CN102315970A - Data center bridging parameter configuration method, system and network equipment - Google Patents
Data center bridging parameter configuration method, system and network equipment Download PDFInfo
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Abstract
The invention provides a data center bridging parameter configuration method, a system and network equipment. The method comprises the steps that: first equipment receives parameter configuration messages sent by other equipment except the first equipment, and the parameter configuration messages comprise priority level information and data center bridging (DCB) parameters requiring the consistent configuration; the first equipment determines the parameter configuration messages with the specified priority level information into root equipment parameter configuration messages according to the priority level information in the local parameter configuration messages and the priority level information in the received parameter configuration messages; and the first equipment carries out local configuration according to the DCB parameters requiring the consistent configuration in the equipment parameter configuration messages. In the technical scheme provided by the data center bridging parameter configuration method, all equipment can be configured according to the same DCB parameters, the consistent configuration of the DCB parameters requiring the consistent configuration is realized, in addition, the manual configuration by managers is not needed in the whole process, the automatic configuration of the DCB parameters in the data center is realized, and the configuration efficiency of the DCB parameters is improved.
Description
Technical field
The present invention relates to the network communications technology, relate in particular to a kind of data center bridge joint (Data Center Bridging; Abbreviate as: DCB) method for parameter configuration, system and the network equipment.
Background technology
Usually can there be following three kinds of flows in data center: memorying data flow, high-performance calculation stream and Ethernet stream.The requirement of different data streams is different, and for example: memorying data flow requires no packet loss, and high-performance calculation stream requires low the delay, and Ethernet stream allows certain packet loss and time delay.Conventional data centers uses three kinds of networks of different type to carry different data flow, to satisfy the requirement of every kind of data flow.This method is suitable for small-sized data center; But expansion along with data center's scale; The network that moves three types simultaneously is not a kind of solution of economy, so the scheme of three kinds of different types of data streams of unified employing Ethernet bearing occurred, is called as the uniform data Center Scheme.
The demands of different of three kinds of different types of data streams is satisfied through the definition additional mechanism in the uniform data center.For example: (the Institute of Electrical and Electronics Engineers of IEEE-USA; Abbreviate as: IEEE) defined following standard: strengthen transmission and select (Enhanced Transmission Selection; Abbreviate as: ETS), based on flow control (the Priority-based Flow Control of priority; Abbreviate as: PFC) with data center's bridge exchange agreement (Data Center Bridging Capability Exchange Protocol; Abbreviate as: DCBX) etc.Wherein, ETS is used to avoid a kind of extensive flow of data stream type to burst influences the data flow of other types, for different types of data flows provides minimum bandwidth guarantee.For one type data flow, only under the situation that the bandwidth of other types data flow does not take, could use the extra bandwidth of distributing outside the bandwidth, this regulation can make polytype data flow harmonious coexistence in consolidated network.PFC is used for satisfying three types of data flow when Ethernet coexists, and guarantees that memorying data flow does not have packet loss, and other two types of data flow are not had influence.DCBX is a kind of based on Link Layer Discovery Protocol (Link Layer Discovery Protocol; Abbreviate as: Extended Protocol LLDP) is used for consulting automatically and DCB ability parameters such as configuration PFC, ETS and characteristic protocol massages priority at uniform data equipment room in the heart.
Wherein, DCBX is through learning neighbours' DCB ability configuration information, and neighbours' DCB parameter and local DCB parameter compared analysis, thereby when inequality, consults to realize the consistency error detection and the configuration synchronization of two ends DCB parameter configuration automatically.But; Because DCBX uses unidirectional protocol LLDP to realize; Only exchange configuration and management information, can't realize that the neighbours of striding equipment find, so DCBX is mainly used on the equipment of edge access layer with neighbours; Be used for guiding the terminal server that is connected with edge access layer equipment to carry out the automatic configuration of DCB parameter, and the DCB parameter of two equipment of striding equipment (for example two station terminal servers) can't realize automatic synchronous configuration through DCBX.In addition; If DCB parameter that should be identical between each equipment in the network is different; Will cause the failure of uniform data center construction, therefore, in order to guarantee the uniform data center construction; Still the DCB parameter that needs each equipment of keeper's manual configuration, with realize whole network should be identical the consistent of DCB parameter dispose.But the efficient of keeper's manual configuration DCB parameter is lower, is unfavorable for the quick structure at uniform data center.
Summary of the invention
The present invention provides a kind of data center bridge joint method for parameter configuration, system and the network equipment, needs the problem of keeper's manual configuration DCB parameter in order to solve prior art, realizes the automatic configuration of DCB parameter, improves the allocative efficiency of DCB parameter.
The present invention provides a kind of bridge joint DCB of data center method for parameter configuration, comprising:
First equipment receives the parameter configuration message that other equipment except that said first equipment send, and said parameter configuration message comprises the consistent DCB parameter that disposes with needs of precedence information;
Said first equipment is according to the precedence information in the precedence information in the local parameter configuration message and all parameter configuration messages that receive, and the parameter configuration message of confirming to carry assigned priority information is a root device parameter configuration message;
Said first equipment carries out this locality configuration according to the consistent DCB parameter that disposes of the needs in the said root device parameter configuration message.
The present invention provides a kind of network equipment, comprising:
Receiver module is used to receive the parameter configuration message that other network equipments except that the said network equipment send, and said parameter configuration message comprises the consistent DCB parameter that disposes with needs of precedence information;
Determination module is used for according to the precedence information in the precedence information of local parameter configuration message and all parameter configuration messages that receive, and the parameter configuration message of confirming to carry assigned priority information is a root device parameter configuration message;
Local configuration module is used for carrying out this locality configuration according to the consistent DCB parameter that disposes of the needs of said root device parameter configuration message.
The present invention provides a kind of bridge joint DCB of data center parameter configuring system, comprising: arbitrary network equipment provided by the invention.
