WO2020135871A1

WO2020135871A1 - Optical line terminal-content delivery network implementation method and apparatus, and medium and network system

Info

Publication number: WO2020135871A1
Application number: PCT/CN2019/129931
Authority: WO
Inventors: 王金东
Original assignee: 中兴通讯股份有限公司
Priority date: 2018-12-29
Filing date: 2019-12-30
Publication date: 2020-07-02
Also published as: CN111385338A; CN111385338B

Abstract

Disclosed are an optical line terminal-content delivery network implementation method and apparatus, and a computer-readable storage medium and a network system. The method comprises: an optical line terminal-content delivery network node receiving a service request using an Internet protocol/a point-to-point protocol/a point-to-point protocol over Ethernet, wherein a target media access control address in the service request is not a media access control address of the optical line terminal-content delivery network node; and the optical line terminal-content delivery network node sending a service response using the Internet protocol/the point-to-point protocol/the point-to-point protocol over Ethernet, wherein a source media access control address in the service response is not a media access control address of the optical line terminal-content delivery network node.

Description

Optical line terminal-content distribution network implementation method and device, medium, and network system

This application requires the priority of the Chinese patent application filed on December 29, 2018, with the Chinese Patent Office, application number 201811644773.8, the entire content of the application is incorporated by reference in this application.

Technical field

Embodiments of the present disclosure relate to, but are not limited to, an optical line terminal (Optical Line Terminal, OLT)-content delivery network (Content Delivery Network, CDN) implementation method and device, computer-readable storage medium, and network system.

Background technique

CDN is a superimposed network on the Internet Protocol (IP) transmission network of telecom operators. By distributing content in a location close to the user, when the user visits, the service is provided to the user nearby to improve the user experience and reduce Backbone network transmission bandwidth consumption.

In related technologies, the Internet CDN deploys nodes in the telecom operator's center, regional data center (Data) Center, and is located at the backbone network and metropolitan area network level. The telecom operator's CDN only sinks the node to broadband remote No matter which of the above cases, the deployment location of the CDN node in the network is relatively high (far away from the end user) in the DC computer room at the side of the access server (Broadband Remote Access Server, BRAS), the response delay requirements are very high. Or cloud virtual reality (VirtualReality, VR) and other video services with very large bandwidth requirements, the CDN deployment location in the related technology cannot meet the service delay requirements, and the bandwidth pressure on the metropolitan area network is also very large.

The industry considers sinking CDN nodes to the access network. For Ethernet-based Internet Protocol (Internet Protocol over Internet, IPoE) end users, one or two telecommunications equipment providers in the industry have proposed an OLT-CDN solution to sink the CDN to the OLT side.

However, in addition to IPoE end users, telecom operators' existing networks also have many point-to-point protocols based on Ethernet (Point to To Point Protocol over Ethernet, PPPoE) end users. For PPPoE end users, because the PPPoE link is terminated on the BRAS, the proposed OLT-CDN IPoE solution cannot provide services for such users.

Summary of the invention

At least one embodiment of the present disclosure provides an OLT-CDN implementation method and device, a computer-readable storage medium, and a network system to implement support for PPPoE end users.

At least one embodiment of the present disclosure provides an optical line terminal-content distribution network implementation method, including:

The optical line terminal-content distribution network node receives a service request using the Internet protocol/point-to-point protocol/Ethernet-based point-to-point protocol, and the target media access control address in the service request is not the optical line terminal-content distribution network node Media access control address;

The optical line terminal-content distribution network node sends a service response using Internet protocol/point-to-point protocol/Ethernet-based point-to-point protocol, and the source media access control address in the service response is not the optical line terminal-content distribution The network access control address of the network node.

When the optical line terminal receives a packet whose target Internet protocol address is the Internet protocol address of the optical line terminal-content distribution network node, according to the diversion configuration on the optical line terminal, the packet is sent to all The optical line terminal-content distribution network node; wherein, the message includes a service request.

At least one embodiment of the present disclosure provides an optical line terminal-content distribution network implementation device, including a memory and a processor, the memory stores a program, and when the program is read and executed by the processor, any implementation is implemented Example method.

