WO2014127633A1 - Procédé de transmission de paquets lldp et dispositif dcb - Google Patents

Procédé de transmission de paquets lldp et dispositif dcb Download PDF

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Publication number
WO2014127633A1
WO2014127633A1 PCT/CN2013/083946 CN2013083946W WO2014127633A1 WO 2014127633 A1 WO2014127633 A1 WO 2014127633A1 CN 2013083946 W CN2013083946 W CN 2013083946W WO 2014127633 A1 WO2014127633 A1 WO 2014127633A1
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WO
WIPO (PCT)
Prior art keywords
application priority
sequence
data
bit segment
tlv
Prior art date
Application number
PCT/CN2013/083946
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English (en)
Chinese (zh)
Inventor
曹淑玲
Original Assignee
中兴通讯股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Publication of WO2014127633A1 publication Critical patent/WO2014127633A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/30—Definitions, standards or architectural aspects of layered protocol stacks
    • H04L69/32—Architecture of open systems interconnection [OSI] 7-layer type protocol stacks, e.g. the interfaces between the data link level and the physical level
    • H04L69/322—Intralayer communication protocols among peer entities or protocol data unit [PDU] definitions
    • H04L69/324—Intralayer communication protocols among peer entities or protocol data unit [PDU] definitions in the data link layer [OSI layer 2], e.g. HDLC
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/04—Protocols for data compression, e.g. ROHC
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks

