CN108111327A - Network operations management maintaining method and device - Google Patents
Network operations management maintaining method and device Download PDFInfo
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- CN108111327A CN108111327A CN201611054024.0A CN201611054024A CN108111327A CN 108111327 A CN108111327 A CN 108111327A CN 201611054024 A CN201611054024 A CN 201611054024A CN 108111327 A CN108111327 A CN 108111327A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/46—Interconnection of networks
- H04L12/4641—Virtual LANs, VLANs, e.g. virtual private networks [VPN]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/08—Configuration management of networks or network elements
- H04L41/0803—Configuration setting
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- Computer Networks & Wireless Communication (AREA)
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- Data Exchanges In Wide-Area Networks (AREA)
Abstract
Embodiment of the disclosure discloses network operations management maintaining method and device.A kind of network operations management maintaining method includes：At VPLS service edge nodes (VPLS PE), it is located at the VPLS PE nodes to root and carries operator's multicast tree (P2MP MPLS LSP) of the VPLS flux of multicast, sends the OAM data bag for including VPLS multicast operations management service (VPLS multicast OAM) request message；And the response message for being directed to the OAM request messages is received, wherein the OAM request messages include：Operator multicast tree mark, VPLS marks, responsive node information and tracking information is optionally route, the response message includes：Operator's multicast tree mark, VPLS identify and optionally route tracking information.Can realize one of disclosed method and device has the technical effect that, various network operations management maintenances, such as the continuity testing in VPLS multicast packets path or routing tracking and testing are carried out to VPLS multicast packets path.
Description
Technical field
Embodiment of the disclosure is related to the communication technology, relates more specifically to network operations management maintaining method and device.
Background technology
Currently, VPLS (Virtual Private LAN Service) is a kind of popular VPN (Virtual Private Network) technology.And net
It is the important tool operated, managed to network, safeguarded that network, which operates, manages, safeguarding (OAM) instrument,.Internet Engineering Task
6425 specifications of group (IETF) RFC are directed to P2MP MPLS (point-to-multipoint, multiprotocol label switching) LSP (label switched path)
Data path OAM instruments.However, due to the different encapsulation format of VPLS multicast packets and general MPLS multicast packets, RFC
6425 are not directly applicable VPLS multicasts.Therefore a kind of improved OAM instruments are needed.
The content of the invention
According to the disclosure in a first aspect, disclose a kind of network operations management maintaining method, including：In VPLS business
At fringe node (VPLS Provider Edge, VPLS PE), it is located at the VPLS PE nodes to root and carries the VPLS multicasts
Operator's multicast tree (P2MP MPLS LSP) of flow is sent comprising VPLS multicast operations management service (OAM) request message
OAM data bag；And the response message for being directed to the OAM request messages is received, wherein the OAM request messages include：Operation
Business's multicast tree mark, VPLS marks and optionally route tracking information at responsive node information, and the response message includes：Operation
Business's multicast tree mark, VPLS identify and optionally route tracking information.
In one embodiment, operator's multicast tree includes：Inclusive operator multicast tree or selective operator
Multicast tree.
In one embodiment, the OAM request messages and the OAM response messages are respectively encapsulated with predetermined
In the payload of the UDP message of UDP port number.
In one embodiment, it is network address for encapsulating the purpose IP address of the UDP message of the OAM request messages
For the arbitrary IP address of 127.0.0.0/8, source IP address is the IP address of described VPLS PE node；For encapsulating the OAM
The purpose IP address of the UDP message of response message is the IP address of described VPLS PE node.
In one embodiment, the OAM request messages and the OAM response messages further include at least one of：Version
This number, OAM message type, life span, response modes, error code, promoter's handle, sequence number, sending time stamp, receive
Timestamp.
In one embodiment, operator's multicast tree mark, VPLS marks, the responsive node information and institute
Routing tracking information is stated to be encapsulated in respective Type-Length-Value format.
In one embodiment, the OAM response messages include the result or error code that network operations management is safeguarded.
In one embodiment, the network operations management safeguards the continuity testing for VPLS multicast packets path or road
It is encapsulated in by tracking and testing and for the test result of the routing tracking and testing in Type-Length-Value format.
According to the second aspect of the disclosure, a kind of network operations management maintaining method is disclosed, including：In carrying VPLS
At the downstream VPLS PE nodes that operator's multicast tree (P2MP MPLS LSP) of flux of multicast is passed through, receive comprising operation pipe
Reason safeguards the OAM data bag of (OAM) request message, wherein the OAM request messages include：Operator's multicast tree mark, VPLS
Mark and optionally route tracking information at responsive node information；Identify the OAM request messages；And based on operator's multicast
Tree mark, VPLS marks and responsive node information, perform following action：For being not belonging to the downstream of VPLS examples to be measured
VPLS PE nodes forward the OAM request messages received as former state；For belonging to the downstream VPLS PE nodes of VPLS examples to be measured,
The OAM message received is first updated, then forwards updated OAM request messages again；If belong to the downstream of VPLS examples to be measured
VPLS PE nodes are in response to node again just, then in addition to normally updating and forwarding, also to sending OAM request messages
VPLS PE nodes return OAM response messages, wherein the response message includes：Operator multicast tree mark, VPLS marks and
Optional routing tracking information.
In one embodiment, the multicast tree includes：Inclusive operator multicast tree or selective operator multicast tree.
In one embodiment, the OAM request messages and the OAM response messages are respectively encapsulated with predetermined
In the payload of the UDP message of UDP port number.
In one embodiment, it is network address for encapsulating the purpose IP address of the UDP message of the OAM request messages
For the arbitrary IP address of 127.0.0.0/8, source IP address is the IP address for the VPLS PE nodes for initiating OAM request messages；For
Encapsulate VPLS PE node of the purpose IP address of the UDP message of the OAM response messages for the initiation OAM request messages
IP address.
In one embodiment, identify that the OAM request messages include：The UDP ends are extracted from the data packet of reception
Slogan；And OAM request messages are identified based on the UDP port number.
In one embodiment, the OAM request messages and the OAM response messages further include at least one of：Version
This number, OAM message type, life span, response modes, error code, promoter's handle, sequence number, sending time stamp, receive
Timestamp.
In one embodiment, operator's multicast tree mark, VPLS marks, the responsive node information and can
The routing tracking information of choosing is encapsulated in respective Type-Length-Value format.
In one embodiment, the OAM response messages include the result or error code that network operations management is safeguarded.
