CN112311648B - Multi-optical-port communication method, device, equipment and storage medium - Google Patents

Multi-optical-port communication method, device, equipment and storage medium Download PDF

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CN112311648B
CN112311648B CN202011223525.3A CN202011223525A CN112311648B CN 112311648 B CN112311648 B CN 112311648B CN 202011223525 A CN202011223525 A CN 202011223525A CN 112311648 B CN112311648 B CN 112311648B
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vlan
data packet
optical
optical port
port
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CN112311648A (en
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李秉荣
方彬浩
陈炳锐
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Comba Network Systems Co Ltd
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Comba Network Systems Co Ltd
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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
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0061—Error detection codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00—Network arrangements, protocols or services for addressing or naming
    • H04L61/50—Address allocation
    • H04L61/5007—Internet protocol [IP] addresses
    • H04L61/5014—Internet protocol [IP] addresses using dynamic host configuration protocol [DHCP] or bootstrap protocol [BOOTP]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • H04Q11/0067—Provisions for optical access or distribution networks, e.g. Gigabit Ethernet Passive Optical Network (GE-PON), ATM-based Passive Optical Network (A-PON), PON-Ring
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00—Network arrangements, protocols or services for addressing or naming
    • H04L61/50—Address allocation
    • H04L61/5046—Resolving address allocation conflicts; Testing of addresses

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Optical Communication System (AREA)
  • Small-Scale Networks (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

The invention discloses a multi-optical-port communication method, a device, equipment and a storage medium, wherein the method comprises the following steps: presetting Vlan ID of a plurality of optical ports; and when a data packet transmitted by one optical port is acquired, transmitting the data packet to a corresponding application layer according to the Vlan ID corresponding to the optical port. The data packet can be distinguished from data packets transmitted by other optical ports through the identifier Vlan ID corresponding to the optical port, because the frequency bands of signals transmitted by different optical ports are different, application layers of the data packets transmitted by different optical ports, which need information interaction, are different, and the data packet can be transmitted to the application layer corresponding to the optical port through the unique Vlan ID for information interaction; the method provided by the invention realizes multi-optical-port communication through the mapping relation between the preset Vlan ID and the optical port without configuring or modifying any opposite end or next-stage unit/equipment, and the MAC address of any unit/equipment is not changed in the whole transmission process of the data packet, thereby avoiding the problem of MAC address conflict.

Description

Multi-optical-port communication method, device, equipment and storage medium
Technical Field
The present invention relates to the field of optical fiber communication, and more particularly, to a multi-optical-port communication method, apparatus, device, and storage medium.
Background
In a communication system, a Digital radio Remote system grru (GSM Digital Remote RF units) is a wireless network coverage device that digitizes a GSM Um port signal by using a software radio technology, transmits the signal to a Remote end through an optical fiber, and performs regenerative amplification by using a Remote radio frequency unit to realize Remote coverage of a base station signal. The GRRU is a product which successfully applies the RRU technology widely applied in 3G to a GSM system, and provides an effective solution for network coverage engineering and optimization. The digital radio remote unit DRU can transmit signals to the next digital remote unit DRU of the digital remote unit DRU through optical fibers in a daisy chain or other cascade connection mode, so that large-area signal coverage is realized, and the large-area signal coverage is realized through an optical fiber interface during optical fiber transmission.
In a conventional digital radio remote unit (DRU), a digital access unit (DRAU) and a Digital Remote Unit (DRU) temporarily do not realize signal transmission between a plurality of optical ports (optical fiber interfaces), and the implementation of multi-optical port transmission is mainly to solve the problem of identifying each optical port. Related improvements are also made on multi-optical-port transmission in the prior art, wherein one improvement mode is as follows: if the previous-stage unit (referred to as a near-end unit) is a device for multi-optical-port transmission, the previous-stage unit can identify a plurality of optical ports by using the MAC address of the next-stage unit when the previous-stage unit performs data transmission with each next-stage unit by controlling the generation of the MAC address of the next-stage unit (referred to as a far-end unit). However, the premise that the previous stage unit is suitable for the method is that the next stage unit connected with the previous stage unit is a single optical port transmission device, and the optical port is only correspondingly transmitted to one fixed optical port of the previous stage unit, and the MAC address of the next stage unit can be changed to distinguish the information transmitted by each optical port on the premise, but the next stage unit is also a multi-optical port transmission device, and the plurality of optical ports of the next stage unit are not only correspondingly transmitted to one fixed optical port of the previous stage unit, but also transmitted to the plurality of optical ports of the previous stage unit, and under the condition, the previous stage unit cannot realize multi-optical port transmission by reconfiguring/changing the unique MAC address of the next stage unit; secondly, changing MAC address to carry out optical port identification is easy to generate MAC address conflict when a plurality of units are cascaded; finally, although the improved method realizes the multi-optical port transmission of the previous-stage unit, the method relates to the configuration and improvement of the next-stage unit, for example, the previous-stage unit needs to be additionally connected with more next-stage units, and the configuration of more next-stage units needs to be repeated, so that the improved method is not perfect and is not practical.
Disclosure of Invention
The present invention is directed to overcoming at least one of the above-mentioned drawbacks of the prior art and providing a multi-optical-port communication method, apparatus, device and storage medium for enabling communication between a multi-optical-port and a multi-optical-port unit/device while preserving a globally unique MAC address of the unit/device.
