CN103684887A - Method and equipment for generating connectivity fault detection network system hardware table entry - Google Patents
Method and equipment for generating connectivity fault detection network system hardware table entry Download PDFInfo
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Abstract
The invention discloses a method for generating a connectivity fault detection network system hardware table entry, and is applied to first equipment which is to be added and has the hardware detection capability in a CFD (connectivity fault detection) network. The method comprises the following steps of: first equipment sends an LTM (link trace multicast) address message to member equipment in the CFD network; the LTM address message carries the level of MED (maintenance association end point) of the first equipment and the ID (identity) value of the MEP(maintenance association end point), the target MAC ((multiple access channel) in a PDU (protocol data unit) field is multicast MAC, and the source MAC in the PDU field is the bridge MAC of the first equipment; the first equipment receives an LTM unicast address message or an LTR (link trace response) message sent by the member equipment in the CFD network; a hardware table entry corresponding to the MEP ID of each piece of member equipment in the CFD network is built; the neighborhood with the corresponding member equipment is set to be normal.
Description
Technical field
The present invention relates to network communication and transmission technology, particularly a kind of method and apparatus that is communicated with the generation of error detection group network system hardware table item.
Background technology
CFD(Connectivity Fault Detection, be communicated with error detection) be the end-to-end OAM(Operations based on VLAN in a kind of double layer network, Administration and Maintenance, Operations, Administration and Maintenance) mechanism, be mainly used in detecting connectivity of link in double layer network, and when fault occurs, confirm fault location.
MD(Maintenance Domain, maintenance field) network that refers to that CFD covers or a part for network.In order accurately to locate fault point, in MD, introduced the concept of rank (level).MD is divided into eight grades, with integer 0～7, represents, numeral more large level is higher, and the scope of MD is also just larger.Can be adjacent or nested between different MD, but can not intersect, and can only be nested to low level MD by high-level MD when nested
Fig. 1 is a typical CFD networking schematic diagram, and maintenance field MD_A is nested with maintenance field MD_B in dotted line frame in solid box, and maintenance field MD_A is superior to maintenance field MD_B.If find that link is obstructed on border, MD_A territory, show that fault has appearred in the equipment of inside, MD_A territory, fault likely appears on these five equipment of Device A～Device E.At this moment, if also find that link is obstructed on border, MD_B territory, the possible scope in fault point just narrows down on these three equipment of Device B～Device D, and if equipment in MD_B territory is working properly, at least can determine Device C be do not have out of order.
Device A～Device E is 5 equipment in this CFD networking, white box on equipment is MEP(Maintenance Association End Point, maintaining end point), CCM(Continuity Check Message connects detection messages) by MEP, periodically send, be used for obtaining far-end MEP information, its transmission cycle has 7 ranks, as shown in table 1.
Table 1
| The value in time interval territory in CCM message | The transmission interval of CCM message | The time-out time of far-end MEP |
| 1 | 10/3 millisecond | 35/3 millisecond |
| 2 | 10 milliseconds | 35 milliseconds |
| 3 | 100 milliseconds | 350 |
| 4 | 1 second | 3.5 |
| 5 | 10 seconds | 35 seconds |
| 6 | 60 seconds | 210 |
| 7 | 600 seconds | 2100 seconds |
When the CCM transmission cycle of realizing agreement regulation in high reliability network environment is 10/3 millisecond (rank that CCM message sends the cycle is 1), it is the support that 300 CCM messages of transmission per second need hardware chip, therefore the ability that sends CCM message according to equipment can be two types by classification of equipment: have the equipment (equipment can send 1 grade of other CCM message) of hardware detection ability, without the equipment (equipment can not send 1 grade of other CCM message, can only send 2 ranks or the CCM message below 2 ranks) of hardware detection ability.
There is the equipment of hardware detection ability owing to being subject to the restriction of chip to need to set in advance the information of far-end neighbor; Specify far-end MEP list to be issued to hardware, then corresponding with it hardware resource is provided.Conventionally implementation has two kinds:
1, all MEP lists that Service Instance can comprise are all issued to hardware.
2, select the part MEP in a Service Instance, then by user, issued by hand.
The shortcoming of implementation 1 is indiscriminate, does not consider actual usage quantity, and acquiescence issues numerous hardware table items, takies in a large number hardware resource, not only causes the waste of hardware resource, has also limited the Service Instance quantity that equipment can be supported.
When implementation 2 underactions, the network capacity extension, need again the manual detection list of specifying; In addition, the list of appointment is unalterable can not be consistent with the MEP quantity that reality is used, and therefore also has certain hardware resource waste.
Summary of the invention
In view of this, the present invention proposes a kind of method and apparatus that error detection group network system hardware table item generates that is communicated with, the link trace unicast address message (LTM that the equipment to be added with hardware detection ability sends by receiving CFD networking member device, Link Trace Message) or link trace response message (LTR, Link Trace Reply), extract the MEP(Maintenance Association End Point of the CFD networking member device that described LTM unicast address message or LTR message carry, safeguard end end points) information, create the hardware table item of corresponding described CFD networking member device MEP, thereby avoid issuing the useless MEP that all MEP lists that a Service Instance can comprise cause and take resource phenomenon.The technical scheme that the present invention proposes is:
Be communicated with the method that error detection group network system hardware table item generates, be applied to have in described connection error detection CFD networking first equipment to be added of hardware detection ability, the method comprises:
Described the first equipment sends link trace LTM multicast address message to the member device in described CFD networking, described LTM multicast address message carries rank and the MEP ID value of the maintaining end point MEP of described the first equipment, object MAC in described LTM multicast address message protocol data cell PDU field is multicast MAC, and the source MAC in PDU field is the bridge MAC of described the first equipment;
Described the first equipment receives that LTM unicast address message or link trace that member device in described CFD networking sends reply LTR message, set up respectively the hardware table item of each member device MEP ID in corresponding described CFD networking, arranging is normal with the neighborhood of corresponding member device; Wherein,
Described LTM unicast address message is that the neighborhood of hardware table item, setting and described the first equipment of LTM multicast address message that the member device in described CFD networking with hardware detection ability sends according to described the first equipment MEP ID that sets up corresponding described the first equipment is to send after normal, object MAC in described LTM unicast address message PDU field is the bridge MAC of described the first equipment, and described LTM unicast address message carries the MEP ID in the CFD networking that sends described LTM unicast address message with the member device of hardware detection ability;
Described LTR message is that the member device in described CFD networking without hardware detection ability sends according to the LTM multicast address message of described the first equipment transmission, and described LTR message carries the MEP ID in the CFD networking that sends described LTR message without the member device of hardware detection ability.
