CN102215130A - CFD (connectivity fault detection) protocol configuration method and device thereof - Google Patents
CFD (connectivity fault detection) protocol configuration method and device thereof Download PDFInfo
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Abstract
The invention discloses a CFD (connectivity fault detection) protocol configuration method and a device thereof. The method comprises the followings steps: when maintenance domains with the same maintenance domain levels are configured for devices in a VLAN (virtual local area network), a primary device and each slave device respectively receive configuration orders of maintenance domain level, and the maintenance domain level of the device is configured according to the orders; the primary device in the VLAN transmits CC (continuity check) massages with the maintenance domain level, each slave device returns to the LT (link trace) massage after receiving the CC massages, wherein an intermediate device which receives the LT massage returns an LTR (link trace reply) massage to a transmitting party device of the LT massage; the primary device configures an outbound maintenance end point on a port which transmits CC massages, ports of slave devices which receive maintenance intermediate points and reply LTR massage exist, the maintenance intermediate point is configured on the port, and maintenance intermediate points are configured on other ports which have the same maintenance domain levels with the maintenance intermediate points; and other slave devices configure outbound maintenance end points on ports which receive CC massages and do not reply the LTR massages. By adopting the method and device provided by the invention, the auto configuration of CFD protocol can be realized.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of CFD protocol configuration method and device thereof.
Background technology
CFD is the abbreviation of Connectivity Fault Detection (connection error detection), follows CFM (Connectivity Fault Management the is communicated with mismanage) agreement of IEEE802.1ag and the Y.1731 agreement of ITU-T.It is based on VLAN (Virtual Local Area Network on a kind of two layers of link, VLAN) end-to-end OAM (Operations, Administration and Maintenance, Operations, Administration and Maintenance) mechanism is mainly used in and detects connectivity of link in double layer network, confirms fault and determines the position that fault takes place.
The notion that the CFD agreement is related to is simply introduced below.
(Maintenance Domain, MD): mainly be to be used for limiting carrying out the network range that is communicated with error detection work, maintenance field uses " maintaining end point " to limit the scope of maintenance field to maintenance field, distinguishes mutually with " safeguarding domain name " between the maintenance field.Position for accurate positioning failure network, maintenance field has been introduced the notion of maintenance field rank (Level), and maintenance field rank numerical value is big more, and the scope of this maintenance field is also big more, other maintenance field of less level can be nested in the maintenance field than large level, but both scopes can not be intersected.
Safeguard collection (Maintenance Association, MA): in a maintenance field, the user can be provided with one or more as required and safeguard collection, in general safeguard to collect and serve a VLAN, comprise a plurality of " maintenance points " in the maintenance field, safeguard to collect and distinguish mutually with " safeguarding domain name "+" safeguarding set name ".
Service Instance (Service Instance, SI): Service Instance is the set of Service Access Point, it belongs to certain the maintenance collection in certain maintenance field.The title of Service Instance identifies with an integer, and having represented a maintenance collection with appointment is the communication with detection work entity of object.The maintenance field at Service Instance place and maintenance collection have been determined Service Instance CFD protocol massages to be processed rank and affiliated VLAN.
Maintenance point (Maintenance Point, MP): maintenance point is configured on the device port in the maintenance field, be under the jurisdiction of and safeguard collection, be divided into " maintaining end point " (Maintenance association End Point, MEP) and " Maintenance Intermediate Point " (Maintenance association Intermediate Point, MIP).Wherein:
Maintaining end point: use MEP ID (ID must be an integer) to identify, be configured in the service specified example, be used for identifying the border of service object network.Maintaining end point place Service Instance has been determined the rank that maintaining end point is handled and E-Packeted.Maintaining end point is only accepted the maintenance field rank smaller or equal to self other message of level.Maintaining end point is divided into introversion (Inbound) and export-oriented (Outbound) end points again.Both difference are, interior is to send message by other ports on this equipment to the outside to end points, and export-oriented end points then is to send message by port own.
Maintenance Intermediate Point: Maintenance Intermediate Point is positioned at maintenance field inside, can not initiatively send the CFD protocol massages, and also not special sign is distinguished mutually, but can handle and respond the CFD protocol massages.Service Instance under the Maintenance Intermediate Point has been determined the VLAN attribute and the rank of this Maintenance Intermediate Point received packet.
Maintaining end point tabulation (MEP list): the maintaining end point tabulation is to limit the maintaining end point that institute might occur in the maintenance service example to gather, it has comprised the named range of all maintaining end points in the Service Instance, all maintaining end points on any distinct device in the same Service Instance, all must be included in this tabulation, and MEP ID each other can not repeat.If MEP finds source MEP not in the MEP of this end points tabulation according to the CFD message that receives, this message will be dropped.
The CFD function mainly comprises:
The continuity measuring ability: periodic maintaining end point in same Service Instance sends message.When receiving the CC message (Continuity Check Message, continuity detection messages) of far-end MEP for the first time, Local MEP can think that both set up neighbours, this far-end MEP is joined in the Remote MEP tabulation (being far-end MEP tabulation) of oneself.If there is continuous 3.5 messages transmission cycle not receive the far-end message later on, then think to connect and interrupt, and the output journal report.
The loopback detection function: this function class is like the Ping order.Send LB message (Loopback Message, loopback message) to specifying far-end from Local MEP, return a LBR (Loopback Reply, loopback is replied) message after far-end MEP receives to this Local MEP.
The link trace function: send LT (Link Trace, link trace) message from Local MEP, direction is a far-end MEP.When this message process MIP, all order MIP to reply LTR (Link Trace Reply, link trace an is replied) message that comprises MIP bridge MAC (Medium Access Control, medium access control) address to the source MEP that sends the LT message.So just can determine the path of this link.