At least one embodiment of the present disclosure provides a computer-readable storage medium that stores one or more programs, and the one or more programs may be executed by one or more processors to implement any task. The method described in an embodiment.

At least one embodiment of the present disclosure provides a network system, including: an optical line terminal and an optical line terminal-content distribution network node, wherein:

The optical line terminal is configured to, according to the diversion configuration on the optical line terminal, upon receiving a packet whose target Internet protocol address is the Internet protocol address of the optical line terminal-content distribution network node The message is sent to the optical line terminal-content distribution network node; wherein, the message includes a service request;

The optical line terminal-content distribution network node is configured to receive a service request using Internet protocol/point-to-point protocol/Ethernet-based point-to-point protocol, and a target Media Access Control (MAC) address in the service request A media access control address other than the optical line terminal-content distribution network node; and, sending a service response using Internet protocol/point-to-point protocol/Ethernet-based point-to-point protocol, the source media access control address of the service response It is the media access control address of the optical line terminal-content distribution network that is not the optical line terminal-content distribution network node.

BRIEF DESCRIPTION

The drawings are used to provide a further understanding of the technical solutions of the present disclosure, and form a part of the specification. They are used to explain the technical solutions of the present disclosure together with the embodiments of the present application, and do not constitute limitations on the technical solutions of the present disclosure.

Figure 1 is a schematic diagram of the system architecture of the OLT-CDN supporting IPoE terminals;

2 is a schematic diagram of a system architecture in which OLT-CDN cannot support PPPoE terminals in the related art;

3 is a schematic diagram of a network system architecture provided by an embodiment of the present disclosure;

4 is a schematic diagram of an OLT-CDN implementation method (OLT-CDN node side) provided by an embodiment of the present disclosure;

5 is a schematic diagram of another OLT-CDN implementation method provided by an embodiment of the present disclosure (on the OLT side);

6 is a schematic diagram of an OLT-CDN implementation method provided by an example of the present disclosure (with a load balancer);

7 is a schematic diagram of another OLT-CDN implementation method provided by an example of the present disclosure (no load balancer);

8 is a schematic diagram of another OLT-CDN implementation method (IPv6) provided by an example of the present disclosure;

9 is a schematic diagram of an OLT-CDN implementation device provided by an embodiment of the present disclosure;

10 is a schematic diagram of a computer-readable storage medium provided by an embodiment of the present disclosure.

detailed description

Hereinafter, the embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. In the case of no conflict, the embodiments in the present application and the features in the embodiments can be arbitrarily combined with each other.

The steps shown in the flowcharts of the figures can be performed in a computer system such as a set of computer-executable instructions. And, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be performed in an order different from here.

In the IPoE scenario, all signaling and content transmission are carried by the Internet protocol on the access network side. This solution is not very technically different from the traditional CDN, and can be appropriately improved in terms of operation and maintenance management, content distribution algorithm, etc. achieve.

As shown in FIG. 1, the IPoE terminal 105 passes the optical network terminal (Optical Network Terminal, ONT) or optical network unit (Optical Network Unit, ONU) 104, OLT 103, aggregation switch (AGgregation Switch, AGS) 102, BRAS 101 direction The load balancing device of the traditional CDN makes a service request through the Internet protocol, and the load balancing device dispatches it to the OLT-CDN node 106 for service; the service request between the IPoE terminal 105 via the ONT or ONU 104, OLT 103, and the OLT-CDN node 106 And the response is carried out through the Internet protocol; OLT-CDN node 106 and the traditional CDN node back to the source, content distribution and management and control between the CDN management and scheduling network elements through OLT 103, AGS 102, BRAS 101 through the Internet protocol.

As shown in FIG. 2, when PPPoE terminal 205 requests service from OLT-CDN node 206 via ONT or ONU 204, OLT 203, because the PPPoE message is sent, OLT-CDN is based on Internet protocol in the related art, so both parties Cannot communicate normally.

Currently, there is no OLT-CDN solution for PPPoE end users in the industry.