In such scheme, the method further comprises:
Described the first equipment is received after the LTM unicast address message or LTR message that in described CFD networking, member device sends, judge whether to create the hardware table item of each member device MEP ID in corresponding described CFD networking, if, reply LTR message to sending the member device of LTM unicast address message in described CFD networking, if not, set up the hardware table item of member device MEP ID in corresponding described CFD networking, and reply LTR message to sending the member device of LTM unicast address message in described CFD networking, described LTR message does not carry the MEP ID of described the first equipment.
Be communicated with the method that error detection group network system hardware table item generates, be applied to not have in described connection error detection CFD networking first equipment to be added of hardware detection ability, the method comprises:
Described the first equipment sends link trace LTM multicast address message to the member device in described CFD networking, described LTM multicast address message carries rank and the MEP ID value of the maintaining end point MEP of described the first equipment, object MAC in described LTM multicast address message protocol data cell PDU field is multicast MAC, and the source MAC in PDU field is the bridge MAC of described the first equipment;
Described the first equipment receives that LTM unicast address message or link trace that member device in described CFD networking sends reply LTR message; Wherein,
Described LTM unicast address message is that the neighborhood of hardware table item, setting and described the first equipment of LTM multicast address message that the member device in described CFD networking with hardware detection ability sends according to described the first equipment MEP ID that sets up corresponding described the first equipment is to send after normal, object MAC in described LTM unicast address message PDU field is the bridge MAC of described the first equipment, and described LTM unicast address message carries the MEP ID in the CFD networking that sends described LTM unicast address message with the member device of hardware detection ability;
Described LTR message is that the member device in described CFD networking without hardware detection ability sends according to the LTM multicast address message of described the first equipment transmission, and described LTR message carries the MEP ID in the CFD networking that sends described LTR message without the member device of hardware detection ability.
In such scheme, the method further comprises:
Described the first equipment is received after the LTM unicast address message that in described CFD networking, member device sends, described the first device replied LTR message is given the member device that sends LTM unicast address message in described CFD networking, and described LTR message does not carry the MEP ID of described the first equipment.
Be communicated with the method that error detection group network system hardware table item generates, be applied to have in described connection error detection CFD networking the member device of hardware detection ability, the first equipment is the equipment to be added of described CFD networking, and the method comprises:
Described member device receives the link trace LTM multicast address message that described the first equipment sends, described LTM multicast address message carries rank and the MEP ID value of the maintaining end point MEP of described the first equipment, object MAC in the protocol Data Unit PDU field of described LTM multicast address message is multicast MAC, and the source MAC in PDU field is the bridge MAC of described the first equipment;
Described member device is set up the hardware table item of the MEP ID of corresponding described the first equipment, and arranging with the neighborhood of described the first equipment is normal;
Described member device sends LTM unicast address message to described the first equipment, while thering is hardware detection ability for described the first equipment, set up the hardware table item of corresponding described member device MEP ID, object MAC in described LTM unicast address message PDU field is the bridge MAC of described the first equipment, and described LTM unicast address message carries the MEP ID of described member device.
In such scheme, the method further comprises:
Described member device receives after the LTM multicast address message of described the first equipment transmission, judge whether to create the hardware table item of corresponding described the first equipment MEP ID, if, send LTM unicast address message to described the first equipment, if not, set up the hardware table item of corresponding described the first equipment MEP ID, and send LTM unicast address message to described the first equipment.
Be communicated with the method that error detection group network system hardware table item generates, be applied to not have in described connection error detection CFD networking the member device of hardware detection ability, the first equipment is the equipment to be added of described CFD networking, and the method comprises:
Described member device receives the link trace LTM multicast address message that described the first equipment sends, described LTM multicast address message carries rank and the MEP ID value of the maintaining end point MEP of described the first equipment, object MAC in the protocol Data Unit PDU field of described LTM multicast address message is multicast MAC, and the source MAC in PDU field is the bridge MAC of described the first equipment;
Described member device is replied LTR message to described the first equipment, sets up the hardware table item of corresponding described member device MEP ID while having hardware detection ability for described the first equipment, and wherein said LTR message carries the MEP ID of described member device.
An equipment, described equipment for be communicated with in error detection CFD networking, have hardware detection ability equipment to be added, this equipment comprises:
Message sending module, for sending link trace LTM multicast address message to the member device of described CFD networking, described LTM multicast address message carries rank and the MEP ID value of the maintaining end point MEP of this equipment, object MAC in described LTM multicast address message protocol data cell PDU field is multicast MAC, the bridge MAC that the source MAC in PDU field is this equipment;
Message receiver module, replys LTR message for receiving LTM unicast address message or the link trace of described CFD networking member device transmission, wherein,
Described LTM unicast address message is LTM multicast address message that the member device in described CFD networking with hardware detection ability sends according to this equipment hardware table item of setting up the MEP ID of corresponding this equipment, arrange and the neighborhood of this equipment is to send after normal, the bridge MAC that object MAC in described LTM unicast address message PDU field is this equipment, described LTM unicast address message carries the MEP ID in the CFD networking that sends described LTM unicast address message with the member device of hardware detection ability;
Described LTR message is that the member device in described CFD networking without hardware detection ability sends according to the LTM multicast address message of this equipment transmission, and described LTR message carries the MEP ID in the CFD networking that sends described LTR message without the member device of hardware detection ability;
List item creation module, for setting up respectively the hardware table item of corresponding described each member device of CFD networking MEP ID, arranging is normal with the neighborhood of corresponding member device.