The technical scheme adopted by the invention is as follows:
a method of multi-port communication, the method comprising: presetting Vlan ID of a plurality of optical ports; and when a data packet transmitted by one optical port is acquired, transmitting the data packet to a corresponding application layer according to the Vlan ID corresponding to the optical port.
A unique Vlan ID is configured for each optical port in advance, the Vlan ID serves as an identifier of each optical port, a one-to-one mapping relation is formed between the Vlan ID and the corresponding optical port, the Vlan ID refers to different virtual local area networks, and therefore the local area networks used by each optical port are different, namely IP addresses are different. When a data packet is transmitted from an optical port to an application layer, the data packet can be distinguished from data packets transmitted from other optical ports by using an identifier Vlan ID corresponding to the optical port. The method provided by the invention does not relate to the change of MAC addresses, the transmission between the multi-optical-port unit/equipment and the multi-optical-port unit/equipment can be realized by utilizing the Vlan ID, the configuration or modification of the opposite end of the multi-optical-port unit/equipment or the next-stage unit/equipment is not needed, and meanwhile, the MAC address conflict problem can not occur when a plurality of units/equipment are cascaded because the MAC addresses of any unit/equipment are not changed in the whole transmission process of a data packet.
Further, the data packet is transmitted to a corresponding application layer according to the Vlan ID corresponding to the optical port, specifically: and adding the Vlan ID corresponding to the optical port into the data packet, and transmitting the data packet added with the Vlan ID to a corresponding application layer according to the Vlan ID in the data packet.
The specific process of identifying the optical port of the incoming data packet by the Vlan ID is as follows: when a data packet transmitted by a certain optical port is acquired, firstly, the Vlan ID corresponding to the optical port is determined through the mapping relation between the optical port and the Vlan ID, the determined Vlan ID is added into the transmitted data packet, the transmission of the data packet is carried out on the basis of a general or a certain specific protocol stack, the data packet is transmitted to an application layer by layer through the protocol stack after being transmitted through the optical port, and in the process, other layers except the application layer in communication transmission can distinguish the data packets transmitted by other optical ports through the existing Vlan ID in the data packet, so that the data packet is quickly and accurately transmitted to the corresponding application layer.
Further, when a response data packet transmitted by the application layer is acquired, the Vlan ID in the response data packet is analyzed, and the response data packet is transmitted through an optical port corresponding to the analyzed Vlan ID.
After receiving a data packet transmitted by a certain optical port, the application layer sends out a response data packet responding to the data packet, and the response data packet contains the IP address of the responded optical port because the response data packet is a data packet responding to the prior transmission of the certain optical port. Each layer of the protocol stack can automatically add related information transmitted through Vlan to the response data packet during transmission, wherein a corresponding Vlan ID is added to the response data packet according to the IP address of the optical port, namely the mapping relation between the optical port and the Vlan ID, so that after the response data packet transmitted through the protocol stack contains the Vlan ID corresponding to the IP address of the optical port, the Vlan ID in the response data packet is obtained through analysis, the optical port to which the response data packet should be transmitted can be determined according to the mapping relation between the optical port and the Vlan ID, and the response data packet is transmitted from the corresponding optical port.
Further, the transmitting the response packet through the optical port corresponding to the analyzed Vlan ID specifically includes: and deleting the analyzed Vlan ID from the response packet, and transmitting the response packet with the Vlan ID deleted through the optical port corresponding to the analyzed Vlan ID.
After the Vlan ID in the response data packet is analyzed, the Vlan ID is deleted from the response data packet, and then the response data packet is output from the corresponding optical port, because the Vlan ID is only used for optical port identification and distinction in the transmission process from the optical port to the application layer, that is, the Vlan ID is no longer needed as an identifier after the response data packet is output from the optical port (to the opposite end), before the response data packet is output, the Vlan ID in the response data packet is analyzed and obtained, and then the Vlan ID is deleted from the response data packet, so that the response data packet output to the opposite end is ensured to only keep useful information needed by the opposite end.
Further, adding the Vlan ID corresponding to the optical port to the data packet, and transmitting the data packet to which the Vlan ID is added to a corresponding application layer according to the Vlan ID in the data packet, specifically: and adding the Vlan ID corresponding to the optical port into the data packet, regenerating the cyclic redundancy check code of the data packet added with the Vlan ID, and transmitting the data packet regenerated with the cyclic redundancy check code to a corresponding application layer according to the Vlan ID in the data packet.
After the Vlan ID is added to the data packet transmitted to the optical port, the cyclic redundancy check code of the data packet is regenerated, the cyclic redundancy check code generated by the data packet is ensured to contain the added Vlan ID, and when the application layer checks the information of the data packet by using the check code when receiving the data packet, the checked information can contain the Vlan ID together, so that the integrity of the check is ensured.
Further, deleting the analyzed Vlan ID from the response packet, and transmitting the response packet from which the Vlan ID is deleted through the optical port corresponding to the analyzed Vlan ID, specifically: and deleting the analyzed Vlan ID from the response data packet, regenerating the cyclic redundancy check code of the response data packet with the Vlan ID deleted, and transmitting the response data packet with the regenerated cyclic redundancy check code through the optical port corresponding to the analyzed Vlan ID.
Similarly, because the Vlan ID is unnecessary information for the opposite end, after deleting the original Vlan ID in the response data packet, the cyclic redundancy check code of the response data packet needs to be regenerated, if the cyclic redundancy check code is not regenerated, when the opposite end receives the response data packet and performs information check by using the check code, a check result of Vlan ID missing/error can be obtained, and if the check code is regenerated, the information checked by the opposite end by using the check code does not include the Vlan ID, only useful information is checked, and the check accuracy is ensured.