The bridge joint DCB of data center method for parameter configuration of the present invention, system and the network equipment; First equipment in the data center receives the parameter configuration message that other equipment send; The parameter configuration message of from local parameter configuration message and all parameter configuration messages of receiving, selecting assigned priority information according to the precedence information in the parameter configuration message is as root device parameter configuration message, and carries out this locality according to the DCB parameter in the root device parameter configuration message and dispose.Adopt technical scheme of the present invention; The parameter configuration message that all devices in the data center all can be selected to carry assigned priority information according to the precedence information in the parameter configuration message is as root device parameter configuration message; All devices is configured according to identical DCB parameter, needing to have realized consistent the consistent of DCB parameter that disposes to dispose, and whole process does not need keeper's manual configuration; Realize the automatic configuration of DCB parameter in the data center, improved the allocative efficiency of DCB parameter.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do one to the accompanying drawing of required use in embodiment or the description of the Prior Art below introduces simply; Obviously, the accompanying drawing in describing below is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
The flow chart of the DCB method for parameter configuration that Fig. 1 provides for one embodiment of the invention;
The flow chart of the DCB method for parameter configuration that Fig. 2 provides for another embodiment of the present invention;
Fig. 3 A is a kind of partial structurtes sketch map of the data center of one embodiment of the invention use;
Fig. 3 B is the another kind of partial structurtes sketch map of the data center of one embodiment of the invention use;
The structural representation of the network equipment that Fig. 4 provides for one embodiment of the invention;
The structural representation of the network equipment that Fig. 5 provides for another embodiment of the present invention.
Embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the invention clearer; To combine the accompanying drawing in the embodiment of the invention below; Technical scheme in the embodiment of the invention is carried out clear, intactly description; Obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
The flow chart of the DCB method for parameter configuration that Fig. 1 provides for one embodiment of the invention.As shown in Figure 1, the DCB parameter configuration of present embodiment comprises:
First equipment in the present embodiment can be any equipment in the data center, for example be in the data center edge access switch, be positioned at the core switch on access switch upper strata etc.
In the practical implementation process; In the starting stage; Need the DCB parameter of consistent configurations (being identical configuration) in all devices in the data center encapsulates oneself in the parameter configuration message precedence information and the own data center that is disposed, then the parameter configuration message is sent to other equipment except that oneself.Simultaneously, as far as every equipment in the data center, can promptly receive the parameter configuration message that other equipment send as first equipment of present embodiment again.Usually, need the DCB parameter of identical configuration mainly to comprise in the data center: ETS, PFC, specific protocol priority of messages etc., present embodiment is described to need the consistent DCB of configuration parameter can comprise one of them or its combination in any.Wherein, the DCB method for parameter configuration of present embodiment is particularly useful for the configuration to the specific protocol priority of messages.
Wherein, every equipment uses identical precedence information, for example can be to be the priority facility of every equipment manual configuration, medium access control (the Medium Access Control of every equipment itself by the keeper in advance; Abbreviate as: MAC) wherein any or its combination such as address.
Wherein, assigned priority information can be limit priority information.A kind of execution mode of definite root device parameter configuration message comprises: first equipment compares precedence information in the local parameter configuration message and precedence information in the parameter configuration message that receives; For the precedence information parameter configuration message lower than the precedence information in the local parameter configuration message, first equipment abandons it; For the precedence information parameter configuration message higher than the precedence information in the local parameter configuration message, first equipment is temporary with it.Then, first equipment is done further comparison with the precedence information in all parameter configuration messages of keeping in, and selects the highest parameter configuration message of precedence information, is root device parameter configuration message.Wherein, when the precedence information in the parameter configuration message that the precedence information in the local parameter configuration message receives than all is all high, then first equipment with the local parameter configuration message as root device parameter configuration message.
In various embodiments of the present invention, the parameter configuration message that precedence information is the highest is called root device parameter configuration message, and will be called root device with root device parameter configuration message corresponding equipment.This shows that the method for present embodiment is actual to be in all devices of data center, to determine an equipment as root device, all non-root devices receive also the DCB parameter configuration of root device synchronously.Wherein, confirming by the precedence information decision of root device confirmed different equipment as root device thereby allow to pass through to change precedence information, and visible present embodiment also has the advantage of flexible configuration.
In the execution mode of above-mentioned definite root device parameter configuration message, the highest parameter configuration message of the first choice of equipment precedence information is as root parameter configuration message, but is not limited to this, can also confirm root device parameter configuration message through other multiple modes.For example: it is that the parameter configuration message of certain occurrence of making an appointment is as root device parameter configuration message that first equipment can be selected precedence information.Again for example: first equipment can also select the minimum parameter configuration message of precedence information as root device parameter configuration message.
After determining root device parameter configuration message, first equipment carries out this locality configuration according to the DCB parameter in the root device parameter message.For example: when the DCB parameter comprised the information of supporting ETS, first equipment disposition was opened local ETS function.Again for example: when the DCB parameter comprised the information of supporting PFC, first equipment disposition was opened local PFC function.
Wherein,, all adopt in a like fashion and determine root device parameter configuration message, that is to say that the root device parameter configuration message that every equipment is determined is identical according to precedence information as far as every equipment in the data center.When all devices in the data center all carries out this locality configuration according to the DCB parameter in the root device parameter configuration message after, need the DCB parameter of identical configuration just to realize consistent configuration in the whole data center.
The DCB method for parameter configuration of present embodiment; First equipment in the data center receives the parameter configuration message that other equipment send; The parameter configuration message of from local parameter configuration message and all parameter configuration messages of receiving, selecting assigned priority information according to the precedence information in the parameter configuration message is as root device parameter configuration message, and carries out this locality according to the DCB parameter in the root device parameter configuration message and dispose.After all devices in the data center all selects the parameter configuration message of assigned priority information to carry out this locality configuration as root device parameter configuration message and according to identical root device parameter configuration message; Need the DCB parameter of identical configuration will realize consistent the configuration on all devices; Whole process does not need keeper's manual configuration; Realize the automatic configuration of DCB parameter in the data center, improved the allocative efficiency of DCB parameter.