In such scheme, this equipment further comprises:
Judge module, for described the first equipment, receive after the LTM unicast address message or LTR message that described CFD networking member device sends, judge whether to create the hardware table item of each member device MEP ID in corresponding described CFD networking, if NO, indication list item creation module creates corresponding hardware table item, and arranging is normal with the neighborhood of corresponding member device;
Described message sending module is further used for, if described message receiver module is received the LTM unicast address message that in described CFD networking, member device sends, send LTR message to sending the member device of LTM unicast address message in described CFD networking, described LTR message does not carry the MEP ID of described the first equipment.
An equipment, described equipment is for being communicated with the equipment to be added in error detection CFD networking without hardware detection ability, and this equipment comprises:
Message sending module, for sending link trace LTM multicast address message to the member device of described CFD networking, described LTM multicast address message carries rank and the MEP ID value of the maintaining end point MEP of this equipment, object MAC in described LTM multicast address message protocol data cell PDU field is multicast MAC, the bridge MAC that the source MAC in PDU field is this equipment;
Message receiver module, replys LTR message for receiving LTM unicast address message or the link trace of described CFD networking member device transmission; Wherein,
Described LTM unicast address message is LTM multicast address message that the member device in described CFD networking with hardware detection ability sends according to the described message sending module hardware table item of setting up the MEP ID of corresponding this equipment, arrange and the neighborhood of this equipment is to send after normal, the bridge MAC that object MAC in described LTM unicast address message PDU field is this equipment, described LTM unicast address message carries the MEP ID in the CFD networking that sends described LTM unicast address message with the member device of hardware detection ability;
Described LTR message is that the member device in described CFD networking without hardware detection ability sends according to the LTM multicast address message of described message sending module transmission, and described LTR message carries the MEP ID in the CFD networking that sends described LTR message without the member device of hardware detection ability.
In such scheme, if described message receiver module is received the LTM unicast address message that in described CFD networking, member device sends,
Described message sending module is further used for, and sends LTR message to sending the member device of LTM unicast address message in described CFD networking, and described LTR message does not carry the MEP ID of described the first equipment.
An equipment, described equipment has the member device of hardware detection ability for being communicated with error detection CFD networking, and the first equipment is the equipment to be added of described CFD networking, and this equipment comprises:
Message receiver module, the link trace LTM multicast address message sending for receiving described the first equipment, described LTM multicast address message carries rank and the MEP ID value of the maintaining end point MEP of described the first equipment, object MAC in the protocol Data Unit PDU field of described LTM multicast address message is multicast MAC, and the source MAC in PDU field is the bridge MAC of described the first equipment;
List item creation module, for setting up the hardware table item of the MEP ID of corresponding described the first equipment, arranging with the neighborhood of described the first equipment is normal;
Message sending module, be used for sending LTM unicast address message to described the first equipment, while thering is hardware detection ability for described the first equipment, set up the hardware table item of corresponding this equipment MEP ID, object MAC in described LTM unicast address message PDU field is the bridge MAC of described the first equipment, and described LTM unicast address message carries the MEP ID of this equipment.
In such scheme, this equipment further comprises:
Judge module, for described member device, receive after the LTM multicast address message of described the first equipment transmission, judge whether to create the hardware table item of corresponding described the first equipment MEP ID, if NO, indication list item creation module is set up the hardware table item of the MEP ID of corresponding described the first equipment, and arranging with the neighborhood of described the first equipment is normal.
An equipment, described equipment does not have the member device of hardware detection ability for being communicated with error detection CFD networking, and the first equipment is the equipment to be added of described CFD networking, and this equipment comprises:
Message receiver module, the link trace LTM multicast address message sending for receiving described the first equipment, described LTM multicast address message carries rank and the MEP ID value of the maintaining end point MEP of described the first equipment, object MAC in the protocol Data Unit PDU field of described LTM multicast address message is multicast MAC, and the source MAC in PDU field is the bridge MAC of described the first equipment;
Message sending module, for sending LTR message to described the first equipment, sets up the hardware table item of corresponding this equipment MEP ID while having hardware detection ability for described the first equipment, wherein said LTR message carries the MEP ID of this member device.
In sum, the technical scheme that the present invention proposes can efficient solution be determined and is indiscriminately issued numerous hardware table items and take great amount of hardware resources, cause the problem of the waste of hardware resource, by CFD networking equipment is dynamic, adds and delete the hardware table item that need to set up neighborhood, improved equipment and can support the quantity of Service Instance, avoided useless MEP to take and firmly add resource.
Accompanying drawing explanation
Fig. 1 is a kind of CFD networking schematic diagram.
Fig. 2 is LTM multicast address message format.
Fig. 3 is self-defining LTR message format.
Fig. 4 is the networking schematic diagram in embodiment.
Fig. 5 is the flow chart of embodiment of the method 1.
Fig. 6 is the flow chart of embodiment of the method 2.
Fig. 7 is the flow chart of embodiment of the method 3.
Fig. 8 is the flow chart of embodiment of the method 4.
Fig. 9 is the device structure schematic diagram to be added of the CFD networking with hardware detection ability of one embodiment of the invention.
The device structure schematic diagram to be added of the CFD networking without hardware detection ability of Figure 10 position one embodiment of the invention.
Figure 11 is the CFD networking member device structural representation with hardware detection ability of one embodiment of the invention.
Figure 12 is the CFD networking member device structural representation without hardware detection ability of one embodiment of the invention.
Embodiment
Clearer for what the object, technical solutions and advantages of the present invention were expressed, below in conjunction with drawings and the specific embodiments, the present invention is further described in more detail.