In one embodiment, the network operations management service mode is the continuity testing in VPLS multicast packets path
Or routing tracking and testing and the test result for the routing tracking and testing are encapsulated in Type-Length-Value format.
In one embodiment, before the OAM response messages are sent, be delayed random time intervals.
In one embodiment, the OAM request messages include life span, and updating the OAM request messages includes subtracting
Few life span.
According to the third aspect of the disclosure, a kind of network operations management maintenance device is disclosed, is located at VPLS business side
In edge node (VPLS Provider Edge, VPLS PE), including：Transmitting element is used to be located at the VPLS by root
PE nodes and the operator's multicast tree (P2MP MPLS LSP) for carrying VPLS flux of multicast are sent comprising VPLS multicast operation pipes
Reason safeguards the OAM data bag of (OAM) request message；And receiving unit, it is used to receive the sound for the OAM request messages
Message is answered, wherein the OAM request messages include：Operator multicast tree mark, VPLS marks, responsive node information and optional
Tracking information is route, the OAM response messages include：Operator's multicast tree mark, VPLS marks and optional routing tracking letter
Breath.
In one embodiment, operator's multicast tree includes：Inclusive operator multicast tree and selective operator
Multicast tree.
In one embodiment, the OAM request messages and the OAM response messages are respectively encapsulated with predetermined
In the payload of the UDP message of UDP port number.
In one embodiment, it is network address for encapsulating the purpose IP address of the UDP message of the OAM request messages
For the arbitrary IP address of 127.0.0.0/8, source IP address is the IP address of the VPLSPE nodes；It is rung for encapsulating the OAM
Answer IP address of the purpose IP address of the UDP message of message for described VPLS PE node.
In one embodiment, the OAM request messages and the OAM response messages further include at least one of：Version
This number, OAM message type, life span, response modes, error code, promoter's handle, sequence number, sending time stamp, receive
Timestamp.
In one embodiment, operator's multicast tree mark, VPLS marks, the responsive node information and can
The routing tracking information of choosing is encapsulated in respective Type-Length-Value format.
In one embodiment, the OAM response messages include the result or error code that network operations management is safeguarded.
In one embodiment, the network operations management safeguards the continuity testing for VPLS multicast packets path or road
It is encapsulated in by tracking and testing and for the test result of the routing tracking and testing in Type-Length-Value format.
According to the fourth aspect of the disclosure, a kind of network operations management maintenance device is disclosed, is located at carrying VPLS groups
It broadcasts at the downstream VPLS PE that operator's multicast tree (P2MP MPLS LSP) of flow is passed through, including：Receiving unit is used
The OAM data bag of network operations management maintenance request (OAM) message is included in reception, is asked wherein the network operations management is safeguarded
Message is asked to include：Operator multicast tree mark, VPLS marks, responsive node information and optionally it route tracking information；Identification is single
Member is used to identify the OAM request messages；And execution unit, it is used for based on operator's multicast tree mark, VPLS marks
With responsive node information, following action is performed：For being not belonging to the downstream VPLS PE nodes of VPLS examples to be measured, as former state
Forward the OAM request messages received；For belonging to the downstream VPLS PE nodes of VPLS examples to be measured, first update the OAM received and disappear
Breath, then forwards updated OAM request messages again；If belong to the downstream VPLS PE nodes of VPLS examples to be measured just again
It is in response to node, then in addition to normally updating and forwarding, also returned to the VPLS PE nodes for sending OAM request messages
OAM response messages, wherein the response message includes：Operator's multicast tree mark, VPLS marks and optional routing tracking letter
Breath.
In one embodiment, operator's multicast tree includes：Inclusive operator multicast tree or selective operator
Multicast tree.
In one embodiment, the OAM request messages and the OAM response messages are respectively encapsulated with predetermined
In the payload of the UDP message of UDP port number.
In one embodiment, it is network address for encapsulating the purpose IP address of the UDP message of the OAM request messages
For the arbitrary IP address of 127.0.0.0/8, source IP address is the IP address for the VPLS PE nodes for initiating OAM request messages；For
Encapsulate VPLS PE node of the purpose IP address of the UDP message of the OAM response messages for the initiation OAM request messages
IP address.
In one embodiment, the recognition unit is additionally operable to：The UDP port number is extracted from the data packet of reception；
And OAM request messages are identified based on the UDP port number.
In one embodiment, the OAM request messages and the OAM response messages further include at least one of：Version
This number, OAM message type, life span, response modes, error code, promoter's handle, sequence number, sending time stamp, receive
Timestamp.
In one embodiment, operator's multicast tree mark, VPLS marks, the responsive node information and can
The routing tracking information of choosing is encapsulated in respective Type-Length-Value format.
In one embodiment, the OAM response messages include the result or error code that network operations management is safeguarded.
In one embodiment, the network operations management service mode is the continuity testing in VPLS multicast packets path
Or routing tracking and testing and the test result for the routing tracking and testing are encapsulated in Type-Length-Value format.
In one embodiment, described device further includes：Delay unit, be used for send the OAM response messages it
Before, be delayed random time intervals.
In one embodiment, the OAM request messages include life span, and updating the OAM request messages includes subtracting
Few life span.
Can realize one of method and apparatus described above has the technical effect that, VPLS multicast packets path is carried out each
Kind network operations management is safeguarded, such as the continuity testing in VPLS multicast packets path or routing tracking and testing.
Description of the drawings
Fig. 1 shows the schematic diagram for the operator's multicast tree based on Tag switching that can use embodiment of the disclosure.
Fig. 2 shows the flow chart of network operations management maintaining method in accordance with an embodiment of the present disclosure.
Fig. 3 shows the format sample of TLV in accordance with an embodiment of the present disclosure.
The coded format of sub- TLV in accordance with an embodiment of the present disclosure is shown in Fig. 4.
Fig. 5 shows the example of network operations management maintenance request message and response message in accordance with an embodiment of the present disclosure
Form.
Fig. 6 shows the flow chart of the network operations management maintaining method according to another embodiment of the disclosure.
Fig. 7 shows the block diagram of network operations management maintenance device in accordance with an embodiment of the present disclosure.
Fig. 8 shows the block diagram of the network operations management maintenance device according to another embodiment of the disclosure.
Specific embodiment
Example is described implementation of the disclosure with reference to the accompanying drawings.In the following description, numerous specific details are set forth so as to
Person of ordinary skill in the field is made to be appreciated more fully and realize the disclosure.But to those of skill in the art
Member is it is evident that the implementation of the disclosure can be realized in the case of without some details in these details
Example.However, it should be understood that the disclosure is not limited to introduced specific embodiment.On the contrary, it may be considered that with institute the following
The feature and any combination of element stated implements embodiment of the disclosure.Therefore, aspect below, feature, embodiment and excellent
Point is used for illustrative purposes only, and is not to be taken as element or the restriction of claim, unless clearly proposing in the claims.