The flow chart of the DCB method for parameter configuration that Fig. 2 provides for another embodiment of the present invention.As shown in Figure 2, the method for present embodiment comprises:
Wherein, step 201 and step 202 can repeat no more at this referring to the description of step 101 and step 102.
After selecting root device parameter configuration message, first equipment carries out this locality configuration according to the DCB parameter in the root device parameter configuration message, thus realize should be identical in the whole data center the consistent of DCB parameter dispose.Wherein, When the root device parameter configuration message that goes out when first choice of equipment was exactly the parameter configuration message that generates according to its default configuration of first equipment (or it sends to the parameter configuration message of other equipment in the starting stage), it can omit the operation of carrying out local configuration.
Further; After first equipment is determined root device parameter configuration message, with other parameter configuration packet loss, to discharge the memory space that other parameter configuration messages take; Help conserve storage on the one hand, another fermentation also lays the foundation for follow-up continuation receives the parameter configuration message.
Further; All devices reaches the consistent speed of DCB parameter configuration in the whole data center in order to quicken; After first equipment is determined root device parameter configuration message; The consistent DCB parameter that disposes of needs in the root device parameter configuration message is encapsulated in the local parameter configuration message of oneself, when the preset transmission cycle arrives, the local parameter configuration message is sent then.In this way; Can gradually reduce the quantity of the consistent DCB parameter that disposes of the needs that exist in the data center; And then the processing burden of reduction follow-up equipment, the speed of raising DCB parameter configuration finally improves whole data center and reaches the consistent speed of DCB parameter configuration.
Wherein, First equipment is encapsulated in the consistent DCB parameter that disposes of the needs in the root device parameter configuration message in the local parameter configuration message; According to the preset transmission cycle be then: because configuration parameter only exists in certain field of root device parameter configuration message usually with the concrete implementation that it sends; So first equipment comes out the DCB parameter extraction in the root device parameter configuration message; Again be encapsulated into then in the parameter configuration message on each port of first equipment, by each port parameter configuration message separately sent then.Wherein, may be different for the parameter configuration message on the different port; Said difference is meant that mainly other fields of parameter configuration message maybe be different.
The DCB method for parameter configuration of present embodiment; Can make in the data center all devices confirm that all the parameter configuration message of assigned priority information is root device parameter configuration message and carries out this locality configuration according to identical root device parameter configuration message; Need the DCB parameter of identical configuration to realize consistent the configuration on all devices; Whole process does not need keeper's manual configuration, has realized the automatic configuration of DCB parameter in the data center, has improved the allocative efficiency of DCB parameter.In addition, first equipment has the advantage of conserve storage with the parameter configuration packet loss outside the root device parameter configuration message.Moreover first equipment is encapsulated in the consistent DCB parameter that disposes of the needs in the root device parameter configuration message in the local parameter configuration message and sends, and can improve further that the DCB parameter reaches the consistent speed that disposes in the whole data center.
Usually; Data center adopts multistage deployment architecture to realize, for example: comprise the access layer equipment that is in the data center edge, be in third level equipment on the access layer equipment, be in the second level equipment on the third level equipment and be in the first order equipment on the equipment of the second level.Wherein, the access layer equipment that is in the data center edge need be connected with terminal server, except carrying out also need guiding connected terminal server to carry out relevant configuration after this locality configuration.Based on this; In above-mentioned each embodiment; When first equipment was the access layer equipment (can abbreviate the edge access device as) that is in the data center edge, first equipment also guided connected terminal server to carry out the DCB parameter configuration according to the consistent DCB parameter that disposes of the needs in the root device parameter configuration message.The DCB parameter here mainly is meant the specific protocol message priority.Like this; Message to certain protocol type; Each access layer equipment that is in the edge all can adopt equal priority that the terminal server channeling conduct that it connected is disposed; Make the terminal server in the whole data center dispose identical priority, and then solved because of the different error of transmission problems that cause of priority of messages configuration with a kind of protocol type to message with a kind of protocol type.
Further, in above-mentioned each embodiment, the equipment in the data center (comprising first equipment) can send the local parameter configuration message to other equipment according to the preset transmission cycle.This local parameter configuration message DCB parameter that its default configuration is corresponding that both can be equipment is encapsulated in the parameter configuration message and generates, and also can be with needing the consistent DCB parameter that disposes to be encapsulated in the parameter configuration message in the root device parameter configuration message and generation.Wherein, In the starting stage; Individual device is sent when the transmission cycle arrives is the parameter configuration message that generates according to self default configuration, but As time goes on, when equipment is determined precedence information than the high root device parameter configuration message of local parameter configuration message priority; Will when the transmission cycle arrives, it be sent then needing the consistent DCB parameter that disposes to be encapsulated in the local parameter configuration message in the root device parameter configuration message.What promptly no matter carry in the local parameter configuration message is local corresponding DCB parameter or the consistent DCB parameter that disposes of the needs in the root device parameter configuration message of default configuration, all can be according to preset transmission cycle transmission.Wherein, the transmission cycle can be carried out the adaptability setting according to the scale of data center, for example can be set to 30s.In this way, can reduce the processing burden of each equipment, practice thrift the network bandwidth resources of data center.
Further; In the DCB of above-mentioned each embodiment configuration parameter collocation method; First equipment can also preestablish the configuration take-effective time; Arrive preset configuration during the entry-into-force time when this locality of carrying out according to the consistent DCB parameter that disposes of the needs in the root device parameter configuration message disposes, first equipment is the default configuration of first equipment with local configuration restore, and the DCB parameter that default configuration is corresponding is encapsulated in the local parameter configuration message.Then, when the preset transmission cycle arrived, first equipment sent the local parameter configuration message.Wherein, the preset entry-into-force time can be carried out the adaptability configuration according to characteristics such as data center's scale, stability, for example can be set to 1 minute.
