CN108400911A - A kind of device and method for realizing Micro-BFD agreements - Google Patents
A kind of device and method for realizing Micro-BFD agreements Download PDFInfo
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- CN108400911A CN108400911A CN201810163959.5A CN201810163959A CN108400911A CN 108400911 A CN108400911 A CN 108400911A CN 201810163959 A CN201810163959 A CN 201810163959A CN 108400911 A CN108400911 A CN 108400911A
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- bfd
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- bfd messages
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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
- H04L43/50—Testing arrangements
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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
- H04L43/08—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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L2101/00—Indexing scheme associated with group H04L61/00
- H04L2101/60—Types of network addresses
- H04L2101/618—Details of network addresses
- H04L2101/622—Layer-2 addresses, e.g. medium access control [MAC] addresses
Abstract
Present invention is disclosed a kind of device and methods for realizing Micro BFD agreements, device includes message identification module, OAM engine modules, and message editing module, whether the message that message identification module receives for identification is whether Micro BFD messages and Micro BFD messages come from link aggregation group member interface；OAM engine modules form message editing information according to the state of Micro BFD state machines and are sent to message editing module, the addresses purpose Mac that the message editing module is divided according to two layers of head of message editing information editing Micro BFD messages.The present invention is used for quickly detecting by sending link state of the Micro BFD messages between member interface in link aggregation group, has the advantages that stability is high, fireballing.
Description
Technical field
The present invention relates to a kind of network communication technology fields, more particularly, to a kind of device for realizing Micro-BFD agreements
And method.
Background technology
Two-way converting detection is that the mechanism of fast detecting failure is used in network, mainly for detection of the company of network link
Understanding and considerate condition.
Link aggregation group is by the way that a plurality of Ethernet physical link is tied to an aggregated links, to realize increase chain
The purpose of road bandwidth.Ethernet interface is subjected to the binding that physical link can be realized in binding.It is formed after Ethernet interface binding
Aggregation group, aggregation group correspond to the aggregation interface of aggregated links, and each Ethernet interface is the member port of aggregation interface.Mesh
Before, there are many BFD technologies, including IP-BFD, MPLS-BFD, TP-BFD etc..These BFD technologies can by hardware or software or
The mode of the soft or hard combination of person is realized, but cannot be detected to link aggregation group member interface.
Invention content
It is an object of the invention to overcome the deficiencies of existing technologies, provide a kind of device that realizing Micro-BFD agreements and
Method is used for quickly detecting by sending link state of the Micro-BFD messages between member interface in link aggregation group.
To achieve the above object, the following technical solutions are proposed by the present invention：A kind of device for realizing Micro-BFD agreements, institute
It includes message identification module, OAM engine modules and message editing module to state device, and the message identification module is for identification
Whether the message received is whether Micro-BFD messages and Micro-BFD messages come from link aggregation group member interface,
And the Micro-BFD messages from link aggregation group member interface are sent to OAM engine modules；OAM engine modules are according to receipts
The Micro-BFD messages arrived change the state of Micro-BFD state machines, and are formed and reported according to the state of Micro-BFD state machines
Text editor's information is sent to message editing module；The message editing module is according to message editing information to Micro-BFD messages
Into edlin, and sends edited Micro-BFD messages and detected to link aggregation group member interface into Uplink State.
Preferably, the message identification module judges whether message is Micro-BFD reports according to UDP port number in message
Text.
Preferably, Your Discriminator fields and hair in the message identification module combination Micro-BFD messages
The source port information of the Micro-BFD messages is sent to identify whether Micro-BFD messages come from link aggregation group member interface.
Preferably, the source port information of the Micro-BFD messages can according to the source IP in the Micro-BFD messages
Location obtains.
Preferably, the message editing information includes：When Micro-BFD state machines are non-Up states, Micro-BFD reports
The addresses purpose Mac on two layers of head point are multicast address in text；When Micro-BFD state machines are Up states, Micro-BFD reports
The addresses purpose Mac on two layers of head point are the addresses next-hop Mac in text.
A method of it realizing Micro-BFD agreements, includes the following steps：
S1, message identification module judges whether the message received is Micro-BFD messages, if so, executing step S2；
S2, judges whether Micro-BFD messages come from link aggregation group member interface, if so, link aggregation will be come from
The Micro-BFD messages of group membership's interface are delivered to OAM engine modules；
S3, OAM engine modules change the state of Micro-BFD state machines according to the Micro-BFD messages that receive, and according to
The state of Micro-BFD state machines forms message editing information and is sent to message editing module；
S4, message editing module according to message editing information to Micro-BFD messages into edlin, and send edited
Micro-BFD messages are detected to link aggregation group member interface into Uplink State.
