CN107465742B - Distribution equipment and method for realizing asymmetric service by UDP tunnel technology - Google Patents
Distribution equipment and method for realizing asymmetric service by UDP tunnel technology Download PDFInfo
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- CN107465742B CN107465742B CN201710653636.XA CN201710653636A CN107465742B CN 107465742 B CN107465742 B CN 107465742B CN 201710653636 A CN201710653636 A CN 201710653636A CN 107465742 B CN107465742 B CN 107465742B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
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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
- H04L12/4633—Interconnection of networks using encapsulation techniques, e.g. tunneling
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- 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
- H04L45/74—Address processing for routing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/32—Flow control; Congestion control by discarding or delaying data units, e.g. packets or frames
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/10—Packet switching elements characterised by the switching fabric construction
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/30—Peripheral units, e.g. input or output ports
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/50—Reducing energy consumption in communication networks in wire-line communication networks, e.g. low power modes or reduced link rate
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Abstract
The invention discloses a diversion device for realizing asymmetric service by utilizing UDP tunnel technology, comprising: a comprehensive gateway; the uplink data input port of the optical line terminal is connected with the uplink data transmission port of the integrated gateway; the first switching port of the switching network unit is connected with the uplink data output port of the optical line terminal; the server cluster is connected with a third switching port of the switching network unit; and the shunting interaction port of the shunting equipment is connected with the second switching port of the switching network unit, and the shunting data output port of the shunting equipment is connected with the downlink data receiving port of the comprehensive gateway. A service splitting method is also disclosed. The invention is beneficial to providing bandwidth utilization rate and reducing cost, and has simple implementation mode because the requirement of uplink on convergence equipment is higher and the convergence point does not exist in downlink, so the uplink bandwidth cost is higher than the downlink bandwidth cost.
Description
Technical Field
The invention relates to the technical field of service distribution equipment, belongs to the field of communication, and particularly relates to distribution equipment for realizing asymmetric service by utilizing UDP tunnel technology and a service distribution method thereof.
Background
The current services running on the network can be classified into 2 classes according to the characteristics of uplink/downlink traffic. One class is symmetric services, which include voice communications, video communications, etc.; another type of asymmetric service includes live video, video on demand (OTT/VOD), video surveillance, VR, games, browsing web pages, email, file downloads, etc. Common features of these asymmetric services are: the downlink (from the network to the terminal) requires a high bandwidth (1 Mbps to 100 Mbps), and the uplink (from the network to the terminal) requires a relatively low bandwidth (10 Kbps to 100 Kbps). Video and game-based services are becoming main revenue sources for many operators, and besides the above requirements on bandwidth, qoS (error code, packet loss, delay jitter, etc.) of a network also has a great influence on service quality and user experience.
At present, the transmission scheme widely used by broadcast television and telecommunication networks is to provide fixed uplink and downlink 1.25Gbps by using an EPON, the uplink rate of the GPON is 1.25G, the downlink rate is 2.5G, and the uplink and downlink rate ratio of the asymmetric service up to hundreds of times cannot be met. At present, some operators widely use OTT systems adopted by video applications, whether live broadcast or on demand, and the types of three-layer/four-layer/application layer data datagrams are unicast/TCP/HTTP (HLS) respectively, so that asymmetric services cannot be well realized.
Disclosure of Invention
One of the technical problems to be solved by the invention is as follows: aiming at the defects of the prior art, the invention provides the shunting equipment which can not only provide the bandwidth utilization rate, but also effectively reduce the equipment cost and realize the asymmetric service by utilizing the UDP tunnel technology.
The second technical problem to be solved by the invention is that: the service splitting method of the splitting equipment for realizing the asymmetric service by utilizing the UDP tunnel technology is provided.
As a first aspect of the present invention, a offloading device for implementing asymmetric traffic using UDP tunneling, includes:
the comprehensive gateway is used for sending uplink data messages and receiving downlink data messages and is provided with an uplink data sending port and a downlink data receiving port;
the optical line terminal is provided with an uplink data input port and an uplink data output port, and the uplink data input port of the optical line terminal is connected with the uplink data transmission port of the integrated gateway through a first optical splitter;
a switching network unit, which is provided with a first switching port, a second switching port and a third switching port, wherein the first switching port of the switching network unit is connected with the uplink data output port of the optical line terminal;
a server cluster formed by connecting a plurality of servers, wherein the server cluster is connected with a third switching port of the switching network unit;
the distribution equipment is provided with a distribution interaction port and a distribution data output port, the distribution interaction port of the distribution equipment is connected with the second switching port of the switching network unit, and the distribution data output port of the distribution equipment sequentially passes through an optical amplifier and a second optical splitter and is connected with the downlink data receiving port of the comprehensive gateway.
As a second aspect of the present invention, a service splitting method of the above-mentioned splitting device for implementing asymmetric services by using UDP tunneling, includes the following steps:
step S1, the integrated gateway 100 sends an uplink data message containing UDP tunnel information, and the uplink data message reaches the designated splitting equipment through the first optical splitter, the optical line terminal and the switching network unit;
step S2, the shunt equipment extracts load data from the UDP tunnel and carries out related processing, and carries out data interaction with the server cluster through the switching network;
and S3, adding the UDP tunnel message header into the data fed back by the server cluster by the shunting equipment, and transmitting the data to the comprehensive gateway through the optical amplifier and the second optical splitter.