Warning inhibit feature: in order to reduce the number of alarms that reports of finding network failure appearance later on, do not receive the CC message that the remote maintenance end points is sent in the transmission cycle at 3.5 CC messages, just begin periodically to send AIS (Alarm Indication Signal, alarm indication signal) message, sending direction is opposite with the CC message.Maintaining end point can suppress the fault warning of local terminal after receiving the AIS message, and continues to send the AIS message.If each maintaining end point has been received the CC message at 3.5 CC messages in the transmission cycle again, just stop to send the AIS message.
Fig. 1 shows a kind of group-network construction, and (Device Under Test DUT) is respectively DUT1～DUT4 to 4 equipment under tests wherein, and the pairing maintenance field scope of maintenance field rank MD3 is less than the maintenance span of maintenance field rank MD5.After 4 DUT among Fig. 1 were carried out the CFD protocol configuration, when the link between any DUT disconnected, the direct-connected DUT of this both link ends will alarm, and so just can judge the faulty link position, thereby has made things convenient for the maintenance management of double layer network.
Present employed CFD technology, CFD in whole network disposes and safeguards, all rely on manual configuration, promptly needing to adopt manual mode to carry out maintenance field title, maintenance field rank, affiliated VLAN, maintaining end point tabulation, CFD enables, alarms and configuration distributing such as suppress to enable, Ethernet enables to the overall situation, then also will be on the port of equipment configuring maintenance end points title, affiliated maintenance field, inside/outside to attribute, continuity enable, maintaining end point enables etc., more than configuration need be configured on all maintenance field equipment.Below listed some CFD protocol configuration orders commonly used, as shown in Figure 2, can go up these CFD protocol configuration orders of input at main frame (Host), and send to corresponding D UT by Host:
[DUT1]cfd?enable
This order is the CFD enable command, is used to enable the CFD function on the DUT1;
[DUT1]cfd?ais?enable
This order is the AIS enable command, is used to enable the AIS function on the DUT1;
[DUT1]cfd?md?MD_A?level?5
This order is maintenance field (MD) configuration order, is used to dispose the MD MD_A by name of DUT1, and the maintenance field rank is 5;
[DUT1]cfd?ma?MA_Amd?MD_A?vlan?100
This order is to safeguard collection (MA) configuration order, is used to dispose the MA MA_A by name of DUT1, and this MA belongs to maintenance field MD_A, serves VLAN vlan 100;
[DUT1]cfd?service-instance?1?md?MD_Ama?MA_A
This order is the Service Instance configuration order, and the Service Instance id that is used to dispose DUT1 is 1, belongs to maintenance field MD_A and safeguards collection MA_A;
[DUT1]cfd?meplist?1?to?8000?service-instance?1
This order is the order of maintaining end point list configuration, and the maintaining end point tabulation that is used to dispose DUT1 is meplist 1, and the named range of its maintaining end point is 1 to 8000, belongs to Service Instance service-instance 1;
[DUT1-P1]cfd?mep?1001?service-instance?1?inbound
This order be in the service endpoints to the attribute configuration order, in the service endpoints 1001 that is used for belonging on the P1 port with DUT1 Service Instance service-instance 1 is configured to service endpoints;
[DUT1-P1]cfd?mep?service-instance?1?mep?1001?enable
This order is the service endpoints enable command, is used to enable belong on the P1 port of DUT1 the service endpoints 1001 of Service Instance service-instance 1;
[DUT1-P1]cfd?ais-track?link-status?level?7
This order is an EAIS link rank configuration order, and it is 7 that the AIS that is used to dispose the P1 port of DUT1 follows the tracks of the Link State rank;
[DUT1-P1]cfd?ais-track?link-status?period?60
This order is an EAIS tracking cycle configuration order, and the cycle that the AIS that is used to dispose the P1 port of DUT1 follows the tracks of Link State is 60 seconds;
[DUT1-P1]cfd?ais-track?link-status?vlan?100
This order is the VLAN configuration order under the EAIS, and the VLAN that the EAIS that is used to dispose the P1 port of DUT1 follows the tracks of under the Link State is vlan 100.
For network in large scale, when using the CFD agreement, generally all devices can be divided into some maintenance fields, then at membership configuring maintenance territory rank and other configuration informations of these maintenance fields, this layoutprocedure is loaded down with trivial details, will cause CFD neighbours to set up if configuration error occurs in layoutprocedure.Under the situation big in network size, that equipment is more, the very difficult investigation reason that makes mistake.And when network topology change to be detected, the maintenance field rank is divided needs manually to plan again and distribute that corresponding configuration also needs to change in a large number.
As seen, need the simple CFD protocol configuration mechanism of a kind of implementation at present badly.
Summary of the invention
The invention provides a kind of CFD protocol configuration method and device thereof, in order to realize the self-configuring of CFD agreement to a certain extent.
CFD protocol configuration method provided by the invention, be applied to have the process of identical other maintenance field of maintenance field level for the equipment disposition of setting quantity in the assigned vlan, comprise an equipment that is positioned at the maintenance field border and is selected as main equipment in the equipment of described setting quantity, all the other are slave unit, and this method comprises:
Main equipment and each slave unit receive maintenance field rank configuration order respectively, and according to the maintenance field rank of this this equipment of command configuration;
Main equipment sends in described VLAN has other CC message of described maintenance field level, and each slave unit returns the LT message after receiving the CC message, and wherein, the intermediate equipment that receives the LT message is returned the LTR message to the transmit leg equipment of this LT message;
Main equipment is the export-oriented maintaining end point of configuration on the port that sends the CC message, there is the slave unit of receiving the LT message and replying the port of LTR message, configuring maintenance intermediate point on this port, and have configuring maintenance intermediate point on other other port of identical maintenance field level with this Maintenance Intermediate Point; Other slave unit was being received the CC message and was not being replied the export-oriented maintaining end point of configuration on the port of LTR message.