As shown in FIG. 3, an embodiment of the present disclosure provides a network, including: BRAS or AGS 301, OLT 303, PPPoE terminal 305, and OLT-CDN node 306. The ONT or ONU is omitted from this network. In addition, the network may also include superior traditional CDN nodes (not shown in FIG. 3), and CDN management and scheduling network elements (not shown in FIG. 3), where:

The OLT 303 is configured to, when receiving a packet whose target IP address is the IP address of the OLT-CDN node, send the packet to the optical line terminal according to the diversion configuration on the OLT303- Content distribution network node; wherein, the diversion configuration on the OLT303 is to set the diversion target IP address to the IP address of the OLT-CDN node 306, and the target IP address of the message is the IP of the OLT-CDN node 306 At the address, the message is sent to the OLT-CDN node 306; wherein, the message may come from a PPPoE terminal, or may come from a superior traditional CDN node, and/or a CDN management and scheduling network element, etc. The message may be based on the IP protocol, or it may be based on the IP/Point-to-Point Protocol (PPP)/PPPoE protocol;

The OLT-CDN node 306 is configured to receive a service request using the IP/PPP/PPPoE protocol, and the target MAC address in the service request is a MAC address other than the OLT-CDN node; and, send using IP/PPP /PPPoE protocol service response, the source MAC in the service response is not the MAC address of the OLT-CDN node.

In an embodiment, the source MAC in the service response is the target MAC address in the service request.

In an embodiment, the OLT-CDN node 306 is further configured to use the IP protocol to send a content acquisition request message to acquire content when the content misses. In an embodiment, a content request message is sent to a superior traditional CDN node. In addition, the OLT-CDN node 306 uses the IP protocol to accept content pre-distribution, management, or scheduling. That is, the OLT-CDN node 306 interacts with the superior traditional CDN node and the CDN management and scheduling network element through the IP protocol.

As shown in FIG. 4, an embodiment of the present disclosure provides an OLT-CDN implementation method, including:

Step 4010: The OLT-CDN node 306 receives a service request using the IP/PPP/PPPoE protocol. The target MAC address in the service request is not the MAC address of the OLT-CDN node 306. For example, the MAC address of BRAS or AGS301.

Step 4020: The OLT-CDN node 306 sends a service response using the IP/PPP/PPPoE protocol. The source MAC address in the service response is a MAC address other than the OLT-CDN node 306.

In an embodiment, the source MAC address of the service response is the target MAC address in the service request. Wherein, the OLT-CDN node 306 receives the service request from the OLT 303.

In an embodiment, the target IP address in the service request is the IP address of the OLT-CDN node; the source IP address in the service response is the IP address of the OLT-CDN node.

In an embodiment, the value of the session identification field in the PPPoE protocol header of the service response is the same as the value of the session identification field in the PPPoE protocol header of the service request.

In an embodiment, the method further includes: when the content of the OLT-CDN node 306 is missed, the OLT-CDN node 306 sends a content acquisition request message using the IP protocol to acquire the content. In one embodiment, it is sent to the superior traditional CDN node to obtain the content.

In an embodiment, the method further includes: the OLT-CDN node 306 adopts an Internet protocol to accept content pre-distribution, management, or scheduling. That is, the OLT-CDN node 306 interacts with the superior traditional CDN node and the CDN management and scheduling network element through the IP protocol.

In an embodiment, the IP address of the OLT-CDN node 306 includes one or more, and the MAC address of the OLT-CDN node 306 includes one or more. In an embodiment, when there is a local load balancer on the OLT-CDN node 306, it includes an IP address and a MAC address, and when there is no local load balancer on the OLT-CDN node, it includes multiple IP addresses and multiple MAC addresses .

In one embodiment, the IP is any version of the Internet protocol; the PPP is any version of the point-to-point protocol; the PPPoE protocol is any version of the PPPoE protocol, such as the Internet Protocol version 4 (Internet Protocol version 4. IPv4), Internet Protocol Version 6 (Internet Protocol version 6, IPv6). The IP protocol here refers not only to the IP protocol used for service request and service response messages, but also to the IP protocol used between other network elements.