The technical scheme adopted by the invention is as follows:
a multi-port communication device, comprising: and the optical port information processing module is used for presetting the Vlan IDs of a plurality of optical ports, and transmitting a data packet to a corresponding application layer according to the Vlan ID corresponding to the optical port when the data packet transmitted by one of the optical ports is acquired.
Further, the optical port information processing module is further configured to, when a response packet transmitted by the application layer is acquired, analyze the Vlan ID in the response packet, and transmit the response packet through an optical port corresponding to the analyzed Vlan ID.
A computer device comprising a memory storing a computer program and a processor implementing the multi-optical port communication method described above when the processor executes the computer program.
A computer-readable storage medium on which a computer program is stored, which, when executed by a processor, implements a data processing method in the above-described multi-optical-port communication method.
Compared with the prior art, the invention has the beneficial effects that:
(1) the method provided by the invention does not relate to the change of MAC addresses, the transmission between the multi-optical-port unit/equipment and the multi-optical-port unit/equipment can be realized by using Vlan ID, any opposite end or next-stage unit/equipment does not need to be configured or modified, and meanwhile, as the MAC address of any unit/equipment is not changed in the whole transmission process of a data packet, the problem of MAC address conflict can not occur when a plurality of units/equipment are cascaded;
(2) after the Vlan ID in the data packet is added/deleted, the cyclic redundancy check code is regenerated for the data packet, so that a receiver of the data packet added with the Vlan ID brings the Vlan ID into one of check information, and the integrity of the check is ensured; the receiver of the data packet with the Vlan ID deleted does not bring the Vlan ID into one of the check information, and the check accuracy is guaranteed.
Drawings
FIG. 1 is a schematic flow chart showing steps S0 to S2 in example 1.
Fig. 2 is a schematic structural diagram of a digital access unit DRAU and a digital remote unit DRU in embodiment 2.
Fig. 3 is a schematic diagram illustrating the FPGA and the ARM in the digital access unit DRAU in embodiment 2 executing step S1.
Fig. 4 is a schematic diagram illustrating the FPGA and the ARM in the digital access unit DRAU in embodiment 2 executing step S2.
Detailed Description
The drawings are only for purposes of illustration and are not to be construed as limiting the invention. For a better understanding of the following embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
Example 1
As shown in fig. 1, the present embodiment provides a multi-optical-port communication method, including the steps of:
s0: presetting Vlan ID of a plurality of optical ports;
a unique Vlan ID is configured for each optical port in advance, so that the Vlan ID serves as an identifier of each optical port and forms a one-to-one mapping relation with the corresponding optical port. In this embodiment, configuring a unique Vlan ID for each optical port means that each optical port uses different virtual local area networks for communication, which means that each optical port uses different virtual local area networks for communication, and thus it is necessary to virtualize a network interface for each optical port after configuring the Vlan ID, and pre-configure a unique IP address for the virtual network interface of each optical port, and the IP address of each optical port corresponds to the unique Vlan ID, so that a one-to-one mapping relationship between the optical port-optical port IP address-Vlan ID is formed. The unique IP address configured for each optical port can be configured/set by itself, and the IP address of each optical port can also be configured through a DHCP (dynamic host configuration) protocol.
When a certain optical port incoming data packet is acquired, the following steps are executed:
s1: transmitting the incoming data packet to a corresponding application layer according to the Vlan ID corresponding to the optical port;
based on the Vlan ID pre-configured for each optical port in step S0, in step S1, when a data packet is transmitted from one optical port, the Vlan ID corresponding to the optical port is determined according to the optical port of the transmitted data and the mapping relationship between the optical port and the Vlan ID, and then in the process of transmitting the transmitted data packet from the optical port to the application layer, the data packet can be distinguished from the data packets transmitted from other optical ports by using the identifier Vlan ID corresponding to the optical port, and since the frequency bands of signals transmitted by different optical ports are different, the application layers of the data packet transmitted by different optical ports, which need information interaction, are also different, and the data packet can be transmitted to the application layer corresponding to the optical port by using the unique Vlan ID for information interaction. The method provided by the embodiment does not involve changing the MAC address, realizes multi-optical-port transmission by configuring Vlan ID for the optical ports to identify different optical ports, and simultaneously does not have the problem of MAC address conflict when a plurality of units/devices are cascaded because the MAC address of any unit/device is not changed in the whole transmission process of a data packet.
Further, the specific implementation procedure of step S1 is as follows: and adding the Vlan ID corresponding to the optical port into an incoming data packet, and transmitting the data packet to a corresponding application layer according to the Vlan ID in the data packet.
In step S1, the specific process of transmitting the data packet to the application layer by the Vlan ID is as follows: when a data packet transmitted by a certain optical port is acquired, firstly, a Vlan ID corresponding to the optical port is determined through a mapping relation between the optical port and the Vlan ID, and the determined Vlan ID is added to the transmitted data packet. Specifically, if the transmission of the data packet is performed based on a general TCP/IP protocol stack, when the data packet is transmitted from the optical port, the data packet is first processed by the physical layer (i.e., adding the Vlan ID), and then the data packet is transmitted to the application layer by the TCP/IP protocol stack, and in the process of transmitting the data packet to the application layer, each layer (i.e., the network interface layer, the Internet layer, and the transmission layer) in the TCP/IP protocol stack except the application layer can quickly and accurately transmit the data packet to the corresponding application layer through the Vlan ID added to the data packet. The application layer acquires the data packet transmitted by the protocol stack by monitoring, and if the IP addresses of the plurality of optical ports are all configured at the same port, the application layer can acquire the data packet transmitted by any one of the plurality of optical ports by monitoring the same port.