Preferably, the message identification module judges whether message is Micro-BFD reports according to UDP port number in message
Text.
Preferably, Your Discriminator fields and hair in the message identification module combination Micro-BFD messages
The source port information of the Micro-BFD messages is sent to identify whether Micro-BFD messages come from link aggregation group member interface.
Preferably, the source port information of the Micro-BFD messages can according to the source IP in the Micro-BFD messages
Location obtains.
Preferably, the message editing information includes：When Micro-BFD state machines are non-Up states, Micro-BFD reports
The addresses purpose Mac on two layers of head point are multicast address in text；When Micro-BFD state machines are Up states, Micro-BFD reports
The addresses purpose Mac on two layers of head point are the addresses next-hop Mac in text.
The beneficial effects of the invention are as follows：
Compared with prior art, a kind of device and method for realizing Micro-BFD messages of the present invention, passes through
The state of Micro-BFD state machines changes the addresses purpose Mac on two layers of head in Micro-BFD messages point, to realize
Link state between member interface in link aggregation group is used for quickly detecting, compared with software realization, high with stability,
Fireballing advantage.
Description of the drawings
Fig. 1 is the apparatus structure block diagram of the realization Micro-BFD agreements of the present invention；
Fig. 2 is that the local terminal switching equipment of the present invention sends Micro-BFD message flow charts；
Fig. 3 is the flow chart of the realization Micro-BFD agreements of the present invention.
Specific implementation mode
Below in conjunction with the attached drawing of the present invention, clear, complete description is carried out to the technical solution of the embodiment of the present invention.
A kind of disclosed device and method for realizing Micro-BFD agreements, can in link aggregation group at
Link state between member's interface is used for quickly detecting.
As shown in Figure 1, a kind of device for realizing Micro-BFD agreements, is mainly used in and enables link aggregation function
Local terminal switching equipment or remote switching, when it is implemented, device is embodied as most preferably with chip form, ASIC can be selected in chip
Chip, fpga chip or NP chips etc..Specifically, device includes that message identification module, OAM engine modules and message are compiled
Collect module.Wherein, whether the message that message identification module receives for identification is Micro-BFD messages and Micro-BFD
Whether message comes from link aggregation group member interface, and the Micro-BFD messages from link aggregation group member interface are sent
To OAM engine modules；OAM engine modules change the state of Micro-BFD state machines according to the Micro-BFD messages received, and
Message editing information, which is formed, according to the state of Micro-BFD state machines is sent to message editing module；Message editing module according to
Message editing information editing Micro-BFD messages are simultaneously sent to link aggregation group member interface into Uplink State detection.
Further, message identification module passes through the UDP port number in message when the message received is identified
To judge whether message is Micro-BFD messages.When UDP port number is 6784, expression message is Micro-BFD messages.Together
Sample, device is when encapsulating Micro-BFD messages, the UDP port number for also the use of number being 6784.It is received for determination
Whether Micro-BFD messages need to be sent to the processing of OAM engine modules, in message identification module combination Micro-BFD messages
Your Discriminator fields and the source port information for sending the Micro-BFD messages are judged.Wherein, Your
Discriminator fields indicate the distal marker symbol of BFD session connections；The source port of message can be reported according to Micro-BFD
Source IP address in text obtains.Port as source IP address is bound is the ports Eth0, after obtaining source IP address in message, into one
Step can get the corresponding source port of the source IP address.
OAM engine modules change Micro-BFD state machines according to the value of state field in the Micro-BFD messages received
State.Wherein, state field is for identifying the locals BFD state.When being detected into Uplink State, local terminal switching equipment and
Remote switching establishes BFD sessions according to the quantity of link, if any 3 links, then establish 3 BFD sessions for detect 3
The state of link.In conversation procedure, by three-way handshake Mechanism establishing session, and session is kept to carry out chain for UP states
Line state detects.If not receiving Micro-BFD messages in a period of time, that is, UP states are cannot keep, then there is link failure.