As shown in FIG. 5, an embodiment of the present disclosure provides an optical line terminal-content distribution network implementation method, including:

Step 501: When receiving a message whose target IP address is the IP address of the OLT-CDN node 306, the OLT 303 sends the message to the OLT-CDN node 306 according to the diversion configuration on the OLT 303 .

In an embodiment, the message includes a service request.

In an embodiment, the message includes a back-to-source response.

In the solution provided in this embodiment, the diversion is used to send the message to the OLT-CDN node 306, thereby achieving interaction with the PPPoE terminal.

In an embodiment, when sending the message to the OLT-CDN node 306, the OLT 303 does not change the target MAC address in the message. That is, the target MAC address in the message remains unchanged and is not modified to the MAC address of the OLT-CDN node 306.

An embodiment of the present disclosure provides an OLT-CDN implementation method, as shown in FIG. 3, including the following steps:

Step 310: Perform diversion configuration on the OLT 303, enable the diversion function to the OLT-CDN node 306, and set the diversion target IP address to the IP address of the OLT-CDN node 306;

Step 311: The PPPoE terminal 305 uses the IP/PPP/PPPoE protocol to send a service request to the OLT 303, where the target MAC address of the service request is the MAC address of the BRAS 301, and the target IP address of the service request is the IP address of the OLT-CDN node 306 ;

Step 312: The OLT 303 judges whether the target IP address of the service request is the IP address of the OLT-CDN node 306. If not, the OLT 303 processes it according to the normal business process; if it is, the OLT 303 forwards the request to the OLT-CDN node 306, And the OLT 303 does not modify the target MAC address of the service request to the MAC address of the OLT-CDN node 306, that is, to reserve the target MAC address in the service request;

Step 313: After receiving the service request, the OLT-CDN node 306 processes the service request and sends a service response corresponding to the service request using the IP/PPP/PPPoE protocol. The source MAC address of the service response is BRAS Or the MAC address of AGS301, which is the target MAC address in the service request.

Step 314: The OLT 303 forwards the service response to the PPPoE terminal 305;

Step 315: When the content of the OLT-CDN node 306 misses, the content is returned to the source through the OLT303, BRAS or AGS301 to the traditional CDN node using the IP protocol, and the source MAC address, source IP address, target MAC, and IP address are all adopted. Real MAC, IP address, that is, the source MAC address is the MAC address of the OLT-CDN node 306, the source IP address is the IP address of the OLT-CDN node 306, the target MAC address is the MAC address of the BRAS or AGS 301, the target The IP address is the IP address of the superior traditional CDN node. The superior traditional CDN node and the CDN management and scheduling network element use the IP protocol to control the OLT-CDN node 306, and interact with the OLT-CDN node 306 via BRAS or AGS 301 and OLT 303. When the OLT303 receives the message from the superior traditional CDN node and the CDN management and scheduling network element, if the destination IP address of the message is the IP address of the OLT-CDN node 306, it forwards the message to the OLT-CDN node 306, If the destination IP address of the message is the IP address of the non-OLT-CDN node 306, the normal business process is followed.

The method proposed in this embodiment does not involve the downward movement of the BRAS user plane at all, and it is only a pure layer 2 processing for the OLT, which is completely transparent to the PPPoE terminal and BRAS, and is transparent to the virtual local area network (Virtual Local Area, Network, VLAN) of the access network. ), IP planning also has no impact, the solution provided in this embodiment has small changes to the network and is easy to implement.

In addition, the embodiment of the present disclosure does not limit the version of the protocol adopted by the involved network element, for example, it may be IPv4, IPv6, and so on.

The following further describes this application through specific examples.

Example 1:

In this example, the OLT-CDN node has a local load balancer with only one IP address and MAC address. In addition:

(1) The MAC address of the PPPoE terminal 305 is 88-88-88-88-30-05, and the IPv4 address in a PPP session is 10.10.30.5; the session identifier (Session_ID) in the PPPoE protocol is 0X0000 (0X means Hexadecimal). This specific embodiment takes the IPv4 protocol version as an example;

(2) The MAC address of BRAS or AGS301 is 88-88-88-88-30-01, and the IPv4 address is 10.10.30.1;

(3) The MAC address of the OLT-CDN node 306 is 88-88-88-88-30-06, and the IPv4 address is 10.10.30.6;

(4) The IPv4 address of the superior traditional CDN node is X; the IPv4 address of the CDN management and scheduling network element is Y;

The above MAC address, IP address, and session identification are only examples.