In the text, identical mark refers to identical element.As it is used herein, word " data ", " content ", " letter
Breath " and similar word convertibly use, and can be transmitted, received and/or stored according to embodiment of the disclosure to refer to
Data.Therefore, the use of any such word is not construed as the spirit and scope of limitation embodiment of the disclosure.
In addition, as it is used herein, word ' circuit ' refers to：(a) only hardware circuit realization method is (for example, in simulation electricity
Realization method in road and/or digital circuit)；(b) combination of circuit and computer program product (multiple), the computer journey
Sequence product (multiple) includes：The software and/or firmware instructions being stored on one or more computer-readable memories, described group
Unify and operated such that device performs one or more functions described herein；And (c) requirement for operation software or
The circuit (such as a, part for microprocessor (multiple) or microprocessor (multiple)) of firmware, even if the software or solid
Part is not that physics is presented.This word of (included in any claim) in this article is applied in this definition of ' circuit '
All uses.As further example, as it is used herein, word ' circuit ' also includes：It is handled including one or more
Device and/or its part (multiple) and the realization method for being accompanied by software and/or firmware.
Fig. 1 shows the signal for the operator's multicast tree 100 based on Tag switching that can use embodiment of the disclosure
Figure, operator's multicast tree are established to carry all or part of flux of multicast of 102 examples of VPLS of VPLS PE nodes A
's.As shown in Figure 1, operator's multicast tree 100 can include：Root node A, other non-root node B, C, D and E.It should be noted that
It is that multicast tree 100 can also have any other suitable tree construction and with any appropriate number of tree node.Multicast
Tree 100 can be any multicast tree that can realize Tag switching, that is to say, that can pass through tag changeable path in multicast tree
Transmit multicast packet in footpath.Label switching protocol can include existing or exploitation in future or privately owned label switching protocol.Root section
Point A, non-root node B, C, D and E can include interchanger (for example, Ethernet switch, software defined network interchanger are (such as
OpenFlow interchangers) etc.), router, computer, server, access point, cellular basestation, computing device and can realize
Any suitable equipment of Tag switching.In addition, the node in multicast tree 100 can be same type of equipment or different type
Equipment, in some embodiments, the node in multicast tree 100 can also be referred to as Provider Edge node (PE).At one
In embodiment, multicast tree can include selective operator's multicast tree (Selective Provider Multicast Tree)
Or inclusive operator multicast tree (Inclusive Provider Multicast Tree).
Different multicast trees can have different multicast trees to identify.In addition, the node in multicast tree 100 can also be it
Node (for example, root or non-root node) in its multicast tree.As an example, node A can be the root node of another multicast tree
Or non-root node.
In addition, the possible part of multiple nodes that the data path of multicast tree 100 is passed through is VPLS PE nodes, it is another
Part is P (Provider) node of non-VPLS PE, and these VPLS PE nodes may also belong to different VPLS examples.
For example, VPLS PE nodes A, C, D, E that multicast tree 100 is passed through belong to VPLS 102.Each VPLS examples have each different
VPLS mark.In multicast tree 100, acted only on for the OAM request messages that specific VPLS examples are sent and belong to this spy
Determine those VPLS PE of VPLS examples, they are referred to as VPLS PE nodes to be measured.In multicast tree 100, VPLS to be measured is not belonging to
Those VPLS PE of example are transparent to the OAM request messages of the VPLS examples, they are referred to as non-VPLS PE sections to be measured
Point.The P node that multicast tree 100 is passed through is also transparent to VPLS multicast OAM request messages.According to institute in OAM request messages
The responsive node information of carrying, a VPLS PE node to be measured, which may be sent, may not also send OAM response messages.
Connection between the node of multicast tree 100 can be any suitable network connection, such as Ethernet connection, coaxial
Cable connection, optical fiber connection, radio connection etc..In addition, although illustrating only a connection between the node of multicast tree 100,
But in other embodiments, there can be multiple connections between them.In addition, the node of multicast tree 100 can also be with other sections
Point or equipment connection (node of another multicast tree or the node of non-multicast tree, network management device/system etc.).In addition, even
It can be connected directly or indirectly to connect.
Fig. 2 shows the flow chart of network operations management maintaining method 200 in accordance with an embodiment of the present disclosure.It can be all
As the operator multicast root vertex A of Fig. 1 equipment at perform method 200.Therefore, root node A can be provided and is used to implement
The component of the various pieces of method 200 and be used to implement root node A other functions component.
As shown in Figure 2, method 200 is since frame 201.In frame 201, root node A can be by carrying VPLS
Operator's multicast tree (P2MP MPLS LSP) of flux of multicast sends and disappears comprising VPLS multicast operations management service (OAM) request
The OAM data bag of breath.As described above, can be supported in operator's multicast tree it is any suitable it is existing, in the future exploitation or
Privately owned label switching protocol.OAM data bag is data packet that is specifically defined, being forwarded according to VPLS multicast packets path.
Network operations management maintenance request message can include：Operator's multicast tree mark, VPLS marks, responsive node letter
Breath and optional routing tracking information.Operator's multicast tree mark can be the multicast tree mark or other any defined in standard
Suitable multicast tree mark.VPLS marks can be the VPLS marks or other any suitable VPLS marks defined in standard.
Network operations management service mode includes the continuity testing in VPLS multicast packets path or routing tracking and testing.
As an example, with reference to Fig. 1, if necessary to test in VPLS 102 from VPLS PE node A to VPLS PE node E,
Via the connectedness in the VPLS multicast packets path of operator's multicast tree 100, node A should send net to operator's multicast tree 100
Network operation management maintainance request message, which should include the mark of operator's multicast tree 100, VPLS 102 is identified and rung
Answer the IP address of node E.
Network operations management maintenance request message can be encapsulated in any suitable message, such as UDP (user data
Bag) in message, in the message that such as future, standard defined or in privately owned message.In one embodiment, network operations management
Maintenance request message can be encapsulated in the payload of the UDP message with predetermined UDP port number.UDP port number can be with
It is defined in the standard in future or network service operators are specified or the udp port that is defined by any other entity
Number.And the node in multicast tree 100 is known that the UDP port number.