Preferably, the specific implementation procedure of step S1 is: and adding the Vlan ID corresponding to the optical port into an incoming data packet, regenerating the cyclic redundancy check code of the data packet added with the Vlan ID, and transmitting the data packet regenerated with the cyclic redundancy check code to a corresponding application layer according to the Vlan ID in the data packet.
In step S1, it is necessary to add Vlan ID to the incoming packet as described above, and after adding Vlan ID to the packet, the cyclic redundancy check code of the packet should be regenerated to ensure that the cyclic redundancy check code generated by the packet includes the added Vlan ID, so that when the application layer receives the packet and verifies its information by using the cyclic redundancy check code, the verified information can include Vlan ID together, thereby ensuring the integrity of the packet verification information by the application layer.
Further, when a response data packet transmitted by the application layer is acquired, the following steps are executed:
s2: and analyzing the Vlan ID in the incoming response data packet, and transmitting the response data packet through an optical port corresponding to the analyzed Vlan ID.
After the data packet transmitted by a certain optical port is transmitted to the corresponding application layer based on step S1, the application layer monitors the acquired data packet and sends out a response data packet responding to the data packet, because the response data packet is a data packet responding to the transmission of a certain optical port, the response data packet includes the IP address of the responded optical port, taking the TCP/IP protocol stack as an example, after the TCP/IP protocol stack receives the response data packet of the application layer, because it is necessary to transmit data to the virtual network interface of a certain optical port, that is, to transmit through the Vlan interface, the protocol stack will automatically add a corresponding Vlan ID in Vlan-related data of the response data packet, specifically, add the Vlan ID according to the mapping relationship between the IP address of the optical port and the Vlan ID, so that the response data packet transmitted through the protocol stack includes the Vlan ID corresponding to the optical port, in step S2, after the Vlan ID in the response data packet is obtained through analysis, the optical port to which the response data packet needs to be transmitted can be determined according to the mapping relation between the optical port and the Vlan ID, and finally the response data packet is transmitted through the optical port.
Further, the specific implementation procedure of step S2 is as follows: and analyzing the Vlan ID in the incoming response packet, deleting the analyzed Vlan ID from the response packet, and transmitting the response packet with the Vlan ID deleted through an optical port corresponding to the analyzed Vlan ID.
In step S2, after the Vlan ID in the response packet is analyzed and acquired, the Vlan ID is deleted from the response packet, and the response packet from which the Vlan ID is deleted is output from the corresponding optical port. Because the Vlan ID is only used for optical port identification and differentiation in the transmission process from the optical port to the application layer, that is, the Vlan ID is no longer needed as an identifier after the response packet is output from the optical port (to the opposite end), before the response packet is output from the optical port, the Vlan ID should be deleted from the response packet after the Vlan ID in the response packet is obtained through analysis, so that the response packet output from the optical port (to the opposite end) only retains useful information needed by the opposite end.
Preferably, the specific implementation procedure of step S2 is: and analyzing the Vlan ID in the incoming response data packet, deleting the analyzed Vlan ID from the response data packet, regenerating the cyclic redundancy check code of the response data packet with the Vlan ID deleted, and transmitting the response data packet with the regenerated cyclic redundancy check code through the optical port corresponding to the analyzed Vlan ID.
As described above, because the Vlan ID is unnecessary information for the opposite end, after deleting the original Vlan ID in the response data packet, the cyclic redundancy check code of the response data packet needs to be regenerated, if the cyclic redundancy check code is not regenerated, when the opposite end performs information check by using the check code that is not regenerated after receiving the response data packet, the result of checking that the Vlan ID is missing/erroneous is obtained, and if the check code is regenerated, when the opposite end checks the information of the data packet by using the check code, the Vlan ID is not included any more, only useful information is checked, and accuracy of the check information is ensured.
Preferably, when the IP address of each optical port is configured by a DHCP (dynamic host configuration) protocol, the IP address configuration of each optical port may be performed based on the principle of the specific and optimized execution procedure of the above steps S1 and S2, as follows:
after step S0 is executed to configure Vlan IDs for each optical port, virtualize a network interface for each optical port, and configure an IP address of each optical port through a DHCP (dynamic host configuration) protocol, where an example of an execution process for the IP address configuration of one of the optical ports is as follows:
when a DHCP request packet with a Vlan ID corresponding to a certain optical port, which is transmitted by the application layer, is acquired, step S3 is executed;
s3: analyzing the Vlan ID in the obtained DHCP request data packet, deleting the analyzed Vlan ID from the DHCP request data packet, regenerating the cyclic redundancy check code of the DHCP request data packet, and transmitting the DHCP request data packet with the regenerated cyclic redundancy check code through an optical port corresponding to the analyzed Vlan ID;
when acquiring a DHCP reply packet of the DHCP request packet from the optical port, performing step S4;
s4: and adding the Vlan ID corresponding to the optical port into the DHCP response data packet, regenerating the cyclic redundancy check code of the DHCP response data packet, and transmitting the DHCP response data packet in which the cyclic redundancy check code is regenerated to a corresponding application layer according to the Vlan ID in the DHCP response data packet so that the application layer can acquire the IP address configured by the optical port.