The technical scheme of one embodiment of the invention is:
Described the first equipment sends link trace LTM multicast address message to the member device in described CFD networking, described LTM multicast address message carries rank and the MEP ID value of the maintaining end point MEP of described the first equipment, object MAC in described LTM multicast address message protocol data cell PDU field is multicast MAC, and the source MAC in PDU field is the bridge MAC of described the first equipment;
Described the first equipment receives that LTM unicast address message or link trace that member device in described CFD networking sends reply LTR message, set up respectively the hardware table item of each member device MEP ID in corresponding described CFD networking, arranging is normal with the neighborhood of corresponding member device; Wherein,
Described LTM unicast address message is that the neighborhood of hardware table item, setting and described the first equipment of LTM multicast address message that the member device in described CFD networking with hardware detection ability sends according to described the first equipment MEP ID that sets up corresponding described the first equipment is to send after normal, object MAC in described LTM unicast address message PDU field is the bridge MAC of described the first equipment, and described LTM unicast address message carries the MEP ID in the CFD networking that sends described LTM unicast address message with the member device of hardware detection ability;
Described LTR message is that the member device in described CFD networking without hardware detection ability sends according to the LTM multicast address message of described the first equipment transmission, and described LTR message carries the MEP ID in the CFD networking that sends described LTR message without the member device of hardware detection ability.
In the present embodiment, before described the first equipment application adds CFD networking, the basic configuration of its CFD all completes: enable CFD measuring ability, configuration service exemplary configuration MEP, enable the CCM(Continuity Check Message of MEP, connect detection messages) message sending function.Described the first equipment is as the equipment of CFD networking to be added, no matter whether it possesses hardware detection ability, first it send link trace message (LTM, Linktrace Message) when adding CFD networking, and described LTM message is LTM multicast address message.
Described LTM multicast address message is that described the first equipment sends to described CFD networking member device, protocol Data Unit (the PDU of described LTM multicast address message, Protocol Data Unit) the object MAC(Target MAC in field) for the object MAC(in Ethernet message head is multicast MAC), its form is 01-80-c2-00-00-3y, the value of y is the rank of MEP, the corresponding y value of 0 to 7 rank MEP is 8-F, and message format as shown in Figure 2.Because described LTM multicast address message is multicast message, so the MEP in CFD networking under same Service Instance can receive, now, because the object MAC in LTM PDU field is multicast address, the whole member devices that receive described LTM multicast address message in CFD networking all can be processed this LTM multicast address message.
Member device in CFD networking is divided into two classes, has the member device of hardware detection ability and does not have the member device of hardware detection ability.It is different that this two class members equipment receives the processing of doing after the LTM multicast address message of described the first equipment transmission, now divides briefing:
(1) member device that has a hardware detection ability receives after the LTM multicast address message that described the first equipment sends, and the neighborhood of setting up hardware table item, setting and described the first equipment of the MEP ID to should LTM multicast address message carrying is normal.There is the member device of hardware detection ability after new MEP ID hardware table item is set, just can identify the CCM message that the first equipment is sent.
Described member device receives after the LTM multicast address message of described the first equipment transmission, can also further judge whether to create the hardware table item of corresponding described the first equipment MEP ID, if, send LTM unicast address message to described the first equipment, if not, set up the hardware table item of corresponding described the first equipment MEP ID, and send LTM unicast address message to described the first equipment.
Object MAC in described LTM unicast address message PDU field is the bridge MAC of described the first equipment, and the self-defined TLV field of described LTM unicast address message is carried the MEP ID of the member device with hardware detection ability that sends described LTM unicast address message.Object MAC in the LTM PDU field of sending because of the member device with hardware detection ability is the bridge MAC of the first equipment, is unicast address, so only have described the first equipment can process this LTM unicast address message in same Service Instance.
If described the first equipment has hardware detection ability, receive and generate the hardware table item corresponding with the MEP ID of member device with hardware detection ability after described LTM unicast address message, thereby can process, have the CCM message that the member device of hardware detection ability is sent, setting up the neighborhood that itself and CFD networking have the member device of hardware detection ability is normal.
Receive after described LTM unicast address message, described the first equipment can also further judge whether to create the hardware table item of each member device MEP ID in corresponding described CFD networking, if, reply LTR message to sending the member device of LTM unicast address message in described CFD networking, otherwise set up the hardware table item that sends the member device MEP ID of LTM unicast address message in corresponding described CFD networking, then reply LTR message to sending the member device of LTM unicast address message in described CFD networking, described LTR message does not carry the MEP ID of described the first equipment.
If described the first equipment does not have hardware detection ability, do not need to set up corresponding hardware table item and just can directly process the CCM message that member device that CFD networking has hardware detection ability is sent, setting up the neighborhood that itself and CFD networking have the member device of hardware detection ability is normal, so do not there is the first equipment of hardware detection ability, do not receive that CFD networking has after the LTM unicast address message that the member device of hardware detection ability sends, directly reply a LTR message, this LTR message does not carry the MEP ID of this equipment.
(2) member device that does not have hardware detection ability can directly be processed the CCM message that described the first equipment sends, the member device therefore without hardware detection ability receives after the LTM multicast address message of described the first equipment transmission, responds a self-defining LTR message.As shown in Figure 3, the self-defined TLV(Type/Length/Value of self-defined LTR message, type/length/value) in carry the member device without hardware detection ability MEP ID value.
If described the first equipment has hardware detection ability, receive and generate the hardware table item corresponding with the MEP ID of member device without hardware detection ability after described LTR message, thereby can process, do not have the CCM message that the member device of hardware detection ability is sent, setting up the neighborhood that itself and CFD networking do not have the member device of hardware detection ability is normal.
Receive after described self-defined LTR message, described the first equipment can also further judge whether to create the hardware table item in corresponding described CFD networking without the member device MEP ID of hardware detection ability, if, be left intact, otherwise set up the hardware table item in corresponding described CFD networking without the member device MEP ID of hardware detection ability.