Communication equipment provided by the invention is applied to have the process of identical other maintenance field of maintenance field level for the equipment disposition of setting quantity in the assigned vlan, and this communication equipment comprises:
First configuration module is used to receive maintenance field rank configuration order, and according to the maintenance field rank of this this equipment of command configuration;
Message processing module (MPM) is used for being positioned at the maintenance field border and being selected as under the situation of main equipment at this equipment, sends to have other CC message of described maintenance field level in described VLAN; Under the situation of this equipment, after receiving the CC message that main equipment sends, return the LT message, and the transmit leg slave unit to this LT message returns the LTR message when receiving the LT message that other slave unit returns as slave unit;
Second configuration module, be used under the situation of this equipment as slave unit, if there is the port received the LT message and to reply the LTR message, configuring maintenance intermediate point thereon then, and have configuring maintenance intermediate point on other other port of identical maintenance field level with this Maintenance Intermediate Point; Otherwise, receiving the CC message and do not replying the export-oriented maintaining end point of configuration on the port of LTR message; Under the situation of this equipment as main equipment, the export-oriented maintaining end point of configuration on the port that sends the CC message.
Useful technique effect of the present invention comprises:
The present invention is divided into main equipment and slave unit with the equipment of pending CFD protocol configuration, dispose the maintenance field rank of each equipment by maintenance field rank configuration order, maintaining end point on each device port and Maintenance Intermediate Point configuration, then carry out self-configuring by the situation of main equipment transmission CC message and each slave unit response LT message and LTR message, thereby in prior art, all CFD protocol configuration operations all need the manual technical scheme of finishing to compare, and have realized the automatic configuration of CFD agreement to a certain extent.
Description of drawings
Fig. 1 is for having used the networking schematic diagram of CFD agreement in the prior art;
Fig. 2 is the implementation schematic diagram of CFD protocol configuration in the prior art;
The CFD protocol configuration schematic flow sheet that Fig. 3 provides for the embodiment of the invention;
The state machine state migration schematic diagram that Fig. 4 provides for the embodiment of the invention;
Fig. 5 A～Fig. 5 E is respectively the CFD agreement self-configuring process schematic diagram in the invention process;
The schematic diagram of the configuration end message that Fig. 6 provides for the embodiment of the invention;
The structural representation of the communication equipment that Fig. 7 provides for the embodiment of the invention.
Embodiment
The embodiment of the invention replaces the CFD protocol configuration mechanism of complete manual mode based on the CFD agreement, has realized the automatic configuration of CFD agreement to a certain extent, has solved network size when huge, the problem that the CFD protocol configuration is loaded down with trivial details.
Because CFD agreement itself just with the detection of connectivity problem that solves link, is having under the situation of loop, generally agreement is used together with STP (Shortest Path Tree, shortest path tree), and CFD message itself can be blocked by STP.Therefore, the problem because the CFD protocol massages that is caused by the on-premise network loop floods does not belong to the category of solution for embodiment of the invention.
The realization target of the embodiment of the invention is: on the equipment that constitutes maintenance field, by importing a small amount of (as 1 to 2) configuration order, for the networking of pending CFD protocol configuration is provided with maintenance field rank and binding VLAN, then, as main equipment, initiate CFD agreement self-configuring process with one of them equipment by main equipment.Finish the relevant configuration of whole maintenance field by layoutprocedure.Wherein, main equipment can be specified by the keeper, can select the maintenance field edge device as main equipment.
For realizing above-mentioned target, the overall procedure of the CFD protocol configuration that the embodiment of the invention provides can be as shown in Figure 3, in the time need disposing the maintenance field of a certain maintenance field rank (following is example with level 5) in particular vlan (following is example with VLAN 100), this flow process can comprise:
Step 301 sends configuration order respectively to these equipment that need be configured to level 5, so that these equipment can be according to this command configuration maintenance field rank, and can further bind VLAN 100.
In the specific implementation, can send maintenance field rank configuration order to these equipment by Host (promptly disposing client), so that these equipment disposition maintenance field ranks are level 5.Can also further pass through configuration order, make the port of these equipment and VLAN 100 bindings (before the port of these equipment with the situation of VLAN 100 bindings under, this step can be omitted).
In the specific implementation, can select the maintenance field edge device as main equipment, and issue the configuration initiation command to main equipment by the system manager.Main equipment is after receiving the configuration initiation command, and sending the maintenance field rank in VLAN 100 is the CC message of level 5.
Each slave unit returns the LT message after receiving the CC message, and wherein, the intermediate equipment that receives the LT message is returned the LTR message to the transmit leg equipment of this LT message.Slave unit at first judges whether to exist the port of receiving the LT message and replying the LTR message, if there is then configuring maintenance intermediate point on this port, and has configuring maintenance intermediate point on other other port of identical maintenance field level with this Maintenance Intermediate Point; If do not have the port of receiving the LT message and replying the LTR message on the slave unit, then receiving the CC message and do not replying the export-oriented maintaining end point of configuration on the port of LTR message; Main equipment is the export-oriented maintaining end point of configuration on the port that sends the CC message.