Repeating the step S3 and the step S4 to allocate each optical port to an IP address through a DHCP protocol, a mapping relationship between the IP address and the optical port-Vlan ID can be established, wherein the principle and effect of operations of deleting the Vlan ID in the step S3, adding the Vlan ID in the step S4, and regenerating the cyclic redundancy check code in both steps are the same as those of the operations in the step S1 and the step S2, and are not repeated here.
The method provided by the present embodiment performs step S0: the method comprises the steps of pre-configuring Vlan IDs of a plurality of optical ports, configuring/setting a unique Vlan ID for each optical port, configuring a unique IP address for each optical port in a preset configuration mode or a DHCP protocol configuration mode, and establishing a mapping relation of the IP address of each optical port-the Vlan ID. When a certain optical port incoming data packet is acquired, step S1 is executed: and adding the Vlan ID corresponding to the optical port into an incoming data packet, regenerating the cyclic redundancy check code of the data packet added with the Vlan ID, and transmitting the data packet regenerated with the cyclic redundancy check code to a corresponding application layer according to the Vlan ID in the data packet. Through the unique Vlan ID of the corresponding optical port allocated in step S0, the Vlan ID is added to the data packet, and then the cyclic redundancy check code is regenerated, and the data packet is transmitted to the corresponding application layer through the protocol stack, in this process, the optical ports of the data packet are identified and distinguished by the Vlan ID, so that the data packet is transmitted to the application layer corresponding to the optical port through the protocol stack for information interaction. When the response packet incoming from the application layer is acquired, step S2 is executed: and analyzing the Vlan ID in the incoming response data packet, deleting the analyzed Vlan ID from the response data packet, regenerating the cyclic redundancy check code of the response data packet with the Vlan ID deleted, and transmitting the response data packet with the regenerated cyclic redundancy check code through the optical port corresponding to the analyzed Vlan ID. And deleting the Vlan ID in the response data packet after analyzing the Vlan ID, regenerating the cyclic redundancy check code of the response data packet, and transmitting the response data packet through a corresponding optical port (to an opposite end), wherein the process also identifies the corresponding optical port through the Vlan ID, wherein the corresponding optical port needs to transmit the response data packet. The method provided by the embodiment realizes the communication transmission of multiple optical interfaces mainly through the one-to-one mapping relationship between Vlan IDs and optical interfaces, and does not need to change the MAC address of any unit/device, i.e. the problem of MAC address collision does not occur even when multiple units/devices are cascaded.
Example 2
The embodiment provides a multi-optical-port communication method which is applied to a digital access unit (DRAU).
As shown in fig. 2, the digital access unit DRAU includes an FPGA and an ARM (serving as a CPU of the digital access unit DRAU) connected to the FPGA through an MII interface. The digital access unit DRAU and the digital remote unit DRU belong to two units in a digital radio remote system, where the digital access unit DRAU is a last-stage unit of the digital remote unit DRU, the two units communicate with each other through an optical fiber connection, both units are provided with a plurality of optical ports (optical fiber interfaces), and as an example, fig. 2 only shows three optical ports of each of the digital access unit DRAU and the digital remote unit DRU.
When the method is applied to the digital access unit DRAU, the ARM of the digital access unit DRAU executes the following steps:
s0: presetting Vlan ID of a plurality of optical ports;
the ARM may automatically and previously configure a unique Vlan ID for each optical port, and may also configure the Vlan ID for each optical port in the ARM by the user himself (that is, the digital access unit DRAU starts to receive and transmit data after the user performs step S0), so that the Vlan ID serves as an identifier for each optical port and forms a one-to-one mapping relationship with the corresponding optical port. In this embodiment, configuring a unique Vlan ID for each optical port means that each optical port uses different virtual local area networks for communication, which means that the IP address used by each optical port is different, so that after configuring the Vlan ID, the ARM actually needs to virtualize a network interface for each optical port, and pre-configure a unique IP address for the virtual network interface of each optical port, and the IP address of each optical port corresponds to the unique Vlan ID, thereby forming a one-to-one mapping relationship between the optical port-optical port IP address-Vlan ID. The configuration of the unique IP address for each optical port may be configured/set by a user, or the configuration of the IP address of each optical port may be performed by an ARM via a DHCP (dynamic host configuration) protocol.
As shown in fig. 3, when the digital access unit DRAU acquires a data packet sent by a digital remote unit DRU transmitted by a certain optical port, the data packet is transmitted to an FPGA in the digital access unit DRAU for processing, and the FPGA and the ARM execute the following steps:
s1: the FPGA adds the Vlan ID corresponding to the optical port into an incoming data packet, and transmits the data packet to the ARM; the ARM transmits the data packet to an application layer corresponding to the DRAU according to the Vlan ID in the data packet;
in step S1, when the digital access unit DRAU acquires a data packet transmitted from a certain optical port, the FPGA first processes the data packet, the FPGA determines a Vlan ID corresponding to the optical port through a mapping relationship between the optical port and the Vlan ID, adds the determined Vlan ID to the transmitted data packet, transmits the data packet to the ARM through the MII interface, and after receiving the data packet, the ARM transmits the data packet to the application layer by layer through a communication protocol stack employed by the digital access unit DRAU, and the application layer acquires the data packet transmitted by the protocol stack through monitoring, and if IP addresses of a plurality of optical ports are all configured at the same port, the application layer can acquire the data packet transmitted from any one of the plurality of optical ports through monitoring the same port.