In addition, can be net for encapsulating the destination IP address of the UDP message of network operations management maintenance request message
Network address is the arbitrary IP address of 127.0.0.0/8, and source IP address is the VPLS for sending network operations management maintenance request message
The IP address of PE nodes.
With reference to Fig. 2, in frame 204, the response that root node A can receive for network operations management maintenance request message disappears
Breath.For example, one or more nodes that root node A can be identified from responsive node information are received and tieed up for network operations management
Protect the response message of request message.Response message can include：Operator multicast tree mark, VPLS marks and optional routing with
Track information, wherein operator's multicast tree mark, VPLS marks and routing tracking information can be with the described fortune of above example
It is identical with routing tracking information to seek business's multicast tree mark, VPLS marks, therefore for reasons of clarity, no longer retouches in detail herein
It states.It should be noted that response message is not transmitted by the data path based on Tag switching, but for example by being based on IP
The data path of (Internet protocol) forwarding or other suitable data path transmission.
In one embodiment, OAM response messages are encapsulated in effective load of the UDP message with predetermined UDP port number
Lotus.For example, OAM request messages and OAM response messages can use identical UDP port number.In one embodiment, for sealing
Fill OAM response messages UDP message bag purpose IP address be the VPLS PE nodes for sending OAM request messages IP address, example
The IP address for the VPLSPE nodes for sending the OAM request messages can be such as obtained in the OAM request messages received, source address can
Be send the OAM response messages responsive node IP address.
In one embodiment, OAM response messages can include result or error code that network operations management is safeguarded.Example
Such as, OAM request messages can be verified by receiving the node of OAM request messages, such as verification version number, type of message, fortune
Seek business's multicast tree mark, VPLS marks, response modes, life span, message format etc..If OAM request messages there are mistake,
The response message comprising error code can be then sent, wherein error code can indicate type of error or code, if OAM please
Message is asked not have mistake, then receiving node can be updated and forward to the OAM message of reception；If receiving node belongs to just
In responsive node, then it will also generate that network operations management is safeguarded as a result, and then sending comprising network operations management maintenance
Result (such as network connectivty test result or routing tracking and testing result etc.) response message.As described above, network is grasped
Make management service type can be continuity testing or route tracking and testing and for routing tracking and testing test result can
To be encapsulated in Type-Length-Value format.
In some embodiments, network operations management maintenance request message and response message further include at least one of：
Version number, life span, response modes, error code, promoter's handle, sequence number, sending time stamp, receiving time stamp.
Fig. 5 shows the example of network operations management maintenance request message and response message in accordance with an embodiment of the present disclosure
Form.As illustrated in FIG. 5, version number occupies 4 bits, indicates the version number of network operations management maintenance request message.
For example, version number can be 1 or other suitable value.If network operations management maintenance request message has multiple versions, often
A network operations management maintenance request message version can have respective version number.
Type of message occupies 4 bits, indicates the type of message of network operations management maintenance request message.In a reality
It applies in example, type of message can be one below：VPLS multicasts respond request message or VPLS multicasts respond response message.
Life span (time to live) is abbreviated as TTL, occupies a byte, and instruction OAM request messages allow
The maximum quantity of the VPLS PE nodes passed through.After OAM request messages pass through a VPLS PE node, ttl value is subtracted 1.
If ttl value is dropped or stops forwarding equal to 0, OAM request messages.Ttl value can be used for the biography for controlling OAM request messages
Broadcast scope.According to different demands, ttl value can be arranged to an integer value in 1-255 scopes by such as network manager.
Response modes occupy 1 byte, and how instruction VPLS responsive nodes send response message.In one embodiment
In, the value of response modes can be configured to 1, and instruction sends response message by IPv4UDP groupings.In other embodiments
In, the value of response modes can be correspondingly set and define the meaning representated by the value according to different requirements.
Error code occupies a byte, and the VPLS PE nodes for being used for downstream are detecting the mistake of OAM request messages
When, indicate error code to the VPLS PE nodes for initiating OAM request messages.In one embodiment, it is fixed in following table to use
The error code of justice：
In other embodiments, for example, according to different demands correspondingly can be augmented or defined different wrong generations
Code.
Promoter's handle (handle) occupies 4 bytes, is filled by the node for sending OAM request messages, and
It is intactly returned by responsive node in OAM response messages.This field can be used by sending the node of OAM request messages
Value comes matching request message and response message.
Sequence number occupies 4 bytes, is set by the node for sending OAM request messages, and in OAM response messages
It is intactly returned by responsive node.The node for sending OAM request messages can be lost using the value of this field to detect
Response message.
Sending time stamp occupy 8 bytes, indicate time-of-day clock, when sending OAM response messages, by responsive node according to
Itself time-of-day clock (such as with NTP forms) fills this field.
Receiving time stamp occupy 8 bytes, indicate time-of-day clock, when receiving OAM request messages, by responsive node according to
Itself time-of-day clock (such as with NTP forms) fills this field.
Type-length-value (TLV) can be used for being loaded with any information.For example, type can define the type of TLV.Length
It can indicate the length (such as in units of byte) in value field, value field depends on the type of TLV.In addition, TLV can be by
It is nested in other TLV, in this case, the TLV being nested can be referred to as sub- TLV.Sub- TLV can have independent class
Type.
In one embodiment, operator's multicast tree mark, VPLS marks, responsive node information and routing tracking information can
To be encapsulated in respective Type-Length-Value format (TLV).
Fig. 3 shows the format sample of TLV in accordance with an embodiment of the present disclosure.It can include with reference to Fig. 3, TLV：2 bytes
Type field, the length field of 2 bytes and the value field of variable-length.Type can specify the type of TLV.For example, TLV
Type can include：Operator's multicast tree mark, VPLS marks, responsive node information, routing tracking information etc..In addition, TLV
Value can also include sub- TLV.In other embodiments, TLV can have the form different from the form shown in Fig. 3.
For example, the value of multicast tree mark TLV is a sub- TLV.As an example, the sub- TLV the following table shows 2 types：
The coded format of the sub- TLV of Class1 and " the RSVP P2MP IPv4 sessions " defined in IETF RFC 6425
The form of sub- TLV is identical.The coded format of the sub- TLV of type 2 is shown in Fig. 4.It, can be in addition, in other embodiments
There are other kinds of sub- TLV for encoding operator's multicast tree mark.
The value of VPLS identifiers TLV is a sub- TLV.The following table shows the sub- TLV of 4 types：
In addition, in other embodiments, there may also be other kinds of sub- TLV for encoding VPLS identifiers.