Concrete, when first equipment carries out this locality configuration according to the consistent DCB parameter that disposes of the needs in the root device parameter configuration message, start a timer, and the configuration take-effective time of timing for presetting of timer is set.When the timer timing finished, first equipment was the default configuration of first equipment with local configuration restore, and the DCB parameter of default configuration correspondence is encapsulated in the local parameter configuration message, and the cycle to be sent when arriving sends the local parameter configuration message.
In data center, adopt (the Internet Engineering Task Force of the Internet engineering working group usually; Abbreviate as: IETF) differential service pattern (the Differentiated Service Mode of regulation; Abbreviate as: DiffServ) system.DiffServ system regulation: each message in transmission through network all will be divided into different classes, and classification information will be carried in certain field of message.Wherein, the classification information of message is meant that mainly priority of messages is other.In practical application, priority of messages can not be carried in the two layer message head; Preceding 3 bits in the Tag Control Information field (Tag Control Information) for example, these 3 bits are commonly called user priority level (User Priority bits).Priority of messages not also can be carried in the three-tier message head; For example: (the Type Of Service of the COS in the IPv4 heading; Abbreviate as: TOS) preceding 3 bits of the classification of the transmission in field or the IPv6 heading (Traffic Class) field, these fields are commonly called IP precedence value (IP precedence value); Again for example: preceding 6 bits of the Traffic Class field in the IPv6 heading are called as and are called Differentiated Services Code Point (Differentiated Services Code Point; Abbreviate as: DSCP)) value (value).
That is to say that in data center, message transmits based on the priority level that is disposed and receives.After an equipment in the data center received a message, it was other to discern this priority of messages according to following rule usually.(1) for general non-IP message: if message itself does not comprise QoS information, promptly do not comprise User Priority bits in the two layer message head of message, then can be according to default-service classification field (the Class of Service of message input port; Abbreviate as: CoS) to obtain priority of messages other for value.The default CoS value of input port is the same with the User Priority bits of message, and span is 0～7.If message itself comprises QoS information, promptly comprise User Priority bits in the two layer message head of message, it is other then can directly from message, to obtain priority of messages.(2) for the IP message: if the trust mode of input port is preferential (Trust ip-precedence) pattern of trust IP, it is other then directly from the IP precedence value field (its preceding 3 bits) of IP message, to obtain priority of messages; And when outgoing message, the priority level of obtaining is filled among the User Priority bits (perhaps being called cos field) of outgoing message.If the trust mode of input port is for trusting CoS (Trust CoS), when not comprising User Priority bits in the two layer message head, it is other to obtain priority of messages according to the default CoS value of message input port; When comprising User Priority bits in the two layer message head; It is other directly from the two layer message head, to obtain priority of messages; And directly with the IP precedence value field of CoS value covering message, or fill the value of the dscp field of message to the mapping (CoS-to-DSCP map) of DSCP according to user configured CoS.If a pattern of input message is Trust DSCP, it is other then directly to obtain priority of messages from the dscp field (preceding 6 bits) of IP message, and obtains the COS value of message to the mapping (DSCP-to-COS map) of CoS according to user configured DSCP.
After the priority level of recognition of devices outgoing packet; Service type according to pre-configured different priorities is not corresponding is handled message; When other improperly-configureds of priority of messages, will cause and adopt incorrect service type to handle message, thereby cause error of transmission.For example: with structure shown in Fig. 3 A is example, supposes that server 31 and server 32 carry out the FCoE communication, and supposes that the FCoE priority of messages is 3, and switch 33 is launched PFC function (promptly launching not packet loss service) on priority 3, and on priority 0, allows packet loss.Wherein, when server 32 when to send priority be 3 FCoE message, switch 33 can adopt no packet loss server that it is transmitted to server 31; Suppose server 31 owing to there is not proper configuration; The FCoE priority of messages that causes sending is 0; Switch 33 will adopt and allow the packet loss server that the message of server 31 is transmitted like this, and this has just caused the FCoE message between server 31 and the server 32 packet loss to occur.
By above-mentioned visible, because the configuration of the message priority in DCB parameter difference has caused the message transmissions mistake on the terminal server.And after adopting various embodiments of the present invention to realize consistent configuration of the DCB parameter that whole data center should identical configuration, can address the above problem.Following embodiment will further specify technical scheme of the present invention with the example that is configured to priority.
The DCB method for parameter configuration of present embodiment mainly is the process that message priority is configured; Its main thought is: confirm that from all devices an equipment is as root device; With the root device is benchmark, and all non-root devices receive also the priority deployment configuration of root device synchronously.Carry out this locality configuration for non-root device according to the priority deployment of root device; For the edge access device, when carrying out this locality configuration, dispose the configuration of the connected terminal server of guiding simultaneously according to the priority of root device according to the priority deployment of root device.
In the implementation process of present embodiment, a problem that at first faces is: how to confirm to select which platform equipment as root device.In the present embodiment, using simultaneously is the foundation as the election root device such as the priority facility of every equipment disposition and the MAC Address of equipment in advance.That is to say that in the present embodiment, the precedence information in the parameter configuration message comprises the information such as MAC Address of the priority facility and the equipment of equipment simultaneously.Wherein, Priority facility is used for supplying the equipment election root device of data center to use; Can be every equipment disposition in advance by the keeper, and allow for the identical priority facility of distinct device configuration, but comparatively be preferably the different priority facility of distinct device configuration.The rank of high more this equipment of explanation of priority facility is high more, and this equipment might be chosen as root device more.In addition,, also carry jumping figure information in the parameter configuration priority of messages information of present embodiment, be used to identify the jumping figure of a certain DCB parameter current residual in order to solve loop problem.