In the process, other layers except the application layer in communication transmission can distinguish data packets transmitted by other optical ports through Vlan IDs added by the FPGA in the data packets, so that the data packets are quickly and accurately transmitted to the corresponding application layer. Specifically, if the transmission of the data packet is performed based on a general TCP/IP protocol stack, the data packet is processed by the FPGA, that is, after the corresponding Vlan ID is added, and then the data packet is transmitted to the application layer through the TCP/IP protocol stack, during the transmission of the data packet to the application layer, each layer (i.e., the network interface layer, the Internet layer, and the transmission layer) in the TCP/IP protocol stack except the application layer can quickly and accurately transmit the data packet to the corresponding application layer through the Vlan ID added in the data packet.
Preferably, the specific implementation procedure of step S1 is: the FPGA adds the Vlan ID corresponding to the optical port into an incoming data packet, regenerates the cyclic redundancy check code of the data packet added with the Vlan ID, and transmits the data packet to the ARM; and the ARM transmits the data packet which has regenerated the cyclic redundancy check code to a corresponding application layer according to the Vlan ID in the data packet.
In step S1, as described above, the FPGA needs to add the Vlan ID to the incoming data packet, and after the Vlan ID is added to the data packet, the cyclic redundancy check code of the data packet should be generated again, so as to ensure that the cyclic redundancy check code generated by the data packet includes the added Vlan ID, and then the ARM transmits the data packet to the application layer through the protocol stack, and the application layer can include the Vlan ID in the check information when checking the information thereof by using the check code, thereby ensuring the integrity of the data packet check information by the application layer.
Further, when the ARM acquires a response data packet transmitted by the application layer, the following steps are executed:
s2: the ARM transmits the response data packet to the FPGA; and the FPGA analyzes the Vlan ID in the incoming response data packet, and transmits the response data packet to the DRU through an optical port corresponding to the analyzed Vlan ID.
Based on the fact that after the ARM transmits a data packet transmitted by a certain optical port to a corresponding application layer through the protocol stack in step S1, the application layer will send a response data packet responding to the data packet, because the response data packet is a data packet responding to the transmission of a certain optical port, the response data packet includes an IP address of the responded optical port, taking the TCP/IP protocol stack as an example, after the TCP/IP protocol stack receives the response data packet of the application layer, because it needs to transmit data to a virtual network interface of a certain optical port, that is, to transmit through the Vlan interface, the protocol stack will automatically add a corresponding Vlan ID in Vlan-related data of the response data packet, specifically, add the Vlan ID according to a mapping relationship between the IP address of the optical port and the Vlan ID, so that the response data packet transmitted through the protocol stack includes the lan ID corresponding to the optical port, then in step S2, after the FPGA receives the response data packet through the MII interface, and analyzing the Vlan ID in the acquired response data packet, determining an optical port through which the response data packet needs to be transmitted according to a mapping relation between the optical port and the Vlan ID, and finally transmitting the response data packet to the DRU through the optical port.
Further, as shown in fig. 4, the specific execution process of step S2 is as follows: the ARM transmits the response data packet to the FPGA; the FPGA analyzes the Vlan ID in the incoming response data packet, deletes the analyzed Vlan ID from the response data packet, and transmits the response data packet with the Vlan ID deleted to the DRU through the optical port corresponding to the analyzed Vlan ID.
In step S2, after acquiring the response packet, the FPGA analyzes and acquires the Vlan ID in the response packet, deletes the Vlan ID from the response packet, and outputs the response packet with the Vlan ID deleted to the digital remote unit DRU from the corresponding optical port. Since the Vlan ID is only used for optical port identification and differentiation in the transmission process from the optical port to the application layer, that is, the Vlan ID is no longer needed as an identifier after the response packet is output from the optical port (to the digital remote unit DRU), before the FPGA outputs the response packet through the optical port, the Vlan ID should be deleted from the response packet after the Vlan ID in the response packet is obtained by parsing, so that the response packet output from the optical port (to the digital remote unit DRU) is ensured to only retain useful information needed by the digital remote unit DRU.
Preferably, the specific implementation procedure of step S2 is: the ARM transmits the response data packet to the FPGA; the FPGA analyzes the Vlan ID in the incoming response data packet, deletes the analyzed Vlan ID from the response data packet, regenerates the cyclic redundancy check code of the response data packet with the Vlan ID deleted, and transmits the response data packet with the cyclic redundancy check code regenerated to the DRU through the optical port corresponding to the analyzed Vlan ID.
As described above, because the Vlan ID is unnecessary information for the DRU, the FPGA needs to regenerate the cyclic redundancy check code of the response data packet after deleting the original Vlan ID in the response data packet, if the cyclic redundancy check code is not regenerated, the DRU obtains the check result of Vlan ID loss/error when performing information check using the check code that is not regenerated after receiving the response data packet, and if the check code is regenerated, the DRU checks the information of the data packet using the check code without including the Vlan ID, and only checks useful information, thereby ensuring the accuracy of the check information.
