WO2021088802A1 - 多业务转发方法、交换机、电子设备及可读介质 - Google Patents

多业务转发方法、交换机、电子设备及可读介质 Download PDF

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Publication number
WO2021088802A1
WO2021088802A1 PCT/CN2020/126160 CN2020126160W WO2021088802A1 WO 2021088802 A1 WO2021088802 A1 WO 2021088802A1 CN 2020126160 W CN2020126160 W CN 2020126160W WO 2021088802 A1 WO2021088802 A1 WO 2021088802A1
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Prior art keywords
message
layer
port
vlan
translation table
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PCT/CN2020/126160
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English (en)
French (fr)
Inventor
林宁
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中兴通讯股份有限公司
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Priority to EP20884015.7A priority Critical patent/EP4044527A4/en
Publication of WO2021088802A1 publication Critical patent/WO2021088802A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/46—Interconnection of networks
    • H04L12/4641—Virtual LANs, VLANs, e.g. virtual private networks [VPN]
    • H04L12/4645—Details on frame tagging
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/46—Interconnection of networks
    • H04L12/4641—Virtual LANs, VLANs, e.g. virtual private networks [VPN]
    • H04L12/4645—Details on frame tagging
    • H04L12/465—Details on frame tagging wherein a single frame includes a plurality of VLAN tags
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/70—Admission control; Resource allocation
    • H04L47/82—Miscellaneous aspects
    • H04L47/825—Involving tunnels, e.g. MPLS
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L49/00—Packet switching elements
    • H04L49/60—Software-defined switches
    • H04L49/602—Multilayer or multiprotocol switching, e.g. IP switching
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/50—Routing or path finding of packets in data switching networks using label swapping, e.g. multi-protocol label switch [MPLS]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L49/00—Packet switching elements
    • H04L49/35—Switches specially adapted for specific applications
    • H04L49/354—Switches specially adapted for specific applications for supporting virtual local area networks [VLAN]

Definitions

  • the embodiment of the present invention relates to the field of network communication technology, and specifically relates to a multi-service forwarding method, a switch, an electronic device, and a readable medium.
  • QinQ (802.1Q in 802.1Q, two-layer VLAN encapsulation) technology is to encapsulate user packets with an operator VLAN Tag (Virtual Local Area Network, virtual local area network tag) before entering the operator network, so that the packet carries two layers
  • the VLAN Tag traverses the operator's network, and strips the VLAN Tag of the operator's network when the user message leaves the operator's network, so that the user message retains only the private network VLAN Tag in the user network.
  • QinQ technology effectively expands the number of VLANs, thereby alleviating the limitation of insufficient number of VLANs.
  • the switch can provide more ports for the communication network and is an important device for expanding the communication network.
  • Current switches can only replace or strip one layer of VLANTag when forwarding services.
  • the two-layer VLAN Tag will be directly replaced with the VLAN Tag of the destination port, or only the outer VLAN Tag will be replaced. Therefore, current switches cannot forward QinQ packets, which limits the flexibility of the communication network.
  • the embodiments of the present invention provide a multi-service forwarding method, a switch, an electronic device, and a readable medium to at least solve one of the related technical problems to a certain extent, including the problem caused by the current switch’s inability to forward QinQ packets.
  • the first aspect of the present invention provides a multi-service forwarding method for realizing the forwarding of different types of messages, including: using a message translation table to translate the format of an access message into a forwarded message corresponding to a forwarding port format.
  • a second aspect of the present invention provides a switch, including a port and a message translation module, the message translation module is signally connected to the port, and the message translation module is configured to use a message translation table to connect to the message The format is translated into the forwarding message format corresponding to the forwarding port.
  • a third aspect of the present invention provides an electronic device, including: one or more processors; a storage device, on which one or more programs are stored, wherein, when the one or more programs are used by the one or more The processor executes, so that the one or more processors implement the method provided according to the present invention.
  • the fourth aspect of the present invention provides a computer readable medium on which a computer program is stored, wherein the program is executed by a processor to implement the method provided according to the present invention.
  • Fig. 1 is a flowchart of a multi-service forwarding method provided by an embodiment of the present invention
  • Figure 2 is a flowchart of a multi-service forwarding method provided by an embodiment of the present invention
  • Figure 3 is a flowchart of a multi-service forwarding method provided by an embodiment of the present invention.
  • FIG. 4 is a block diagram of a switch provided by an embodiment of the present invention, which is used for illustration;
  • Fig. 5 is a schematic diagram of an electronic device provided by an embodiment of the present invention.
  • the multi-service forwarding method provided in this embodiment is mainly aimed at the current three-layer switch only supporting the forwarding of single-layer virtual local area network packets, and therefore cannot forward QinQ packets, which leads to the problem of insufficient flexibility of the communication network.
  • this embodiment provides a multi-service forwarding method for the switch to realize the forwarding of different types of messages.
  • the multi-service forwarding method uses a message translation table to translate the format of the access message into the format of the forwarded message corresponding to the forwarding port.
  • the switch accesses a multi-layer message and forwards it from the forwarding port of a single-layer VLAN message, it uses the message translation table to translate the multi-layer message into a single-layer VLAN message and then forwards it.
  • the switch accesses a single-layer VLAN message and forwards it from the multi-layer message forwarding port, it uses the message translation table to translate the single-layer VLAN message into a multi-layer message, and then forwards it.
  • the QinQ message is translated into a single-layer VLAN message suitable for the Layer 3 port by using the message translation table.
  • Layer 3 port forwarding when the QinQ port of the switch is connected to a QinQ message and the QinQ message is forwarded from the Layer 3 port, the QinQ message is translated into a single-layer VLAN message suitable for the Layer 3 port by using the message translation table. Layer 3 port forwarding.
  • the message translation table includes an ingress translation table and an egress translation table.