The value of responsive node information TLV is a sub- TLV.The following table shows the sub- TLV of 2 types：
In addition, in other embodiments, there may also be the other types of sub- TLV for responsive node information TLV.Example
Such as, the sub- TLV for IPv6 addresses can be defined, for sub- TLV of multiple IP address or IP address list etc..
Network operations management safeguards that type can be divided into the continuity testing in VPLS multicast packets path or routing tracking and testing,
The two is distinguished by whether including routing tracking information TLV in OAM request messages.If routing is not included in OAM request messages
Tracking information TLV, the OAM request messages are for continuity testing；If disappear comprising routing tracking information TLV, the OAM request
Breath is for routeing tracking and testing.
The value of routing tracking TLV is a sub- TLV.In one embodiment, the type of the sub- TLV can be 1, and length is
12 multiple is worth for IPv4 addresses and timestamp.Value field is the list of 12 byte projects, and each project includes 4 bytes
The timestamp sub-project of IPv4 address words project and 8 bytes.IPv4 addresses sub-project preserves passed through VPLS PE nodes
IPv4 addresses, timestamp sub-project preserve by the VPLS PE nodes when local time-of-day clock (such as with NTP (network time assist
View) form).In addition it is also possible to define the corresponding sub- TLV for IPv6 addresses.
Fig. 6 shows the flow chart of network operations management maintaining method 600 in accordance with an embodiment of the present disclosure.It can be all
As the downstream VPLS PE nodes of the multicast tree 100 of Fig. 1 equipment at perform method 600.Therefore, downstream VPLS PE nodes can
The component of various pieces of method 600 and the component of other functions are used to implement to provide.In addition, network operations management is safeguarded
Method 600 is with being the method to cooperate with reference to the described network operations management maintaining methods 200 of Fig. 1-5, for foregoing
The part being had been described above in embodiment, for reasons of clarity, appropriate herein the descriptions thereof are omitted.
As shown in fig. 6, method 600 is since frame 601.In frame 601, in the operation of carrying VPLS flux of multicast
At the downstream VPLS PE nodes that business's multicast tree (P2MP MPLS LSP) is passed through, receiving please comprising operation management maintainance (OAM)
The OAM data bag of message is sought, wherein the OAM request messages include：Operator's multicast tree mark, VPLS marks, responsive node
Information and optional routing tracking information.Disappear for example, VPLS PE nodes C and D can receive OAM requests from VPLS PE nodes A
Breath, VPLS PE nodes E can receive OAM request messages from VPLS PE nodes C.
In one embodiment, as described above, operator's multicast tree includes：Inclusive operator multicast tree or selectivity fortune
Seek business's multicast tree.
In frame 603, downstream VPLS PE nodes can identify OAM request messages.For example, if OAM request messages are packaged
In udp protocol, downstream VPLS PE nodes can identify OAM request messages by UDP port number.
In one embodiment, as described above, OAM request messages are encapsulated in the UDP message with predetermined UDP port number
Payload in.In this case, downstream VPLS PE nodes can extract UDP port number from the data packet of reception；With
And OAM request messages are identified based on UDP port number.
In frame 605, downstream VPLS PE nodes are based on operator's multicast tree mark, VPLS marks and responsive node information, hold
The following action of row：For being not belonging to the downstream VPLS PE nodes of VPLS examples to be measured, the OAM request messages received are forwarded as former state；
For belonging to the downstream VPLS PE nodes of VPLS examples to be measured, the OAM message received is first updated, is then forwarded again updated
OAM request messages；If belong to the downstream VPLS PE nodes of VPLS examples to be measured just and be in response to node, then except just
Beyond normal update and forwarding, OAM response messages also are returned to the VPLS PE nodes for sending OAM request messages, wherein response disappears
Breath includes：Operator's multicast tree mark, VPLS identify and optionally route tracking information.
For example, downstream VPLS PE nodes can be extracted from OAM request messages VPLS mark, and with downstream VPLS PE
One or more VPLS marks of node are compared.If they are identical, it is real that downstream VPLS PE nodes belong to VPLS to be measured
The downstream VPLS PE nodes of example, it first updates the OAM message received, then forwards updated OAM request messages again.For example,
Life span of OAM request messages etc. can be updated.If belong to the downstream VPLS PE nodes of VPLS examples to be measured just and be
Responsive node (for example, the information of downstream VPLS PE nodes is included in the responsive node information of the OAM message received), then
In addition to normally updating and forwarding, also OAM response messages are returned to the VPLS PE nodes for sending OAM request messages.It returns
OAM response messages can depend on OAM request messages type.For example, OAM request messages are VPLS multicast packets path
Continuity testing or routing tracking and testing, then OAM response messages can include VPLS multicast packets path continuity testing or
It route the test result of tracking and testing.
If downstream VPLS PE nodes are not belonging to the VPLS PE nodes of VPLS examples to be measured, it forwards what is received as former state
OAM request messages.
In one embodiment, downstream VPLS PE nodes are before OAM response messages are sent, and can be delayed random time
Interval causes the VPLS PE nodes for initiating OAM request messages so as to the OAM response messages for avoiding many almost while transmitting
Overload.Random time is generated by any suitable random time generating algorithm.
In one embodiment, OAM request messages include life span, when update OAM request messages include reducing existence
Between.For example, OAM request messages can include the life span TTL for being arranged to integer, update OAM request messages can be by TTL
Subtract 1.For example, as described above, life span TTL can be between 0-255 any integer, can when updating OAM request messages
To subtract 1 by ttl value.
In one embodiment, as described above, OAM response messages can be encapsulated in the UDP with predetermined UDP port number
In the payload of message.
In one embodiment, as described above, for encapsulating the purpose IP address of the UDP message of OAM request messages as net
Network address is the arbitrary IP address of 127.0.0.0/8, and source IP address is with initiating the IP of the VPLS PE nodes of OAM request messages
Location；For encapsulating VPLS PE node of the purpose IP address of the UDP message of the OAM response messages for initiation OAM request messages
IP address.
In one embodiment, as described above, OAM request messages and OAM response messages further include at least one of：Version
This number, OAM message type, life span, response modes, error code, promoter's handle, sequence number, sending time stamp, receive
Timestamp.
In one embodiment, as described above, operator multicast tree mark, VPLS marks, responsive node information and optional
Routing tracking information be encapsulated in respective Type-Length-Value format.
In one embodiment, as described above, OAM response messages include result or the wrong generation that network operations management is safeguarded
Code.
In one embodiment, as described above, network operations management safeguards the connective survey for VPLS multicast packets path
Examination route tracking and testing and is encapsulated in for the test result for routeing tracking and testing in Type-Length-Value format.