In the practical implementation process; Every equipment is encapsulated in oneself priority facility, MAC Address, the jumping figure information of DCB parameter and the DCBX priority configuration informations such as message priority information of local configuration in the parameter configuration message, is broadcast to other equipment in the data center.In the present embodiment, the parameter configuration message is the DCBX message, through the DCBX message is expanded, expands a new field, is designated as DCBX priority configuration field, and this DCBX priority configuration information is filled in respectively in the DCBX priority configuration field.The corresponding root device DCBX message that is called as of root device parameter configuration message.
In the present embodiment, the information that comprises of DCBX priority configuration field is as shown in table 1.
Table 1
Under default situations; All devices all thinks it oneself is the highest equipment of precedence information; Promptly when initial, each equipment is filled to oneself priority facility with the root bridge priorities in the DCBX priority configuration field, and root bridge MAC is filled to the MAC Address of oneself.Then, according to the preset transmission cycle, send the DCBX message that comprises DCBX priority configuration field toward all of the port.Simultaneously, every equipment also can write down the relevant information of the highest equipment of current priority information.Wherein, the relevant information that is write down is the partial information in the DCBX priority configuration field, and is as shown in table 2.Under the default situations, the relevant information of every equipment records is oneself.
Table 2
| The root bridge priorities | Root bridge MAC | Effective jumping figure | Bridge priorities | Bridge MAC |
When receiving a DCBX priority configuration information (being the DCBX message), take to receive DCBX priority configuration information and the DCBX priority configuration information of oneself compares, thereby determine root device and root device DCBX message.In the present embodiment, every equipment compares according to the priority of root bridge priorities, root bridge MAC, bridge priorities, bridge MAC successively, but is not limited to this.In addition, big according to the root bridge priorities in the present embodiment, MAC is little for the root bridge, and bridge priorities is big, and the higher principle of the priority ratio that bridge MAC is little compares.Wherein, when having only the standard of comparison of upper level identical, compare in standard of comparison according to next stage.For example: suppose that two DXCB priority configuration informations are respectively DCBXA and DCBXB, if the root bridge priorities of DCBXA big than DCBXB, the MAC of DCBXA is bigger than DCBXB's, and then the priority ratio of DCBXA is higher; If the root bridge priorities of DCBXA is identical with DCBXB's, the MAC of DCBXA is bigger than DCBXB's, and then the priority ratio of DCBXB is higher.
In the present embodiment; Because every equipment all is to send the DCBX message to its all of the port; So comparatively speaking; Every equipment can be received a plurality of DCBX messages, and then present embodiment provides a kind of equipment from a plurality of DCBX messages (comprising DCBX message that itself sends and a plurality of DCBX messages that receive), to select the execution mode of root device DCBX message (just selecting root device).With equipment wherein; For example first equipment is example; This execution mode specifically comprises: first equipment is selected the highest DCBX message of priority facility from local DCBX message and all DCBX messages that receive, that is the highest DCBX message of root bridge priorities.When the highest DCBX message of priority facility was unique, first equipment DCBX message that priority facility is the highest was as root device DCBX message.When the highest DCBX message of priority facility exists when a plurality of, first equipment is determined root device DCBX message according to the MAC Address in the precedence information from the highest DCBX message of a plurality of priority facilities.Wherein, the MAC Address in the precedence information mainly is meant the root bridge MAC in the DCBX priority configuration field.
Further; First equipment is according to the MAC Address in the precedence information; From the highest DCBX message of a plurality of priority facilities, determining root device DCBX message comprises: first equipment selects the minimum or maximum DCBX message of root bridge MAC Address as root device DCBX message from the highest DCBX message of a plurality of priority facilities.
In addition; First equipment except earlier according to the root bridge priorities then according to root bridge MAC; From a plurality of equipment, determine outside the root device DCBX message, also can from a plurality of equipment, determine root device DCBX message earlier according to root bridge MAC Address and then according to the root bridge priorities.
According to said method, every equipment all can select identical equipment as root device, and can be with the DCBX message of its transmission as root device DCBX message.As far as an equipment, after selecting root device DCBX message, then upgrade the relevant information of the own the highest equipment of current priority information that writes down; Launch a timer simultaneously; Be used for writing down the effective time of the partial information in the DCBX priority configuration field in the root device DCBX message; When if timer regularly finishes, then the relevant information (being the partial information in the DCBX priority configuration field in the root device DCBX message that is write down) of again that the current priority information of record is the highest equipment is updated to the relevant information of oneself.In this process, equipment also can be encapsulated in the DCBX priority configuration field in the root device DCBX message in the local DCBX message, then local DCBX message is sent from all of the port.
For the edge access device, will guide connected terminal server to carry out the message priority configuration according to type of message in the DCBX priority configuration field in the DCBX message and the corresponding message priority of type of message.Wherein, can carry a plurality of type of messages in the DCBX priority configuration field, and carry the message priority corresponding simultaneously with each type of message.For example: the type of message in DCBX priority configuration field is the FCoE message, and the message priority corresponding with this type of message is 3 o'clock, through behind the present embodiment, all can the FCoE priority of messages be configured to 3 on every station terminal server.
Further, in the present embodiment, when receiving a DCBX message, every equipment can compare the MAC Address of the root bridge MAC Address in the DCBX message of receiving with oneself earlier; If identical with the MAC Address of oneself, explain this DCBX message be send by oneself rap around to again here, so it is abandoned.Because every equipment is except sending the DCBX message that oneself generates; Also can directly the DCBX priority configuration field in the root device DCBX message be encapsulated in the local DCBX message and send; Might cause actual package in the DCBX message that certain equipment receives like this be by other device forwards from the DCBX priority configuration information in the DCBX message of this equipment itself; Equipment directly will be abandoned from the DCBX priority configuration information in the DCBX message of self; The problem that can avoid constantly repeating to send same DCBX priority configuration information on the one hand; Can practice thrift post-treatment operations on the other hand, alleviate the burden of equipment.
