 can know, the mode that is 4 by Reply mode can detect pseudo-line data surface failure of connectivity has occurred, but can not locate fault.In the present invention, adopt the process face answer-mode that Replymode is 5 to identify locator data face failure of connectivity.Specifically: revise the MPLS Echo message format that VCCV packet message of the prior art adopts, Reply mode is made as to 5 (can certainly be defined as other numeral or the mark such as alphabetical), and interpolation " router alarm (withRouter Alert) " field, be defined as Reply mode 5, implication is to carry Router Alert to reply (Reply via application level control channel with RouterAlert) by the process face of control channel.When PE1 is in the time that VCCV ping specifies Reply mode to be 5, the Reply mode field in the MPLS EchoRequest message of transmission is set to 5, and the MPLS Echo Request message that is then 5 to PE2 transmission Reply mode is as probe messages.When PE2 receives after MPLS Echo Request message, the Reply mode parsing in MPLS Echo Request message is 5 o'clock, in response message, add alarm label A lert Label, other operator's router devices that wherein Alert Label is used to indicate on the pseudo-circuit between PE1 and PE2 forward response message from the process face of pseudo-circuit, and wherein response message can be MPLS Echo Reply message.
Step S37:PE2 receives after the VCCV packet message that PE1 sends, and after parsing Reply mode and being 5, returns to response message from the process face of pseudo-circuit.
In the time that PE2 receives the VCCV packet message of PE1 transmission, PE2 returns to response message from the process face of pseudo-circuit, and now, this step exists; And in the time that PE2 does not receive the VCCV packet message of PE1 transmission, PE2 just can not return to response message from the process face of pseudo-circuit, now, this step has not just existed.
Step S38:PE1 monitoring receives the response message that PE2 returns from the process face of pseudo-circuit.
Step S39:PE1 judges whether to receive the response message that PE2 returns from the process face of pseudo-circuit, if so, performs step S40, if not, and execution step S41.
Step S40:PE1 judges that PE2 exists data surface failure of connectivity to the pseudo-circuit of PE1 direction.
Step S41:PE1 need to further judge in conjunction with other conditions the data surface failure of connectivity of pseudo-circuit.
The above-mentioned pseudo wire connectivity failure detection method providing based on embodiment, the embodiment of the present invention provides a kind of pseudo-wire connectivity failure detector, can be arranged in the Provider Edge routing device for detection of pseudo-wire connectivity fault, its structure as shown in Figure 4, comprising:
Fault detection module 11, be used in the time that the pseudo-circuit between PE equipment and the opposite end PE equipment at self place exists data surface failure of connectivity, control sending module and return to response message to opposite end PE equipment transmission probe messages instruction opposite end PE equipment from the process face of pseudo-circuit.
Sending module 12, for sending probe messages to opposite end PE equipment under the control of fault detection module.
Receiver module 13, receives for monitoring the response message that opposite end PE equipment returns from the process face of pseudo-circuit.
Determination module 14, when receive the response message that opposite end PE returns from the process face of pseudo-circuit when receiver module, determines that opposite end PE equipment exists data surface failure of connectivity to the pseudo-circuit of the PE device orientation at self place.
Concrete, above-mentioned fault detection module 11, specifically for: control sending module and send probe messages to opposite end PE equipment, instruction opposite end PE equipment returns to response message from the data surface of pseudo-circuit; If when receiver module does not receive the response message that opposite end PE equipment returns from the data surface of pseudo-circuit within the time of setting, determine that the pseudo-circuit between PE equipment and the opposite end PE equipment at self place exists data surface failure of connectivity.
Concrete, above-mentioned receiver module 13, also receives for monitoring the response message that opposite end PE equipment returns from the data surface of pseudo-circuit.
Concrete, above-mentioned fault detection module 11, be used for: configuration message is replied indication information, wherein, to reply indication information be instruction opposite end PE equipment to message returns to the process face answer-mode mark of response message or instruction opposite end PE equipment and return from the data surface of pseudo-circuit the data surface answer-mode mark of response message from the process face of pseudo-circuit; Message is replied to indication information and be encapsulated in probe messages and offer sending module, so that probe messages is sent to opposite end PE equipment by sending module.
Preferably, above-mentioned fault detection module 11, specifically for: message is replied to indication information and be written in the answer-mode Reply Mode field of virtual circuit connectivity checking VCCV packet message, offer sending module using writing the VCCV packet message that message replys after indication information as probe messages, so that probe messages is sent to opposite end PE equipment by sending module.