Preferably, when the IP address of each optical port of the digital access unit DRAU is configured between the two units through a DHCP (dynamic host configuration) protocol, the IP address configuration of each optical port may be performed based on the principle of the specific and optimized execution procedure of the above steps S1 and S2, as follows:
after the ARM of the digital access unit DRAU performs step S0 to configure Vlan IDs for each optical port, virtualize a network interface for each optical port, and configure an IP address of each optical port through a DHCP (dynamic host configuration) protocol, where an example of an execution process for the IP address configuration of one of the optical ports is described below:
an application layer of the digital access unit DRAU sends a DHCP request data packet with Vlan ID corresponding to a certain optical port, and an IP address of the optical port is configured through a DHCP protocol, so that after the ARM acquires the DHCP request data packet through a protocol stack, the ARM and the FPGA in the digital access unit DRAU execute step S3;
s3: the ARM transmits the DHCP request data packet to the FPGA; the FPGA analyzes the Vlan ID in the acquired DHCP request data packet, deletes the analyzed Vlan ID from the DHCP request data packet, regenerates the cyclic redundancy check code of the DHCP request data packet, and transmits the DHCP request data packet which regenerates the cyclic redundancy check code to the digital remote unit DRU through an optical port corresponding to the analyzed Vlan ID;
when the digital access unit DRAU acquires the DHCP reply data packet sent from the digital remote unit DRU from the optical port, the FPGA and the ARM in the digital access unit DRAU execute step S4;
s4: the FPGA adds the Vlan ID corresponding to the optical port into the DHCP response data packet, regenerates the cyclic redundancy check code of the DHCP response data packet, and transmits the data packet to the ARM; and the ARM transmits the DHCP response data packet which regenerates the cyclic redundancy check code to a corresponding application layer according to the Vlan ID in the DHCP response data packet, so that the application layer acquires the IP address configured by the optical port through monitoring.
The digital access unit DRAU transmits DHCP request data to the digital remote unit DRU to enable the digital remote unit DRU to configure an IP address for each optical port, and then the FPGA and the ARM in the digital access unit DRU repeatedly execute step S3 and step S4 to enable each optical port to be allocated with an IP address, and then the FPGA, the ARM, the protocol stack, and the application layer can all establish a mapping relationship between the IP address and the optical port and Vlan ID, where the principle and effect of operations of deleting the Vlan ID by the FPGA in step S3, adding the Vlan ID in step S4, and regenerating the cyclic redundancy check code in both steps are the same as those of operations corresponding to the FPGA in step S1 and step S2, and are not described herein again.
The method provided by this embodiment is applied to the digital access unit DRAU, and first, the step S0 is executed by an ARM or a user of the digital access unit DRAU: the method comprises the steps of pre-configuring Vlan IDs of a plurality of optical ports, configuring/setting a unique Vlan ID for each optical port, configuring a unique IP address for each optical port in a preset configuration mode or a DHCP protocol configuration mode, and establishing a mapping relation of the IP address of each optical port-the Vlan ID. When the digital access unit DRAU acquires a data packet transmitted by a digital remote unit DRU transmitted by a certain optical port, the ARM and the FPGA of the digital access unit DRAU execute step S1: the FPGA adds the Vlan ID corresponding to the optical port into an incoming data packet, regenerates the cyclic redundancy check code of the data packet added with the Vlan ID, and transmits the data packet to the ARM through the MII interface; and the ARM transmits the data packet which has regenerated the cyclic redundancy check code to a corresponding application layer according to the Vlan ID in the data packet. The Vlan ID is added to the data packet by the FPGA through the unique Vlan ID of the corresponding optical port allocated in step S0, and then the cyclic redundancy check code is generated again, and the data packet processed by the FPGA is transmitted to the corresponding application layer through the protocol stack by the ARM. When the ARM acquires the response data packet transmitted by the application layer through the protocol stack, the ARM and the FPGA execute step S2: the ARM transmits the response data packet to the FPGA through the MII interface, the FPGA analyzes the Vlan ID in the transmitted response data packet, the analyzed Vlan ID is deleted from the response data packet, the cyclic redundancy check code of the response data packet with the Vlan ID deleted is regenerated, and the response data packet with the cyclic redundancy check code regenerated is transmitted to the DRU through the optical port corresponding to the analyzed Vlan ID. After receiving the response data packet through the MII interface, the FPGA analyzes and obtains the Vlan ID in the response data packet and deletes the Vlan ID, the cyclic redundancy check code of the response data packet is regenerated, the response data packet is transmitted to the DRU through the corresponding optical port, and the corresponding optical port needing to transmit the response data packet is identified through the Vlan ID in the process.
When the multi-optical-port communication method provided by this embodiment is applied, the digital access unit DRAU configures Vlan ID for multiple optical ports of this unit to establish a one-to-one mapping relationship between the optical ports and Vlan ID, thereby implementing communication transmission with a digital remote unit DRU that is also a multi-optical-port unit, and there is no configuration and change to the digital remote unit DRU involved in this process, that is, the digital access unit DRAU can immediately perform multi-optical-port transmission with any connected digital remote unit DRU after applying the method of this embodiment, and secondly, there is no MAC address change to any unit/device in the execution process of this method, and there is no MAC address conflict problem when the digital access unit DRAU cascades with other units/devices.
Example 3
The present embodiment provides a multi-optical-port communication apparatus, including an optical-port information processing module, configured to preset Vlan IDs of a plurality of optical ports (optical fiber interfaces), where the plurality of optical ports belong to any device/unit that performs data transmission through optical fibers, and may also be optical ports provided in the multi-optical-port communication apparatus itself in this embodiment, that means that the multi-optical-port communication apparatus can be used for processing multi-optical-port communication data transmission of other devices/units, and can also be used for multi-optical-port communication data transmission of itself.
The optical port information processing module is further configured to, when a data packet transmitted by one of the optical ports is acquired, transmit the transmitted data packet to a corresponding application layer according to the Vlan ID corresponding to the optical port.
Preferably, the optical port information processing module is specifically configured to, when a data packet incoming to one of the optical ports is acquired, add a Vlan ID corresponding to the optical port to the incoming data packet, and transmit the data packet to which the Vlan ID is added to a corresponding application layer according to the Vlan ID in the data packet.
