CN104639385B - Detect the method and apparatus of L2VPN network user's side interface connectivity - Google Patents

Detect the method and apparatus of L2VPN network user's side interface connectivity Download PDF

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Publication number
CN104639385B
CN104639385B CN201310571868.2A CN201310571868A CN104639385B CN 104639385 B CN104639385 B CN 104639385B CN 201310571868 A CN201310571868 A CN 201310571868A CN 104639385 B CN104639385 B CN 104639385B
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icmp
client
equipment
request message
configuration information
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CN104639385A (en
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张岩
吴瑞
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ZTE Corp
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ZTE Corp
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Priority to PCT/CN2014/080756 priority patent/WO2015070614A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/10—Active monitoring, e.g. heartbeat, ping or trace-route
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
    • H04L43/0805—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability
    • H04L43/0811—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability by checking connectivity

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Cardiology (AREA)
  • General Health & Medical Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

The present invention relates to a kind of method and apparatus for detecting L2VPN network user's side interface connectivity, the described method comprises the following steps: Packet Transport Network equipment initiates test bind command, and obtains configuration information according to test bind command row；After detecting that the configuration information is matched to CIP access way, ICMP request message is generated according to the configuration information and the ICMP request message is sent to client's network edge equipment；The ICMP response message returned by client's network edge equipment described in the corresponding interface of the CIP access way, the connectivity between client's network edge equipment and the user side interface of Packet Transport Network equipment is determined according to the ICMP request message and ICMP response message, the present invention detects the operating method simple and flexible of the connectivity of client's network edge equipment and Packet Transport Network equipment user's side interface, improves detection efficiency.

Description

Detect the method and apparatus of L2VPN network user's side interface connectivity
Technical field
The present invention relates to network communication technology field more particularly to a kind of detection L2VPN network user side interface connectivity Method and apparatus.
Background technique
Currently, the business of more and more types is run on the internet, fault detection, the management etc. of network are proposed more High requirement, the switching equipment and optical network device that Carrier Requirements device manufacturer provides must support OAM(Operation Administration and Maintenance, operation management and maintenance) function, with can to some Network Abnormal problems into Row detection in time, the function of restoring and manage.
PTN(Packet Transport Network, Packet Transport Network) access device of the equipment as IPization base station when, Usually to UNI(User node interface, user side interface) side ports configuration port, the modes such as port+vlan and access L2VPN network.When base station (or PC) business breaks down (such as service disconnection), need to detect the side UNI of base station and PTN device Between whether can be connected to.
Many methods use CFM(Connectivity Fault Management, connection error management in the prior art) And MAC-PING detects the connectivity of the uni port of base station and PTN device, but have many base stations be do not support CFM, and It cannot know the mac address information of base station, so the use of MAC-PING has certain limitation, operating method is complex.
Summary of the invention
The main purpose of the present invention is to provide a kind of method for detecting L2VPN network user's side interface connectivity and set It is standby, it is intended to improve the spirit of the operating method of the connectivity of detection client's network edge equipment and Packet Transport Network equipment user's side interface Activity simplifies operation, improves detection efficiency.
In order to achieve the above object, the present invention proposes a kind of method for detecting L2VPN network user's side interface connectivity, packet Include following steps:
Packet Transport Network equipment initiates test bind command, and obtains configuration information according to test bind command；
After detecting that the configuration information is matched to CIP access way, ICMP request is generated according to the configuration information The ICMP request message is simultaneously sent to client's network edge equipment by message；
Report is responded by the ICMP that client's network edge equipment described in the corresponding interface of the CIP access way returns Text determines client's network edge equipment and Packet Transport Network equipment according to the ICMP request message and ICMP response message Connectivity between user side interface.
Preferably, the Packet Transport Network equipment initiates test bind command, and is configured according to test bind command The step of information includes:
Source IP address, purpose IP address, vlan information and physics exit port are obtained according to test bind command row；
What is judged the test whether bind command issue is smart group interface, and judges the Packet Transport Network Whether equipment is centralized device；
If the result of judgement is to be, the member interface information of the smart group interface is obtained, and described in integration Source IP address, purpose IP address, the member interface information of vlan information, physics exit port and smart group interface, obtain institute State configuration information.
