CN104270280B - LSP ping and tracert system and method is realized on the router - Google Patents
LSP ping and tracert system and method is realized on the router Download PDFInfo
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Abstract
The invention discloses a kind of system and method for realizing LSP ping and tracert on the router, it is related to network communication field, the system includes control plane and Forwarding plane, control plane includes LSP ping and tracert application module, IP protocol stack and control plane signaling driving, Forwarding plane includes Forwarding plane signaling and drives and forward microcode, and IP protocol stack provides unified transmitting-receiving packet interface for LSP ping and tracert application modules；Control plane signaling driving is controlled the MAC IN MAC processing in plane；The driving of Forwarding plane signaling carries out the MAC IN MAC processing on Forwarding plane.LSP ping and tracert messages are submitted to Forwarding plane by the present invention, are completed corresponding routing by Forwarding plane, are realized LSP ping and tracert accuracy, real-time, while can obtain bigger lifting in performance, reduce the burden of control plane.
Description
Technical field
The present invention relates to network communication field, it is specifically related to one kind and realizes LSP (Label on the router
Switching Path, label switched path) ping (end-to-end connection) and tracert (tracking route) system and method.
Background technology
In MPLS (Multi-Protocol Label Switching, multiprotocol label switching) application, for LSP
Validity, the detection of accessibility, currently without highly effective method.MPLS systems mainly include control plane and forwarding is flat
Face, control plane is responsible for MPLS forward-paths (LSP) foundation, but cannot detect that LSP transmits this mistake of data failure.And turn
The situation that plane has no idea to know upstream and downstream and whole piece LSP by being then based on isolated node, also is sent out, accordingly, it would be desirable to one
User is allowed to detect the instrument of this problem within reasonable time, then LSP ping and tracert arise at the historic moment.LSP
Ping and tracert passes through echo (echo) message based on UDP (User Data Protocol, UDP)
(including request and response), to detect LSP connectedness and LSP whole piece path.
Because the networking of carrier class is typically with protection scene, in this scene, is realized by Forwarding plane and detect tunnel
Activestandby state and realizing is switched, and current tunnel active and standby information in real time, only Forwarding plane is perceived, and control plane is not felt immediately
Know current active and standby information, when causing control plane transmission LSP ping detection messages, in this case it is not apparent that this sends toward which bar LSP,
This is that LSP ping and tracert function realize another difficult point run into.
In addition, when realizing MPLS functions on the router, MPLS forwarding capability is only achieved above in Forwarding plane, control
Plane is without the soft forwarding capabilitys of MPLS, even if supporting soft forwarding capability, is there is active and standby (LSP 1:1) under the scene of protection, forwarding is flat
Face hardware can check activestandby state change in real time, but chain of command perceives master state change and has very delay greatly, in delay
Period in chain of command and the activestandby state of forwarding surface the problem of have inconsistent.
The content of the invention
The invention aims to overcome the shortcomings of above-mentioned background technology there is provided one kind realize LSP on the router
Ping and tracert system and method, Forwarding plane is submitted to by LSP ping and tracert messages, complete by Forwarding plane
Into corresponding routing, LSP ping and tracert accuracy, real-time is realized, while bigger lifting can be obtained in performance,
Reduce the burden of control plane.
The present invention provides a kind of system for realizing LSP ping and tracert on the router, including control plane and turns
Plane is sent out, the control plane includes LSP ping and tracert application module, IP protocol stack and control plane signaling driving,
Forwarding plane includes Forwarding plane signaling and drives and forward microcode, wherein：
The LSP ping and tracert application modules are used for：Protocol level is carried out to LSP ping and tracert bag
Processing；
The IP protocol stack is used for：Unified transmitting-receiving packet interface is provided for LSP ping and tracert application modules, is system
One send and receive packets platform, IP protocol stack automatically creates an operation management maintainance OAM interface, loads OAM interface drivers, and OAM connects
LSP ping and tracert messages are packaged into corresponding MAC-IN-MAC forms by mouth driving, and MAC-IN-MAC is a kind of encapsulation
Form, for transmitting the information that control plane and Forwarding plane are mutually paid close attention to；
The control plane signaling, which drives, to be used for：The MAC-IN-MAC processing in plane is controlled, in control plane hair
Deliver newspaper text when encapsulate MAC-IN-MAC heads, control plane receive message when peel off MAC-IN-MAC heads；
The Forwarding plane signaling, which drives, to be used for：Carry out the MAC-IN-MAC processing on Forwarding plane；
The forwarding microcode is used for：When router device is given out a contract for a project, believed according to the MAC-IN-MAC LSP that face is carried in front
Breath, searches LSP forward tables, and message is encapsulated into upper LSP label head, then encapsulates uplink layer head, finally corresponding from LSP forward tables
Physical interface or logic interfacing are sent；During as Provider Edge PE node packet receivings, the drive of Forwarding plane signaling is above sent to
It is dynamic, deliver to control plane after its unified encapsulation.