Based on the inventive concept identical with the above method 200, embodiment of the disclosure additionally provides a kind of network operation pipe
Manage maintenance device.The component for the step of device can include performing method 200 with reference to Fig. 2 descriptions.For with it is foregoing
The identical part of embodiment, suitably omits their description.
Fig. 7 shows the block diagram of network operations management maintenance device 700 in accordance with an embodiment of the present disclosure.Network operation pipe
The step of reason maintenance device 700 can be used for performing method 200 with reference to Fig. 2 descriptions.Network operations management maintenance device 700 can
To be located in Fig. 1 at VPLS PE nodes A.
In one embodiment, network operations management maintenance device 700 includes：Transmitting element 702 is used for through root position
In the VPLS PE nodes and operator's multicast tree (P2MP MPLS LSP) of VPLS flux of multicast is carried, is sent comprising VPLS groups
Broadcast the OAM data bag of operation management maintainance (OAM) request message；And receiving unit 704, it is used to receive for the OAM
The response message of request message, wherein the OAM request messages include：Operator's multicast tree mark, VPLS marks, responsive node
Information and optional routing tracking information, the OAM response messages include：Operator's multicast tree identifies, VPLS is identified and optional
Routing tracking information.
In one embodiment, operator's multicast tree includes：Inclusive operator multicast tree and selective operator
Multicast tree.
In one embodiment, the OAM request messages and the OAM response messages are respectively encapsulated with predetermined
In the payload of the UDP message of UDP port number.
In one embodiment, it is network address for encapsulating the purpose IP address of the UDP message of the OAM request messages
For the arbitrary IP address of 127.0.0.0/8, source IP address is the IP address of the VPLS PE nodes；It is rung for encapsulating the OAM
Answer IP address of the purpose IP address of the UDP message of message for described VPLS PE node.
In one embodiment, the OAM request messages and the OAM response messages further include at least one of：Version
This number, OAM message type, life span, response modes, error code, promoter's handle, sequence number, sending time stamp, receive
Timestamp.
In one embodiment, operator's multicast tree mark, VPLS marks, the responsive node information and can
The routing tracking information of choosing is encapsulated in respective Type-Length-Value format.
In one embodiment, the OAM response messages include the result or error code that network operations management is safeguarded.
In one embodiment, the network operations management safeguards the continuity testing for VPLS multicast packets path or road
It is encapsulated in by tracking and testing and for the test result of the routing tracking and testing in Type-Length-Value format.
Based on the inventive concept identical with the above method 600, embodiment of the disclosure additionally provides a kind of network operation pipe
Manage maintenance device.The component for the step of device can include performing method 600 with reference to Fig. 6 descriptions.For with it is foregoing
The identical part of embodiment, suitably omits their description.
Fig. 8 shows the block diagram of network operations management maintenance device 800 in accordance with an embodiment of the present disclosure.Network operation pipe
The step of reason maintenance device 800 can be used for performing method 600 with reference to Fig. 6 descriptions.Network operations management maintenance device 800 can
At the downstream VPLS PE passed through with the operator's multicast tree (P2MP MPLS LSP) for being located at carrying VPLS flux of multicast.
In one embodiment, network operations management maintenance device 800 includes：Receiving unit 802, receiving unit are used
The OAM data bag of network operations management maintenance request (OAM) message is included in reception, is asked wherein the network operations management is safeguarded
Message is asked to include：Operator multicast tree mark, VPLS marks, responsive node information and optionally it route tracking information；Identification is single
Member is used to identify the network operations management maintenance request message；And execution unit, it is used for based on operator's multicast tree
Mark, VPLS marks and responsive node information, perform following action：For being not belonging to the downstream VPLS of VPLS examples to be measured
PE nodes forward the OAM request messages received as former state；For belonging to the downstream VPLS PE nodes of VPLS examples to be measured, first update
Then the OAM message received forwards updated OAM request messages again, if belonging to the downstream VPLS PE of VPLS examples to be measured
Node is in response to node again just, then in addition to normally updating and forwarding, also to the VPLS for sending OAM request messages
PE nodes return to OAM response messages, wherein the response message includes：Operator's multicast tree identifies, VPLS is identified and optional
It route tracking information.
In one embodiment, operator's multicast tree includes：Inclusive operator multicast tree or selective operator
Multicast tree.
In one embodiment, the OAM request messages and the OAM response messages are respectively encapsulated with predetermined
In the payload of the UDP message of UDP port number.
In one embodiment, it is network address for encapsulating the purpose IP address of the UDP message of the OAM request messages
For the arbitrary IP address of 127.0.0.0/8, source IP address is the IP address for the VPLS PE nodes for initiating OAM request messages；For
Encapsulate VPLS PE node of the purpose IP address of the UDP message of the OAM response messages for the initiation OAM request messages
IP address.
In one embodiment, the recognition unit is additionally operable to：The UDP port number is extracted from the data packet of reception；
And OAM request messages are identified based on the UDP port number.
In one embodiment, the OAM request messages and the OAM response messages further include at least one of：Version
This number, OAM message type, life span, response modes, error code, promoter's handle, sequence number, sending time stamp, receive
Timestamp.
In one embodiment, operator's multicast tree mark, VPLS marks, the responsive node information and can
The routing tracking information of choosing is encapsulated in respective Type-Length-Value format.
In one embodiment, the OAM response messages include the result or error code that network operations management is safeguarded.
In one embodiment, the network operations management service mode is the continuity testing in VPLS multicast packets path
Or routing tracking and testing and the test result for the routing tracking and testing are encapsulated in Type-Length-Value format.
In one embodiment, described device further includes：Delay unit (not shown) is used to send the OAM sound
Before answering message, be delayed random time intervals.
In one embodiment, the OAM request messages include life span, and updating the OAM request messages includes subtracting
Few life span.
It is noted that any component in the component of arrangement described above may be implemented as hardware, software module or
It is combined.In the case of software module, they can be included on tangible computer-readable recordable storage medium.Institute
There is software module (or its any subset) can be on identical medium or each software module can be on different media.
Software module may operate on hardware processor.Using the different software modules operated on hardware processor come the side of execution
Method step.
In addition, an aspect of this disclosure can use the software run on all-purpose computer or work station.Such reality
Existing mode can use such as processor, memory and the input/output interface for example formed by display and keyboard.As herein
The middle word " processor " used is intended to comprising any processing equipment, such as processor include CPU (central processing unit) and/or its
The process circuit of its form.In addition, word " processor " can refer to more than one processor.Word " memory " be intended to include with
Processor or the associated memories of CPU, such as RAM (random access storage device), ROM (read-only memory), fixed memory
(for example, hard disk), movable memory equipment (for example, disk), flash memory etc..Processor, memory and input/output connect
Mouth (such as display and keyboard) can be for example via bus interconnection.