If described the first equipment does not have hardware detection ability, do not need to set up corresponding hardware table item and just can directly process the CCM message that member device that CFD networking do not have hardware detection ability is sent, setting up the neighborhood that itself and CFD networking do not have the member device of hardware detection ability is normal.
For avoiding the neighbours that are in for a long time fail state to take hardware resource, user can be according to oneself need to make the automatic link trace (LT of devices enable, Linktrace) function, when enabling this function, equipment is in by removing within the regular hour hardware resource that the neighbours of fail state take for a long time.Be implemented as follows:
A timer is set, when device-aware neighbor device fail, triggers timer, the hardware table item of the corresponding fail state of unit deletion neighbor device MEP ID after timer expiry.This timer is set a time range, by user, specifies duration.
User enables automatic LT function, be certain MEP perception far-end neighbor state fail, and timer expiry is deleted after corresponding hardware table item, just self-defining LT message (LTM message or LTR message) in the transmission this case in cycle, follow-up processing flow is as described above.Situation that can not normal process CCM message after avoiding thus under the abnormal conditions such as single-pass directly deleting hardware resource and can making link normal.
With specific embodiment, the various situations of the application are described respectively below.As shown in Figure 4, Device A is an equipment to be added of CFD networking, and its MEP rank is that 5, DeviceB～Device D is the member device in CFD networking.Device A～Device D belongs to same Service Instance.Wherein Device B is the equipment with hardware detection ability, and Device C and Device D do not have hardware detection ability.And Device B does not have to set up the hardware table item corresponding with the MEP ID of Device A.
Embodiment 1
The present embodiment hypothesis Device A has hardware detection ability, and there is no to set up the hardware table item corresponding with the MEP ID of Device B, take and there is the Device B with hardware detection ability in the Device A of hardware detection ability and CFD networking and create hardware table item and set up neighborhood and present techniques scheme is described as example, the member device that other CFD networkings have hardware detection ability is identical with the method that Device A creates hardware table item, does not repeat them here.Fig. 5 is the flow chart of the present embodiment, comprises the following steps:
Step 501:Device A sends LTM multicast address message to the member device in CFD networking, the self-defined TLV field of described LTM multicast address message is carried the MEP ID value of Device A, object MAC in PDU field is multicast MAC, the bridge MAC that the source MAC in PDU field is DeviceA.
In this step, object MAC in the PDU field of the LTM multicast address message that Device A sends is multicast MAC, the form of described multicast MAC is 01-80-c2-00-00-3y, y is the rank of described MEP, the corresponding y value of 0 to 7 rank MEP is 8-F, the MEP rank of the present embodiment Device A is 5, and corresponding y value is D.
Because described LTM multicast address message is multicast message, so the equipment that belongs to same Service Instance with Device A in CFD networking all can be processed this message, any equipment of Device B～Device D all can receive this LTM multicast address message and process.
Step 502:Device B receives the LTM multicast address message that Device A sends, and the neighborhood of setting up hardware table item, setting and the Device A corresponding with the MEP ID of Device A is normal, sends LTM unicast address message to Device A.
In this step, Device B receives the LTM multicast address message that Device A sends, the hardware table item that contrast has existed, and finding does not have corresponding with it hardware table item, set up the hardware table item corresponding with the MEP ID of Device A, arranging with the neighborhood of Device A is normal.Device B, after the hardware table item corresponding with the MEP ID of Device A is set, just can identify the CCM message that Device A sends, thereby sets up the neighborhood with Device A.
Device B has created after the hardware table item corresponding with the MEP ID of Device A, send a LTM unicast address message, object MAC in described LTM unicast address message PDU field is the bridge MAC of Device A, and self-defined TLV field is carried the MEP ID of Device B.Object MAC in the LTM unicast address message PDU field of sending because of Device B is the bridge MAC of Device A, is unicast address, so only have Device A can process this LTM unicast address message in same Service Instance.
Step 503:Device A receives the LTM unicast address message that Device B sends, and creates the hardware table item of the MEP ID of corresponding Device B, replys LTR message to Device B.
In this step, Device A receives the LTM unicast address message that Device B sends, the hardware table item that contrast has existed, finding does not have corresponding with it hardware table item, create the hardware table item corresponding with the MEP ID of Device B, arranging with the neighborhood of Device B is normal, and Device A is after arranging the hardware table item corresponding with the MEP ID of Device B, just can identify the CCM message that Device B sends, thereby set up the neighborhood with Device B.
Device A replys LTR message to Device B afterwards.Here, if Device A finds to have had the hardware table item corresponding with the MEP ID of Device B, LTM unicast address message is not done to any processing, directly reply LTR message to Device B, in described LTR message, do not carry the MEP ID of Device A.
Embodiment 2
The present embodiment hypothesis Device A has hardware detection ability, and there is no to set up the hardware table item corresponding with the MEP ID of Device C, take and there is the Device C without hardware detection ability in the Device A of hardware detection ability and CFD networking and create hardware table item and set up neighborhood and present techniques scheme is described as example, the member device that other CFD networkings do not have hardware detection ability is identical with the method that Device A creates hardware table item, does not repeat them here.Fig. 6 is the flow chart of the present embodiment, comprises the following steps:
Step 601 is identical with step 501, is not described in detail in this.
Step 602:Device C receives after the LTM multicast address message of Device A transmission, responds a self-defining LTR message, and described self-defined LTR message carries the MEP ID of Device C.
In this step, Device C does not have hardware detection ability, do not need to set up the hardware table item corresponding with the MEPID of Device A and just can directly process the CCM message that Device A sends, therefore Device C receives after the LTM multicast address message of Device A transmission, responds a self-defining LTR message.In the self-defined TLV of self-defined LTR message, carry the MEP ID value of Device C.
Step 603:Device A receives the self-defined LTR message from Device C, creates the hardware table item of the MEP ID of corresponding Device C.