On the basis of above-mentioned technical proposal, the IP protocol stack sends LSP ping and tracert report using OAM interfaces
Text.
The present invention also provides the method for realizing LSP ping and tracert on the router based on said system, including
Following steps：
A, router device send LSP ping and tracert messages：
After step 101, control plane start, IP protocol stack automatically creates an OAM interface, loads OAM interface drivers,
LSP ping and tracert messages are packaged into corresponding MAC-IN-MAC forms by OAM interface drivers, and MAC-IN-MAC is a kind of
Encapsulation format, for transmitting the information that control plane and Forwarding plane are mutually paid close attention to；
Step 102, LSP ping and tracert application module create an original socket of link, are tied to OAM interfaces
On；
When step 103, LSP ping and tracert application module send LSP ping bags, by bag data part and correspondingly
LSP information be encapsulated in a block number according to the inside according to certain form, then sent by the original socket of link；
The resource that the original socket of step 104, link is provided as IP protocol stack should for including LSP ping and tracert
Used with the upper layer module including module, IP protocol stack judges whether the interface type of the original socket binding of link is that OAM connects
Mouthful, if the interface of the original socket binding of link is OAM interfaces, go to step 105；Otherwise step 106 is gone to；
When step 105, the processing of IP protocol stack hair are given out a contract for a project, if the interface of the original socket binding of link is OAM interfaces,
The OAM interface drivers loaded using IP protocol stack, the LSP that will be sent according to form during assembling, the original socket of parsing link
The information that ping and tracert messages are carried, then by Information encapsulation into the message with MAC-IN-MAC, is sent to forwarding flat
Face, goes to step 107；
If the interface of the original socket binding of step 106, link is not OAM interfaces, connect using other corresponding types
The driving encapsulation of mouth, goes to step 107；
What step 107, the driving of Forwarding plane signaling received that control plane is sent to Forwarding plane carries LSP to be detected
The MAC-IN-MAC messages of information, are dealt into forwarding microcode, go to step 108；
Step 108, forwarding microcode parsing MAC-IN-MAC forms, obtain LSP ping and tracert message and to be detected
LSP information, search LSP forward tables, upper MPLS label encapsulated according to LSP forward tables, then report LSP ping and tracert
Text is sent from correspondence outgoing interface；
B, router device receive LSP ping and tracert messages：
Step 201, Forwarding plane receive life span TTL=0 or 1 LSP ping and tracert messages；
After step 202, forwarding microcode identification LSP ping and tracert messages, by LSP ping and tracert messages
On give control plane, carried when above sending, inside the MAC-IN-MAC forms of LSP ping and tracert messages LSP ping and
The receiving port information of tracert messages；
Step 203, control plane signaling driving are received after the message with MAC-IN-MAC, according to the message received
MAC-IN-MAC header parsings go out packet receiving interface, then by MAC-IN-MAC peel off after on be sent to corresponding in IP protocol stack connect
Mouthful；
Step 204, LSP ping and tracert application module create the original socket of link, the original socket of the link
Unbound OAM interfaces, receive LSP ping and tracert messages, afterwards by the original socket of the link from IP protocol stack
The protocol processes of LSP ping and tracert application modules are carried out again.
On the basis of above-mentioned technical proposal, step 108 is further comprising the steps of：If LSP to be detected is that have active and standby
Scene, Forwarding plane send LSP ping and tracert messages when, selection sent from primary lsp tunnel.