This embodiment provides a method for supporting PPPoE terminals, as shown in FIG. 6, including:

Step 610: On the OLT 303, enable the diversion function to the OLT-CDN node 306, and set the diversion target IPv4 address to the OLT-CDN node 306 IPv4 address 10.10.30.6;

Step 611: The PPPoE terminal 305 sends a service request to the OLT-CDN node 306. The service request is sent using the IPv4/PPP/PPPoE protocol. Among the service requests:

The value of the session identifier (Session_ID) in the PPPoE header is: 0X0000;

The value of the source MAC address is: 88-88-88-88-30-05;

The value of the target MAC address is the MAC address of BRAS or AGS 301: 88-88-88-88-30-01;

The value of the source IPv4 address is: 10.10.30.5;

The value of the target IPv4 address is the IPv4 address of the OLT-CDN node 306: 10.10.30.6;

Step 612: The OLT 303 detects the service request sent by the PPPoE terminal 305, and determines whether the target IP address in the service request is the IP address of the diversion OLT-CDN node 306. In this embodiment, the target IPv4 in the service request The address is: 10.10.30.6, and 10.10.30.6 is the IP address of the OLT-CDN node 306 that the OLT 303 is conducting, and then forwards the service request to the OLT-CDN node 306 instead of BRAS or AGS 301, and the OLT 303 does not modify the target MAC address of the service request to the MAC address of the OLT-CDN node 306; when the target IP address in the service request is the IP address of the OLT-CDN node 306 other than its diversion, forward the service request To BRAS or AGS 301;

Step 613: After receiving the service request forwarded by the OLT 303 and performing corresponding processing, the OLT-CDN node 306 sends a service response using the IPv4/PPP/PPPoE protocol to the OLT 303, where the service response:

The value of Session_ID in the PPPoE header is: 0X0000; it is the same as the value of Session_ID in the PPPoE header in the corresponding service request;

The source MAC address is the MAC address of BRAS or AGS 301: 88-88-88-88-30-01;

The value of the target MAC address is: 88-88-88-88-30-05;

The value of the source IPv4 address is the IPv4 address of the OLT-CDN node 306: 10.10.30.6;

The value of the target IPv4 address is: 10.10.30.5;

Step 614: After receiving the service response, the OLT 303 forwards the service response to the PPPoE terminal 305;

Step 615: When the content of the OLT-CDN node 306 is not hit, the OLT 303 and the BRAS or AGS 301 send back the source request (or content acquisition request message) to the higher-level traditional CDN node using the IP protocol to obtain the content. The source MAC address in the back-to-source request is 88-88-88-88-30-06, the destination MAC address is 88-88-88-88-30-01, the source IPv4 address is 10.10.30.6, and the destination IPv4 address is X.

Step 616, the superior traditional CDN node and the CDN management and scheduling network element adopt the IP protocol to control the OLT-CDN node 306. The superior traditional CDN node and the CDN management and scheduling network element pass the BRAS or AGS 301 and the OLT 303 Interacting with the OLT-CDN node 306, the source IPv4 address in the managed and controlled messages is X or Y, and the target IPv4 address is 10.10.30.

Step 617: After the OLT 303 receives the message (from the superior traditional CDN node and the CDN management and scheduling network element, etc.), when the destination IP address of the message is the IP address 10.10.30.6 of the OLT-CDN node 306, it will report The text is forwarded to the OLT-CDN node 306, otherwise it is processed according to the normal business process.