  • the ingress translation table is used to translate double-layer messages into single-layer VLAN messages; the egress translation table is used to translate single-layer VLAN messages.
  • the message is translated into a two-layer message.
  • the upstream message and the downstream message are respectively translated using the ingress translation table and the egress translation table.
  • the switch accesses the upstream QinQ message, it uses the entry translation table to translate the QinQ message into a single-layer VLAN message.
  • the switch accesses a downstream single-layer VLAN message, it uses the export translation table to translate the single-layer VLAN message into a QinQ message.
  • the ingress translation table translates the double-layer message into a single-layer VLAN message through replacement or stripping.
  • the outer VLAN 1001 inner VLAN 101 message is directly replaced with a single VLAN 101 message.
  • the entry translation table translates the message in a stripping manner, the inner or outer layer of the double-layer message can be stripped. For example, strip the outer VLAN 1001 of the outer VLAN 1001 and the inner VLAN 101 message to form a single-layer VLAN 101 message; or strip the inner layer of the outer VLAN 1001 and the inner VLAN 101 message to form a single-layer VLAN 1001 messages.
  • the egress translation table translates the single-layer VLAN message into a double-layer message by embedding an inner layer or adding an outer layer.
  • the inner VLAN 101 message is embedded in the single-layer VLAN 1001 message through the egress translation table to form the outer VLAN 1001 and the inner VLAN 101 message.
  • the method before the message forwarding is performed in the multi-service forwarding method, the method further includes configuring the message translation table according to the message access port and the forwarding port. That is, configure the chip of the switch.
  • MPLS Multi-Protocol Label Switching
  • MPLS Multi-Protocol Label Switching
  • the ingress translation table and the egress translation table need to be configured according to the QinQ port and the VTEP port respectively.
  • the ingress translation table is configured to translate the outer VLAN ID and the inner VLAN ID message is translated into a single VLAN message
  • the egress translation table is configured to match the outer VLAN ID and the inner VLAN ID message to the single VLAN ID message.
  • the method before configuring the message translation table according to the message access port and the forwarding port, the method further includes creating the message forwarding port.
  • the switch creates a forwarding port based on the destination address of the message. For example, create a Layer 3 port, MPLS port, or VSTEP port as needed.
  • the format of the access message is translated into the forwarding message format corresponding to the forwarding port by using the message translation table, which realizes the forwarding of multi-layer messages by the switch and improves the business scope of the switch , Increase the flexibility of the network.
  • the multi-service forwarding method provided in this embodiment can be applied to a switch, and can also be applied to other network elements, so as to improve the flexibility of the network.
  • the following takes a double-layer QinQ message as an example to introduce the multi-service forwarding method in detail.
  • Fig. 1 is a flowchart of a multi-service forwarding method provided by an embodiment of the present invention.
  • the multi-service forwarding method is to translate QinQ packets into single-layer VLAN packets and forward them according to the three-layer process, which specifically includes:
  • step S101 a three-layer port is created on the chip.
  • step S102 an entry translation table and an exit translation table are configured.
  • An ingress translation table and an egress translation table are configured on the chip, where the ingress translation table is configured to translate QinQ messages into single-layer VLAN messages.
  • the export translation table is configured to match single-layer VLAN packets into QinQ packets.
  • the QinQ message includes two VLAN IDs, that is, the inner VLAN ID and the outer VLAN ID.
  • the ID can be any value from 1 to 4096.
  • step S103 use the QinQ port to receive the QinQ message, and use the entry translation table to translate the QinQ message into a single-layer message.
  • the QinQ port receives QinQ packets, such as QinQ packets of outer VLAN 1001 and inner VLAN 101.
  • the ingress translation table can translate the outer VLAN 1001 inner VLAN 101 message into a single VLAN 101 message.
  • step S104 a single-layer VLAN message is sent out through the three-layer port.
  • the translated single-layer VLAN message enters the service access process through the Layer 3 port, and is forwarded normally according to the Layer 3 business process.
  • the multi-service forwarding method also includes:
  • step S105 a single-layer VLAN message is received by using a three-layer port, and the single-layer VLAN message is translated into a QinQ message by using an export translation table.
  • the switch receives single-layer VLAN packets through a layer-3 port, such as a single-layer VLAN 1001 packet received by a layer-3 port.
  • the egress translation table can add an inner VLAN ID to a single-layer VLAN message, which translates into an outer VLAN 1001 and an inner VLAN 101 message.
  • Step S106 Forward the QinQ message through the QinQ port.
  • the QinQ message translated by the export translation table is forwarded through the QinQ port and in accordance with the QinQ business process.
  • Fig. 2 is a flowchart of a multi-service forwarding method provided by an embodiment of the present invention.
  • the multi-service forwarding method is to translate QinQ packets into single-layer VLAN packets and forward them according to the Multi-Protocol Label Switching (MPLS) process, which specifically includes:
  • MPLS Multi-Protocol Label Switching
  • step S201 an MPLS port is created on the chip.
  • step S202 an entry translation table and an exit translation table are configured.
  • An ingress translation table and an egress translation table are configured on the chip, where the ingress translation table is configured to translate QinQ messages into single-layer VLAN messages.
  • the export translation table is configured to match single-layer VLAN packets into QinQ packets.
  • the QinQ message includes two VLAN IDs, that is, the inner VLAN ID and the outer VLAN ID.
  • the ID can be any value from 1 to 4096.
  • step S203 use the QinQ port to receive the QinQ message, and use the entry translation table to translate the QinQ message into a single-layer message.
  • the QinQ port receives QinQ packets, such as QinQ packets of outer VLAN 1001 and inner VLAN 101. Then, use the entry translation table to translate (or match) the QinQ message into a single-layer VLAN message, thereby mapping the QinQ service to the MPLS service, so that the QinQ message can enter the access process of the MPLS service and enter the subsequent MPLS service Process.
  • QinQ packets such as QinQ packets of outer VLAN 1001 and inner VLAN 101.