After this, main equipment and each slave unit can enable the CFD configuration on it, thereby finish the CFD protocol configuration.As can be seen, realized finishing the relevant configuration process of whole maintenance field by layoutprocedure by above flow process.
Further, in order to improve the accuracy and the reliability of configuration, main equipment can also carry out link trace to slave unit, and is confirming under the correct situation of slave unit link, just finally finish the CFD protocol configuration.Concrete, can carry out following improvement to above-mentioned flow process:
Main equipment generates the maintenance point tabulation according to the LT message that receives, and records the bridge MAC Address of the slave unit that returns the LT message in the maintenance point tabulation and arrives two layers of required hop count of this slave unit.Main equipment is tabulated according to maintenance point each slave unit in this tabulation is carried out link trace, and with the bridge MAC Address of each slave unit in the tabulation of tracking results and maintenance point with arrive two layers of required hop count of this slave unit and compare, if it is consistent, then enable the CFD configuration on this device port, thereby finish the CFD protocol configuration on the main equipment, end message is put in concurrent delivery; Otherwise, remove completed configuration in this CFD protocol configuration process on this device port, finish this CFD protocol configuration process, the cancellation message is put in concurrent delivery.If each slave unit receives the configuration end message, then enable the CFD configuration on the device port separately, thereby finish the CFD protocol configuration on the slave unit; If each slave unit receives configuration cancellation message, then remove completed configuration in this CFD protocol configuration process on this device port, and finish this CFD protocol configuration process.
Further, in order to improve the reliability of configuration, on above-mentioned process base, can also carry out following improvement:
Main equipment can be the CC message of level 5 setting duration t1 intercycle transmission maintenance field rank, can receive this CC message to guarantee each slave unit.Behind a period of time t2 after this sets duration t1 (t2 can less than t1), main equipment just begins according to maintenance point tabulation each slave unit in this tabulation to be carried out link trace, like this, can guarantee to a certain extent that on the one hand each equipment all can receive the CC message and carry out respective handling (as transparent transmission CC message and reply the LT message), on the other hand, t2 is set to can save less than t1 the time of CFD configuration flow.Slave unit is reaching when setting duration t3 from receiving first CC start of heading, on the corresponding port, dispose MIP or MEP according to aforementioned rule, concrete, if there is the port of receiving the LT message and replying the LTR message in slave unit, then on this port, dispose MIP, and dispose MIP having on other other port of identical maintenance field level with this MIP; Other slave unit was being received the CC message and was not being replied the export-oriented MEP of configuration on the port of LTR message.Wherein, t3 is not less than t1.
Further,, can interrupt configuration process when unusual occur, also can pass through transmitting order to lower levels mode interrupt configuration process as required in layoutprocedure for reasonability and the flexibility that improves configuration flow.
Concrete, the specific implementation that interrupt configuration process when unusual appears in layoutprocedure can be: if main equipment never receives the LT message that slave unit returns, then remove completed configuration in this CFD protocol configuration process on this device port, finish this CFD protocol configuration process, the cancellation message is put in concurrent delivery.After this, slave unit is removed completed configuration in this CFD protocol configuration process on this device port, and is finished this CFD protocol configuration process after receiving configuration cancellation message.
Specific implementation by transmitting order to lower levels mode interrupt configuration process can be: send the configuration mandatum cassatorium by Host to main equipment and each slave unit, after main equipment and each slave unit receive configuration cancellation message, remove completed configuration in this CFD protocol configuration process on this device port, and finish this CFD protocol configuration process.
In above-mentioned embodiment, need survey group network topological structure by the message interaction of CFD agreement itself.But because under the general state, equipment in the networking can not monitored the CFD protocol massages, at this situation, introduced state machine mechanism in the embodiment of the invention, distinguish " automatically before the configuration " of equipment, the state that " automatically in the configuration " and " configuration back automatically " waits each stage by different conditions, and introduce a series of message-handling processor systems at each state, realize CFD agreement self-configuring process.
In this state machine mechanism, the equipment in the networking may be in Inactive (non-activity), Main_Trial (main equipment trial), Main_Gather (main equipment collection), Slave_Feedback (slave unit feedback), Finish several states such as (finishing).Wherein: Main_Trial and Main_Gather are peculiar by main equipment, and main equipment is meant the promoter of whole self-configuring behavior here.In the self-configuring behavior, whole networking has only a main equipment, and other equipment are slave unit.Slave unit mainly is to obtain own positional information in networking according to the message that main equipment sends, so that the follow-up CFD protocol configuration of carrying out.