In addition; In the present embodiment; Effective jumping figure of the DCBX priority configuration information that encapsulates in the DCBX message is set simultaneously, can prevents that also loops takes place, when effective jumping figure becomes 0; The DCBX message that is packaged with this DCBX priority configuration information promptly is dropped, the problem of having avoided same DCBX priority configuration information in loop, constantly to be sent out.
Shown in Fig. 3 B; After DCBX priority configuration through present embodiment; Will dispose the FCoE priority of messages on server 34 and the server 35 is 3; Suppose that switch 36, switch 37 and switch 38 have disposed identical processing mode on priority 3, supposed all to open the PFC function and guaranteed that priority is the no packet loss transmission of 3 FCoE message.Based on this, it is example that present embodiment sends the FCoE message with server 35 to server 34, and the transmission course of FCoE message in network shown in Fig. 3 B is described.
At first, server 35 generates the FCoE messages, and the FCoE priority of messages is set is 3, this precedence information is encapsulated among the User Priority bits of FCoE message; Then the FCoE message is sent to connected switch 38.It is two layers of port that switch 38 receives inbound port (promptly receiving the port of FCoE message); And its trust mode is a Trust Cos pattern; So directly from the User Priority bits of FCoE message, obtain priority of messages information, and the FCoE message is handled according to priority corresponding processing mode.Concrete; Because being 3 FCoE message, 38 pairs of priority of switch opened the PFC function; The old friend changes planes and 38 receives can earlier the FCoE message be stored in the container behind the FCoE message that server 35 sends and carry out buffer memory; Behind the FCoE message that receives some (for example the utilance of container reaches certain percentage), send the message that stops to send the FCoE message to server 35; Then the FCoE message in the container is sent to the outbound port of switch 38, and these FCoE messages are being sent the message of back, and constantly adopt this mode till server 35 has sent the FCoE message to server 35 transmissions continuation transmission FCoE message.
The trust mode of the outbound port of switch 38 is a Trust CoS pattern, and the old friend changes planes and 38 directly the FCoE message sent to switch 37.Switch 37 directly extracts priority of messages information from the User Priority bits of FCoE message, identify the FCoE priority of messages, according to priority the FCoE message is handled.Concrete; Because being 3 FCoE message, 37 pairs of priority of switch opened the PFC function; The old friend changes planes and 37 receives can earlier the FCoE message be stored in the container behind the FCoE message that switch 38 sends and carry out buffer memory; Switch 38 sends the message that stops to send the FCoE message behind the FCoE message that receives some (for example the utilance of container reaches certain percentage); Then the FCoE message in the container is sent to the outbound port of switch 37, and these FCoE messages are being sent the message of back, and constantly adopt this mode till switch 38 has sent the FCoE message to switch 38 transmissions continuation transmission FCoE message.The outbound port of supposing switch 37 also is two layers of mouth, and its trust mode also is a Trust CoS pattern, then directly the FCoE message is sent to switch 36.Switch 36 directly extracts priority of messages information from the User Priority bits of FCoE message, identify priority of messages, after according to priority the FCoE message being handled, the FCoE message is sent to its outbound port; The outbound port of switch 36 is connected with server 34, belongs to two layers of mouth, and its trust mode is a Trust Cos pattern, and the old friend changes planes and 36 directly the FCoE message sent to server 34.Wherein, the process and the switch 37 of switch 36 receptions and transmission FCoE message are similar, repeat no more at this.Because server 34 is identical with the priority configuration of server 35, thus can successfully receive the FCoE message, simultaneously because each switch has disposed identical processing mode on priority 3, so can realize the no packet loss transmission of FcoE message.Wherein, the handling process of FCoE message that is sent to server 35 by server 34 is similar, repeats no more at this.
In sum; The DCB method for parameter configuration that various embodiments of the present invention provide; Can make automatically in the data center needs the DCB parameter of identical configuration on all devices, to reach consistent the configuration, and Unsupervised Yuan manual configuration has improved the allocative efficiency of DCB parameter; Help the quick structure at uniform data center, and solved and dispose the inconsistent data transmission fault that causes.
The structural representation of the network equipment that Fig. 4 provides for one embodiment of the invention.As shown in Figure 4, the network equipment of present embodiment comprises: receiver module 41, determination module 42 and local configuration module 43.
Wherein, receiver module 41 is used to receive the parameter configuration message that other network equipments except that the network equipment send, and said parameter configuration message comprises the consistent DCB parameter that disposes with needs of precedence information.Determination module 42; Be connected with receiver module 41; Be used for according to the precedence information in the precedence information of local parameter configuration message and all parameter configuration messages that receive, the parameter configuration message of confirming to carry assigned priority information is a root device parameter configuration message.Local configuration module 43 is connected with determination module 42, is used for carrying out this locality configuration according to the consistent DCB parameter that disposes of the needs of said root device parameter configuration message.
Each functional module of the present embodiment network equipment can be used for carrying out the flow process of DCB method for parameter configuration shown in Figure 1, and its concrete operation principle repeats no more, and sees the description of method embodiment for details.
The network equipment of present embodiment; Receiving the parameter configuration message that other equipment send; The parameter configuration message of from local parameter configuration message and all parameter configuration messages of receiving, selecting to carry assigned priority information according to the precedence information in the parameter configuration message is as root device parameter configuration message, and carries out this locality according to the DCB parameter in the root device parameter configuration message and dispose.All devices in data center all selects the parameter configuration message of assigned priority information as the root device configuration message; And after carrying out this locality configuration according to identical root device parameter configuration message; Need the DCB parameter of identical configuration will realize consistent the configuration on all devices; Whole process does not need keeper's manual configuration, has realized the automatic configuration of DCB parameter in the data center, has improved the allocative efficiency of DCB parameter.