Therefore, computer software can (it includes for performing the instruction of method of disclosure as described herein and code)
To be stored in the associated memory devices of one or more of associated memory devices, and work as and be ready to be made
Used time is partly or wholly loaded (such as being loaded into RAM) and is performed by CPU.Such software can include but unlimited
In firmware, resident software, microcode, and the like.Computer software can be write using any programming language
Computer software and can be with the shape of source code, object code or the intermediate code between source code and object code
Formula, such as in the form of partial compilation or by it is any other it is desired in the form of.
The form of the computer program product included in computer-readable medium may be employed in embodiment of the disclosure, should
Computer-readable medium has the computer readable program code included on it.In addition it is possible to use any combination of calculating
Machine readable medium.Computer-readable medium can be computer-readable signal media or computer readable storage medium.Computer
Readable storage medium storing program for executing can be but not limited to electricity, magnetic, electromagnetism, light or other storage mediums and can be moveable medium
Or it is fixedly mounted in the medium in device and equipment.The non-limiting example of such computer-readable medium be RAM, ROM,
Hard disk, CD, optical fiber etc..Computer-readable medium may, for example, be tangible medium, for example, tangible storage medium.
Word used herein is only in order at the purpose of description specific embodiment, and not is intended to limit embodiment.
As it is used herein, singulative "one", " one kind " and " described " mean also comprising plural form, unless in context
It clearly dictates otherwise.It is to be further understood that when herein in use, word " comprising ", " having ", "comprising" and/or " contain
Have " refer to there are illustrated feature, number, step, operation, element and/or component, but do not preclude the presence or addition of one or
A number of other features, number, step, operation, element, component and/or its combination.
It should also be noted that in some alternative realization methods, illustrated function/action can not be pressed in attached drawing
Illustrated order occurs.If desired, it can in a different order and/or concurrently with each other perform described in the disclosure
Difference in functionality.In addition, if needing, one or more of above-mentioned function function can be necessary with right and wrong or can be combined.
Although describing embodiment of the disclosure above by reference to attached drawing, it will be appreciated by those skilled in the art that more than
Limitation merely illustrative rather than to the disclosure is described.Embodiment of the disclosure can be carry out various modifications and modification, and still
It falls within spirit and scope of the present disclosure, the scope of the present disclosure is only determined by the appended claims.
Claims (38)
1. a kind of network operations management maintaining method, including：At VPLS service edge nodes VPLSPE,
It is located at the VPLS PE nodes to root and carries the operator multicast tree P2MP MPLS LSP of the VPLS flux of multicast, sends
Include the OAM data bag of VPLS multicast operations management service (OAM) request message；And
The response message for the OAM request messages is received, wherein the OAM request messages include：Operator's multicast tree mark
Know, VPLS marks, responsive node information and optionally route tracking information, the response message includes：Operator's multicast tree mark
Know, VPLS identifies and optionally route tracking information.
2. according to the method described in claim 1, wherein described operator's multicast tree includes：Inclusive operator multicast tree or choosing
Ze Xing operators multicast tree.
3. according to the method described in claim 1, wherein described OAM request messages and the OAM response messages are respectively encapsulated
In the payload of the UDP message with predetermined UDP port number.
4. according to the method described in claim 3, wherein for encapsulating the destination IP of the UDP message of the OAM request messages
Location is the arbitrary IP address that network address is 127.0.0.0/8, and source IP address is the IP address of described VPLS PE node；With
In the IP address that the purpose IP address for the UDP message for encapsulating the OAM response messages is described VPLS PE node.
5. according to any methods of claim 1-4, wherein the OAM request messages and the OAM response messages also wrap
Include at least one of：Version number, OAM message type, life span, response modes, error code, promoter's handle, sequence
Number, sending time stamp, receiving time stamp.
6. according to any methods of claim 1-4, wherein operator's multicast tree mark, VPLS marks, institute
It states responsive node information and the routing tracking information is encapsulated in respective Type-Length-Value format.
7. according to any methods of claim 1-4, wherein the OAM response messages include what network operations management was safeguarded
Or error code as a result.
8. according to any methods of claim 1-4, wherein the network operations management is safeguarded as VPLS multicast packets road
The continuity testing in footpath or routing tracking and testing and test result for the routing tracking and testing be encapsulated in type-
In Length-Value format.
9. a kind of network operations management maintaining method, including：In the operator multicast tree P2MP MPLS of carrying VPLS flux of multicast
At the downstream VPLS PE nodes that LSP is passed through,
The OAM data bag for including operation management maintainance (OAM) request message is received, wherein the OAM request messages include：Operation
Business's multicast tree mark, VPLS marks and optionally route tracking information at responsive node information；
Identify the OAM request messages；And
Based on operator's multicast tree mark, VPLS marks and responsive node information, following action is performed：
For being not belonging to the downstream VPLS PE nodes of VPLS examples to be measured, the OAM request messages received are forwarded as former state；
For belonging to the downstream VPLS PE nodes of VPLS examples to be measured, the OAM message received is first updated, then forwards update again
OAM request messages afterwards, if belonging to the downstream VPLS PE nodes of VPLS examples to be measured just and being in response to node, then remove
Beyond normal update and forwarding, also OAM response messages, wherein institute are returned to the VPLS PE nodes for sending OAM request messages
Stating response message includes：Operator's multicast tree mark, VPLS identify and optionally route tracking information.
10. according to the method described in claim 9, wherein described multicast tree includes：Inclusive operator multicast tree or selectivity
Operator's multicast tree.
11. according to the method described in claim 9, wherein described OAM request messages and the OAM response messages are respectively encapsulated
In the payload of the UDP message with predetermined UDP port number.
12. according to the method for claim 11, wherein for encapsulating the destination IP of the UDP message of the OAM request messages
Address is the arbitrary IP address that network address is 127.0.0.0/8, and source IP address saves to initiate the VPLS PE of OAM request messages
The IP address of point；Disappear for encapsulating the purpose IP address of the UDP message of the OAM response messages for the initiation OAM requests
The IP address of the VPLS PE nodes of breath.
13. the method according to claim 11 or 12, wherein identifying that the OAM request messages include：From the data of reception
The UDP port number is extracted in bag；And OAM request messages are identified based on the UDP port number.