Preferably, described after configuration information is matched to CIP access way, ICMP request is generated according to the configuration information The message and the step of ICMP request message is sent to client's network edge equipment includes:
It is after detecting that the vlan information and physics exit port are matched to CIP access way, the configuration information is raw At ICMP request message and encapsulate the ICMP request message；
Judging whether can be according to corresponding in the ARP table of the destination IP address search to the Packet Transport Network plant maintenance MAC Address, if so, the ICMP request message is sent to client's network edge equipment according to the MAC Address.
Preferably, described after detecting that the configuration information is matched to CIP access way, it is raw according to the configuration information Before the step of at ICMP request message and the ICMP request message is sent to client's network edge equipment further include:
Acl rule is added according to the configuration information.
Preferably, described that client's network edge equipment and grouping are determined according to ICMP request message and ICMP response message The step of connectivity between the user side interface of transmission net equipment includes:
The ICMP response message and arp response message are sent to central processing unit by the acl rule；
The central processing unit by detect the ICMP response message content whether with the ICMP request message Connectivity between content corresponding determination client's network edge equipment and the user side interface of Packet Transport Network equipment.
The present invention also provides a kind of Packet Transport Network equipment, comprising:
Module is obtained, obtains configuration information for initiating test bind command, and according to test bind command；
Message sending module, for after detecting that the configuration information is matched to CIP access way, according to the configuration Information generates ICMP request message and the ICMP request message is sent to client's network edge equipment；
Determining module, for being returned by client's network edge equipment described in the corresponding interface of the CIP access way ICMP response message, client's network edge equipment and grouping are determined according to the ICMP request message and ICMP response message Connectivity between the user side interface of transmission net equipment.
Preferably, the acquisition module includes:
Acquiring unit, for obtaining source IP address, purpose IP address, vlan information and physics according to test bind command row Exit port；
Judging unit, what whether bind command issued for judging the test is smart group interface, and judges institute State whether Packet Transport Network equipment is centralized device；
Integral unit obtains the member interface letter of the smart group interface if the result for judgement is to be Breath, and the member for integrating the source IP address, purpose IP address, vlan information, physics exit port and smart group interface connects Message breath, obtains the configuration information.
Preferably, the message sending module includes:
Encapsulation unit, for after detecting that the vlan information and physics exit port are matched to CIP access way, according to The configuration information generates ICMP request message and encapsulates the ICMP request message；
Judging unit, for judge whether can be according to the destination IP address search to the Packet Transport Network plant maintenance ARP table in corresponding MAC Address；
Transmission unit, for the ICMP request message to be sent to client's network edge equipment according to the MAC Address.
Preferably, further includes:
Adding module, for adding acl rule according to the configuration information.
Preferably, the determining module includes:
Transmission unit, for the ICMP response message and arp response message to be sent to center by the acl rule Processor；
Determination unit, for the content by detecting the ICMP response message whether in the ICMP request message Hold the connectivity between corresponding determination client's network edge equipment and the user side interface of Packet Transport Network equipment.
A kind of method and apparatus for detecting L2VPN network user's side interface connectivity of the present invention, is set by Packet Transport Network The test bind command of received shipment row obtains configuration information, after the configuration information is matched to CIP access way, Packet Transport Network equipment It sends ICMP request message and receives the ICMP response message of client's network edge equipment return, according to from Packet Transport Network equipment The ICMP response message returned is managed, and determines the company between client's network edge equipment and the user side interface of Packet Transport Network equipment The general character, since invention is CIP access way, Packet Transport Network equipment and the realization of client's network edge equipment are direct-connected, need not move through Router, i.e., not across jump, implementation method is simple, and there are many CIP access ways, it can be carried out according to different CIP access ways Selection, operating method is flexible, greatly improves detection efficiency.
Detailed description of the invention
Fig. 1 is the flow diagram of one embodiment of method of present invention detection L2VPN network user's side interface connectivity；
Fig. 2 is the flow diagram of the configuration information obtained shown in Fig. 1 according to test bind command row；
Fig. 3 is the flow diagram that ICMP request message is sent to client's network edge equipment shown in Fig. 1；
Fig. 4 is determined between client's network edge equipment and the user side interface of Packet Transport Network equipment shown in Fig. 1 The flow diagram of connectivity；
Fig. 5 is the structural schematic diagram of one embodiment of Packet Transport Network equipment of the present invention；
Fig. 6 is the structural schematic diagram that one embodiment of module is obtained shown in Fig. 5；
Fig. 7 is the structural schematic diagram of one embodiment of message sending module shown in Fig. 5；
Fig. 8 is the structural schematic diagram of the embodiment of determining module one shown in Fig. 5.