Referring to Fig. 4, for the state machine state that the embodiment of the invention provides is moved schematic diagram, wherein:
Equipment in the networking (main equipment and each slave unit) is in the Finsh state when usual, in the time need carrying out the CFD protocol configuration to the equipment in certain maintenance field, send configuration order by Host to these equipment, these equipment receive this order back and change Inactive state (shown in A1) over to from the Finsh state;
After main equipment enters the Inactive state, wait initiation command to be configured, and after receiving the configuration initiation command, enter Main_Trial state (shown in A2);
Main equipment sends the CC message after entering the Main_Trial state, and opening timing device Timer1 (timing length can be made as 60 seconds).Intercycle sends the CC message during timer Timer1 timing, and continues to monitor the LT message that slave unit is replied, and is receiving that first LT message enters Main_Gather state (shown in A3) later on;
Main equipment is set up maintenance point verification table under the Main_Gather state, the source address of the LT message that receives is collected in the maintenance point verification table.(be Timer1 overtime time) is maybe after a period of time of receiving last LT message (as 10 seconds) after main equipment is received last LT message, all slave units that write down in maintenance point verification table carry out link tracing, verify the table coupling if follow the trail of result and maintenance point, then enable the CFD configuration on this device port, send the configuration end message to all slave units, and enter Finish state (shown in A4); Otherwise, remove completed configuration in this CFD protocol configuration process on this device port, send configuration cancellation message, and change Inactive state (shown in A5) over to;
Slave unit enters Slave_Feedback state (shown in A6) from the Inactive state behind the CC message that issues in receiving assigned vlan;
Slave unit is under the Slave_Feedback state, for replying the LT message respectively behind each the CC message that receives, and opening timing device Timer2 (timing length can be made as 60 seconds) when receiving first CC message, and after timer Timer2 is overtime, begin to carry out CFD agreement self-configuring (as configuring maintenance intermediate point, maintaining end point etc.);
Slave unit enables CFD configuration on the device port separately behind the end message receiving configuration, and enters Finish state (shown in A7);
Slave unit is removed completed configuration in this CFD protocol configuration process on this device port, and is entered Inactive state (shown in A5) after receiving configuration cancellation message.
Further, if in CFD agreement self-configuring process, main equipment or slave unit are received configuration mandatum cassatorium (this configuration mandatum cassatorium can be issued on main equipment or the slave unit by Host), then change Inactive state (shown in A5) over to from current state.Main equipment can also not received when timer Timer1 is overtime yet and is changed Inactive state (shown in A5) over to from current state under the situation of the LT message that slave unit returns; After being carried out link trace, slave unit finds that perhaps tracking results and maintenance point verification table do not match, and change Inactive state (shown in A5) over to from current state.
In order to further describe the implementation procedure of the embodiment of the invention, be that example is described CFD agreement self-configuring process with the group-network construction shown in Fig. 5 A below.Shown in Fig. 5 A, all of the port of DUT1～5 all belongs to VLAN 100, and when needs were configured to DUT1～5 identical maintenance field rank, its CFD self-configuring flow process comprised:
At first, issue the order of CFD protocol configuration by Host (being CFD configuration client) respectively to DUT1～5, by VLAN 100 and the maintenance field class 5 of this order under configuration CFD on DUT1～5, the maintenance field title, safeguard that set name claims can select (promptly the mode by configuration order is configured on DUT1～5) in several titles of reserving by system with the Service Instance title, perhaps generate automatically and (can on each equipment, define the maintenance field title in advance by each equipment, safeguard that set name claims the naming rule with the Service Instance title, as naming according to the maintenance field grade, may be defined as MD_n as the maintenance field title, wherein n is a maintenance field grade numerical value).DUT1～5 enter the Inactive state from current Finish state after receiving the order of CFD protocol configuration, and monitor the CC message on the port that 100 times all states of VLAN are Up.
After this, enter automatic configuration phase:
Phase?1
The network manager just on certain edge device of this maintenance field, issues the self-configuring initiation command at DUT1.At this moment, DUT1 enters the Main_Trial state as main equipment, and opening timing device Timer1, all of the port of DUT1 under VLAN 100, and maintenance field rank of (as 1 second) transmission is 5 CC message at set intervals.Shown in Fig. 5 B.The timing length of timer Timer1 can be provided with according to the quantity of DUT in the group-network construction, the many more timing lengths of DUT quantity are long more, the concrete setting of timing length should be able to guarantee this section in the period main equipment can obtain the bridge MAC Address of each equipment on the whole piece link and arrive the needed two layers of hop count of DUT1, can be made as 60 seconds as the timing length of Timer1.
Phase?2
For each equipment among DUT2～DUT5, as slave unit when listening port is received the CC message for the first time, (timing length is no less than the duration of Timer1 to the opening timing device, can equate with the timing length of Timer1, as being made as 60 seconds, the timer of DUT2～DUT5 correspondence is Timer2～5), enter the Slave_Feedback state from the Inactive state, and this CC message of transparent transmission in VLAN 100 is replied a LT message to the source address of CC message then.Whenever receive a CC message later on, just reply a LT message, shown in Fig. 5 C to source address.Receive that the intermediate equipment of LT message can be replied a LTR message, shown in Fig. 5 D therebetween.
Phase?3
DUT1 continue to monitor the LT message in during timer Timer1 timing on VLAN 100.After timer Timer1 was overtime, DUT1 just can obtain the bridge MAC Address of each equipment on the whole piece link and arrive the needed two layers of hop count of DUT1, verifies table thereby generate maintenance point.If DUT1 does not receive any LT message during timer Timer1 timing, then return the information of CFD self-configuring failure, and revert to the Inactive state again to Host.
Phase?4
For each equipment among DUT2～DUT5, during corresponding timer (Timer2～5) timing, monitor the LT message among the inherent VLAN 100, and when listening to the LT message, return the LTR message.After corresponding timer (Timer2～5) is overtime, at first all received the port and the ports of replying the LTR message of LT message to relevant device in the meantime, all be configured to Maintenance Intermediate Point (MIP) automatically, and dispose MIP having on other other port of identical maintenance field level with this MIP on this equipment, other slave unit is being received the CC message then, and does not reply configuration export-oriented maintaining end point (MEP) on the port of LTR message.For example, DUT3_Eth1/1, DUT3_Eth1/2 and DUT4_Eth1/1 received the LT message and replied the LTR message, therefore be configured as MIP, and DUT3_Eth1/0 and DUT4_Eth1/0 are configured to MIP; Owing to do not have the port of receiving the LT message and replying the LTR message on the DUT5, and only existence received the CC message but did not reply the port DUT5_Eth1/0 of LTR message, then DUT5_Eth1/0 was configured to MEP.