  • the ingress translation table can translate the outer VLAN 1001 inner VLAN 101 message into a single VLAN 101 message.
  • step S204 the single-layer VLAN message is forwarded to the outside through the MPLS port.
  • the translated single-layer VLAN message enters the service access process through the MPLS port, and is forwarded normally according to the three-layer service process.
  • the multi-service forwarding method also includes:
  • step S205 the MPLS port is used to receive the single-layer VLAN message, and the egress translation table is used to translate the single-layer VLAN message into a QinQ message.
  • the switch receives the single-layer VLAN message through the MPLS port, such as the single-layer VLAN 1001 message received by the MPLS port, and terminates the single-layer VLAN message.
  • the egress translation table can add an inner VLAN ID to a single-layer VLAN message, that is, translate it into an outer VLAN 1001 and an inner VLAN 101 message.
  • Step S206 forward the QinQ message through the QinQ port.
  • the QinQ message translated by the export translation table is forwarded through the QinQ port and in accordance with the QinQ business process.
  • Fig. 3 is a flowchart of a multi-service forwarding method provided by an embodiment of the present invention.
  • the multi-service forwarding method is to translate QinQ packets into single-layer VLAN packets and forward them according to the VXLAN (Virtual Extensible LAN) process, which specifically includes:
  • step S301 a VTAP port is created on the chip.
  • step S302 the entry translation table and the exit translation table are configured.
  • An ingress translation table and an egress translation table are configured on the chip, where the ingress translation table is configured to translate QinQ messages into single-layer VLAN messages.
  • the export translation table is configured to match single-layer VLAN packets into QinQ packets.
  • the QinQ message of D includes two VLAN IDs, namely the inner VLAN ID and the outer VLAN ID. The ID can be any value from 1 to 4096.
  • step S303 the VTEP port is used to receive the QinQ message, and the entry translation table is used to translate the QinQ message into a single-layer VLAN message.
  • the QinQ port receives QinQ packets, such as QinQ packets of outer VLAN 1001 and inner VLAN 101.
  • QinQ packets such as QinQ packets of outer VLAN 1001 and inner VLAN 101.
  • Use the entry translation table to translate (or match) the QinQ message into a single-layer VLAN message, thereby mapping the QinQ service to the VXLAN service, so that the QinQ message can enter the access process of the VXLAN service and enter the subsequent VXLAN service process.
  • the ingress translation table can translate the outer VLAN 1001 inner VLAN 101 message into a single VLAN 101 message.
  • step S304 the single-layer VLAN message is forwarded outward through the VTEP port.
  • the translated single-layer VLAN message enters the service access process through the VTEP port, and is forwarded normally according to the VXLAN service process.
  • the multi-service forwarding method When the switch needs to forward the single-layer VLAN message received by the VTEP port via the QinQ port, the multi-service forwarding method also includes:
  • step S305 the VTEP port is used to receive the single-layer VLAN message, and the egress translation table is used to translate the single-layer VLAN message into a QinQ message.
  • the switch receives single-layer VLAN packets through the VTEP port, such as the single-layer VLAN 1001 packets received by the VTEP port.
  • the egress translation table can add an inner VLAN ID to a single-layer VLAN message, that is, translate it into an outer VLAN 1001 and an inner VLAN 101 message.
  • Step S306 forward the QinQ message through the QinQ port.
  • the QinQ message translated by the export translation table is forwarded through the QinQ port and in accordance with the QinQ business process.
  • the format of the access message is translated into the forwarding message format corresponding to the forwarding port by using the message translation table, which realizes the forwarding of multi-layer messages by the switch and improves the business scope of the switch. Increase the flexibility of the network.
  • Fig. 4 is a block diagram of a switch provided by an embodiment of the present invention, which is used for illustration.
  • the switch can realize the forwarding of QinQ messages, thereby improving the flexibility of the communication network.
  • the switch includes an ingress translation module 401 and an egress translation module 402, where:
  • the ingress translation module 401 is used to translate the QinQ message into a single-layer VLAN message by using the ingress translation table.
  • the ingress translation table is stored in the ingress translation module 401 and is used to translate QinQ messages into single-layer VLAN messages.
  • the ingress translation module 401 translates the QinQ message into a single-layer VLAN message, which can be used to forward uplink data of network elements such as switches.
  • the export translation module 402 is used to translate a single-layer VLAN message into a QinQ message by using the export translation table.
  • the export translation table is stored in the export translation module 402, and can be used to translate a single-layer VLAN message into a QinQ message.
  • the egress translation table can be used to translate the terminated single-layer VLAN message into a QinQ message.
  • the egress translation module 402 converts a single-layer VLAN message into a QinQ message, which can be used for the forwarding of downlink data of network elements such as switches.
  • the switch further includes a QinQ port 403 and a single-layer VLAN port 404, where:
  • QinQ port 403 is used to receive and/or send QinQ packets.
  • the QinQ port can be only signally connected to the entry translation module 401 or the exit translation module 402, or can be connected to the entry translation module 401 and the exit translation module 402 at the same time.
  • the QinQ port 403 is only signally connected to the ingress translation module 401, and the QinQ port 403 is used to receive QinQ packets.
  • the switch only sends downlink data
  • the QinQ port 403 is only signally connected to the egress translation module 402, and the QinQ port 403 is used to send QinQ packets.
  • the QinQ port 403 is signally connected to the ingress translation module 401 and the egress translation module 402, and the QinQ port 403 is used to receive and send QinQ packets.
  • Single-layer VLAN port 404 is used to receive and/or send single-layer VLAN packets.
  • the single-layer VLAN port 404 may be only signally connected to the ingress translation module 401 or the egress translation module 402, or it can be connected to the ingress translation module 401 and the egress translation module 402 at the same time.