In order to keep the technical solution of invention clearer, clear, it is described in further detail below in conjunction with attached drawing.
Specific embodiment
Specifically, as shown in Figure 1, one embodiment of the invention proposes a kind of detection L2VPN network user side interface connectivity Method, comprising:
Step S101, Packet Transport Network equipment initiates test bind command, and is obtained according to test bind command with confidence Breath；
Wherein, test bind command can be uni-ping order.
Wherein, Packet Transport Network equipment executes test bind command, the available source IP in test bind command row Location, purpose IP address, physics exit port and vlan information etc., source IP address, purpose IP address, physics exit port are that user is necessary Specified information, vlan information include svlan and priority, cvlan information etc., and svlan and priority, cvlan information are to use Family can choose specified information.User can specify different information according to different CIP access ways.
Wherein, purpose IP address can be arbitrarily selected, but as long as keeping source IP address and purpose IP address in same network segment ?.
Wherein, the termination condition for testing bind command includes: 1, during testing bind command and executing, if overtime ICMP response message is not received, then in user interface print prompt information " ".2, during testing bind command execution Ctrl+c key is pressed, then is terminated.
For executing uni-ping order, in order to not influence the ARP(Address of public network ResolutionProtocol, address resolution protocol) table, which needs to separately maintain an ARP table.ARP table It is a global table.Public network ARP table is in PROTOCOL process creation, addition, deletion and access.And due to uni-ping Order is initiated in PING process, and the creation and inquiry of the ARP table of uni-ping are also in the processing of ping process.Here for The ARP message that client network edge equipment side is responded needs unification to be delivered to the completion of ping process from PROTOCOL process in packet receiving And the operation such as management of ARP table.The present embodiment mainly prevents multi-process from causing multi-process to visit an ARP table operation simultaneously Ask conflict.Packet Transport Network equipment can obtain the MAC Address of client's network edge equipment from the ARP table, can also be from client's net MAC Address of the ARP Receive message that edge device side is responded to client's network edge equipment.
Step S102 is generated after detecting that the configuration information is matched to CIP access way according to the configuration information The ICMP request message is simultaneously sent to client's network edge equipment by ICMP request message；
Wherein, which is unicast ICMP request message.Client's network edge equipment includes but is not limited to base It stands or PC etc..
Wherein, there are many CIP access ways, including physics exit port access way, the access side physics exit port+VLAN Formula, physics exit port+SVLAN access way etc..Configuration information must be consistent with CIP access way.It sends every time It requires whether detection configuration information is matched to CIP access way before ICMP request message, prevents abnormal conditions and delete CIP and connect Enter mode or the result of detection mistake occurs.
Wherein, after detecting that configuration information is matched to CIP access way, Packet Transport Network equipment sends ICMP request report Text gives client's network edge equipment, and client's network edge equipment is waited to return to ICMP response message.
Step S103 is returned by client's network edge equipment described in the corresponding interface of the CIP access way ICMP response message determines that client's network edge equipment and grouping pass according to the ICMP request message and ICMP response message Send the connectivity between the user side interface of net equipment.
After Packet Transport Network equipment is matched to CIP access way and sends ICMP request message, pass through CIP access way The ICMP response message that corresponding interface client network edge equipment returns, to ICMP request message and ICMP response message into After row processing, the connectivity between client's network edge equipment and the user side interface of Packet Transport Network equipment can be determined.
In a preferred embodiment, before the step of ICMP request message being sent to client's network edge equipment further include: Acl rule is added according to the configuration information.Specifically: configuration information is sent to the driving of Packet Transport Network equipment, by driving Dynamic addition ACL(Access Control List, accesses control list) rule, by being somebody's turn to do when receiving ICMP response message Acl rule sends ICMP response message to central processing unit and is handled.