In this step, Device A receives the hardware table item having existed from contrast after the self-defined LTR message of Device C, and finding does not have corresponding with it hardware table item, creates the hardware table item of the MEP ID of corresponding Device C.Device A, after new MEP ID hardware table item is set, just can identify the CCM message that Device C sends, thereby sets up the neighborhood with Device C, and neighbor state is normal.
Embodiment 3
The present embodiment hypothesis Device A does not have hardware detection ability, take and do not there is the Device B with hardware detection ability in the Device A of hardware detection ability and CFD networking and create hardware table item and set up neighborhood and present techniques scheme is described as example, the member device that other CFD networkings have hardware detection ability is identical with the method that Device A creates hardware table item, does not repeat them here.Fig. 7 is the flow chart of the present embodiment, comprises the following steps:
Step 701 is identical with step 501, is not described in detail in this.
Step 702 is identical with step 502, is not described in detail in this.
Step 703:Device A receives the LTM unicast address message that Device B sends, and replys LTR message to Device B.
Because Device A does not have hardware detection ability, do not need the corresponding hardware table item of MEP ID of setting up with Device B just can directly process the CCM message that Device B sends, the neighborhood of itself and Device B is normal, so Device A receives after the LTM unicast address message that Device B sends, be left intact, directly reply a LTR message, this LTR message does not carry the MEP ID of Device A.
The present embodiment hypothesis Device A does not have hardware detection ability, take and do not there is the Device A of hardware detection ability and the Device C without hardware detection ability in CFD networking and set up neighborhood and present techniques scheme is described as example, the member device that other CFD networkings do not have hardware detection ability is identical with the method that Device A creates hardware table item, does not repeat them here.Fig. 8 is the flow chart of the present embodiment, comprises the following steps:
Step 801 is identical with step 601, is not described in detail in this.
Step 802 is identical with step 602, is not described in detail in this.
Because Device A does not have hardware detection ability, do not need the corresponding hardware table item of MEP ID of setting up with Device C just can directly process the CCM message that Device C sends, the neighborhood of itself and Device C is normal, so Device A receives after the self-defined LTR message that Device C sends, is left intact.
When above embodiment adds CFD networking to have the equipment of hardware detection ability, respectively and in CFD networking, there is the equipment of hardware detection ability and do not have and between the equipment of hardware detection ability, create hardware table item and set up neighborhood, and the equipment without hardware detection ability is while adding CFD networking, respectively and in CFD networking, there is the equipment of hardware detection ability and do not have and between the equipment of hardware detection ability, create hardware table item to set up neighborhood be that example is illustrated technical solution of the present invention, by embodiment, can find out, only has the corresponding hardware table item of setting up of ability when equipment needs to communicate by letter with the member device in CFD networking, rather than all MEP lists that just a Service Instance can be comprised when initial are all issued to hardware, avoided useless MEP to take hardware resource, improve equipment and can support the quantity of Service Instance.
For said method, the present invention also discloses a kind of equipment, and described equipment is for being communicated with the equipment to be added in error detection CFD networking with hardware detection ability, and equipment disclosed by the invention as shown in Figure 9, comprising:
Described LTM unicast address message is LTM multicast address message that the member device in described CFD networking with hardware detection ability sends according to this equipment hardware table item of setting up the MEP ID of corresponding this equipment, arrange and the neighborhood of this equipment is to send after normal, the bridge MAC that object MAC in described LTM unicast address message PDU field is this equipment, described LTM unicast address message carries the MEP ID in the CFD networking that sends described LTM unicast address message with the member device of hardware detection ability;
Described LTR message is that the member device in described CFD networking without hardware detection ability sends according to the LTM multicast address message of this equipment transmission, and described LTR message carries the MEP ID in the CFD networking that sends described LTR message without the member device of hardware detection ability;
List item creation module 903, for setting up respectively the hardware table item of corresponding described each member device of CFD networking MEPID, arranging is normal with the neighborhood of corresponding member device.
Described equipment further comprises,
Described message sending module 901 is further used for, if described message receiver module is received the LTM unicast address message that in described CFD networking, member device sends, send LTR message to sending the member device of LTM unicast address message in described CFD networking, described LTR message does not carry the MEPID of described the first equipment.
For said method, the invention also discloses a kind of equipment, described equipment is for being communicated with the equipment to be added in error detection CFD networking without hardware detection ability, and as shown in figure 10, this equipment comprises:
Described LTM unicast address message is LTM multicast address message that the member device in described CFD networking with hardware detection ability sends according to the described message sending module hardware table item of setting up the MEP ID of corresponding this equipment, arrange and the neighborhood of this equipment is to send after normal, the bridge MAC that object MAC in described LTM unicast address message PDU field is this equipment, described LTM unicast address message carries the MEP ID in the CFD networking that sends described LTM unicast address message with the member device of hardware detection ability;
Described LTR message is that the member device in described CFD networking without hardware detection ability sends according to the LTM multicast address message of described message sending module transmission, and described LTR message carries the MEP ID in the CFD networking that sends described LTR message without the member device of hardware detection ability.
If described message receiver module 1002 is received the LTM unicast address message that in described CFD networking, member device sends,
Described message sending module 1001 is further used for, and sends LTR message to sending the member device of LTM unicast address message in described CFD networking, and described LTR message does not carry the MEPID of described the first equipment.
For said method, the present invention also discloses a kind of equipment, and described equipment has the member device of hardware detection ability for being communicated with error detection CFD networking, and the first equipment is the equipment to be added of described CFD networking, and as shown in figure 11, this equipment comprises:
List item creation module 1102, for setting up the hardware table item of the MEP ID of corresponding described the first equipment, arranging with the neighborhood of described the first equipment is normal;
Described equipment also comprises, judge module 1104, for described member device, receive after the LTM multicast address message of described the first equipment transmission, judge whether to create the hardware table item of corresponding described the first equipment MEP ID, if NO, indication list item creation module is set up the hardware table item of the MEP ID of corresponding described the first equipment, and arranging with the neighborhood of described the first equipment is normal.