Compared with prior art, advantages of the present invention is as follows：
(1) compared with control plane does not manage the scene of the real-time activestandby states of LSP in existing router device, the present invention
LSP ping and tracert messages are submitted to Forwarding plane, corresponding routing, the LSP of control plane are completed by Forwarding plane
Ping and tracert application modules and Forwarding plane coordinate the encapsulation and transmission for completing LSP ping and tracert messages, realize
LSP ping and tracert accuracy.
(2) control plane in the scene of the real-time activestandby states of LSP is managed with the control plane of existing router device to obtain
Forwarding plane LSP states are taken to compare not in time, OAM message is submitted to Forwarding plane, the MPLS label phase of OAM message by the present invention
Close processing to realize on Forwarding plane, LSP ping and the tracert application module and Forwarding plane of control plane, which coordinate, to be completed
The encapsulation and transmission of LSP ping and tracert messages, ensure that LSP ping and tracert real-time, while performance
It is upper to obtain bigger lifting, reduce the burden of control plane.
Brief description of the drawings
Fig. 1 is the structured flowchart for the system for realizing LSP ping and tracert in the embodiment of the present invention on the router.
Fig. 2 is the flow chart of router device transmission LSP messages in the embodiment of the present invention.
Fig. 3 is the flow chart of router device reception LSP messages in the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawings and specific embodiment the present invention is described in further detail.
It is shown in Figure 1, the embodiment of the present invention provide it is a kind of realize LSP ping and tracert on the router be
System, including control plane and Forwarding plane, control plane include LSP ping and tracert application module, IP protocol stack and control
Plane signaling driving processed, Forwarding plane includes Forwarding plane signaling and drives and forward microcode, wherein：
LSP ping and tracert application modules are used for：The place of protocol level is carried out to LSP ping and tracert bag
Reason；
IP protocol stack is used for：Unified transmitting-receiving packet interface is provided for LSP ping and tracert application modules, is unified
Send and receive packets platform, IP protocol stack automatically creates OAM (Operation, Administration, a Management, operation pipe
Reason is safeguarded) interface, OAM interface drivers are loaded, LSP ping and tracert messages are packaged into corresponding by OAM interface drivers
MAC-IN-MAC forms, MAC-IN-MAC is a kind of encapsulation format, for transmitting control plane and Forwarding plane mutually pays close attention to
Information；IP protocol stack sends LSP ping and tracert messages using the OAM interfaces；
Control plane signaling, which drives, to be used for：The MAC-IN-MAC processing in plane is controlled, sends and reports in control plane
MAC-IN-MAC heads are encapsulated when literary, control plane peels off MAC-IN-MAC heads when receiving message；
Forwarding plane signaling, which drives, to be used for：Carry out the MAC-IN-MAC processing on Forwarding plane；
Forwarding microcode is used for：When router device is given out a contract for a project, according to the MAC-IN-MAC LSP information that face is carried in front, look into
LSP forward tables are looked for, message is encapsulated into upper LSP label head, then encapsulate uplink layer head, finally from the corresponding physics of LSP forward tables
Interface or logic interfacing are sent；During as PE (Provider Edge, Provider Edge) node packet receiving, above it is sent to and turns
The driving of plane signaling is sent out, control plane is delivered to after its unified encapsulation.