  • the switch only sends uplink data
  • the single-layer VLAN port 404 is only signally connected to the ingress translation module 401, and the single-layer VLAN port 404 is used to send a single-layer VLAN message.
  • the single-layer VLAN port 404 is only signally connected to the egress translation module 402, and the single-layer VLAN port 404 is used to receive single-layer VLAN packets.
  • the single-layer VLAN port 404 is signally connected to the ingress translation module 401 and the egress translation module 402, and the single-layer VLAN port 404 is used to send and receive single-layer VLAN packets.
  • the switch further includes a first configuration module, a second configuration module, a third configuration module, and a fourth configuration module, where:
  • the first configuration module is used to configure the QinQ port by using the multi-layer VLAN identifier.
  • the first configuration module can configure the QinQ port as a dual-layer VLAN ID port, or it can be set as a multi-layer VLAN ID port.
  • the second configuration module is used to configure a single-layer VLAN port by using a single-layer VLAN identifier.
  • the single-layer VLAN ports can be, but are not limited to, three-layer ports, MPLS ports, and VXLAN ports. Chips or network processors of network elements such as switches are configured to use outer VLAN 1001 to create single-layer VLAN ports.
  • the third configuration module is used to configure the entry translation table to translate the QinQ message into a single-layer VLAN message.
  • the third configuration module can configure the entry translation table to translate the double-layer VLAN ID into a single-layer VLAN ID, such as translating the outer VLAN 1001 and the inner VLAN 101 into a single-layer VLAN 101.
  • the fourth configuration module is used to configure the egress translation table to translate the terminated single-layer VLAN message into a QinQ message.
  • the fourth configuration module configures the export translation table, and the export translation table is configured to translate a single-layer VLAN ID into a double-layer VLAN ID.
  • the egress translation table can be used to add the inner VLAN ID to the outer VLAN ID message, such as translating the outer VLAN 1001 into the outer VLAN 1001 and the inner VLAN 101.
  • the ingress translation module 401 and the egress translation module 402 are two independent modules.
  • the entry translation module 401 and the exit translation module 42 may be one translation module, that is, the functions of the entry translation module 401 and the exit translation module 402 are integrated into one translation module, which can also translate QinQ messages into a single layer. VLAN messages, and translate single-layer VLAN messages into QinQ messages.
  • modules involved in this embodiment are all logical modules.
  • a logical unit can be a physical unit, a part of a physical unit, or multiple physical units.
  • this embodiment does not introduce units that are not closely related to solving the technical problems proposed by the present invention, but this does not indicate that there are no other units in this embodiment.
  • the switch provided in this embodiment uses the message translation table to translate the format of the access message into the forwarding message format corresponding to the forwarding port, which realizes the forwarding of multi-layer messages by the switch, improves the business scope of the switch, and increases the network performance. flexibility.
  • this embodiment also provides an electronic device, including one or more processors 501; a storage device 502, which stores one or more programs, when one or more programs are used by one or more processors 501 is executed, so that one or more processors 501 implement the QinQ service access provided in this embodiment. To avoid repetitive description, the specific steps of the multi-service forwarding method are not repeated here.
  • This embodiment also provides a computer-readable medium on which a computer program is stored.
  • the program is executed by a processor, the QinQ service access provided in this embodiment is implemented.
  • the multi-service forwarding method will not be repeated here. Specific steps.
  • the format of the access message is translated into the forwarding message format corresponding to the forwarding port by the message translation table, which realizes the exchange of multi-layer messages by the switch.
  • Forwarding improves the business scope of the switch and increases the flexibility of the network.
  • forwarding can be realized without occupying too much chip resources, and all normal switch service modules can be reused, making the forwarding of double-layer packets almost invisible, and enabling network elements such as switches to forward QinQ packets , Thereby increasing the flexibility of the network.
  • Such software may be distributed on a computer-readable medium, and the computer-readable medium may include a computer storage medium (or a non-transitory medium) and a communication medium (or a transitory medium).
  • the term computer storage medium includes volatile and non-volatile memory implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules, or other data). Sexual, removable and non-removable media.
  • Computer storage media include but are not limited to RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disk (DVD) or other optical disk storage, magnetic cassette, tape, magnetic disk storage or other magnetic storage device, or Any other medium used to store desired information and that can be accessed by a computer.
  • a communication medium usually contains computer-readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transmission mechanism, and may include any information delivery medium. .