All export-oriented MEP are configured according to MD, the MA and the SI that generate automatically or select automatically, and stop the CC message is replied the LT message.
Phase?5
On DUT1, after receiving first LT message and replying the LTR message, start timer Timer10, receive replacement timer Timer10 behind the LT message at every turn, after the timing duration of timer Timer10 reaches setting duration (as 10 seconds), maintenance point is verified all LT message source MAC Address (being the bridge MAC Address of equipment) of table and initiate link tracing, and link tracing result and the comparison of maintenance point verification table (have been comprised the bridge MAC of slave unit and the jumping figure that this node arrives main equipment DUT1 in the verification table.After DUT1 initiates link tracing, can receive the LTR message that carries the residue ttl value, in the verification table, search the source MAC of LTR message then, after finding, see in this LTR message ttl value whether with the verification table in this slave unit to arrive the jumping figure of main equipment DUT1 corresponding), if consistent, then send configuration and finish message to miscellaneous equipment, self change the Finish state then over to.All miscellaneous equipments receive after message is finished in the CFD configuration and enable CFD that beginning is set up neighbours with other MEP.If comparison result is inconsistent, then send configuration cancellation message, restart configuration.The purpose of opening timer Timer10 is to guarantee that DUT1 sends the process of CC message during the timing of Temer1, can receive that all other DUT (are the LT messages of DUT2～DUT5) return here.Send under the situation of a CC message as, DUT1 per second in 60 seconds, after 70 seconds, should be able to receive the LT message that DUT2～DUT5 returns, thereby timing duration that can timer Timer10 is set to 10 seconds.
Shown in Fig. 5 E, DUT1_Eth1/0, DUT2_Eth1/0 and DUT5_Eth1/0 finally generate export-oriented MEP, continue to send the CC message between the three mutually and set up neighbours, and CFD protocol configuration so far is all finished.The interruption of link all can make a pair of neighbours report to the police arbitrarily, with the warning neighbours.
Further, in the self-configuring process, put mandatum cassatorium if be transported to up and down at DUT1 by Host, then main equipment DUT1 issues a LT message that is used to indicate the cancellation configuration immediately.Miscellaneous equipment directly finishes the self-configuring process after being the LT message of main equipment bridge MAC at the source MAC of receiving, and removes all and dispose relevant information automatically, sends the LTR message of a response after finishing, and each equipment state is got back to the inactive state.
Above flow process is that example is described to select the being in maintenance field edge device as main equipment, and in this case, the port that main equipment sends the CC message can directly be used as export-oriented MEP.The equipment that can certainly select other position is as main equipment, in such cases, on main equipment, also need MIP (concrete set-up mode is the same) to be set according to the situation that receives the LT message and return the LTR message, as can reach at the timing duration of timer Timer10 set duration after, carry out the MIP configuration before the link tracing.
Involved self-configuring end message in the embodiment of the invention can obtain by common CFD message is necessarily revised, the end message when being used as self-configuring and finishing.
As shown in Figure 6, existing CFD message format is as follows:
Destination MAC address (destination-mac address): multicast address (CCM, LTM) 0180-c200-0035;
Source MAC address (source MAC): this machine bridge MAC Address;
CFM EtherType (CFM ethernet type): 8902 (OAM frames);
MALevel (MA rank): consistent with this machine place maintenance field, scope is 0～7.
Source MAC address value in the self-configuring end message in the embodiment of the invention is 0000-0000-0000, and other field contents can be consistent with existing CC message.
By above description as can be seen, the embodiment of the invention has realized the self-configuring of CFD agreement to a certain extent, as long as every equipment is carried out the layoutprocedure that 1 to 2 configuration just can be finished a more complete maintenance field.In this self-configuring process, all concrete configurations are finished automatically by equipment substantially, and the attendant only needs the maintenance field rank of designated equipment, and issue the self-configuring initiation command, so just the order of the reasonable solution configuration distributing of energy is loaded down with trivial details, occurs the problem of configuration error easily.The CFD agreement self-configuring mode of the embodiment of the invention is to the not influence of maintenance function of CFD configuration, and the equipment that possesses automatic configuration can join in the maintenance field of manual mode configuration.From whole network, the maintenance field that generates is complete and reasonable automatically, and can free as required maintenance field be divided.
Based on identical technical conceive, the embodiment of the invention also provides a kind of communication equipment that can be applicable to above-mentioned flow process.
Referring to Fig. 7, the structural representation of the communication equipment that provides for the embodiment of the invention.As shown in the figure, this communication equipment can comprise:
First configuration module 701 is used to receive maintenance field rank configuration order, and according to the maintenance field rank of this this equipment of command configuration;
Message processing module (MPM) 702 is used for being positioned at the maintenance field border and being selected as under the situation of main equipment at this equipment, sends to have other CC message of described maintenance field level in described VLAN; Under the situation of this equipment, behind the CC message that receives the main equipment transmission, return the LT message, and return the LTR message to the transmit leg slave unit of this LT message as slave unit;
Second configuration module 703, be used under the situation of this equipment as slave unit, if there is the port received the LT message and to reply the LTR message, configuring maintenance intermediate point thereon then, and have configuring maintenance intermediate point on other other port of identical maintenance field level with this Maintenance Intermediate Point; Otherwise, receiving the CC message and do not replying the export-oriented maintaining end point of configuration on the port of LTR message; Under the situation of this equipment as main equipment, the export-oriented maintaining end point of configuration on the port that sends the CC message.