Definitions

  • the present invention relates to the field of communication technologies, and in particular, to a Link Layer Discovery Protocol (Link Layer Discovery Protocol) for carrying an Application Priority (APPP) Type Length Value (TLV).
  • Link Layer Discovery Protocol for carrying an Application Priority (APPP) Type Length Value (TLV).
  • a data center is a center for providing enterprise application service services, and is a center for data calculation, exchange, and storage. It combines advanced network technology and storage technology to carry more than 80% of service requests and data storage in the network, providing services and operating platforms for the healthy operation of the customer's business system.
  • enhanced Ethernet is currently proposed. Enhanced Ethernet allows for the division of different services to meet the needs of both ordinary Ethernet and data center networks.
  • the Data Center Bridging Exchange (DCBX) protocol specifies the DCB (automatic discovery and capability exchange protocol for devices), which is directly applied to DCB devices in the data center environment.
  • the peer device exchanges the configuration information and configures the DCB function for the peer device if the peer device allows it. This protocol is also used for the detection of the mismatch configuration and the configuration of the peer device directly connected to it.
  • the data center protocol extends the TLV field of the IEEE 802.1AB LLDP Organization Specific Identifier (OUI) and carries it in the LLDP packet for transmission.
  • the application priority protocol can be based on the port number or the packet. The protocol type divides the received packets according to their priorities, so that different service flows can be classified.
  • Application priority function divides local users into services through DCBX.
  • the situation is encapsulated into an LLDP TLV message and sent to the peer.
  • the configuration of the LLDP TLV packet is as follows: Figure 1 shows the structure of an LLDP TLV packet.
  • the LLDP service consumes three bytes of the TLV field. 2)), the service packets are divided according to the port number or the protocol type.
  • the problem is that the length of the packet occupied by the service division information in the packet is likely to exceed The maximum length of the message; in addition, even if only the port number is divided, sometimes the packet transmission is required, and the split message may have hundreds of messages or even more, thereby increasing the central processing unit.
  • the embodiments of the present invention provide an LLDP packet transmission method and a DCB device that carry an application priority TLV.
  • a method for transmitting an LLDP packet carrying an application priority TLV including:
  • the DCB device is configured to carry the extended LLDP packet with the application priority TLV, and expand, in the field of the application priority TLV, a sequence bit segment indicating whether the application priority packet content is continuous; according to the service data of the current port of the DCB device The continuity is filled with the corresponding service data, and the sequence bit segment is set accordingly; the extended LLDP packet after the data is filled is sent to the peer device.
  • the step of filling the corresponding service data according to the continuity of the service data of the current port of the DCB device, and performing the corresponding set operation on the sequence bit segment comprises: applying the priority priority entry of the DCB device to the current port configuration Performing a categorization, and checking a continuous state of an application priority entry of the same service type; calculating and generating a service data sequence of the same service type under the current port according to the continuous state; transmitting an extended LLDP carrying an application priority TLV In the message, if the service data sequence is a contiguous sequence, the application priority TLV field is filled with the start data and the end data of the contiguous sequence, and the sequence bit segment is set; otherwise, the priority TLV is applied according to the default padding rule.
  • the method further includes: updating a division type of the service data of the current port of the DCB device according to the user modification operation, and returning to the execution step to calculate and generate a service data sequence of the same service type under the current port according to the continuous state.
  • the rules of the set sequence bit segment include: If the start data is the first field of the application priority TLV field, the sequence bit segment is set or not set; if the start data is other fields of the application priority TLV field, The sequence bit segment is not set.
  • the rule of the set sequence bit segment further comprises: if the sequence bit segment of the plurality of consecutive fields is set, the sequence bit segment of the last field is set to be valid.
  • a DCB device for transmitting an LLDP packet carrying an application priority TLV including: a configuration module, configured to configure an extended LLDP packet carrying an application priority TLV, where The field extension of the application priority TLV indicates whether the application priority message content is consecutive sequence segments; the operation module is configured to fill the corresponding service data according to the continuity of the service data of the current port of the DCB device, and The sequence bit segment is set to be correspondingly set; the sending module is configured to send the extended LLDP packet after the data is filled to the peer device.
  • the operation module includes: a categorization checking unit, configured to classify an application priority entry configured by the current port of the DCB device, and check a continuous state of an application priority entry of the same service type; And setting, according to the continuous state, a service data sequence of the same service type under the current port, and a data filling unit, configured to send the service data when the extended LLDP packet carrying the application priority TLV is sent If the sequence is a contiguous sequence, the start and end data of the contiguous sequence are filled in the application priority TLV field, and the sequence bit segment is set; otherwise, the service data is filled in the application priority TLV field according to the default padding rule.
  • a categorization checking unit configured to classify an application priority entry configured by the current port of the DCB device, and check a continuous state of an application priority entry of the same service type
  • a data filling unit configured to send the service data when the extended LLDP packet carrying the application priority TLV is sent If the sequence is a contiguous sequence, the start and end data
  • the categorization checking unit is further configured to update a division category of the service data of the current port of the DCB device according to a user modification operation, and recalculate and generate the same service type under the current port by the calculation generation unit.
  • Business data sequence Preferably, the rules of the set sequence bit segment include: If the start data is the first field of the application priority TLV field, the sequence bit segment is set or not set; if the start data is other fields of the application priority TLV field, The sequence bit segment is not set.
  • the rule of the set sequence bit segment further comprises: if the sequence bit segment of the plurality of consecutive fields is set, the sequence bit segment of the last field is set to be valid.
  • An LLDP packet transmission method and a DCB device carrying an application priority TLV are configured to extend an LLDP packet carrying an application priority TLV and extend the application priority in a field of an application priority TLV.
  • the content of the message is a continuous sequence segment; when transmitting the message, filling the corresponding service data according to the continuity of the service data of the current port of the DCB device, and performing corresponding positioning operations on the sequence bit segment;
  • the content length of the message can be greatly shortened, the data transmission can be reduced, and the CPU resource consumption can be reduced.
  • FIG. 2 is a schematic structural diagram of an APPP in an LLDP TLV according to the related art
  • FIG. 3 is a schematic diagram of an LLDP packet transmission method carrying an application priority TLV according to the present invention
  • FIG. 4 is a schematic diagram of an extended application priority TLV field in the embodiment of the present invention
  • FIG. 5 is a schematic structural diagram of an embodiment of a DCB device for transmitting an LLDP packet carrying an application priority TLV according to an embodiment of the present invention
  • It is a schematic structural diagram of an operation module in an embodiment of a DCB device that transmits an LLDP packet carrying an application priority TLV.
  • the solution of the embodiment of the present invention is: For a fixed set, if the number of samples is larger, the probability that the data is continuous is larger. For a continuous data, the intermediate data is actually not necessary to transmit, just need to tell the peer that the data is continuous. Therefore, the embodiment of the present invention extends the application priority TLV field (occupying the upper field of the Rsv field); the bit segment is used to indicate whether the content in the protocol ID is continuous, if continuous, The application priority TLV field only needs to fill the start data and the end data of the continuous sequence, thereby optimizing the content length of the message, reducing the data transmission, and reducing the CPU resource consumption. As shown in FIG.