The above-mentioned pseudo wire connectivity failure detection method providing based on embodiment, the embodiment of the present invention also provides a kind of pseudo-wire connectivity failure detector, can be arranged in the Provider Edge routing device for detection of pseudo-wire connectivity fault, its structure as shown in Figure 5, comprising:
Receiver module 21, receives for monitoring the probe messages that opposite end provider edge router PE equipment sends, and the PE equipment at probe messages instruction self place returns to response message from the process face of pseudo-circuit.
Feedback control module 22, returns to response message for the probe messages control sending module receiving according to receiver module from the process face of pseudo-circuit.
Sending module 23, returns to response message for the process face from pseudo-circuit under the control of feedback control module.
Concrete, above-mentioned receiver module 21, also receives for monitoring the probe messages that opposite end PE equipment sends, and the PE equipment at probe messages instruction self place returns to response message from the data surface of pseudo-circuit.
Feedback control module 22, also returns to response message for the probe messages control sending module receiving according to receiver module from the data surface of pseudo-circuit.
Sending module 23, also returns to response message for the data surface from pseudo-circuit under the control of feedback control module.
Concrete, above-mentioned feedback control module 22, specifically for: the probe messages receiving is resolved, parse the message wherein carrying and reply indication information; If it is data surface answer-mode when mark that the message parsing is replied indication information, controls sending module and return to response message from data surface to opposite end PE equipment; If it is process face answer-mode when mark that the message parsing is replied indication information, controls sending module and return to response message from the process of pseudo-circuit towards opposite end PE equipment.
Concrete, above-mentioned feedback control module 22, for: while response message being returned to from the process of pseudo-circuit towards opposite end PE equipment, in response message, add alarm label A lert Label; Other operator's router devices that Alert Label is used to indicate on the pseudo-circuit between PE equipment and the opposite end PE equipment at self place forward response message from the process face of pseudo-circuit.
In the time that the pseudo-wire connectivity failure detector in PE equipment comprises each functional module as shown in Figure 4, can serve as a PE equipment uses, in the time that the pseudo-wire connectivity failure detector in PE equipment comprises each functional module as shown in Figure 5, can serve as the 2nd PE equipment and use.In the time that the pseudo-wire connectivity failure detector in PE equipment comprises each functional module as shown in Figure 4 and Figure 5, can either serve as a PE equipment use and also can serve as the 2nd PE equipment use.In other words, in PE equipment, can only comprise that device is as shown in Figure 4 as a PE equipment, can only comprise device the 2nd PE equipment as shown in Figure 5, also can comprise that device as shown in Figure 4 and device are as shown in Figure 5 as a PE equipment and/or the 2nd PE equipment simultaneously.
The above-mentioned pseudo wire connectivity failure detection method providing based on embodiment, the embodiment of the present invention also provides a kind of pseudo-wire connectivity fault detection system, comprising:
At least one comprises that the provider edge router equipment of pseudo-wire connectivity failure detector as shown in Figure 4 and at least one comprise the provider edge router equipment of pseudo-wire connectivity failure detector as shown in Figure 5; Or
At least two comprise the provider edge router equipment of pseudo-wire connectivity failure detector as shown in Figure 4 and pseudo-wire connectivity failure detector as shown in Figure 5; Or
At least one comprises that the provider edge router equipment of pseudo-wire connectivity failure detector as shown in Figure 5 and at least one comprise the provider edge router equipment of pseudo-wire connectivity failure detector as shown in Figure 4 and pseudo-wire connectivity failure detector as shown in Figure 5; Or
At least one comprises that the provider edge router equipment of pseudo-wire connectivity failure detector as shown in Figure 5 and at least one comprise the provider edge router equipment of pseudo-wire connectivity failure detector as shown in Figure 4 and pseudo-wire connectivity failure detector as shown in Figure 5.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if these amendments of the present invention and within modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (16)
1. a pseudo wire connectivity failure detection method, is characterized in that, comprising:
In the time that the first provider edge router PE equipment determines that pseudo-circuit between self and the 2nd PE equipment exists data surface failure of connectivity, send probe messages instruction the 2nd PE equipment by the data surface of pseudo-circuit to the 2nd PE equipment and return to response message from the process face of pseudo-circuit;
In the time of response message that the 2nd PE equipment that receives returns from the process face of pseudo-circuit, determine that the pseudo-circuit of the 2nd PE equipment to a PE device orientation exists data surface failure of connectivity.