When encountering abnormal conditions (such as restarting line card), acl rule will not come into force, and need to delete the acl rule then weight Acl rule newly is issued, former acl rule is avoided to remain.
At the end of testing bind command, need that driving is notified to delete acl rule information corresponding with test bind command, Save driving ACL table item space.
Wherein, in a preferred embodiment, as shown in Fig. 2, above-mentioned steps S101 the following steps are included:
Step S1011 obtains source IP address, purpose IP address, vlan information and physics according to test bind command row and goes out Port；
Step S1012 judges that testing bind command and whether issuing is smart group interface；If smart group Interface then enters step S1013, if not smart group interface, then enter step S1014；
Step S1013 obtains the member interface information of the smart group interface, enters step S1014；
Step S1014 judges whether the Packet Transport Network equipment is centralized device；If so, entering step S1016, if it is not, then entering step S1015；
Step S1015 is handled on photos and sending messages to line card, enters step S1016；
Step S1016 integrates source IP address, purpose IP address, vlan information, physics exit port and smart group and connects The member interface information of mouth, obtains configuration information.
Wherein, associated timer can be created before step S1012, it may include overtime timer, speed limit timer, OAM Echo scanning timer etc..Speed limit timer is that the number given out a contract for a project is controlled in some cycles.At the end of testing bind command, Delete the timer information of creation.
Wherein, when Packet Transport Network equipment is distributed apparatus, then testing bind command is that master control is being handled, and needs to believe Breath, which is dealt on line card, to be handled.
Wherein, in a preferred embodiment, as shown in figure 3, above-mentioned steps S102 the following steps are included:
Step S1021, after detecting that the vlan information and physics exit port are matched to CIP access way, according to institute State configuration information generate ICMP request message after and encapsulate the ICMP request message；
Step S1022, judging whether can be according to the destination IP address search to the Packet Transport Network plant maintenance In ARP table otherwise corresponding MAC Address enters step S1023 if so, entering step S1024；
Step S1023 caches ICMP request message, broadcast transmission ARP request message, study client's network edge equipment ARP is added in the ARP table of test connection process maintenance after study is to ARP；
The ICMP request message is sent to client's network edge equipment by step S1024.
Wherein, in the payload segment for encapsulating the ICMP request message, the verification of ICMP request message is calculated with after, encapsulation Corresponding IP packet payload segment and calculate IP packet verification and.
It wherein, source IP address to ICMP request message, destination IP if the ARP of client's network edge equipment can be learnt The information such as address, physics exit port carry out checking for test concatenate rule, meet, and are added to test connection process maintenance ARP table in.
Wherein, in a preferred embodiment, as shown in figure 4, above-mentioned steps S103 the following steps are included:
The ICMP response message and arp response message are sent to centre by the acl rule by step S1031 Manage device；
Step S1032, the central processing unit by detect the ICMP response message content whether with the ICMP Between the content of request message corresponding determination client's network edge equipment and the user side interface of Packet Transport Network equipment Connectivity.
The process of the present embodiment central processing unit processing ICMP response message are as follows: by the content for detecting ICMP response message With whether the content of ICMP request message corresponding judges between client's network edge equipment and the side UNI of Packet Transport Network equipment Whether can be connected to.The content and ICMP request message content of ICMP response message be not in addition to head is identical, other contents It is all identical.Specific detection process includes: to detect whether ICMP response message is ICMP request message that its own sends Response, if so, further whether the content of detection ICMP response message is corresponding with the content of ICMP request message, if so, Then connectivity is preferable between client's network edge equipment and the side UNI of Packet Transport Network equipment.
Further, after receiving the ICMP response message of client's network edge equipment, ICMP request message can be calculated from hair It is sent to the RTT (Round-Trip Time, round-trip delay) for receiving this period of time of ICMP response message.RTT can be one Determine the distance for reflecting distance between two points in degree, can also be used as detection client's network edge equipment and Packet Transport Network equipment A reference value of connectivity between the side UNI.