Example two:

In this example, the OLT-CDN node has no local load balancer and has multiple IP addresses and MAC addresses. Among them:

(1) The MAC address of the PPPoE terminal 305 is 88-88-88-88-30-05, and the IPv4 address in a PPP session is 10.10.30.5; the Session_ID in the PPPoE protocol is 0X0000 (0X means hexadecimal) . This specific embodiment takes the IPv4 protocol version as an example;

(3) The OLT-CDN node 306 includes two media servers, of which the MAC address of the first media server is 88-88-88-88-30-06, the IPv4 address is 10.10.36; the MAC address of the second media server is 88-88-88-88-30-07, the IPv4 address is 10.10.30.7;

As shown in FIG. 7, this embodiment provides a method for supporting PPPoE terminals, including:

Step 710: Enable the function of diversion to the OLT-CDN node 306 on the OLT 303, and set the diversion target IPv4 address to the IPv4 addresses of the OLT-CDN node 306 10.10.30.6, 10.10.30.7;

Step 711: The PPPoE terminal 305 sends a service request to the first media server of the OLT-CDN node 306, using the IPv4/PPP/PPPoE protocol, where, in the service request:

The value of Session_ID in the PPPoE header is: 0X0000;

The value of the source MAC address is: 88-88-88-88-30-05;

The value of the source IPv4 address is: 10.10.30.5;

The value of the target IPv4 address is the IPv4 address of the first media server in the OLT-CDN node 306: 10.10.30.6;

Step 712: The OLT 303 detects the service request sent by the PPPoE terminal 305, and determines whether its target IP address exists in the IP address list of its diversion OLT-CDN node 306. In this embodiment, the target IPv4 address of the service request The value is: 10.10.30.6, and 10.10.30.6 is one of the IP addresses in the media server IP address list of the OLT-CDN node 306 for which the OLT 303 directs, and the service request is forwarded to the OLT-CDN node 306’s The first media server is not BRAS or AGS 301, and OLT303 does not modify the target MAC address of the request message to the MAC address of the first media server of OLT-CDN node 306; when the target IP address in the service request does not exist in its guide When the flow is in the IP address list of the OLT-CDN node 306, forward the service request to BRAS or AGS 301;

Step 713: After receiving the service request forwarded by the OLT 303, the first media server of the OLT-CDN node 306 performs corresponding processing, and then sends a service response using the IPv4/PPP/PPPoE protocol to the OLT 303, where the service response:

The value of Session_ID in the PPPoE header is: 0X0000; the same as the value of Session_ID in the PPPoE header in the corresponding service request;

The value of the target MAC address is: 88-88-88-88-30-05;

The value of the source IPv4 address is the IPv4 address of the first media server of the OLT-CDN node 306: 10.10.30.6;

The value of the target IPv4 address is: 10.10.30.5;

Step 714: After receiving the service response, the OLT 303 forwards the service response to the PPPoE terminal 305;

Step 715: When the content of the first media server of the OLT-CDN node 306 is missed, the content is returned to the source through the OLT303, BRAS or AGS301 to the traditional CDN node using the IP protocol, and the source MAC address of the return request is 88- 88-88-88-30-06, the destination MAC address is 88-88-88-88-30-01, the source IPv4 address is 10.10.30.6, and the destination IPv4 address is X.

Step 716, the superior traditional CDN node and the CDN management and scheduling network element adopt the IP protocol to control the OLT-CDN node 306. The superior traditional CDN node and the CDN management and scheduling network element pass the BRAS or AGS 301, OLT 303 and OLT- The CDN node 306 interacts with each other, and the source IPv4 address in the managed and controlled messages is X or Y, and the target IPv4 address is 10.10.30. 6 or 10.10.30. 7.

Step 717, the OLT 303 receives the message (from the superior traditional CDN node, and CDN management and scheduling network elements, etc.), when the target IP address of the message is the IP address of the media server of the OLT-CDN node 306 10.10. When 30.6 or 10.10.30.7, the message is forwarded to the first media server or the second media server of the OLT-CDN node 306, otherwise it is processed according to the normal business process.