Above-mentioned communication equipment also can comprise:
Maintenance point list block 704, be used under the situation of this equipment as main equipment, the LT message that receives according to message processing module (MPM) 702 generates the maintenance point tabulation, records the bridge MAC Address of the slave unit that returns the LT message in the described maintenance point tabulation and arrives two layers of required hop count of this slave unit;
Link detecting module 705, be used under the situation of this equipment as main equipment, according to described maintenance point tabulation each slave unit in this tabulation is carried out link trace, and bridge MAC Address and two layers of required hop count of this slave unit of arrival of each slave unit in tracking results and the tabulation of described maintenance point are compared;
The 3rd configuration module 706 is used under the situation of this equipment as main equipment, when the comparative result of link detecting module 705 is consistent, enables the CFD configuration on this device port, and end message is put in concurrent delivery; Under the situation of this equipment, enable CFD configuration on the device port separately behind the end message receiving configuration as slave unit.
Above-mentioned communication equipment also can comprise: module 707 is removed in configuration, be used under the situation of this equipment as main equipment, if if the comparison of link detecting module 705 is inconsistent, then remove completed configuration in this CFD protocol configuration process on this device port, the cancellation message is put in concurrent delivery; Under the situation of this equipment, after receiving configuration cancellation message, remove completed configuration in this CFD protocol configuration process on this device port as slave unit.
In the above-mentioned communication equipment, configuration is removed module 707 and also be can be used for: under the situation of this equipment as main equipment, if do not receive the LT message that slave unit returns, then remove completed configuration in this CFD protocol configuration process on this device port, the cancellation message is put in concurrent delivery; Under the situation of this equipment, after receiving configuration cancellation message, remove completed configuration in this CFD protocol configuration process on this device port as slave unit; Perhaps, under the situation of this equipment,, then remove completed configuration in this CFD protocol configuration process on this device port if receive the configuration cancellation message that the configuration client sends as main equipment or slave unit.
In the above-mentioned communication equipment, message processing module (MPM) 702 can specifically be used for, and under the situation of this equipment as main equipment, sends other CC message of described maintenance field level at the first duration intercycle; Link detecting module 705 can specifically be used for: according to the tabulation of described maintenance point each slave unit of this tabulation is carried out link trace behind second duration; Second configuration module 703 can specifically be used for: under the situation of this equipment as slave unit, receiving first CC start of heading when arriving the 3rd duration, if there is the port of receiving the LT message and replying the LTR message in this equipment, configuring maintenance intermediate point on this port then, and have configuring maintenance intermediate point on other other port of identical maintenance field level with this Maintenance Intermediate Point; Otherwise, receiving described CC message and do not replying the export-oriented maintaining end point of configuration on the port of LTR message.
In sum, the embodiment of the invention is to all devices in the maintenance field, it is pre-configured only to need a small amount of configuration order just can finish pre-intelligent networking, and then through initiate intelligent adaptive networking detection of connectivity at a main equipment, finishes building of whole network environment at last.And the embodiment of the invention has been avoided the problem of the association attributes configuration error that manual configuration caused to a certain extent, and can be further guarantees the validity that disposes by detection of connectivity.In addition, when change of network environment, only scheme need be re-executed, just the current network environment can be adapted to automatically.
Through the above description of the embodiments, those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential general hardware platform, can certainly pass through hardware, but the former is better execution mode under a lot of situation.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words can embody with the form of software product, this computer software product is stored in the storage medium, comprise that some instructions are with so that a station terminal equipment (can be mobile phone, personal computer, server, the perhaps network equipment etc.) carry out the described method of each embodiment of the present invention.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be looked protection scope of the present invention.
Claims (10)
1. one kind is communicated with error detection CFD protocol configuration method, it is characterized in that, be applied to specifying the equipment disposition of setting quantity in the virtual LAN VLAN to have the process of identical other maintenance field of maintenance field level, comprise an equipment that is positioned at the maintenance field border and is selected as main equipment in the equipment of described setting quantity, all the other are slave unit, and this method comprises:
Main equipment and each slave unit receive maintenance field rank configuration order respectively, and according to the maintenance field rank of this this equipment of command configuration;
Main equipment sends in described VLAN has other continuity detection of described maintenance field level CC message, return link was followed the tracks of the LT message after each slave unit received the CC message, wherein, the intermediate equipment that receives the LT message is replied the LTR message to the transmit leg equipment return link tracking of this LT message;
Main equipment is the export-oriented maintaining end point of configuration on the port that sends the CC message, there is the slave unit of receiving the LT message and replying the port of LTR message, configuring maintenance intermediate point on this port, and have configuring maintenance intermediate point on other other port of identical maintenance field level with this Maintenance Intermediate Point; Other slave unit was being received the CC message and was not being replied the export-oriented maintaining end point of configuration on the port of LTR message.
2. the method for claim 1 is characterized in that, also comprises:
Main equipment generates the maintenance point tabulation according to the LT message that receives, and records the bridge MAC Address of the slave unit that returns the LT message in the described maintenance point tabulation and arrives two layers of required hop count of this slave unit;
Main equipment carries out link trace according to described maintenance point tabulation to each slave unit in this tabulation, and with the bridge MAC Address of each slave unit in the tabulation of tracking results and described maintenance point with arrive two layers of required hop count of this slave unit and compare, if it is consistent, then enable the CFD configuration on this device port, end message is put in concurrent delivery;
After each slave unit receives the configuration end message, enable the CFD configuration on the device port separately.