The present invention is the link detecting being applied between link aggregation group member interface, in the shape of Micro-BFD state machines
When state is Down, AdminDown and Init, the addresses Mac of two layers of head subhead are multicast address in Micro-BFD messages
01-00-5E-90-00-01；When Micro-BFD state machines are Up, the Mac of two layers of head subhead in Micro-BFD messages
Location is the addresses actual next-hop Mac, and the addresses next-hop Mac are the addresses Mac of the opposite ends Micro-BFD, can be the Mac of port
Address can also be the addresses Mac of router.When it is implemented, state of the OAM engine modules according to Micro-BFD state machines
Message editing information is formed, and is sent into message editing module.Message editing module compiles message according to message editing information
Volume.I.e. when the state of Micro-BFD state machines is non-UP, message editing module will be in two layers of head of message in message editing
The addresses purpose Mac are set as multicast address 01-00-5E-90-00-01.When the state of state machine is UP, message editing module
It sets the addresses purpose Mac in two layers of head of message to the addresses actual next-hop Mac in message editing, and message is sent
It goes out.
In the present embodiment, by taking local terminal switching equipment as an example, it is described in detail how local terminal switching equipment carries out Micro-BFD reports
The encapsulation and transmission of text.
As shown in Fig. 2, local terminal switching equipment includes OAM engine modules and message editing module, further include message identification
Module (not shown).OAM engine modules are first by the relevant information (destination address that such as upper-layer protocol is obtained by hello mechanism
Deng) it is packaged into IP packet, IP packet can just send the detection into Uplink State after message editing module editor.
Which kind of two layers of head is message editing module add according to the decision of message editing information before IP packet.Message editing information and OAM
The state of Micro-BFD state machines in engine modules is related.When Micro-BFD state machines state be Down,
When AdminDown and Init, the addresses purpose Mac in two layers of head are multicast address 01-00-5E-90-00-01, when
When the state of Micro-BFD state machines is Up, the addresses purpose Mac in two layers of head are the addresses actual next-hop Mac.
As shown in figure 3, a kind of method for realizing Micro-BFD agreements, includes the following steps：
S1, message identification module judge whether the message that receives is Micro-BFD messages, if so, step S2 is executed, it is no
Then, it is not processed；
S2, judges whether Micro-BFD messages come from link aggregation group member interface, if so, link aggregation will be come from
The Micro-BFD messages of group membership's interface are delivered to OAM engine modules；
S3, OAM engine modules change the state of Micro-BFD state machines according to the Micro-BFD messages that receive, and according to
The state of Micro-BFD state machines forms message editing information and is sent to message editing module；
S4, message editing module according to message editing information to Micro-BFD messages into edlin, and send edited
Micro-BFD messages are detected to link aggregation group member interface into Uplink State.
Specifically, whether message editing module is Micro-BFD messages according to the UDP port number identification message in message,
Wherein, UDP port number 6784.When for Micro-BFD messages, message identification module further judges Micro-BFD messages
OAM engine modules whether are needed to handle.Your Discriminator words in message identification module combination Micro-BFD messages
Section and the source port information for sending the Micro-BFD messages are judged.Wherein, the source port of message can be according to Micro-
Source IP address in BFD messages obtains.
Further, when the present invention carries out message editing by message editing module, according to the shape of Micro-BFD state machines
State determines which kind of address the addresses purpose Mac are in two layers of head.Micro-BFD state machines state be Down, AdminDown,
And when Init, the addresses Mac of two layers of head subhead are multicast address 01-00-5E-90-00-01 in Micro-BFD messages；
The addresses Mac of two layers of head subhead are for actual next-hop Mac when Micro-BFD state machines are Up, in Micro-BFD messages
Location, the addresses next-hop Mac are the addresses Mac of the opposite ends Micro-BFD, can be the Mac of port, can also be the Mac of router.
When it is implemented, OAM engine modules form message editing information according to the state of Micro-BFD state machines, and it is sent into message volume
Collect module.Message editing module is according to message editing information to message into edlin.I.e. when the state of Micro-BFD state machines is
When non-UP, message editing module sets the addresses purpose Mac in two layers of head of message to multicast address 01- in message editing
00-5E-90-00-01.When the state of state machine is UP, message editing module will be in two layers of head of message in message editing
The addresses purpose Mac are set as the addresses actual next-hop Mac, and message is sent.
A kind of device and method for realizing Micro-BFD messages of the present invention is mainly realized by the form of hardware
Link state between member interface in link aggregation group is used for quickly detecting, compared with software realization, high with stability,
Fireballing advantage.