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Abstract

一种多业务转发方法、交换机、电子设备及可读介质。所述多业务转发方法用于实现不同类型报文的转发，所述方法包括利用报文翻译表将接入报文的格式翻译为转发端口对应的转发报文格式。

Description

多业务转发方法、交换机、电子设备及可读介质
相关申请的交叉引用
本申请基于申请号为201911081160.2、申请日为2019年11月07日的中国专利申请提出，并要求该中国专利申请的优先权，该中国专利申请的全部内容在此引入本申请作为参考。
技术领域
本发明实施例涉及网络通信技术领域，具体涉及一种多业务转发方法、交换机、电子设备及可读介质。
背景技术
QinQ(802.1Q in 802.1Q，两层VLAN封装)技术是将用户报文在进入运营商网络之前封装上一个运营商VLAN Tag(Virtual Local Area Network，虚拟局域网标签)，使报文带着两层VLAN Tag穿越运营商网络，并在用户报文离开运营商网络时，剥去运营商网络的VLAN Tag，从而使用户报文在用户网络中仅保留私网VLAN Tag。QinQ技术有效地扩大了VLAN的数目，从而缓解了VLAN数量不足的局限性。
交换机能为通信网络提供更多的端口，是扩大通信网络的重要装置。目前的交换机在业务转发时，只能对一层VLANTag进行替换或剥离操作。但是，在转发QinQ报文时，由于各厂家芯片功能的差异会直接将两层VLAN Tag替换为目的端口的VLAN Tag，或者仅将外层VLAN Tag替换。因此，目前的交换机无法转发QinQ报文，限制了通信网络的灵活性。
发明内容
为此，本发明实施例提供一种多业务转发方法、交换机、电子设备及可读介质，以至少在一定程度上解决相关的技术问题之一，包括由于目前的交换机无法转发QinQ报文导致的通信网络灵活性不足的问题。
有鉴于此，本发明第一方面提供一种多业务转发方法，用于实现不同类型报文的转发，包括：利用报文翻译表将接入报文的格式翻译为转发端口对应的转发报文格式。
本发明第二方面提供一种交换机，包括端口和报文翻译模块，所述报文翻译模块与所述端口信号连接，所述报文翻译模块用于利用报文翻译表将接入报文的格式翻译为转发端口对应的转发报文格式。
本发明第三方面提供一种电子设备，包括：一个或多个处理器；存储装置，其上存储 有一个或多个程序，其中，当所述一个或多个程序被所述一个或多个处理器执行，使得所述一个或多个处理器实现根据本发明提供的方法。
本发明第四方面提供一种计算机可读介质，其上存储有计算机程序，其中，所述程序被处理器执行时实现根据本发明提供的所述方法。
附图说明
附图是用来提供对本发明的进一步理解，并且构成说明书的一部分，与下面的具体实施方式一起用于解释本发明，但并不构成对本发明的限制。
图1为本发明实施例提供的一种多业务转发方法的流程图；
图2为本发明实施例提供的一种多业务转发方法的流程图；
图3为本发明实施例提供的一种多业务转发方法的流程图；
图4为本发明实施例提供的一种交换机的框图，用于举例说明；
图5为本发明实施例提供的一种电子设备的示意图。
在附图中：
401：入口翻译模块
402：出口翻译模块
403：QinQ端口
404：单层VLAN端口
具体实施方式
以下结合附图对本发明的具体实施方式进行详细说明。应当理解的是，此处所描述的具体实施方式仅用于说明和解释本发明，并不用于限制本发明。
本实施例提供的多业务转发方法主要是针对目前的三层交换机仅支持单层虚拟局域网报文的转发，因此无法转发QinQ报文，导致通信网络的灵活性不足的问题。
为使三层交换机能转发QinQ报文，提高通信网络的灵活性，本实施例提供一种用于交换机的多业务转发方法，以实现不同类型报文的转发。
在一个实施例中，多业务转发方法是利用报文翻译表将接入报文的格式翻译为转发端口对应的转发报文格式。当交换机接入多层报文，并从单层VLAN报文的转发端口转发时，利用报文翻译表将该多层报文翻译为单层VLAN报文，然后转发。当交换机接入单层VLAN报文，并从多层报文转发端口转发时，利用报文翻译表将该单层VLAN报文翻译为多层报文，然后转发。
例如，当交换机的QinQ端口接入QinQ报文，并将该QinQ报文从三层端口转发时，利用报文翻译表将QinQ报文翻译为适合三层端口的单层VLAN报文，然后由三层端口转 发。
在一些实施例中，报文翻译表包括入口翻译表和出口翻译表，其中，入口翻译表，用于将双层报文翻译成单层VLAN报文；出口翻译表，用于将单层VLAN报文翻译为双层报文。换言之，上行报文和下行报文分别利用入口翻译表和出口翻译表翻译。当交换机接入上行的QinQ报文时，利用入口翻译表将QinQ报文翻译为单层VLAN报文。当交换机接入下行的单层VLAN报文时，利用出口翻译表将单层VLAN报文翻译为QinQ报文。
在一些实施例中，入口翻译表是通过替换或剥离方式将所述双层报文翻译成单层VLAN报文。例如，将外层VLAN 1001内层VLAN 101报文直接替换为单层VLAN 101报文。入口翻译表通过剥离方式翻译报文时，可以将所述双层报文的内层或外层剥离。例如，将外层VLAN 1001内层VLAN 101报文的外层VLAN 1001剥离，形成单层VLAN 101报文；或者，将外层VLAN 1001内层VLAN 101报文的内层剥离，形成单层VLAN 1001报文。
在一些实施例中，出口翻译表通过嵌入内层或添加外层方式将所述单层VLAN报文翻译为双层报文。例如，通过出口翻译表在单层VLAN 1001报文内侧嵌入内层VLAN 101报文，形成外层VLAN 1001内层VLAN 101报文。