2. the method for claim 1, is characterized in that, a PE equipment determines that the pseudo-circuit between self and the 2nd PE equipment exists data surface failure of connectivity, specifically comprises:
The one PE equipment sends probe messages instruction the 2nd PE equipment by the data surface of pseudo-circuit to the 2nd PE equipment and returns to response message from the data surface of pseudo-circuit;
In the time not receiving the response message that the 2nd PE equipment returns from the data surface of pseudo-circuit in the time of setting, determine that the pseudo-circuit between a PE equipment and the 2nd PE equipment exists data surface failure of connectivity.
3. method as claimed in claim 2, is characterized in that, describedly sends probe messages instruction the 2nd PE equipment to the 2nd PE equipment and returns to response message from process face or the data surface of pseudo-circuit, specifically comprises:
Configuration message is replied indication information, wherein, message is replied indication information and is comprised that instruction the 2nd PE equipment returns to the process face answer-mode mark of response message or instruction the 2nd PE equipment and return from the data surface of pseudo-circuit the data surface answer-mode mark of response message from the process face of pseudo-circuit;
Described message is replied to indication information to be encapsulated in and in probe messages, to send to the 2nd PE equipment.
4. method as claimed in claim 3, is characterized in that, the 2nd PE equipment returns to response message from data surface or the process face of pseudo-circuit, specifically comprises:
The probe messages that the 2nd PE equipment interconnection is received is resolved, and parses the message wherein carrying and replys indication information;
If it is data surface answer-mode when mark that the message parsing is replied indication information, return to response message from the data surface of pseudo-circuit to a PE equipment;
If it is process face answer-mode when mark that the message parsing is replied indication information, return to response message from the process of pseudo-circuit towards a PE equipment.
5. the method for claim 1, is characterized in that, when the 2nd PE equipment returns to response message from the process of pseudo-circuit towards a PE equipment, adds alarm label A lert Label in response message; Other operator's router devices that described Alert Label is used to indicate on the pseudo-circuit between the first PE equipment and the 2nd PE equipment forward response message from the process face of pseudo-circuit.
6. method as claimed in claim 4, is characterized in that, described message is replied to indication information and be encapsulated in probe messages and send to the 2nd PE equipment, specifically comprises:
The one PE equipment is replied indication information by described message and is written in the answer-mode Reply Mode field of virtual circuit connectivity checking VCCV packet message, sends to the 2nd PE equipment using writing the VCCV packet message that message replys after indication information as probe messages;
The probe messages that the 2nd PE equipment interconnection is received is resolved, and specifically comprises: the VCCV packet message receiving is resolved, and the message obtaining in Reply Mode field is replied indication information.
7. a pseudo-wire connectivity failure detector, is characterized in that, comprising:
Fault detection module, be used in the time that the pseudo-circuit between PE equipment and the opposite end PE equipment at self place exists data surface failure of connectivity, control sending module and return to response message to opposite end PE equipment transmission probe messages instruction opposite end PE equipment from the process face of pseudo-circuit by the data surface of pseudo-circuit;
Sending module, for sending probe messages to opposite end PE equipment under the control of described fault detection module;
Receiver module, receives for monitoring the response message that opposite end PE equipment returns from the process face of pseudo-circuit;
Determination module, when receive the response message that opposite end PE returns from the process face of pseudo-circuit when described receiver module, determines that opposite end PE equipment exists data surface failure of connectivity to the pseudo-circuit of the PE device orientation at self place.
8. device as claimed in claim 7, it is characterized in that, described fault detection module, specifically for: control described sending module and send probe messages by the data surface of pseudo-circuit to opposite end PE equipment, instruction opposite end PE equipment returns to response message from the data surface of pseudo-circuit; If when described receiver module does not receive the response message that opposite end PE equipment returns from the data surface of pseudo-circuit within the time of setting, determine that the pseudo-circuit between PE equipment and the opposite end PE equipment at self place exists data surface failure of connectivity;
Described receiver module, also receives for monitoring the response message that opposite end PE equipment returns from the data surface of pseudo-circuit.
9. device as claimed in claim 8, it is characterized in that, described fault detection module, reply indication information specifically for configuration message, wherein, message is replied indication information and is comprised that instruction opposite end PE equipment returns to the process face answer-mode mark of response message or instruction opposite end PE equipment and return from the data surface of pseudo-circuit the data surface answer-mode mark of response message from the process face of pseudo-circuit; Described message is replied to indication information and be encapsulated in probe messages and offer sending module, so that probe messages is sent to opposite end PE equipment by sending module.
10. device as claimed in claim 9, it is characterized in that, described fault detection module, be written to specifically for described message being replied to indication information in the answer-mode Reply Mode field of virtual circuit connectivity checking VCCV packet message, offer sending module using writing the VCCV packet message that message replys after indication information as probe messages, so that probe messages is sent to opposite end PE equipment by sending module.