Specifically, timestamp can be stamped when sending ICMP request message and saved, obtain and work as in echo message The difference of preceding timestamp, the two is exactly the numerical value of RTT.The maximum/minimum of continuous ping packet/be averaged can also be calculated simultaneously The time of shake.Calculation method is as follows: if the ICMP response message quantity that receives is greater than 1, being calculated with this RTT value subtracts the last RTT value calculated, the as time difference of this shake.When the ICMP response message number received When amount is just 2, the time of maximum jitter at this time and minimum jitter time are all current shaky time.When the response message received When quantity is greater than 2, current shaky time is recalculated, and carry out with maximum jitter time before and minimum jitter time Compare.If current shaky time be greater than before the maximum jitter time, using current shaky time as at present most Big shaky time.If current shaky time be less than before the minimum jitter time, using current shaky time as mesh The preceding minimum jitter time.
Through the above description it can be seen that the present embodiment is obtained by the operation test bind command of Packet Transport Network equipment Configuration information, after the configuration information is matched to CIP access way, Packet Transport Network equipment sends ICMP request message and receives Client's network edge equipment return ICMP response message, according to from Packet Transport Network equipment processing returns to ICMP response message, And determine the connectivity between client's network edge equipment and the user side interface of Packet Transport Network equipment, since the present embodiment is CIP access way, Packet Transport Network equipment and client's network edge equipment are realized direct-connected, need not move through router, i.e., not across jump, Implementation method is simple, and there are many CIP access ways, it can be selected according to different CIP access ways, operating method spirit It is living, greatly improve detection efficiency.
As shown in figure 5, one embodiment of the invention proposes that a kind of Packet Transport Network equipment, Packet Transport Network equipment include:
Module 101 is obtained, obtains configuration information for initiating test bind command, and according to test bind command；
Wherein, test bind command can be uni-ping order.
Wherein, Packet Transport Network equipment executes test bind command, the available source IP in test bind command row Location, purpose IP address, physics exit port and vlan information etc., source IP address, purpose IP address, physics exit port are that user is necessary Specified information, vlan information include svlan and priority, cvlan information etc., and svlan and priority, cvlan information are to use Specified information can may be selected in family.User can specify different information according to different CIP access ways.
Wherein, purpose IP address can be arbitrarily selected, but as long as keeping source IP address and purpose IP address in same network segment ?.
For executing uni-ping order, in order to not influence the ARP(Address Resolution of public network Protocol, address resolution protocol) table, which needs to separately maintain an ARP table.ARP table is an overall situation Table.Public network ARP table is in PROTOCOL process creation, addition, deletion and access.And due to uni-ping order be What ping process was initiated, the creation and inquiry of the ARP table of uni-ping are also in the processing of ping process.Here for client's selvage The ARP message that edge equipment side is responded needs unification to be delivered to the completion of PING process and ARP from PROTOCOL process in packet receiving The operation such as management of table.The present embodiment mainly prevents multi-process from causing multi-process access conflict to an ARP table operation simultaneously. Packet Transport Network equipment can obtain the MAC Address of client's network edge equipment from the ARP table, can also be from client's network edge equipment MAC Address of the ARP Receive message that side is responded to client's network edge equipment.
Message sending module 102, for after detecting that the configuration information is matched to CIP access way, according to described Configuration information generates ICMP request message and the ICMP request message is sent to client's network edge equipment；
Wherein, which is unicast ICMP request message.
Wherein, there are many CIP access ways, including physics exit port access way, the access side physics exit port+VLAN Formula, physics exit port+SVLAN access way etc..Configuration information must be consistent with CIP access way.
Wherein, after detecting that configuration information is matched to CIP access way, the message sending module of Packet Transport Network equipment 102 transmission ICMP request messages give client's network edge equipment, and client's network edge equipment is waited to return to ICMP response message.
Message processing module (MPM) 103, for being set by client's network edge described in the corresponding interface of the CIP access way The standby ICMP response message returned, determines client's network edge equipment according to the ICMP request message and ICMP response message Connectivity between the user side interface of Packet Transport Network equipment.
After being matched to CIP access way and sending ICMP request message, message processing module (MPM) 103 passes through the access side CIP The ICMP response message that the corresponding interface client network edge equipment of formula returns, to ICMP request message and ICMP response message After being handled, the connectivity between client's network edge equipment and the user side interface of Packet Transport Network equipment can be determined.