在一些实施例中，在多业务转发方法在进行报文转发之前，还包括按照报文接入端口和转发端口配置所述报文翻译表。即，对交换机的芯片进行配置。当交换机用于将接入的QinQ报文按照多协议交换标签端口(Multi-Protocol Label Switching，简称MPLS)转发流程转发时，需要按照QinQ端口和MPLS端口分别配置入口翻译表和出口翻译表。例如，将入口翻译表配置成外层VLAN ID(identify,标识)内层VLAN ID报文翻译为单层VLAN报文，出口翻译表配置成单层VLAN报文匹配外层VLAN ID内层VLAN ID报文。当交换机用于将接入的QinQ报文按照可扩展虚拟局域网(Virtual Extensible LAN，简称VXLAN)转发流程转发时，需要按照QinQ端口和VTEP端口分别配置入口翻译表和出口翻译表。例如，将入口翻译表配置成外层VLAN ID内层VLAN ID报文翻译为单层VLAN报文，将出口翻译表配置成单层VLAN报文匹配外层VLAN ID内层VLAN ID报文。
在一些实施例中，在按照报文接入端口和转发端口配置所述报文翻译表之前，还包括创建所述报文转发端口。交换机根据报文目的地址创建转发端口。例如，根据需要创建三层端口、MPLS端口或VSTEP端口。
本发明实施例提供的多业务转发方法，利用报文翻译表将接入报文的格式翻译为转发端口对应的转发报文格式，实现了交换机对多层报文的转发，提高交换机的业务范围，增加网络的灵活性。
需要说明的是，本实施例提供的多业务转发方法可应用于交换机，也可以用于其它网元，提高网络的灵活性。
为了更好地理解本发明实施例，下面以双层QinQ报文为例，详细介绍多业务转发方法。
图1为本发明实施例提供的一种多业务转发方法的流程图。如图1所示，多业务转发方法是将QinQ报文翻译为单层VLAN报文并按照三层流程转发，具体包括：
在步骤S101中，在芯片上创建三层端口。
在交换机的芯片上创建三层端口，以接收或转发单层VLAN报文。
在步骤S102中，配置入口翻译表和出口翻译表。
在芯片上配置入口翻译表和出口翻译表，其中，入口翻译表配置成将QinQ报文翻译为单层VLAN报文。出口翻译表配置成将单层VLAN报文匹配成QinQ报文。其中，QinQ报文包括两层VLAN ID，即内层VLAN ID和外层VLAN ID。其中ID可以是1～4096任意一个值。
在步骤S103中，利用QinQ端口接收QinQ报文，并利用入口翻译表将QinQ报文翻译成单层报文。
QinQ端口接收QinQ报文，如接收到外层VLAN 1001内层VLAN 101的QinQ报文。
利用入口翻译表将QinQ报文翻译(或匹配)成单层VLAN报文，从而将QinQ业务映射到三层业务中，使QinQ报文能够进入三层业务的接入流程，进入后续的三层业务流程。
例如，当QinQ报文为外层VLAN 1001内层VLAN 101报文时，入口翻译表可以将外层VLAN 1001内层VLAN 101报文翻译为单层VLAN 101报文。
在步骤S104中，通过三层端口向外发送单层VLAN报文。
将翻译后的单层VLAN报文通过三层端口进入业务接入流程，按照三层业务流程正常转发。
当交换机需要将三层端口接收的单层VLAN报文经QinQ端口转发时，多业务转发方法还包括：
在步骤S105中，利用三层端口接收单层VLAN报文，利用出口翻译表将单层VLAN报文翻译成QinQ报文。
交换机通过三层端口接收单层VLAN报文，如三层端口接收到的单层VLAN 1001报文。
其中，出口翻译表可以在单层VLAN报文中增加一个内层VLAN ID，即翻译为外层 VLAN 1001内层VLAN 101报文。
步骤S106，通过QinQ端口转发QinQ报文。
出口翻译表翻译的QinQ报文通过QinQ端口并按照QinQ业务流程转发。
图2为本发明实施例提供的一种多业务转发方法的流程图。如图2所示，多业务转发方法是将QinQ报文翻译为单层VLAN报文并按照多协议标签交换(Multi-Protocol Label Switching，MPLS)流程转发，具体包括：
在步骤S201中，在芯片上创建MPLS端口。
在交换机的芯片上创建MPLS端口，以接收或转发单层VLAN报文。
在步骤S202中，配置入口翻译表和出口翻译表。
在芯片上配置入口翻译表和出口翻译表，其中，入口翻译表配置成将QinQ报文翻译为单层VLAN报文。出口翻译表配置成将单层VLAN报文匹配成QinQ报文。其中，QinQ报文包括两层VLAN ID，即内层VLAN ID和外层VLAN ID。其中ID可以是1～4096任意一个值。
在步骤S203中，利用QinQ端口接收QinQ报文，并利用入口翻译表将QinQ报文翻译成单层报文。
QinQ端口接收QinQ报文，如接收到外层VLAN 1001内层VLAN 101的QinQ报文。然后，利用入口翻译表将QinQ报文翻译(或匹配)成单层VLAN报文，从而将QinQ业务映射到MPLS业务中，使QinQ报文能够进入MPLS业务的接入流程，进入后续的MPLS业务流程。
例如，当QinQ报文为外层VLAN 1001内层VLAN 101报文时，入口翻译表可以将外层VLAN 1001内层VLAN 101报文翻译为单层VLAN 101报文。
在步骤S204中，通过MPLS端口向外转发单层VLAN报文。
将翻译后的单层VLAN报文通过MPLS端口进入业务接入流程，按照三层业务流程正常转发。
当交换机需要将MPLS端口接收的单层VLAN报文经QinQ端口转发时，多业务转发方法还包括：
在步骤S205中，利用MPLS端口接收单层VLAN报文，并利用出口翻译表将单层VLAN报文翻译成QinQ报文。
交换机通过MPLS端口接收单层VLAN报文，如MPLS端口接收到的单层VLAN 1001报文，将单层VLAN报文终结。其中，出口翻译表可以在单层VLAN报文中增加一个内层VLAN ID，即翻译为外层VLAN 1001内层VLAN 101报文。
步骤S206，通过QinQ端口转发QinQ报文。
出口翻译表翻译的QinQ报文通过QinQ端口并按照QinQ业务流程转发。
图3为本发明实施例提供的一种多业务转发方法的流程图。如图3所示，多业务转发方法是将QinQ报文翻译为单层VLAN报文并按照VXLAN(Virtual Extensible LAN，可扩展虚拟局域网)流程转发，具体包括：
在步骤S301中，在芯片上创建VTAP端口。
在交换机的芯片上创建VTEP端口，以接收或转发单层VLAN报文。