11. 1 kinds of pseudo-wire connectivity failure detectors, is characterized in that, comprising:
Receiver module, receives for monitoring the probe messages that opposite end provider edge router PE equipment sends, and the PE equipment at described probe messages instruction self place returns to response message from the process face of pseudo-circuit;
Feedback control module, returns to response message for the probe messages control sending module receiving according to described receiver module from the process face of pseudo-circuit;
Sending module, returns to response message for the process face from pseudo-circuit under the control of described feedback control module.
12. devices as claimed in claim 11, is characterized in that, described receiver module also receives for monitoring the probe messages that opposite end PE equipment sends, and the PE equipment at described probe messages instruction self place returns to response message from the data surface of pseudo-circuit;
Feedback control module, also returns to response message for sending module described in the probe messages control receiving according to described receiver module from the data surface of pseudo-circuit;
Sending module, also returns to response message for the data surface from pseudo-circuit under the control of described feedback control module.
13. devices as claimed in claim 12, is characterized in that, described feedback control module is replied indication information specifically for the probe messages receiving being resolved to, parse the message wherein carrying; If it is data surface answer-mode when mark that the message parsing is replied indication information, controls sending module and return to response message from the data surface of pseudo-circuit to opposite end PE equipment; If it is process face answer-mode when mark that the message parsing is replied indication information, controls sending module and return to response message from the process of pseudo-circuit towards opposite end PE equipment.
14. devices as claimed in claim 13, is characterized in that, described feedback control module, while returning to response message specifically for the process from pseudo-circuit towards opposite end PE equipment, is added alarm label A lert Label in response message; Other operator's router devices that described Alert Label is used to indicate on the pseudo-circuit between PE equipment and the opposite end PE equipment at self place forward response message from the process face of pseudo-circuit.
15. 1 kinds of provider edge router equipment, is characterized in that, comprise pseudo-wire connectivity failure detector as described in as arbitrary in claim 7-10 and/or as arbitrary in claim 11-14 as described in pseudo-wire connectivity checkout gear.
16. 1 kinds of pseudo-wire connectivity fault detection systems, is characterized in that, comprising:
At least one comprises that the provider edge router equipment of the pseudo-wire connectivity failure detector as described in as arbitrary in claim 7-10 and at least one comprise the provider edge router equipment of the pseudo-wire connectivity failure detector as described in as arbitrary in claim 11-14; Or
At least two comprise the pseudo-wire connectivity failure detector as described in as arbitrary in claim 7-10 and as arbitrary in claim 11-14 as described in the provider edge router equipment of pseudo-wire connectivity checkout gear; Or
At least one comprise the provider edge router equipment of the pseudo-wire connectivity failure detector as described in as arbitrary in claim 7-10 and at least one comprise pseudo-wire connectivity failure detector as described in as arbitrary in claim 7-10 and as arbitrary in claim 11-14 as described in the provider edge router equipment of pseudo-wire connectivity failure detector; Or
At least one comprise the provider edge router equipment of the pseudo-wire connectivity failure detector as described in as arbitrary in claim 11-14 and at least one comprise pseudo-wire connectivity failure detector as described in as arbitrary in claim 7-10 and as arbitrary in claim 11-14 as described in the provider edge router equipment of pseudo-wire connectivity failure detector.
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| CN201110210423.2A CN102271064B (en) | 2011-07-26 | 2011-07-26 | Pseudo wire connectivity failure detection method, device and system |
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| CN105429841B (en) * | 2014-09-15 | 2020-01-07 | 中兴通讯股份有限公司 | NNI PING implementation method and device |
| CN114301806B (en) * | 2021-12-31 | 2023-05-30 | 网络通信与安全紫金山实验室 | Virtual network connectivity detection method, device, equipment and storage medium |
| CN115378816B (en) * | 2022-08-02 | 2024-02-23 | 深信服科技股份有限公司 | Network configuration detection method, device and storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1874298A (en) * | 2005-12-13 | 2006-12-06 | 华为技术有限公司 | Method for checking up phantom lines in multiple hops through simulation of phantom line from edge to edge |
| CN1878135A (en) * | 2006-01-17 | 2006-12-13 | 华为技术有限公司 | Method for judging pseudo wire connection state in packet-switching network and service apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1874298A (en) * | 2005-12-13 | 2006-12-06 | 华为技术有限公司 | Method for checking up phantom lines in multiple hops through simulation of phantom line from edge to edge |
| CN1878135A (en) * | 2006-01-17 | 2006-12-13 | 华为技术有限公司 | Method for judging pseudo wire connection state in packet-switching network and service apparatus |
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