The technology contents and technical characteristic of the present invention have revealed that as above, however those skilled in the art still may base
Make various replacements and modification without departing substantially from spirit of that invention, therefore, the scope of the present invention in teachings of the present invention and announcement
It should be not limited to the revealed content of embodiment, and should include various replacements and modification without departing substantially from the present invention, and be this patent Shen
Please claim covered.
Claims (10)
1. a kind of device for realizing Micro-BFD agreements, which is characterized in that described device includes message identification module, OAM engines
Whether module and message editing module, the message that the message identification module receives for identification are Micro-BFD reports
Whether text and Micro-BFD messages come from link aggregation group member interface, and will be from link aggregation group member interface
Micro-BFD messages are sent to OAM engine modules；OAM engine modules change Micro- according to the Micro-BFD messages received
The state of BFD state machines, and message editing information is formed according to the state of Micro-BFD state machines and is sent to message editing mould
Block；The message editing module according to message editing information to Micro-BFD messages into edlin, and send edited
Micro-BFD messages are detected to link aggregation group member interface into Uplink State.
2. the apparatus according to claim 1, which is characterized in that the message identification module is according to UDP port number in message
Judge whether message is Micro-BFD messages.
3. the apparatus according to claim 1, which is characterized in that in the message identification module combination Micro-BFD messages
Your Discriminator fields and the source port information identification Micro-BFD messages for sending the Micro-BFD messages are
It is no to come from link aggregation group member interface.
4. device according to claim 3, which is characterized in that the source port information of the Micro-BFD messages can basis
Source IP address in the Micro-BFD messages obtains.
5. the apparatus according to claim 1, which is characterized in that the message editing information includes：In Micro-BFD states
When machine is non-Up states, the addresses purpose Mac on two layers of head point are multicast address in Micro-BFD messages；In Micro-BFD shapes
When state machine is Up states, the addresses purpose Mac on two layers of head point are the addresses next-hop Mac in Micro-BFD messages.
6. a kind of method for realizing Micro-BFD agreements based on device described in claim 1, which is characterized in that including as follows
Step：
S1, message identification module judges whether the message received is Micro-BFD messages, if so, executing step S2；
S2, judge Micro-BFD messages whether come from link aggregation group member interface, if so, will come from link aggregation group at
The Micro-BFD messages of member's interface are delivered to OAM engine modules；
S3, OAM engine modules change the state of Micro-BFD state machines according to the Micro-BFD messages that receive, and according to
The state of Micro-BFD state machines forms message editing information and is sent to message editing module；
S4, message editing module according to message editing information to Micro-BFD messages into edlin, and send edited
Micro-BFD messages are detected to link aggregation group member interface into Uplink State.
7. according to the method described in claim 6, it is characterized in that, the message identification module is according to UDP port number in message
Judge whether message is Micro-BFD messages.
8. according to the method described in claim 6, it is characterized in that, in the message identification module combination Micro-BFD messages
Your Discriminator fields and the source port information identification Micro-BFD messages for sending the Micro-BFD messages are
It is no to come from link aggregation group member interface.
9. according to the method described in claim 8, it is characterized in that, the source port information of the Micro-BFD messages can basis
Source IP address in the Micro-BFD messages obtains.
10. according to the method described in claim 6, it is characterized in that, the message editing information includes：In Micro-BFD shapes
When state machine is non-Up states, the addresses purpose Mac on two layers of head point are multicast address in Micro-BFD messages；In Micro-BFD
When state machine is Up states, the addresses purpose Mac on two layers of head point are the addresses next-hop Mac in Micro-BFD messages.
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| CN201810163959.5A CN108400911B (en) | 2018-02-27 | 2018-02-27 | Device and method for realizing Micro-BFD protocol |
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| CN110752992A (en) * | 2019-10-28 | 2020-02-04 | 盛科网络（苏州）有限公司 | Device and method for realizing point-to-multipoint by MPLS SBFD reflection end |
| CN110752992B (en) * | 2019-10-28 | 2021-11-26 | 苏州盛科通信股份有限公司 | Device and method for realizing point-to-multipoint by MPLS SBFD reflection end |
| CN112804116A (en) * | 2020-06-30 | 2021-05-14 | 中兴通讯股份有限公司 | Link detection method, electronic device and computer readable medium |
| CN112804116B (en) * | 2020-06-30 | 2023-02-17 | 中兴通讯股份有限公司 | Link detection method, electronic device and computer readable medium |
| CN115065626A (en) * | 2022-05-07 | 2022-09-16 | 苏州盛科通信股份有限公司 | Source port checking method and device in Micro-BFD, electronic equipment and storage medium |
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