在步骤S302中，配置入口翻译表和出口翻译表。
在芯片上配置入口翻译表和出口翻译表，其中，入口翻译表配置成将QinQ报文翻译为单层VLAN报文。出口翻译表配置成将单层VLAN报文匹配成QinQ报文。其中D的QinQ报文包括两层VLAN ID，即内层VLAN ID和外层VLAN ID。其中ID可以是1～4096任意一个值。
在步骤S303中，利用VTEP端口接收QinQ报文，并利用入口翻译表将QinQ报文翻译成单层VLAN报文。
QinQ端口接收QinQ报文，如接收到外层VLAN 1001内层VLAN 101的QinQ报文。利用入口翻译表将QinQ报文翻译(或匹配)成单层VLAN报文，从而将QinQ业务映射到VXLAN业务中，使QinQ报文能够进入VXLAN业务的接入流程，进入后续的VXLAN业务流程。
例如，当QinQ报文为外层VLAN 1001内层VLAN 101报文时，入口翻译表可以将外层VLAN 1001内层VLAN 101报文翻译为单层VLAN 101报文。
在步骤S304中，通过VTEP端口向外转发单层VLAN报文。
将翻译后的单层VLAN报文通过VTEP端口进入业务接入流程，按照VXLAN业务流程正常转发。
当交换机需要将VTEP端口接收的单层VLAN报文经QinQ端口转发时，多业务转发方法还包括：
在步骤S305中，利用VTEP端口接收单层VLAN报文，并利用出口翻译表将单层VLAN报文翻译成QinQ报文。
交换机通过VTEP端口接收单层VLAN报文，如VTEP端口接收到的单层VLAN 1001报文。其中，出口翻译表可以在单层VLAN报文中增加一个内层VLAN ID，即翻译为外层VLAN 1001内层VLAN 101报文。
步骤S306，通过QinQ端口转发QinQ报文。
出口翻译表翻译的QinQ报文通过QinQ端口并按照QinQ业务流程转发。
需要说明的是，上面各种方法的步骤划分，只是为了描述清楚，实现时可以合并为一个步骤或者对某些步骤进行拆分，分解为多个步骤，只要包括相同的逻辑关系，都在本专利的保护范围内；对算法中或者流程中添加无关紧要的修改或者引入无关紧要的设计，但不改变其算法和流程的核心设计都在该专利的保护范围内。
上述实施例提供的多业务转发方法，利用报文翻译表将接入报文的格式翻译为转发端口对应的转发报文格式，实现了交换机对多层报文的转发，提高交换机的业务范围，增加网络的灵活性。
图4为本发明实施例提供的一种交换机的框图，用于举例说明。该交换机可实现QinQ报文的转发，从而提高通信网络的灵活性。
如图4所示，交换机包括入口翻译模块401和出口翻译模块402，其中：
入口翻译模块401，用于利用入口翻译表将QinQ报文翻译成单层VLAN报文。其中的入口翻译表存储在入口翻译模块401内，用于QinQ报文翻译成单层VLAN报文。
在一些实施例中，入口翻译模块401将QinQ报文翻译为单层VLAN报文，可用于交换机等网元的上行数据的转发。
出口翻译模块402，用于利用出口翻译表将单层VLAN报文翻译成QinQ报文。其中的出口翻译表存储在出口翻译模块402内，可用于将单层VLAN报文翻译为QinQ报文。在一些实施例中，利用出口翻译表可在终结的单层VLAN报文翻译成QinQ报文。
在一些实施例中，出口翻译模块402将单层VLAN报文转化为QinQ报文，可用于交换机等网元的下行数据的转发。
在一些实施例中，交换机还包括QinQ端口403和单层VLAN端口404，其中：
QinQ端口403，用于接收和/或发送QinQ报文。
其中，QinQ端口可以仅与入口翻译模块401或出口翻译模块402信号连接，也可以同时连接入口翻译模块401和出口翻译模块402。当交换机仅进行上行数据发送时，QinQ端口403仅与入口翻译模块401信号连接，而且QinQ端口403用于接收QinQ报文。当交换机仅进行下行数据发送时，QinQ端口403仅与出口翻译模块402信号连接，而且QinQ端口403用于发送QinQ报文。当交换机需要对上行和下行数据发送时，QinQ端口403与入口翻译模块401和出口翻译模块402信号连接，而且QinQ端口403用于接收和发送QinQ报文。
单层VLAN端口404，用于接收和/或发送单层VLAN报文。
其中，单层VLAN端口404可以仅与入口翻译模块401或出口翻译模块402信号连接， 也可以同时连接入口翻译模块401和出口翻译模块402。当交换机仅进行上行数据发送时，单层VLAN端口404仅与入口翻译模块401信号连接，而且单层VLAN端口404用于发送单层VLAN报文。当交换机仅进行下行数据发送时，单层VLAN端口404仅与出口翻译模块402信号连接，而且单层VLAN端口404用于接收单层VLAN报文。当交换机需要对上行和下行数据转发时，单层VLAN端口404与入口翻译模块401和出口翻译模块402信号连接，而且单层VLAN端口404用于发送和接收单层VLAN报文。
在一些实施例中，交换机还包括第一配置模块、第二配置模块、第三配置模块和第四配置模块，其中：
第一配置模块，用于利用多层VLAN标识配置QinQ端口。其中的第一配置模块可以将QinQ端口配置为双层VLAN ID端口，也可以设置成更多层VLAN ID端口。
第二配置模块，用于利用单层VLAN标识配置单层VLAN端口。其中的单层VLAN端口可以但不限于三层端口、MPLS端口和VXLAN端口。交换机等网元的芯片或网络处理器被配置为使用外层VLAN 1001创建单层VLAN端口。
第三配置模块，用于配置入口翻译表，以将QinQ报文翻译成单层VLAN报文。其中的第三配置模块可以将入口翻译表配置成将双层VLAN ID翻译成单层VLAN ID，如将外层VLAN 1001内层VLAN 101翻译成单层VLAN 101。
第四配置模块，用于配置出口翻译表，以在终结的单层VLAN报文翻译成QinQ报文。其中的第四配置模块配置出口翻译表，出口翻译表被配置成单层VLAN ID翻译成双层VLAN ID。在一些实施例中，利用出口翻译表可在外层VLAN ID报文中增加内层VLAN ID，如将外层VLAN 1001翻译为外层VLAN 1001内层VLAN 101。