The embodiment of the present invention provides a kind of side for realizing LSPping and tracert on the router based on said system
Method, comprises the following steps：
A, shown in Figure 2, router device transmission LSP ping and tracert messages：
After step 101, control plane start, IP protocol stack automatically creates an OAM interface, loads OAM interface drivers,
LSP ping and tracert messages are packaged into corresponding MAC-IN-MAC forms by OAM interface drivers, and MAC-IN-MAC is a kind of
Encapsulation format, for transmitting the information that control plane and Forwarding plane are mutually paid close attention to；
Step 102, LSP ping and tracert application module create an original socket of link, are tied to OAM interfaces
On；
When step 103, LSP ping and tracert application module send LSP ping bags, by bag data part and correspondingly
LSP information be encapsulated in a block number according to the inside according to certain form, then sent by the original socket of link；
The resource that the original socket of step 104, link is provided as IP protocol stack should for including LSP ping and tracert
Used with the upper layer module including module, IP protocol stack judges whether the interface type of the original socket binding of link is that OAM connects
Mouthful, if the interface of the original socket binding of link is OAM interfaces, go to step 105；Otherwise step 106 is gone to；
When step 105, the processing of IP protocol stack hair are given out a contract for a project, if the interface of the original socket binding of link is OAM interfaces,
The OAM interface drivers loaded using IP protocol stack, the LSP that will be sent according to form during assembling, the original socket of parsing link
The information that ping and tracert messages are carried, then by Information encapsulation into the message with MAC-IN-MAC, is sent to forwarding flat
Face, goes to step 107；
If the interface of the original socket binding of step 106, link is not OAM interfaces, connect using other corresponding types
The driving encapsulation of mouth, goes to step 107；
What step 107, the driving of Forwarding plane signaling received that control plane is sent to Forwarding plane carries LSP to be detected
The MAC-IN-MAC messages of information, are dealt into forwarding microcode, go to step 108；
Step 108, forwarding microcode parsing MAC-IN-MAC forms, obtain LSP ping and tracert message and to be detected
LSP information, search LSP forward tables, upper MPLS label encapsulated according to LSP forward tables, then report LSP ping and tracert
Text is sent from correspondence outgoing interface；If LSP to be detected is that have active and standby (such as LSP1:1) scene, Forwarding plane is being sent
During LSP ping and tracert messages, selection is sent from primary lsp tunnel.
B, shown in Figure 3, router device reception LSP ping and tracert messages：
Step 201, Forwarding plane receive TTL (Time To Live, life span)=0 or 1 LSP ping and
Tracert messages；
After step 202, forwarding microcode identification LSP ping and tracert messages, by LSP ping and tracert messages
On give control plane, carried when above sending, inside the MAC-IN-MAC forms of LSP ping and tracert messages LSP ping and
The receiving port information of tracert messages；
Step 203, control plane signaling driving are received after the message with MAC-IN-MAC, according to the message received
MAC-IN-MAC header parsings go out packet receiving interface, then by MAC-IN-MAC peel off after on be sent to corresponding in IP protocol stack connect
Mouthful；
Step 204, LSP ping and tracert application module create the original socket of link, the original socket of the link
Unbound OAM interfaces, receive LSP ping and tracert messages, afterwards by the original socket of the link from IP protocol stack
The protocol processes of LSP ping and tracert application modules are carried out again.
Those skilled in the art can carry out various modifications and variations to the embodiment of the present invention, if these modifications and change
Type is within the scope of the claims in the present invention and its equivalent technologies, then these modifications and variations are also in protection scope of the present invention
Within.
The prior art that the content not being described in detail in specification is known to the skilled person.
Claims (4)
1. a kind of system for realizing LSP ping and tracert on the router, including control plane and Forwarding plane, its feature
It is：The control plane includes label switching path LSP ping and tracert application module, IP protocol stack and control plane
Signaling drives, and Forwarding plane includes Forwarding plane signaling and drives and forward microcode, wherein：
The LSP ping and tracert application modules are used for：The place of protocol level is carried out to LSP ping and tracert bag
Reason；
The IP protocol stack is used for：Unified transmitting-receiving packet interface is provided for LSP ping and tracert application modules, is unified
Send and receive packets platform, IP protocol stack automatically creates an operation management maintainance OAM interface, loads OAM interface drivers, and OAM interfaces drive
Dynamic that LSP ping and tracert messages are packaged into corresponding MAC-IN-MAC forms, MAC-IN-MAC is a kind of encapsulation format,
For transmitting the information that control plane and Forwarding plane are mutually paid close attention to；
The control plane signaling, which drives, to be used for：The MAC-IN-MAC processing in plane is controlled, sends and reports in control plane
MAC-IN-MAC heads are encapsulated when literary, control plane peels off MAC-IN-MAC heads when receiving message；
The Forwarding plane signaling, which drives, to be used for：Carry out the MAC-IN-MAC processing on Forwarding plane；
The forwarding microcode is used for：When router is given out a contract for a project, according to the MAC-IN-MAC LSP information that face is carried in front, LSP is searched
Forward table, upper LSP label head is encapsulated by message, then encapsulates uplink layer head, finally from the corresponding physical interface of LSP forward tables or
Person's logic interfacing is sent；During as Provider Edge PE node packet receivings, the driving of Forwarding plane signaling is above sent to, it is unified by it
Control plane is delivered to after encapsulation.