Preferably, the optical port information processing module is specifically configured to, when a data packet incoming to one of the optical ports is acquired, add a Vlan ID corresponding to the optical port to the incoming data packet, regenerate a cyclic redundancy check code of the data packet to which the Vlan ID is added, and transmit the data packet, in which the cyclic redundancy check code is regenerated, to a corresponding application layer according to the Vlan ID in the data packet.
Preferably, the optical interface information processing module is further configured to, when acquiring the response packet incoming from the application layer, parse the Vlan ID in the response packet, and transmit the response packet through the optical interface corresponding to the parsed Vlan ID.
Based on the above preferred scheme, the optical port information processing module is specifically configured to delete the analyzed Vlan ID from the response packet when the response packet transmitted by the application layer is acquired, and transmit the response packet from which the Vlan ID is deleted through the optical port corresponding to the analyzed Vlan ID.
Preferably, the optical interface information processing module is specifically configured to, when acquiring the response packet transmitted by the application layer, delete the analyzed Vlan ID from the response packet, regenerate the cyclic redundancy check code of the response packet from which the Vlan ID is deleted, and transmit the response packet from which the cyclic redundancy check code is regenerated through the optical interface corresponding to the analyzed Vlan ID.
The multi-optical-port communication apparatus provided in this embodiment configures Vlan IDs for multiple optical ports of the apparatus or the apparatus under control processing to establish a one-to-one mapping relationship between the multiple optical ports and the Vlan IDs, thereby implementing multi-optical-port transmission of the apparatus or the apparatus under control processing, and in this process, configuration and change of other apparatuses/units except the apparatus or the apparatus under control processing are not involved.
Example 4
The multi-optical-port communication method provided in embodiment 1 can also be applied to the computer device provided in embodiment 4, where the computer device provided in embodiment 4 includes a memory and a processor, the memory stores a computer program, and the processor executes the computer program to implement the multi-optical-port communication method provided in embodiment 1.
Example 5
The multi-optical-port communication method provided in embodiment 1 can also be applied to the computer-readable storage medium provided in embodiment 5, where the computer-readable storage medium provided in embodiment 5 has a computer program stored thereon, and the computer program, when executed by a processor, can implement the multi-optical-port communication method provided in embodiment 1.
It should be understood that the above-mentioned embodiments of the present invention are only examples for clearly illustrating the technical solutions of the present invention, and are not intended to limit the specific embodiments of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention claims should be included in the protection scope of the present invention claims.

Claims (9)

1. A method of multi-port communication, the method comprising:
configuring a unique Vlan ID for each optical port in advance;
when a data packet transmitted by one optical port is acquired, the corresponding Vlan ID is determined according to the optical port of the transmitted data packet, the determined Vlan ID is added to the transmitted data packet, and the data packet with the Vlan ID added is transmitted to the corresponding application layer by layer through a protocol stack.
2. The multi-optical port communication method of claim 1, further comprising:
when a response data packet transmitted by an application layer is acquired, analyzing the Vlan ID in the response data packet, and transmitting the response data packet through an optical port corresponding to the analyzed Vlan ID.
3. The multi-port communication method according to claim 2, wherein transmitting the response packet via the port corresponding to the analyzed Vlan ID includes:
and deleting the analyzed Vlan ID from the response packet, and transmitting the response packet with the Vlan ID deleted through the optical port corresponding to the analyzed Vlan ID.
4. The multi-optical-port communication method according to any one of claims 1 to 3, wherein adding a Vlan ID corresponding to the optical port to the packet, and transmitting the packet to which the Vlan ID has been added to the corresponding application layer according to the Vlan ID in the packet, comprises:
and adding the Vlan ID corresponding to the optical port into the data packet, regenerating the cyclic redundancy check code of the data packet added with the Vlan ID, and transmitting the data packet regenerated with the cyclic redundancy check code to a corresponding application layer according to the Vlan ID in the data packet.
5. The multi-optical-port communication method according to claim 3, wherein the step of deleting the analyzed Vlan ID from the response packet and transmitting the response packet from which the Vlan ID is deleted through the optical port corresponding to the analyzed Vlan ID comprises the steps of:
and deleting the analyzed Vlan ID from the response data packet, regenerating the cyclic redundancy check code of the response data packet with the Vlan ID deleted, and transmitting the response data packet with the regenerated cyclic redundancy check code through the optical port corresponding to the analyzed Vlan ID.
6. A multi-port communication device, comprising:
and the optical port information processing module is used for configuring a unique Vlan ID for each optical port in advance, determining a corresponding Vlan ID according to the optical port of an incoming data packet when the data packet incoming from one of the optical ports is acquired, adding the determined Vlan ID to the incoming data packet, and transmitting the data packet added with the Vlan ID to a corresponding application layer by layer through a protocol stack.
7. The multi-optical-port communication device according to claim 6, wherein the optical-port information processing module is further configured to, when acquiring a response packet incoming from an application layer, parse Vlan ID in the response packet, and transmit the response packet through an optical port corresponding to the parsed Vlan ID.
8. A computer device comprising a memory and a processor, the memory storing a computer program, wherein the processor implements the multi-optical-port communication method of any one of claims 1 to 6 when executing the computer program.
9. A computer-readable storage medium, on which a computer program is stored, wherein the computer program, when executed by a processor, implements the multi-optical-port communication method according to any one of claims 1 to 5.
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