The structural representation of the network equipment that Fig. 5 provides for another embodiment of the present invention.Present embodiment is based on realization embodiment illustrated in fig. 4, and is as shown in Figure 5, and the network equipment of present embodiment also comprises: deletion package module 51.
The network equipment of present embodiment can also comprise: boot configuration module 52 is connected with determination module 42.Concrete; When the network equipment of present embodiment is the edge access device in the data center, can carry out the DCB parameter configuration by boot configuration module 52 terminal server that consistent DCB parameter guiding of disposing is connected with this network equipment according to the needs in the root device parameter configuration message.
Further, the network equipment of present embodiment also comprises: recover package module 53.
Recover package module 53; Be connected with local configuration module 43; Be used for arriving preset configuration during the entry-into-force time in this locality configuration of carrying out according to the consistent DCB parameter that disposes of the needs of root device parameter configuration message; With local configuration restore is the default configuration of the network equipment, and the DCB parameter that default configuration is corresponding is encapsulated in the local parameter configuration message.
Further, the network equipment of present embodiment also comprises: sending module 54.Sending module 54 is connected with other network equipments with deletion package module 51, recovery package module 53, is used for according to the preset transmission cycle, to other network equipments broadcasting local parameter configuration messages.Wherein, the local parameter configuration message that sending module 53 is sent can be generated by the DCB parameter encapsulation of local default configuration correspondence, also can be to be generated by the consistent DCB parameter encapsulation of disposing of the needs in the root device parameter configuration message.
Above-mentioned each functional module can be used for carrying out the corresponding flow process in the DCB method for parameter configuration shown in Figure 2, and its concrete operation principle repeats no more, and sees the description of method embodiment for details.
In the present embodiment, the precedence information in the parameter configuration message can comprise: prewired priority facility and medium access control MAC Address.
Based on above-mentioned; Receiver module 41 specifically is used for the MAC Address parameter configuration packet loss identical with the MAC Address of the network equipment with the parameter configuration message medium priority information that receives, and only receives the MAC Address parameter configuration message inequality of the MAC Address and the network equipment.
Based on above-mentioned, a kind of implementation structure of determination module 42 comprises: chooser module 421, first is confirmed submodule 422 and second definite submodule 423.
Concrete, chooser module 421 is connected with receiver module 41, is used for selecting the highest parameter configuration message of priority facility from local parameter configuration message and all parameter configuration messages that receive.First confirms submodule 422; Be connected with chooser module 421; The highest parameter configuration message of priority facility that is used for selecting in chooser module 421 exists when a plurality of; According to the MAC Address in the precedence information, from the highest parameter configuration message of a plurality of priority facilities, determine root device parameter configuration message.Second confirms to be connected submodule 423 with chooser module 421, and when the parameter configuration message that the priority facility that is used for selecting in chooser module 421 is the highest was unique, the parameter configuration message that priority facility is the highest was as root device parameter configuration message.
Further, first confirms that submodule 422 specifically is used for from the highest parameter configuration message of a plurality of priority facilities, and MAC Address minimum in the selection precedence information or maximum parameter configuration message are as root device parameter configuration message.
Above-mentioned functions submodule or functional unit can be used for the method flow under the structure shown in the execution graph 3A, and its concrete operation principle repeats no more, and sees the description of method embodiment for details.
The network equipment of present embodiment; Receiving the parameter configuration message that other equipment send; From local parameter configuration message and all parameter configuration messages of receiving, select root device parameter configuration message according to the precedence information in the parameter configuration message, and carry out this locality according to the DCB parameter in the root device parameter configuration message and dispose.Adopt the data center of the network equipment realization of present embodiment; All devices wherein all can be selected identical root device parameter configuration message; And after can carrying out this locality configuration according to identical root device parameter configuration message, needing the DCB parameter of identical configuration will realize consistent the configuration on all devices, whole process does not need keeper's manual configuration; Realize the automatic configuration of DCB parameter in the data center, improved the allocative efficiency of DCB parameter.
One embodiment of the invention provides a kind of DCB parameter configuring system, and this system comprises: the network equipment that a plurality of the above embodiment of the present invention provide.Structure about the network equipment can be referring to Fig. 4 or embodiment illustrated in fig. 5, and its concrete operation principle can repeat no more at this referring to the description in Fig. 1, Fig. 2 or Fig. 3 A illustrated embodiment.For example: the system of present embodiment can be data center, and the network equipment can be the equipment in the data center.
Further, when the network equipment be that (for example: during data center) edge access layer equipment, the system of present embodiment can also comprise the terminal server that is connected with the network equipment in system.
The system of present embodiment is owing to comprise the network equipment that the embodiment of the invention provides; It can carry out the DCB parameter configuration flow process that the embodiment of the invention provides; Can make equally needs the DCB parameter of identical configuration to realize consistent the configuration on all devices in the whole system; And do not need keeper's manual configuration, realize the automatic configuration of DCB parameter, improved the allocative efficiency of DCB parameter.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be accomplished through the relevant hardware of program command; Aforesaid program can be stored in the computer read/write memory medium; This program the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
What should explain at last is: above embodiment is only in order to explaining technical scheme of the present invention, but not to its restriction; Although with reference to previous embodiment the present invention has been carried out detailed explanation, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these are revised or replacement, do not make the spirit and the scope of the essence disengaging various embodiments of the present invention technical scheme of relevant art scheme.