For said method, the present invention also discloses a kind of equipment, and described equipment does not have the member device of hardware detection ability for being communicated with error detection CFD networking, and the first equipment is the equipment to be added of described CFD networking, and as shown in figure 12, this equipment comprises:
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any modifications of making within the spirit and principles in the present invention, be equal to replacement, improvement etc., within all should being included in the scope of protection of the invention.
Claims (14)
1. be communicated with the method that error detection group network system hardware table item generates, be applied to have in described connection error detection CFD networking first equipment to be added of hardware detection ability, it is characterized in that, the method comprises:
Described the first equipment sends link trace LTM multicast address message to the member device in described CFD networking, described LTM multicast address message carries rank and the MEP ID value of the maintaining end point MEP of described the first equipment, object MAC in described LTM multicast address message protocol data cell PDU field is multicast MAC, and the source MAC in PDU field is the bridge MAC of described the first equipment;
Described the first equipment receives that LTM unicast address message or link trace that member device in described CFD networking sends reply LTR message, set up respectively the hardware table item of each member device MEP ID in corresponding described CFD networking, arranging is normal with the neighborhood of corresponding member device; Wherein,
Described LTM unicast address message is that the neighborhood of hardware table item, setting and described the first equipment of LTM multicast address message that the member device in described CFD networking with hardware detection ability sends according to described the first equipment MEP ID that sets up corresponding described the first equipment is to send after normal, object MAC in described LTM unicast address message PDU field is the bridge MAC of described the first equipment, and described LTM unicast address message carries the MEP ID in the CFD networking that sends described LTM unicast address message with the member device of hardware detection ability;
Described LTR message is that the member device in described CFD networking without hardware detection ability sends according to the LTM multicast address message of described the first equipment transmission, and described LTR message carries the MEP ID in the CFD networking that sends described LTR message without the member device of hardware detection ability.
2. method according to claim 1, is characterized in that, the method further comprises:
Described the first equipment is received after the LTM unicast address message or LTR message that in described CFD networking, member device sends, judge whether to create the hardware table item of each member device MEP ID in corresponding described CFD networking, if, reply LTR message to sending the member device of LTM unicast address message in described CFD networking, if not, set up the hardware table item of member device MEP ID in corresponding described CFD networking, and reply LTR message to sending the member device of LTM unicast address message in described CFD networking, described LTR message does not carry the MEP ID of described the first equipment.
3. be communicated with the method that error detection group network system hardware table item generates, be applied to not have in described connection error detection CFD networking first equipment to be added of hardware detection ability, it is characterized in that, the method comprises:
Described the first equipment sends link trace LTM multicast address message to the member device in described CFD networking, described LTM multicast address message carries rank and the MEP ID value of the maintaining end point MEP of described the first equipment, object MAC in described LTM multicast address message protocol data cell PDU field is multicast MAC, and the source MAC in PDU field is the bridge MAC of described the first equipment;
Described the first equipment receives that LTM unicast address message or link trace that member device in described CFD networking sends reply LTR message; Wherein,
Described LTM unicast address message is that the neighborhood of hardware table item, setting and described the first equipment of LTM multicast address message that the member device in described CFD networking with hardware detection ability sends according to described the first equipment MEP ID that sets up corresponding described the first equipment is to send after normal, object MAC in described LTM unicast address message PDU field is the bridge MAC of described the first equipment, and described LTM unicast address message carries the MEP ID in the CFD networking that sends described LTM unicast address message with the member device of hardware detection ability;
Described LTR message is that the member device in described CFD networking without hardware detection ability sends according to the LTM multicast address message of described the first equipment transmission, and described LTR message carries the MEP ID in the CFD networking that sends described LTR message without the member device of hardware detection ability.
4. method according to claim 3, is characterized in that, the method further comprises:
Described the first equipment is received after the LTM unicast address message that in described CFD networking, member device sends, described the first device replied LTR message is given the member device that sends LTM unicast address message in described CFD networking, and described LTR message does not carry the MEP ID of described the first equipment.
5. one kind is communicated with the method that error detection group network system hardware table item generates, be applied to have in described connection error detection CFD networking the member device of hardware detection ability, the first equipment is the equipment to be added of described CFD networking, it is characterized in that, the method comprises:
Described member device receives the link trace LTM multicast address message that described the first equipment sends, described LTM multicast address message carries rank and the MEP ID value of the maintaining end point MEP of described the first equipment, object MAC in the protocol Data Unit PDU field of described LTM multicast address message is multicast MAC, and the source MAC in PDU field is the bridge MAC of described the first equipment;
Described member device is set up the hardware table item of the MEP ID of corresponding described the first equipment, and arranging with the neighborhood of described the first equipment is normal;
Described member device sends LTM unicast address message to described the first equipment, while thering is hardware detection ability for described the first equipment, set up the hardware table item of corresponding described member device MEP ID, object MAC in described LTM unicast address message PDU field is the bridge MAC of described the first equipment, and described LTM unicast address message carries the MEP ID of described member device.
6. method according to claim 5, is characterized in that, the method further comprises:
Described member device receives after the LTM multicast address message of described the first equipment transmission, judge whether to create the hardware table item of corresponding described the first equipment MEP ID, if, send LTM unicast address message to described the first equipment, if not, set up the hardware table item of corresponding described the first equipment MEP ID, and send LTM unicast address message to described the first equipment.
7. one kind is communicated with the method that error detection group network system hardware table item generates, be applied to not have in described connection error detection CFD networking the member device of hardware detection ability, the first equipment is the equipment to be added of described CFD networking, it is characterized in that, the method comprises:
Described member device receives the link trace LTM multicast address message that described the first equipment sends, described LTM multicast address message carries rank and the MEP ID value of the maintaining end point MEP of described the first equipment, object MAC in the protocol Data Unit PDU field of described LTM multicast address message is multicast MAC, and the source MAC in PDU field is the bridge MAC of described the first equipment;
Described member device is replied LTR message to described the first equipment, sets up the hardware table item of corresponding described member device MEP ID while having hardware detection ability for described the first equipment, and wherein said LTR message carries the MEP ID of described member device.