14. according to any methods of claim 9-12, wherein the OAM request messages and the OAM response messages are also
Including at least one of：Version number, OAM message type, life span, response modes, error code, promoter's handle, sequence
Row number, sending time stamp, receiving time stamp.
15. according to any methods of claim 9-12, wherein operator's multicast tree identifies, the VPLS is identified,
The responsive node information and optional routing tracking information are encapsulated in respective Type-Length-Value format.
16. according to any methods of claim 9-12, wherein the OAM response messages are safeguarded including network operations management
Result or error code.
17. according to any methods of claim 9-12, wherein the network operations management service mode is VPLS multicasts
The continuity testing of data path route tracking and testing and is encapsulated in for the test result for routeing tracking and testing
In Type-Length-Value format.
18. according to any methods of claim 9-12, further include：
Before the OAM response messages are sent, be delayed random time intervals.
19. according to any methods of claim 9-12, wherein the OAM request messages include life span, the side
Method further includes：Updating the OAM request messages includes reducing the life span.
20. a kind of network operations management maintenance device is located in VPLS service edge nodes (VPLSPE), including：
Transmitting element is used to be located at the VPLS PE nodes by root and carries operator's multicast tree of VPLS flux of multicast
P2MP MPLS LSP send the OAM data bag for including VPLS multicast operations management service (OAM) request message；And
Receiving unit is used to receive the response message for the OAM request messages,
Wherein described OAM request messages include：Operator's multicast tree mark, VPLS marks, responsive node information and optional road
By tracking information, the OAM response messages include：Operator's multicast tree mark, VPLS identify and optionally route tracking information.
21. device according to claim 20, wherein operator's multicast tree includes：Inclusive operator multicast tree and
Selective operator's multicast tree.
22. device according to claim 20, wherein the OAM request messages and the OAM response messages are sealed respectively
In the payload of the UDP message with predetermined UDP port number.
23. device according to claim 22, wherein for encapsulating the destination IP of the UDP message of the OAM request messages
Address is the arbitrary IP address that network address is 127.0.0.0/8, and source IP address is the IP address of the VPLS PE nodes；With
In the IP address that the purpose IP address for the UDP message for encapsulating the OAM response messages is described VPLS PE node.
24. according to any devices of claim 20-23, wherein the OAM request messages and the OAM response messages are also
Including at least one of：Version number, OAM message type, life span, response modes, error code, promoter's handle, sequence
Row number, sending time stamp, receiving time stamp.
25. according to any devices of claim 20-23, wherein operator's multicast tree identifies, the VPLS is identified,
The responsive node information and optional routing tracking information are encapsulated in respective Type-Length-Value format.
26. according to any devices of claim 20-23, wherein the OAM response messages are tieed up including network operations management
The result or error code of shield.
27. according to any devices of claim 20-23, wherein the network operations management is safeguarded as VPLS multicast packets
The continuity testing in path route tracking and testing and is encapsulated in class for the test result for routeing tracking and testing
In type-Length-Value format.
28. a kind of network operations management maintenance device is located at the operator multicast tree P2MP MPLS of carrying VPLS flux of multicast
At the downstream VPLS PE that LSP is passed through, including：
Receiving unit is used to receive the OAM data bag for including network operations management maintenance request (OAM) message, wherein described
Network operations management maintenance request message includes：Operator's multicast tree mark, VPLS marks, responsive node information and optional road
By tracking information；
Recognition unit is used to identify the network operations management maintenance request message；And execution unit, it is used for based on fortune
Business's multicast tree mark, VPLS marks and responsive node information are sought, performs following action：
For being not belonging to the downstream VPLS PE nodes of VPLS examples to be measured, the OAM request messages received are forwarded as former state；
For belonging to the downstream VPLS PE nodes of VPLS examples to be measured, the OAM message received is first updated, then forwards update again
OAM request messages afterwards, if belonging to the downstream VPLS PE nodes of VPLS examples to be measured just and being in response to node, then remove
Beyond normal update and forwarding, also OAM response messages, wherein institute are returned to the VPLS PE nodes for sending OAM request messages
Stating response message includes：Operator's multicast tree mark, VPLS identify and optionally route tracking information.
29. device according to claim 28, wherein operator's multicast tree includes：Inclusive operator multicast tree or
Selective operator's multicast tree.
30. device according to claim 28, wherein the OAM request messages and the OAM response messages are sealed respectively
In the payload of the UDP message with predetermined UDP port number.
31. device according to claim 30, wherein for encapsulating the destination IP of the UDP message of the OAM request messages
Address is the arbitrary IP address that network address is 127.0.0.0/8, and source IP address saves to initiate the VPLS PE of OAM request messages
The IP address of point；Disappear for encapsulating the purpose IP address of the UDP message of the OAM response messages for the initiation OAM requests
The IP address of the VPLS PE nodes of breath.
32. according to any device of claim 30 or 31, wherein the recognition unit is additionally operable to：From the data packet of reception
The middle extraction UDP port number；And the OAM request messages are identified based on the UDP port number.
33. according to any devices of claim 28-31, wherein the OAM request messages and the OAM response messages are also
Including at least one of：Version number, OAM message type, life span, response modes, error code, promoter's handle, sequence
Row number, sending time stamp, receiving time stamp.
34. according to any devices of claim 28-31, wherein operator's multicast tree identifies, the VPLS is identified,
The responsive node information and optional routing tracking information are encapsulated in respective Type-Length-Value format.
35. according to any devices of claim 28-31, wherein the OAM response messages are tieed up including network operations management
The result or error code of shield.
36. according to any devices of claim 28-31, wherein the network operations management service mode is VPLS multicasts
The continuity testing of data path route tracking and testing and is encapsulated in for the test result for routeing tracking and testing
In Type-Length-Value format.
37. according to any devices of claim 28-31, further include：Delay unit is used to send the OAM sound
Before answering message, be delayed random time intervals.
38. according to any devices of claim 28-31, wherein the OAM request messages include life span, institute is updated
Stating OAM request messages includes reducing the life span.
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| US20150029872A1 (en) * | 2013-07-24 | 2015-01-29 | Cisco Technology, Inc. | Path-ping and ecmp-traceroute for ipv6 overlay virtualized networks |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113196705A (en) * | 2019-06-27 | 2021-07-30 | 华为技术有限公司 | In-path telemetry of multicast traffic |
| US11716273B2 (en) | 2019-06-27 | 2023-08-01 | Huawei Technologies Co., Ltd. | On-path telemetry for multicast traffic |
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