  • a method for transmitting an LLDP packet carrying an application priority TLV includes: Step S101: A DCB device configures an extended LLDP packet carrying an application priority TLV, where The intra-field extension of the application priority TLV indicates whether the application priority packet content is consecutive sequence segments.
  • the solution in this embodiment relates to a scheme for optimizing the content length of the application priority packet of the LLDP packet, which can be greatly shortened by optimization.
  • the content length of the message reduces the transmission of data.
  • the principle of this embodiment is based on: For a fixed set, if there are more samples, the probability that the data is continuous is larger. For a continuous data, the intermediate data is actually not necessary to transmit, just tell the peer that the data is continuous.
  • each service division occupies 3 fields (as shown in Figure 2), and N service divisions need to occupy N*3 bytes in length.
  • the embodiment of the present invention needs to first extend the application priority TLV field (occupying the upper field of the Rsv field), as shown in FIG. 2 and FIG. 4; the bit segment is used to indicate whether the content in the protocol ID is continuous.
  • Step S102 Fill the corresponding service data according to the continuity of the service data of the current port of the DCB device, and perform corresponding positioning operations on the sequence bit segment.
  • the DCB device is based on the application priority entry configured by the current port, according to Sel.
  • the fields categorize these entries and check the contiguous state of the application priority entries for the same business type (Sel field). Then, according to the continuous state, the service data sequence of the same service type under the current port is calculated and generated, and the LLDP is sent to send the APPP-related TLV.
  • the advantage of generating a sequence of service data is that unnecessary transfer of intermediate data can be omitted, thereby saving bandwidth.
  • the service data is filled in the application priority TLV field according to the default filling rule, for example, data filling is performed according to the protocol.
  • the foregoing steps need to be performed again, that is, the service data sequence of the same service type under the current port is recalculated and generated.
  • the processing principle of setting the Serial bit segment in the APPP TLV packet sending in this embodiment is: 1) If the starting data is the first field of the APPP TLV field (Application Priority Table field), the Serial may or may not be set; for other fields of the APPP TLV field, the Serial bit of the starting data must not be Set, otherwise it may be transmitted as intermediate data.
  • Step S103 Send the extended LLDP packet that is filled with the data to the peer device.
  • the extended LLDP packet is filled to the peer device.
  • the peer device After receiving the APPP TLV, the peer device can process the packet according to the following rules: The sequence of the service data sent by the peer (DCB device) is local. The data contained in all the sequences may be expanded as needed or not, and no specific requirements are made here.
  • the extended LLDP packet carrying the application priority TLV is configured, and the sequence segment indicating whether the application priority packet content is continuous is expanded in the field of the application priority TIN;
  • the continuity of the service data of the current port of the DCB device fills the corresponding service data, and performs corresponding positioning operations on the sequence bit segment; thereby optimizing, the content length of the message can be greatly shortened, the data transmission is reduced, and the CPU is reduced.
  • the consumption of resources As shown in FIG.
  • an embodiment of the present invention provides a DCB device that transmits an LLDP packet carrying an application priority TLV, and includes: a configuration module 201, an operation module 202, and a sending module 203, where: the configuration module 201 is set to Configuring an extended LLDP packet carrying the application priority TLV, and expanding, in the field of the application priority TLV, a sequence bit segment indicating whether the application priority message content is continuous; the operation module 202 is configured to be based on the current DCB device The continuity of the service data of the port is filled with the corresponding service data, and the sequence bit segment is correspondingly set.
  • the sending module 203 is configured to send the extended LLDP packet after the data is filled to the peer device.
  • the solution in this embodiment relates to a solution for optimizing the content length of an application priority packet in an LLDP packet.
  • the principle of this embodiment is based on: For a fixed set, if there are more samples, the probability that the data is continuous is larger. For a continuous data, the intermediate data is actually not necessary to transmit, just tell the peer that the data is continuous. In this worst case, that is, the situation described in the agreement, each industry The service partition occupies 3 fields (as shown in Figure 2). The N services are divided into N*3 bytes.
  • the embodiment of the present invention needs to first extend the application priority TLV field (occupying the upper field of the Rsv field), as shown in FIG. 2 and FIG.
  • the configuration module 201 is configured to configure an extended LLDP packet carrying the application priority TLV, and expand, in a field of the application priority TLV, a sequence bit segment indicating whether the application priority message content is continuous; and then the operation module 202 is configured according to the DCB.
  • the continuity of the service data of the current port of the device is filled with the corresponding service data, and the sequence bit segment is correspondingly set.
  • the operation module 202 classifies the entries according to the Sel field based on the application priority entries of the current port configuration, and checks the continuous state of the application priority entries of the same service type (Sel field).
  • the service data sequence of the same service type under the current port is calculated and generated, and the LLDP is sent to send the APPP-related TLV.
  • the advantage of generating a sequence of service data is that unnecessary transfer of intermediate data can be omitted, thereby saving bandwidth.
  • the processing principle of setting the Serial bit segment in the APPP TLV packet sending in this embodiment is as follows: 1) If the starting data is the first field of the APPP TLV field (Application Priority Table field), the Serial may be set or not set. Bit; For other fields of the APPP TLV field, the Serial bit of the start data must not be set, otherwise it may be transmitted as intermediate data.
  • the sending module 203 sends the extended LLDP packet to the peer device
  • the peer device can process the packet according to the following rules: After receiving the APPP TLV, the peer device sends the packet to the peer (DCB device).
  • the sequence of division of business data, the data contained in all the sequences may be expanded locally or not according to requirements, and no specific requirements are required here. More specifically, as shown in FIG.
  • the operation module 202 may include: a classification checking unit 2021, a calculation generating unit 2022, and a data filling unit 2023, where: the classification checking unit 2021 is configured to be current to the DCB device.
  • the application priority entry of the port configuration is categorized, and the continuous state of the application priority entry of the same service type is checked.
  • the calculation generating unit 2022 is configured to calculate and generate the service of the same service type under the current port according to the continuous state.
  • the data padding unit 2023 is configured to: when the extended LLDP message carrying the application priority TLV is sent, if the service data sequence is a continuous sequence, the application priority TLV field is filled with the start data of the continuous sequence and End the data, and set the sequence bit segment; otherwise, fill the service data in the application priority TLV field according to the default fill rule. Further, the categorization checking unit 2021 is further configured to update the division type of the service data of the current port of the DCB device according to the user modification operation, and recalculate and generate the same service under the current port by the calculation generation unit 2022. A type of business data sequence.
  • the extended LLDP packet carrying the application priority TLV is configured, and the sequence segment indicating whether the application priority packet content is continuous is expanded in the field of the application priority TLV; when the packet is transmitted, The corresponding service data is filled according to the continuity of the service data of the current port of the DCB device, and the sequence bit segment is correspondingly set; thereby, the optimization can greatly shorten the content length of the message, reduce the data transmission, and thereby reduce CPU resource consumption.