8. an equipment, described equipment for be communicated with in error detection CFD networking, have hardware detection ability equipment to be added, it is characterized in that, this equipment comprises:
Message sending module, for sending link trace LTM multicast address message to the member device of described CFD networking, described LTM multicast address message carries rank and the MEP ID value of the maintaining end point MEP of this equipment, object MAC in described LTM multicast address message protocol data cell PDU field is multicast MAC, the bridge MAC that the source MAC in PDU field is this equipment;
Message receiver module, replys LTR message for receiving LTM unicast address message or the link trace of described CFD networking member device transmission, wherein,
Described LTM unicast address message is LTM multicast address message that the member device in described CFD networking with hardware detection ability sends according to this equipment hardware table item of setting up the MEP ID of corresponding this equipment, arrange and the neighborhood of this equipment is to send after normal, the bridge MAC that object MAC in described LTM unicast address message PDU field is this equipment, described LTM unicast address message carries the MEP ID in the CFD networking that sends described LTM unicast address message with the member device of hardware detection ability;
Described LTR message is that the member device in described CFD networking without hardware detection ability sends according to the LTM multicast address message of this equipment transmission, and described LTR message carries the MEP ID in the CFD networking that sends described LTR message without the member device of hardware detection ability;
List item creation module, for setting up respectively the hardware table item of corresponding described each member device of CFD networking MEP ID, arranging is normal with the neighborhood of corresponding member device.
9. equipment according to claim 8, is characterized in that, this equipment further comprises:
Judge module, for described the first equipment, receive after the LTM unicast address message or LTR message that described CFD networking member device sends, judge whether to create the hardware table item of each member device MEP ID in corresponding described CFD networking, if NO, indication list item creation module creates corresponding hardware table item, and arranging is normal with the neighborhood of corresponding member device;
Described message sending module is further used for, if described message receiver module is received the LTM unicast address message that in described CFD networking, member device sends, send LTR message to sending the member device of LTM unicast address message in described CFD networking, described LTR message does not carry the MEP ID of described the first equipment.
10. an equipment, described equipment, for being communicated with the equipment to be added in error detection CFD networking without hardware detection ability, is characterized in that, this equipment comprises:
Message sending module, for sending link trace LTM multicast address message to the member device of described CFD networking, described LTM multicast address message carries rank and the MEP ID value of the maintaining end point MEP of this equipment, object MAC in described LTM multicast address message protocol data cell PDU field is multicast MAC, the bridge MAC that the source MAC in PDU field is this equipment;
Message receiver module, replys LTR message for receiving LTM unicast address message or the link trace of described CFD networking member device transmission; Wherein,
Described LTM unicast address message is LTM multicast address message that the member device in described CFD networking with hardware detection ability sends according to the described message sending module hardware table item of setting up the MEP ID of corresponding this equipment, arrange and the neighborhood of this equipment is to send after normal, the bridge MAC that object MAC in described LTM unicast address message PDU field is this equipment, described LTM unicast address message carries the MEP ID in the CFD networking that sends described LTM unicast address message with the member device of hardware detection ability;
Described LTR message is that the member device in described CFD networking without hardware detection ability sends according to the LTM multicast address message of described message sending module transmission, and described LTR message carries the MEP ID in the CFD networking that sends described LTR message without the member device of hardware detection ability.
11. equipment according to claim 10, is characterized in that, if described message receiver module is received the LTM unicast address message that in described CFD networking, member device sends,
Described message sending module is further used for, and sends LTR message to sending the member device of LTM unicast address message in described CFD networking, and described LTR message does not carry the MEP ID of described the first equipment.
12. 1 kinds of equipment, described equipment has the member device of hardware detection ability for being communicated with error detection CFD networking, and the first equipment is the equipment to be added of described CFD networking, it is characterized in that, and this equipment comprises:
Message receiver module, the link trace LTM multicast address message sending for receiving described the first equipment, described LTM multicast address message carries rank and the MEP ID value of the maintaining end point MEP of described the first equipment, object MAC in the protocol Data Unit PDU field of described LTM multicast address message is multicast MAC, and the source MAC in PDU field is the bridge MAC of described the first equipment;
List item creation module, for setting up the hardware table item of the MEP ID of corresponding described the first equipment, arranging with the neighborhood of described the first equipment is normal;
Message sending module, be used for sending LTM unicast address message to described the first equipment, while thering is hardware detection ability for described the first equipment, set up the hardware table item of corresponding this equipment MEP ID, object MAC in described LTM unicast address message PDU field is the bridge MAC of described the first equipment, and described LTM unicast address message carries the MEP ID of this equipment.
13. equipment according to claim 12, is characterized in that, this equipment further comprises:
Judge module, for described member device, receive after the LTM multicast address message of described the first equipment transmission, judge whether to create the hardware table item of corresponding described the first equipment MEP ID, if NO, indication list item creation module is set up the hardware table item of the MEP ID of corresponding described the first equipment, and arranging with the neighborhood of described the first equipment is normal.
14. 1 kinds of equipment, described equipment does not have the member device of hardware detection ability for being communicated with error detection CFD networking, and the first equipment is the equipment to be added of described CFD networking, it is characterized in that, and this equipment comprises:
Message receiver module, the link trace LTM multicast address message sending for receiving described the first equipment, described LTM multicast address message carries rank and the MEP ID value of the maintaining end point MEP of described the first equipment, object MAC in the protocol Data Unit PDU field of described LTM multicast address message is multicast MAC, and the source MAC in PDU field is the bridge MAC of described the first equipment;
Message sending module, for sending LTR message to described the first equipment, sets up the hardware table item of corresponding this equipment MEP ID while having hardware detection ability for described the first equipment, wherein said LTR message carries the MEP ID of this member device.
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