Example three:

In this example:

(1) The MAC address of the PPPoE terminal 305 is 88-88-88-88-30-05, and the IPv6 address in a PPP session is: 10.10.30.5; the Session_ID in the PPPoE protocol is 0X0000 (0X means 16 system). This specific embodiment takes the IPv6 protocol version as an example;

(2) The MAC address of BRAS or AGS 301 is 88-88-88-88-30-01, and the IPv6 address is: 10.10.30.1;

(3) The MAC address of the OLT-CDN node 306 is 88-88-88-88-30-06, and the IPv6 address is: 10.10.30.6;

(4) The IPv6 address of the superior traditional CDN node is X; the IPv6 address of the CDN management and scheduling network element is Y;

As shown in FIG. 8, this embodiment provides a method for supporting PPPoE terminals, including:

Step 810: Enable the function of diversion to the OLT-CDN node 306 on the OLT 303, and set the diversion target IPv6 address to the IPv6 address of the OLT-CDN node 306, namely: 10.10.30.6;

Step 811: The PPPoE terminal 305 sends a service request to the OLT-CDN node 306, using the IPv6/PPP/PPPoE protocol, where, in the service request:

The value of Session_ID in the PPPoE header is: 0X0000;

The value of the source MAC address is: 88-88-88-88-30-05;

The value of the target MAC address is the MAC address of BRAS301: 88-88-88-88-30-01;

The value of the source IPv6 address is::: 10.10.30.5;

The value of the target IPv6 address is the IPv6 address of the OLT-CDN node 306:: 10.10.30.6;

Step 812: The OLT 303 detects the service request sent by the PPPoE terminal 305, and determines whether its target IP address is the IP address of the diversion OLT-CDN node 306. In this embodiment, the target IPv6 address of the service request is: :10.10.30.6, and ::10.10.30.6 is the IP address of the OLT-CDN node 306 for which the OLT303 directs, then forward the service request to the OLT-CDN node 306 instead of BRAS or AGS301, and the OLT303 does not Modify the target MAC address of the request message to the MAC address of the OLT-CDN node 306; when the target IP address in the service request is the IP address of the OLT-CDN node 306 other than its diversion, forward the service request to the BRAS Or AGS 301;

Step 813: After receiving the service request forwarded by the OLT 303 and performing corresponding processing, the OLT-CDN node 306 sends a service response using the IPv6/PPP/PPPoE protocol, where the service response:

The value of Session_ID in the PPPoE header is: 0X0000; the same value as the session ID in the PPPoE header in the corresponding service request;

The value of the source MAC address is the MAC address of BRAS or AGS301: 88-88-88-88-30-01;

The value of the target MAC address is: 88-88-88-88-30-05;

The value of the source IPv6 address is the IPv6 address of the OLT-CDN node 306:: 10.10.30.6;

The value of the destination IPv6 address is:: 10.10.30.5;

Step 814: After receiving the service response, the OLT 303 forwards the service response to the PPPoE terminal 305;

Step 815: When the content of the OLT-CDN node 306 is not hit, the OLT 303, and the BRAS or AGS 301 send a source request to the higher-level traditional CDN node using the IP protocol to obtain the content. The source MAC address of the source request is 88- 88-88-88-30-06, the destination MAC address is 88-88-88-88-30-01, the source IPv6 address is:: 10.10.30.6, and the destination IPv6 address is X.

Step 816, the superior traditional CDN node and the CDN management and scheduling network element adopt the IP protocol for the management and control of the OLT-CDN node 306. Interacting with the OLT-CDN node 306, the source IPv6 address in the managed and controlled messages is X or Y, and the destination IPv6 address is: 10.10.30.6.

Step 817, after the OLT 303 receives the message (from the superior traditional CDN node, CDN management and scheduling network element, etc.), when the destination IP address of the message is the IP address of the OLT-CDN node 306: 10.10.30. 6 The message is forwarded to the OLT-CDN node 306, otherwise it is processed according to the normal business process.

As shown in FIG. 9, an embodiment of the present disclosure provides an optical line terminal-content distribution network implementation device 90, including a memory 910 and a processor 920, where the memory 910 stores a program, and the program is processed by the processor When 920 is read and executed, the OLT-CDN implementation method described in any embodiment is implemented.