Due to the adoption of the technical scheme, the invention has the following beneficial effects compared with the prior art:
1) The method is favorable for providing bandwidth utilization rate and reducing cost, and because the requirement of uplink on convergence equipment is higher and no convergence point exists in downlink, the method is simple, and therefore, the uplink bandwidth cost is higher than the downlink bandwidth cost. In actual application, the downlink flow demand is higher than that of the uplink flow demand, and the split device for realizing the asymmetric service by utilizing the UDP tunnel technology has application value;
2) The asymmetric service flow is transmitted on a special tera-channel, does not pass through an internal IP network of an operator, can greatly improve QoS (error code, packet loss, time delay jitter and the like), and can slow down or eliminate the current common video clamping or mosaic phenomenon;
3) The code rate of a single asymmetric service flow is not limited, and high-quality programs such as 4K and the like can be well supported;
4) The extension of various future services of operators is facilitated;
5) The signaling and the service are separated, common network attack does not work, and the security of the network is greatly improved.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic diagram of a flow chart of a service message port processing procedure of the offloading device of the present invention.
Detailed Description
The invention is further described with reference to the following detailed drawings in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the implementation of the invention easy to understand.
Referring to fig. 1, a offloading device for implementing an asymmetric service using UDP tunneling is shown, including an integrated gateway 100, an optical line terminal OLT200, a switching network unit 300, a server cluster 400, and a offloading device 500.
The integrated gateway 100 is configured to send uplink data packets and receive downlink data packets, and the integrated gateway 100 has an uplink data sending port 110 and a downlink data receiving port 120. Optical line terminal OLT200 has an upstream data input port 210 and an upstream data output port 220, and upstream data input port 210 of optical line terminal OLT200 is connected to upstream data transmission port 110 of integrated gateway 100 via an optical splitter 600. Switching network unit 300 has switching ports 310, 320, 330, and switching port 310 of switching network unit 300 is connected to upstream data output port 220 of optical line terminal OLT 200. The server cluster 400 is formed by interconnecting a plurality of servers, and the server cluster 400 is connected to the switch port 330 of the switch network unit 300. The splitter 500 has a splitter interaction port 510 and a splitter data output port 520, where the splitter interaction port 510 of the splitter 500 is connected to the switch port 320 of the switch network unit 300, and the splitter data output port 520 sequentially passes through an optical amplifier 700 and an optical splitter 800 to be connected to the downstream data receiving port 120 of the integrated gateway 100.
The invention discloses a service distribution method of distribution equipment for realizing asymmetric service by utilizing UDP tunnel technology, which comprises the following steps:
step S1, the integrated gateway 100 sends an uplink data packet containing UDP tunnel information, where the uplink data packet reaches the designated splitting device 500 through the optical splitter 600, the optical line terminal 200 and the switching network unit 300;
step S2, the offloading device 500 extracts the load data from the UDP tunnel and performs related processing, and performs data interaction with the server cluster 400 through the switching network unit 300;
in step S3, the splitting device 500 adds the UDP tunnel header to the data fed back by the server cluster 400, and transmits the data to the integrated gateway 100 through the optical amplifier 700 and the optical splitter 800.
Referring to fig. 2, the steps of a specific embodiment of an uplink asymmetric traffic handling procedure of the offloading device of the present invention are as follows:
1. the message sent from the set top box encapsulates a layer of UDP packet header by the original message content, and the destination IP and the destination MAC in the UDP packet header are the IP and the MAC set by the shunting equipment;
2. the shunting equipment receives the uplink service message requirement:
2.1, receiving a source MAC address and a source IP address in a message header, wherein the source MAC address and the source IP address are consistent with a shunting equipment setting value (except broadcasting and multicasting);
2.2 the Ethernet type in the received message header must be IP;
2.3, stripping the message head, and then obtaining the complete Ethernet message.
3. And (3) forwarding the uplink message of the shunt equipment:
3.1, the shunt equipment receives the message and judges the accuracy of the message. Firstly judging whether the information is valid information, otherwise filtering invalid information (including receiving error, vlan_id error, multicast, broadcast and non-IP message);
3.2, stripping the message head, and judging the accuracy of the payload again;
3.3, recording source MAC information in the payload, and distributing TCP ports;
3.4, replacing a source MAC address, a source IP address, a source port field, a destination MAC and a destination IP field in the payload, wherein the destination IP field is reserved for solving the problem of multiple IPs of an asymmetric service group;
3.5 sending the processed payload message through a specified interface (preferably 10G interface) of the splitting device.