In a preferred embodiment, Packet Transport Network equipment further includes adding module, for being added according to the configuration information Add acl rule.Specifically: configuration information is sent to the driving of Packet Transport Network equipment, ACL(Access is added by driving Control List, accesses control list) rule, ICMP is sent by the acl rule when receiving ICMP response message and is answered Message to central processing unit is answered to be handled.
Wherein, in a preferred embodiment, as shown in fig. 6, acquisition module 101 includes:
Acquiring unit 1011, for according to test bind command row obtain source IP address, purpose IP address, vlan information and Physics exit port；
Judging unit 1012, what whether bind command issued for judging the test is smart group interface, and is sentenced Whether the Packet Transport Network equipment of breaking is centralized device；
Integral unit 1013, if the result for judgement is to be, the member for obtaining the smart group interface is connect Message breath, and integrate the source IP address, purpose IP address, vlan information, physics exit port and smart group interface at Member's interface message, obtains the configuration information.
Wherein, associated timer can be created, it may include overtime timer, speed limit timer, OAM echo scanning timer Deng.Speed limit timer is that the number given out a contract for a project is controlled in some cycles.
Wherein, when Packet Transport Network equipment is distributed apparatus, then testing bind command is that master control is being handled, and needs to believe Breath, which is dealt on line card, to be handled.
Wherein, in a preferred embodiment, as shown in fig. 7, message sending module 102 includes:
Encapsulation unit 1021, for after detecting that the vlan information and physics exit port are matched to CIP access way, ICMP request message is generated according to the configuration information and encapsulates the ICMP request message；
Judging unit 1022, for judge whether can be according to the destination IP address search to the Packet Transport Network equipment Corresponding MAC Address in the ARP table of maintenance；
Transmission unit 1023 is set for the ICMP request message to be sent to client's network edge according to the MAC Address It is standby.
Wherein, in the payload segment for encapsulating the ICMP request message, the verification of ICMP request message is calculated with after, encapsulation Corresponding IP packet payload segment and calculate IP packet verification and.
It wherein, source IP address to ICMP request message, destination IP if the ARP of client's network edge equipment can be learnt The information such as address, physics exit port carry out checking for test concatenate rule, meet, and are added to test connection process maintenance ARP table in.
In a preferred embodiment, as shown in figure 8, determining module 103 includes:
Transmission unit 1031, for being sent to the ICMP response message and arp response message by the acl rule Central processing unit；
Determination unit 1032, for the content by detecting the ICMP response message whether with the ICMP request message Content corresponding determination client's network edge equipment and the user side interface of Packet Transport Network equipment between connectivity.
The present embodiment handles ICMP response message specifically: is requested by the content and ICMP that detect ICMP response message Whether the content of message is corresponding to judge whether can to connect between client's network edge equipment and the side UNI of Packet Transport Network equipment It is logical.For the content and ICMP request message content of ICMP response message in addition to head is not identical, other contents are all identical.Tool The detection process of body include: detect ICMP response message whether be its own send ICMP request message response, if so, Whether the content for further detecting ICMP response message is corresponding with the content of ICMP request message, if so, client's network edge Connectivity is preferable between equipment and the side UNI of Packet Transport Network equipment.
Further, after receiving the ICMP response message of client's network edge equipment, ICMP request message can be calculated from hair It is sent to the RTT (Round-Trip Time, round-trip delay) for receiving this period of time of ICMP response message.RTT can be one Determine the distance for reflecting distance between two points in degree, can also be used as detection client's network edge equipment and Packet Transport Network equipment A reference value of connectivity between the side UNI.
Specifically, timestamp can be stamped when sending ICMP request message and saved, obtain and work as in echo message The difference of preceding timestamp, the two is exactly the numerical value of RTT.The maximum/minimum of continuous ping packet/be averaged can also be calculated simultaneously The time of shake.Calculation method is as follows: if the ICMP response message quantity that receives is greater than 1, being calculated with this RTT value subtracts the last RTT value calculated, the as time difference of this shake.When the ICMP response message number received When amount is just 2, the time of maximum jitter at this time and minimum jitter time are all current shaky time.When the response message received When quantity is greater than 2, current shaky time is recalculated, and carry out with maximum jitter time before and minimum jitter time Compare.If current shaky time be greater than before the maximum jitter time, using current shaky time as at present most Big shaky time.If current shaky time be less than before the minimum jitter time, using current shaky time as mesh The preceding minimum jitter time.