2. the system as claimed in claim 1 for realizing LSP ping and tracert on the router, it is characterised in that：It is described
IP protocol stack sends LSP ping and tracert messages using OAM interfaces.
3. the method for realizing LSP ping and tracert on the router based on system described in claim 1 or 2, its feature
It is, comprises the following steps：
A, router send LSP ping and tracert messages：
After step 101, control plane start, IP protocol stack automatically creates an OAM interface, loads OAM interface drivers, OAM
LSP ping and tracert messages are packaged into corresponding MAC-IN-MAC forms by interface driver, and MAC-IN-MAC is a kind of envelope
Form is filled, for transmitting the information that control plane and Forwarding plane are mutually paid close attention to；
Step 102, LSP ping and tracert application module create an original socket of link, are tied on OAM interfaces；
When step 103, LSP ping and tracert application module send LSP ping bags, by bag data part and corresponding LSP
Information is encapsulated in a block number according to the inside according to certain form, then is sent by the original socket of link；
The resource that the original socket of step 104, link is provided as IP protocol stack is for including LSP ping and tracert application moulds
Upper layer module including block is used, and IP protocol stack judges whether the interface type of the original socket binding of link is OAM interfaces, such as
The interface of the original socket binding of fruit link is OAM interfaces, then goes to step 105；Otherwise step 106 is gone to；
When step 105, the processing of IP protocol stack hair are given out a contract for a project, if the interface of the original socket binding of link is OAM interfaces, use
The OAM interface drivers of IP protocol stack loading, the LSP ping that will be sent according to form during assembling, the original socket of parsing link
The information carried with tracert messages, is then sent to Forwarding plane by Information encapsulation into the message with MAC-IN-MAC,
Go to step 107；
If the interface of the original socket binding of step 106, link is not OAM interfaces, other corresponding types interfaces are used
Driving encapsulation, goes to step 107；
What step 107, the driving of Forwarding plane signaling received that control plane is sent to Forwarding plane carries LSP information to be detected
MAC-IN-MAC messages, be dealt into forwarding microcode, go to step 108；
Step 108, forwarding microcode parsing MAC-IN-MAC forms, obtain LSP ping and tracert message and LSP to be detected
Information, searches LSP forward tables, and upper MPLS label is encapsulated according to LSP forward tables, then by LSP ping and tracert message from
Correspondence outgoing interface is sent；
B, router receive LSP ping and tracert messages：
Step 201, Forwarding plane receive life span TTL=0 or 1 LSP ping and tracert messages；
After step 202, forwarding microcode identification LSP ping and tracert messages, by LSP ping and tracert message up sending
To control plane, carried when above sending, inside the MAC-IN-MAC forms of LSP ping and tracert messages LSP ping and
The receiving port information of tracert messages；
Step 203, control plane signaling driving are received after the message with MAC-IN-MAC, according to the message received
MAC-IN-MAC header parsings go out packet receiving interface, then by MAC-IN-MAC peel off after on be sent to corresponding in IP protocol stack connect
Mouthful；
Step 204, LSP ping and tracert application module create the original socket of link, and the original socket of the link is not tied up
Determine OAM interfaces, LSP ping and tracert messages are received from IP protocol stack by the original socket of the link, entered again afterwards
The protocol processes of row LSP ping and tracert application modules.
4. the method as claimed in claim 3 for realizing LSP ping and tracert on the router, it is characterised in that：Step
108 is further comprising the steps of：If LSP to be detected is that have active and standby scene, Forwarding plane send LSP ping and
During tracert messages, selection is sent from primary lsp tunnel.
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| CN109218196B (en) * | 2017-12-13 | 2020-09-08 | 新华三技术有限公司 | Information collection method, device, equipment and machine-readable storage medium |
| CN112737932B (en) * | 2020-12-25 | 2023-04-07 | 江苏省未来网络创新研究院 | DPDK-based high-performance IPSCE gateway |
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| US7898965B2 (en) * | 2007-10-12 | 2011-03-01 | Nortel Networks Limited | IP network and performance monitoring using ethernet OAM |
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