Referring to fig. 2, the steps of a specific embodiment of the downstream asymmetric traffic processing flow of the splitting device of the present invention are as follows:
1. the distribution equipment receives the downlink service message requirement:
1.1, receiving a source MAC address and a source IP address in a message header, wherein the source MAC address and the source IP address are consistent with a shunting device setting value (except broadcasting and multicasting);
1.2 because the UDP header needs to be added later, 58 bytes will be occupied, and in order to avoid the message from being too long, the message length needs to be smaller than 1460 bytes.
2. And (3) forwarding a downlink message of the shunt equipment:
2.1, the distribution equipment appoints an interface to receive the message, and judges the accuracy of the message. Firstly judging whether the information is valid information, otherwise filtering invalid information (including receiving error, vlan_id error, multicast, broadcast and non-IP message);
2.2, according to the destination port of the message, looking up a table to confirm that the port is contained in a port allocation table, and recording corresponding information in the table;
2.3, replacing the designated content of the message, including the source MAC address, the destination MAC address, the source IP address, the destination IP address and the source port by corresponding fields in a port allocation table;
2.4, taking the whole message as a payload, adding a UDP message header, automatically designating a source address (MAC, IP, PORT) of the message header by software, wherein a destination address is a multicast address (including a destination PORT), and configuring and designating the multicast address through a software interface;
2.5, the multicast address in the UDP message header is added in the downlink and is obtained through the interactive information of the asymmetric service terminal;
and 2.6, transmitting the datagram added with the UDP message header through a broadcasting transmitting port of the shunting equipment.
The foregoing has shown and described the basic principles and main features of the present invention and the advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (2)
1. A streaming device for implementing asymmetric traffic using UDP tunneling, comprising:
the comprehensive gateway is used for sending uplink data messages and receiving downlink data messages and is provided with an uplink data sending port and a downlink data receiving port;
the optical line terminal is provided with an uplink data input port and an uplink data output port, and the uplink data input port of the optical line terminal is connected with the uplink data transmission port of the integrated gateway through a first optical splitter;
a switching network unit, which is provided with a first switching port, a second switching port and a third switching port, wherein the first switching port of the switching network unit is connected with the uplink data output port of the optical line terminal;
a server cluster formed by connecting a plurality of servers, wherein the server cluster is connected with a third switching port of the switching network unit;
the distribution equipment is provided with a distribution interaction port and a distribution data output port, the distribution interaction port of the distribution equipment is connected with the second switching port of the switching network unit, and the distribution data output port of the distribution equipment sequentially passes through an optical amplifier and a second optical splitter and is connected with the downlink data receiving port of the comprehensive gateway.
2. The traffic splitting method of a splitting device for implementing asymmetric traffic using UDP tunneling according to claim 1, comprising the steps of:
step S1, the integrated gateway 100 sends an uplink data message containing UDP tunnel information, and the uplink data message reaches the designated splitting equipment through the first optical splitter, the optical line terminal and the switching network unit;
step S2, the shunt equipment extracts load data from the UDP tunnel and carries out related processing, and carries out data interaction with the server cluster through the switching network;
and S3, adding the UDP tunnel message header into the data fed back by the server cluster by the shunting equipment, and transmitting the data to the comprehensive gateway through the optical amplifier and the second optical splitter.
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| CN201710653636.XA CN107465742B (en) | 2017-08-02 | 2017-08-02 | Distribution equipment and method for realizing asymmetric service by UDP tunnel technology |
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| CN201710653636.XA CN107465742B (en) | 2017-08-02 | 2017-08-02 | Distribution equipment and method for realizing asymmetric service by UDP tunnel technology |
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| CN107465742B true CN107465742B (en) | 2023-06-23 |
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| CN112738661B (en) * | 2020-12-15 | 2022-05-31 | 广西广播电视信息网络股份有限公司 | Method for realizing bidirectional downlink acceleration on broadcast channel of I-PON (input-output passive optical network) |
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| CN207010726U (en) * | 2017-08-02 | 2018-02-13 | 上海欣诺通信技术有限公司 | A kind of shunting device that non-symmetrical service is realized using UDP tunneling techniques |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2010219978A (en) * | 2009-03-18 | 2010-09-30 | Hitachi Ltd | Optical transmission line terminal, passive optical network system, and bandwidth assignment method |
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|---|---|---|---|---|
| CN102025593A (en) * | 2009-09-21 | 2011-04-20 | 中国移动通信集团公司 | Distributed user access system and method |
| CN102075566A (en) * | 2010-12-24 | 2011-05-25 | 华为技术有限公司 | Business shunting processing method, communication equipment and network system |
| CN102648590A (en) * | 2011-05-27 | 2012-08-22 | 华为技术有限公司 | Method, system and device for communication in the optical network system |
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Inventor after: Qin Xingjian Inventor after: Li Li Inventor after: Wan Renyong Inventor after: Xiang Junyao Inventor after: Xie Hu Inventor after: Li Lin Inventor after: Wu Zhiyuan Inventor after: Chen Yan Inventor before: Qin Xingjian Inventor before: Li Li Inventor before: Wan Renyong Inventor before: Xiang Junyao Inventor before: Xie Hu Inventor before: Li Lin Inventor before: Wu Zhiyuan Inventor before: Chen Yan |
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