Claims (15)
1. the bridge joint DCB of a data center method for parameter configuration is characterized in that, comprising:
First equipment receives the parameter configuration message that other equipment except that said first equipment send, and said parameter configuration message comprises the consistent DCB parameter that disposes with needs of precedence information;
Said first equipment is according to the precedence information in the precedence information in the local parameter configuration message and all parameter configuration messages that receive, and the parameter configuration message of confirming to carry assigned priority information is a root device parameter configuration message;
Said first equipment carries out this locality configuration according to the consistent DCB parameter that disposes of the needs in the said root device parameter configuration message.
2. DCB method for parameter configuration according to claim 1; It is characterized in that; Said first equipment is according to the precedence information in the precedence information in the local parameter configuration message and all parameter configuration messages that receive, and the parameter configuration message of confirming to carry assigned priority information is also to comprise after the root device parameter configuration message:
Said first equipment will be except that other parameter configuration packet loss the said root device parameter configuration message, and the consistent DCB parameter that disposes of the needs in the said root device parameter configuration message is encapsulated in the local parameter configuration message.
3. DCB method for parameter configuration according to claim 1; It is characterized in that; Said first equipment is according to the precedence information in the precedence information in the local parameter configuration message and all parameter configuration messages that receive, and the parameter configuration message of confirming to carry assigned priority information is also to comprise after the root device parameter configuration message:
When said first equipment was the edge access device, said first equipment terminal server that consistent DCB parameter guiding of disposing is connected with said first equipment according to the needs in the said root device parameter configuration message carried out the DCB parameter configuration.
4. DCB method for parameter configuration according to claim 1 is characterized in that, also comprises:
When this locality configuration of carrying out according to the consistent DCB parameter that disposes of the needs in the said root device parameter configuration message arrives preset configuration during the entry-into-force time; Said first equipment is the default configuration of said first equipment with local configuration restore, and the DCB parameter that said default configuration is corresponding is encapsulated in the local parameter configuration message.
5. according to claim 2 or 4 described DCB method for parameter configuration, it is characterized in that, also comprise:
Said first equipment sends to said other equipment according to the preset transmission cycle with the local parameter configuration message.
6. according to claim 1 or 2 or 3 or 4 described DCB method for parameter configuration, it is characterized in that said precedence information comprises: prewired priority facility and medium access control MAC Address;
The parameter configuration message that said first equipment receives other equipment transmissions except that said first equipment comprises:
Said first equipment is with the MAC Address parameter configuration packet loss identical with the MAC Address of said first equipment in the parameter configuration message medium priority information that receives.
7. DCB method for parameter configuration according to claim 6; It is characterized in that; Said first equipment is according to the precedence information in the precedence information in the local parameter configuration message and all parameter configuration messages that receive, and the parameter configuration message of confirming to carry assigned priority information is that root device parameter configuration message comprises:
Said first equipment is selected the highest parameter configuration message of priority facility from local parameter configuration message and all parameter configuration messages that receive;
When the highest parameter configuration message of said priority facility exists when a plurality of, said first equipment is determined said root device parameter configuration message according to the MAC Address in the precedence information from the highest parameter configuration message of a plurality of said priority facilities;
When the highest parameter configuration message of said priority facility was unique, said first equipment parameter configuration message that said priority facility is the highest was as said root device parameter configuration message.
8. a network equipment is characterized in that, comprising:
Receiver module is used to receive the parameter configuration message that other network equipments except that the said network equipment send, and said parameter configuration message comprises the consistent DCB parameter that disposes with needs of precedence information;
Determination module is used for according to the precedence information in the precedence information of local parameter configuration message and all parameter configuration messages that receive, and the parameter configuration message of confirming to carry assigned priority information is a root device parameter configuration message;
Local configuration module is used for carrying out this locality configuration according to the consistent DCB parameter that disposes of the needs of said root device parameter configuration message.
9. the network equipment according to claim 8 is characterized in that, also comprises:
The deletion package module is used for other parameter configuration packet loss except that said root device parameter configuration message, and the consistent DCB parameter that disposes of the needs in the said root device parameter configuration message is encapsulated in the local parameter configuration message.
10. the network equipment according to claim 8 is characterized in that, also comprises:
The boot configuration module is used for when the said network equipment is the edge access device, and the terminal server that consistent DCB parameter guiding of disposing is connected with the said network equipment according to the needs in the said root device parameter configuration message carries out the DCB parameter configuration.
11. the network equipment according to claim 8 is characterized in that, also comprises:
Recover package module; Be used for arriving preset configuration during the entry-into-force time in this locality configuration of carrying out according to the consistent DCB parameter that disposes of the needs of said root device parameter configuration message; With local configuration restore is the default configuration of the said network equipment, and the DCB parameter that said default configuration is corresponding is encapsulated in the local parameter configuration message.
12. according to the claim 9 or the 11 described network equipments, it is characterized in that, also comprise:
Sending module is used for according to the preset transmission cycle local parameter configuration message being sent to said other network equipments.
13. according to Claim 8 or 9 or the 10 or 11 described network equipments, it is characterized in that said precedence information comprises: prewired priority facility and medium access control MAC Address;
Said receiver module specifically is used for the MAC Address parameter configuration packet loss identical with the MAC Address of the said network equipment with the parameter configuration message medium priority information that receives.
14. the network equipment according to claim 13 is characterized in that, said determination module comprises:
The chooser module is used for selecting the highest parameter configuration message of priority facility from local parameter configuration message and all parameter configuration messages that receive;
First confirms submodule; Be used for existing when a plurality of at the highest parameter configuration message of said priority facility; According to the MAC Address in the precedence information, from the highest parameter configuration message of a plurality of said priority facilities, determine said root device parameter configuration message;
Second confirms submodule, is used for when the highest parameter configuration message of said priority facility is unique, and the parameter configuration message that said priority facility is the highest is as said root device parameter configuration message.
15. the bridge joint DCB of a data center parameter configuring system is characterized in that, comprises each described network equipment of claim 8-14 and the terminal server that is connected with the said network equipment.
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