The above description is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all utilizations Equivalent structure made by description of the invention and accompanying drawing content or process transformation, are applied directly or indirectly in other relevant skills Art field, is included within the scope of the present invention.

Claims (8)

1. a kind of method for detecting L2VPN network user's side interface connectivity, which comprises the following steps:
Packet Transport Network equipment initiates test bind command, and obtains configuration information according to test bind command, described to match confidence Breath includes vlan information and physics exit port；
After detecting that vlan information and physics exit port are matched to CIP access way in the configuration information, by the configuration Information generates ICMP request message and encapsulates the ICMP request message；
Judge whether to find the ARP table of the Packet Transport Network plant maintenance according to purpose IP address in the configuration information In corresponding MAC Address, if so, the ICMP request message is sent to client's network edge equipment according to the MAC Address；
The ICMP response message returned by client's network edge equipment described in the corresponding interface of the CIP access way, root The user of client's network edge equipment and Packet Transport Network equipment is determined according to the ICMP request message and ICMP response message Connectivity between side interface.
2. the method according to claim 1, wherein the Packet Transport Network equipment initiate test bind command, And the step of obtaining configuration information according to test bind command, includes:
Source IP address, purpose IP address, vlan information and physics exit port are obtained according to test bind command row；
What is judged the test whether bind command issue is smart group interface, and judges the Packet Transport Network equipment It whether is centralized device；
If the result of judgement is to be, the member interface information of the smart group interface is obtained, and integrate the source IP Address, purpose IP address, the member interface information of vlan information, physics exit port and smart group interface, obtain described match Confidence breath.
3. according to the method described in claim 2, it is characterized in that, when detecting vlan information and physics in the configuration information After exit port is matched to CIP access way, ICMP request message is generated according to the configuration information and requests to report by the ICMP Text was sent to before the step of client's network edge equipment further include:
Acl rule is added according to the configuration information.
4. according to the method described in claim 3, it is characterized in that, described true according to ICMP request message and ICMP response message The step of connectivity between fixed client's network edge equipment and the user side interface of Packet Transport Network equipment includes:
The ICMP response message and arp response message are sent to central processing unit by the acl rule；
The central processing unit by detect the ICMP response message content whether the content with the ICMP request message Connectivity between corresponding determination client's network edge equipment and the user side interface of Packet Transport Network equipment.
5. a kind of Packet Transport Network equipment characterized by comprising
Module is obtained, obtains configuration information, the configuration information for initiating test bind command, and according to test bind command Including vlan information and physics exit port；
Message sending module, for after detecting that the vlan information and physics exit port are matched to CIP access way, by institute It states configuration information to generate ICMP request message and encapsulate the ICMP request message, and judging whether can be according to mesh in configuration information IP address find corresponding MAC Address in the ARP table of the Packet Transport Network plant maintenance, if so, according to the MAC The ICMP request message is sent to client's network edge equipment by address；
Determining module, for what is returned by client's network edge equipment described in the corresponding interface of the CIP access way ICMP response message determines that client's network edge equipment and grouping pass according to the ICMP request message and ICMP response message Send the connectivity between the user side interface of net equipment.
6. Packet Transport Network equipment according to claim 5, which is characterized in that the acquisition module includes:
Acquiring unit, for obtaining source IP address, purpose IP address, vlan information and physics outlet according to test bind command row Mouthful；
Judging unit, what whether bind command issued for judging the test is smart group interface, and judges described point Whether group transmission net equipment is centralized device；
Integral unit obtains the member interface information of the smart group interface if the result for judgement is to be, And integrate the member interface of the source IP address, purpose IP address, vlan information, physics exit port and smart group interface Information obtains the configuration information.
7. Packet Transport Network equipment according to claim 6, which is characterized in that further include:
Adding module, for adding acl rule according to the configuration information.
8. Packet Transport Network equipment according to claim 7, which is characterized in that the determining module includes:
Transmission unit, for the ICMP response message and arp response message to be sent to central processing by the acl rule Device；
Determination unit, for the content by detecting the ICMP response message whether the content phase with the ICMP request message The corresponding connectivity determined between client's network edge equipment and the user side interface of Packet Transport Network equipment.
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