3. method as claimed in claim 2 is characterized in that, also comprises:
Main equipment is with the bridge MAC Address of each slave unit in the tabulation of tracking results and described maintenance point with when arriving two layers of required hop count of this slave unit and comparing, if it is if inconsistent, then remove completed configuration in this CFD protocol configuration process on this device port, the cancellation message is put in concurrent delivery;
Each slave unit is removed completed configuration in this CFD protocol configuration process on this device port after receiving configuration cancellation message.
4. the method for claim 1 is characterized in that, also comprises:
If main equipment does not receive the LT message that slave unit returns, then remove completed configuration in this CFD protocol configuration process on this device port, the cancellation message is put in concurrent delivery; Slave unit is removed completed configuration in this CFD protocol configuration process on this device port after receiving configuration cancellation message; Perhaps
If main equipment and slave unit receive the configuration cancellation message that the configuration client sends, then remove completed configuration in this CFD protocol configuration process on this device port.
5. as the described method of one of claim 2-4, it is characterized in that main equipment sends other CC message of described maintenance field level at the first duration intercycle, and behind second duration, each slave unit in this tabulation is carried out link trace according to described maintenance point tabulation;
When slave unit arrives the 3rd duration from receiving first CC start of heading, if there is the port of receiving the LT message and replying the LTR message in this equipment, configuring maintenance intermediate point on this port then, and have configuring maintenance intermediate point on other other port of identical maintenance field level with this Maintenance Intermediate Point; Otherwise, receiving described CC message and do not replying the export-oriented maintaining end point of configuration on the port of LTR message;
Wherein, second duration is greater than first duration, and the 3rd duration is not less than first duration.
6. a communication equipment is characterized in that, is applied to specifying the equipment disposition of setting quantity in the virtual LAN VLAN to have the process of identical other maintenance field of maintenance field level, and this communication equipment comprises:
First configuration module is used to receive maintenance field rank configuration order, and according to the maintenance field rank of this this equipment of command configuration;
Message processing module (MPM) is used for being positioned at the maintenance field border and being selected as under the situation of main equipment at this equipment, sends to have other continuity of described maintenance field level and detect the CC message in described VLAN; Under the situation of this equipment as slave unit, return link is followed the tracks of the LT message after receiving the CC message that main equipment sends, and follows the tracks of to the transmit leg slave unit return link of this LT message when receiving the LT message that other slave unit returns and reply the LTR message;
Second configuration module, be used under the situation of this equipment as slave unit, if there is the port received the LT message and to reply the LTR message, configuring maintenance intermediate point thereon then, and have configuring maintenance intermediate point on other other port of identical maintenance field level with this Maintenance Intermediate Point; Otherwise, receiving the CC message and do not replying the export-oriented maintaining end point of configuration on the port of LTR message; Under the situation of this equipment as main equipment, the export-oriented maintaining end point of configuration on the port that sends the CC message.
7. communication equipment as claimed in claim 6 is characterized in that, also comprises:
The maintenance point list block, be used under the situation of this equipment as main equipment, the LT message that receives according to described message processing module (MPM) generates the maintenance point tabulation, records the bridge MAC Address of the slave unit that returns the LT message in the described maintenance point tabulation and arrives two layers of required hop count of this slave unit;
The link detecting module, be used under the situation of this equipment as main equipment, according to described maintenance point tabulation each slave unit in this tabulation is carried out link trace, and bridge MAC Address and two layers of required hop count of this slave unit of arrival of each slave unit in tracking results and the tabulation of described maintenance point are compared;
The 3rd configuration module is used under the situation of this equipment as main equipment, when the comparative result of described link detecting module is consistent, enables the CFD configuration on this device port, and end message is put in concurrent delivery; Under the situation of this equipment, enable CFD configuration on the device port separately behind the end message receiving configuration as slave unit.
8. communication equipment as claimed in claim 7 is characterized in that, also comprises:
Module is removed in configuration, is used under the situation of this equipment as main equipment, if if the comparison of described link detecting module is inconsistent, then remove completed configuration in this CFD protocol configuration process on this device port, the cancellation message is put in concurrent delivery; Under the situation of this equipment, after receiving configuration cancellation message, remove completed configuration in this CFD protocol configuration process on this device port as slave unit.
9. communication equipment as claimed in claim 6, it is characterized in that, described configuration is removed module and also is used for, under the situation of this equipment as main equipment, if do not receive the LT message that slave unit returns, then remove completed configuration in this CFD protocol configuration process on this device port, the cancellation message is put in concurrent delivery; Under the situation of this equipment, after receiving configuration cancellation message, remove completed configuration in this CFD protocol configuration process on this device port as slave unit; Perhaps, under the situation of this equipment,, then remove completed configuration in this CFD protocol configuration process on this device port if receive the configuration cancellation message that the configuration client sends as main equipment or slave unit.
10. as the described communication equipment of one of claim 6-9, it is characterized in that described message processing module (MPM) specifically is used for, under the situation of this equipment, send other CC message of described maintenance field level at the first duration intercycle as main equipment;
Described link detecting module specifically is used for, and according to described maintenance point tabulation each slave unit in this tabulation is carried out link trace behind second duration;
Second configuration module specifically is used for, under the situation of this equipment as slave unit, receiving first CC start of heading when arriving the 3rd duration, if there is the port of receiving the LT message and replying the LTR message in this equipment, configuring maintenance intermediate point on this port then, and have configuring maintenance intermediate point on other other port of identical maintenance field level with this Maintenance Intermediate Point; Otherwise, receiving described CC message and do not replying the export-oriented maintaining end point of configuration on the port of LTR message;
Wherein, second duration is greater than first duration, and the 3rd duration is not less than first duration.
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