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  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Communication Control (AREA)
  • Computer And Data Communications (AREA)

Abstract

La présente invention concerne un procédé de transmission d'un paquet de protocole de découverte de couche de liaison (LLDP) comportant une valeur de longueur type (TLV) de priorité d'application, et un dispositif de pontage de centre de données (DCB). Le procédé selon l'invention consiste à : configurer, au moyen du dispositif DCB, un paquet LLDP étendu comportant une TLV de priorité d'application, et étendre, à l'intérieur d'un champ de TLV de priorité d'application, un champ de bits de séquence indiquant si un contenu d'un paquet de priorité d'application est continu ; remplir des données de service correspondantes en fonction de la continuité de données de service d'un port courant du dispositif DCB, et réaliser une opération de réinitialisation correspondante sur le champ de bits de séquence ; et envoyer le paquet LLDP étendu rempli avec les données vers un dispositif homologue. Au moyen d'une optimisation, la présente invention peut considérablement raccourcir la longueur de contenu du paquet, réduire la transmission de données, et diminuer la consommation de ressources de l'UCT.
PCT/CN2013/083946 2013-02-21 2013-09-22 Procédé de transmission de paquets lldp et dispositif dcb WO2014127633A1 (fr)

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Application Number Priority Date Filing Date Title
CN201310055755.7A CN104009943B (zh) 2013-02-21 2013-02-21 Lldp报文传输方法及dcb设备
CN201310055755.7 2013-02-21

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CN104394160B (zh) * 2014-12-03 2017-09-29 武汉烽火网络有限责任公司 一种链路层发现协议应用在同步数字体系的方法
CN105141440B (zh) * 2015-06-30 2019-03-12 新华三技术有限公司 一种数据中心桥能力交换协议参数的部署方法和装置
CN114244688A (zh) * 2021-12-23 2022-03-25 安徽皖通邮电股份有限公司 利用lldp实现以太网掉电通知的方法、存储介质及设备

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CN102238066A (zh) * 2010-04-27 2011-11-09 杭州华三通信技术有限公司 实时上报流量的方法、媒体终端及系统
CN102315970A (zh) * 2011-09-23 2012-01-11 北京星网锐捷网络技术有限公司 数据中心桥接参数配置方法、系统及网络设备

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Publication number Priority date Publication date Assignee Title
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