在上述实施例的交换机中，入口翻译模块401和出口翻译模块402是两个相互独立的模块。在一些实施例中，入口翻译模块401和出口翻译模块42可以是一个翻译模块，即将入口翻译模块401和出口翻译模块402的功能集成在一个翻译模块，同样能够实现将QinQ报文翻译为单层VLAN报文，以及将单层VLAN报文翻译为QinQ报文。
需要说明的是，本实施方式中所涉及到的各模块均为逻辑模块，在实际应用中，一个逻辑单元可以是一个物理单元，也可以是一个物理单元的一部分，还可以以多个物理单元的组合实现。此外，为了突出本发明的创新部分，本实施方式中并没有将与解决本发明所提出的技术问题关系不太密切的单元引入，但这并不表明本实施方式中不存在其它的单元。
本实施例提供的交换机，利用报文翻译表将接入报文的格式翻译为转发端口对应的转发报文格式，实现了交换机对多层报文的转发，提高交换机的业务范围，增加网络的灵活性。
参照图5，本实施例还提供一种电子设备，包括一个或多个处理器501；存储装置502，其上存储有一个或多个程序，当一个或多个程序被一个或多个处理器501执行，使得一个或多个处理器501实现本实施例提供的QinQ业务接入，为避免重复描述，在此不再赘述多业务转发方法的具体步骤。
本实施例还提供一种计算机可读介质，其上存储有计算机程序，程序被处理器执行时实现本实施例提供的QinQ业务接入，为避免重复描述，在此不再赘述多业务转发方法的具体步骤。
本发明实施例提供的多业务转发方法、电子设备及可读介质，利用报文翻译表将接入报文的格式翻译为转发端口对应的转发报文格式，实现了交换机对多层报文的转发，提高交换机的业务范围，增加网络的灵活性。另外，不需占用过多的芯片资源即可实现转发，而且可以复用所有正常的交换机业务模块，使双层报文的转发几乎不可见，并且可以使交换机等网元实现QinQ报文的转发，从而增加网络的灵活性。
本领域普通技术人员可以理解，上文中所公开方法中的全部或某些步骤、系统、装置中的功能模块/单元可以被实施为软件、固件、硬件及其适当的组合。在硬件实施方式中，在以上描述中提及的功能模块/单元之间的划分不一定对应于物理组件的划分；例如，一个物理组件可以具有多个功能，或者一个功能或步骤可以由若干物理组件合作执行。某些物理组件或所有物理组件可以被实施为由处理器，如中央处理器、数字信号处理器或微处理器执行的软件，或者被实施为硬件，或者被实施为集成电路，如专用集成电路。这样的软件可以分布在计算机可读介质上，计算机可读介质可以包括计算机存储介质(或非暂时性介质)和通信介质(或暂时性介质)。如本领域普通技术人员公知的，术语计算机存储介质包括在用于存储信息(诸如计算机可读指令、数据结构、程序模块或其它数据)的任何方法或技术中实施的易失性和非易失性、可移除和不可移除介质。计算机存储介质包括但不限于RAM、ROM、EEPROM、闪存或其它存储器技术、CD-ROM、数字多功能盘(DVD)或其它光盘存储、磁盒、磁带、磁盘存储或其它磁存储装置、或者可以用于存储期望的信息并且可以被计算机访问的任何其它的介质。此外，本领域普通技术人员公知的是，通信介质通常包含计算机可读指令、数据结构、程序模块或者诸如载波或其它传输机制之类的调制数据信号中的其它数据，并且可包括任何信息递送介质。
需要说明的是，在本文中，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者装置不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者装置所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除 在包括该要素的过程、方法、物品或者装置中还存在另外的相同要素。
本领域的技术人员能够理解，尽管在此所述的一些实施例包括其它实施例中所包括的某些特征而不是其它特征，但是不同实施例的特征的组合意味着处于本实施例的范围之内并且形成不同的实施例。
可以理解的是，以上实施方式仅仅是为了说明本发明的原理而采用的一些实施方式，然而本发明并不局限于此。对于本领域内的普通技术人员而言，在不脱离本发明的范围和实质的情况下，可以做出各种变型和改进，这些变型和改进也视为本发明的保护范围。

Claims (10)

  1. 一种多业务转发方法，用于实现不同类型报文的转发，包括：
    利用报文翻译表将接入报文的格式翻译为转发端口对应的转发报文格式。
  2. 根据权利要求1所述方法，其中，所述报文翻译表包括：
    入口翻译表，用于将双层报文翻译成单层VLAN报文；
    出口翻译表，用于将单层VLAN报文翻译为双层报文。
  3. 根据权利要求2所述方法，其中，所述入口翻译表通过替换或剥离方式将所述双层报文翻译成单层VLAN报文。
  4. 根据权利要求2所述方法，其中，所述出口翻译表通过嵌入内层或添加外层方式将所述单层VLAN报文翻译为双层报文。
  5. 根据权利要求2所述方法，其中，所述双层报文为QinQ报文。
  6. 根据权利要求1至5任意一项所述方法，在所述的利用报文翻译表将接入报文的格式翻译为转发端口对应的转发报文格式并完成转发的步骤之前，还包括：
    按照报文接入端口和转发端口配置所述报文翻译表。
  7. 根据权利要求6所述方法，在所述的按照报文接入端口和转发端口配置所述报文翻译表的步骤之前，还包括：
    创建所述报文转发端口。
  8. 根据权利要求7所述方法，其中，所述转发端口包括三层端口、多协议交换标签端口和可扩展虚拟局域网端口。
  9. 一种电子设备，包括：
    一个或多个处理器；
    存储装置，其上存储有一个或多个程序，其中，当所述一个或多个程序被所述一个或多个处理器执行，使得所述一个或多个处理器实现根据权利要求1-8任意一项所述的方法。
  10. 一种计算机可读介质，其上存储有计算机程序，其中，所述程序被处理器执行时实现根据权利要求1-8任意一项所述的方法。
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