For example, the optical line terminal-content distribution network implementation device 90 is located on the OLT-CDN node 306, and when the program is read and executed by the processor 920, implement the OLT-CDN implementation method described in any embodiment ,include:

Receiving a service request using the IP/PPP/PPPoE protocol, the target MAC address in the service request is not the MAC address of the OLT-CDN node 306, and sending a service response using the IP/PPP/PPPoE protocol, the The source MAC address in the service response is not the MAC address of the OLT-CDN node 306.

For another example, the optical line terminal-content distribution network implementation device 90 is located on the OLT 303, and when the program is read and executed by the processor 920, implementing the OLT-CDN implementation method described in any embodiment includes: :

When receiving a message whose target IP address is the IP address of the OLT-CDN node 306, the message is sent to the OLT-CDN node 306 according to the diversion configuration on the OLT 303.

As shown in FIG. 10, an embodiment of the present disclosure provides a computer-readable storage medium 100 that stores one or more programs 110, and the one or more programs 110 can be used by one or Multiple processors execute to implement the method described in any embodiment.

Compared with the related art, in at least one embodiment of the present disclosure, the OLT-CDN node receives a packet whose MAC address is not its own MAC address, and can process IP/PPP/PPPoE packets, and returns IP/PPP/PPPoE after processing Response, and forge the source MAC address. The method proposed in the embodiments of the present disclosure implements support for PPPoE terminals, and does not involve the BRAS user plane downward at all. It is only required to perform pure Layer 2 processing on the OLT, and is completely transparent to PPPoE terminals and BRAS, and is transparent to the access network. The VLAN and IP planning have no impact, and the solution provided in this embodiment has small changes to the network and is easy to implement.

Those of ordinary skill in the art may understand that all or some of the steps, systems, and functional modules/units in the method disclosed above may be implemented as software, firmware, hardware, and appropriate combinations thereof. In a hardware implementation, the division between the functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, a physical component may have multiple functions, or a function or step may be composed of multiple The physical components are executed in cooperation. Some or all components may be implemented as software executed by a processor, such as a digital signal processor or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer-readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes volatile and nonvolatile, removable and non-removable implemented in a variety of methods or technologies for storing information such as computer readable instructions, data structures, program modules or other data In addition to the medium. Computer storage media include random access memory (Random Access Memory, RAM), read-only memory (Read-Only Memory, ROM), electrically erasable programmable read-only memory (Electrically, Programmable read only memory (EEPROM), flash memory or other Memory technology, CD-ROM (Compact Disc Read-Only Memory, CD-ROM), Digital Versatile Disc (DVD) or other optical disc storage, magnetic box, magnetic tape, magnetic disk storage or other magnetic storage device, or can Various other media for storing desired information and accessible by a computer. Communication media typically 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 a variety of information delivery media.

Claims

An optical line terminal-content distribution network implementation method, including:

The optical line terminal-content distribution network node receives a service request using the Internet protocol/point-to-point protocol/Ethernet-based point-to-point protocol, and the target media access control address in the service request is not the optical line terminal-content distribution network node Media access control address;

The optical line terminal-content distribution network node sends a service response using the Internet protocol/the point-to-point protocol/the Ethernet-based point-to-point protocol, and the source media access control address in the service response is not Optical line terminal-media access control address of the content distribution network node.
The method according to claim 1, wherein the source media access control address in the service response is the target media access control address in the service request.
The method according to claim 1, wherein the target Internet protocol address in the service request is the Internet protocol address of the optical line terminal-content distribution network node; the source Internet protocol address in the service response is the Optical line terminal-Internet protocol address of the content distribution network node.
The method according to claim 1, wherein the value of the session identification field in the header of the Ethernet-based peer-to-peer protocol of the service response and the header of the Ethernet-based peer-to-peer protocol of the service request The value of the session ID field is the same.
The method according to any one of claims 1 to 4, further comprising: in the case where the content of the optical line terminal-content distribution network node misses, the optical line terminal-content distribution network node adopts the Internet The protocol sends a get content request message to get the content.
The method according to any one of claims 1 to 4, further comprising: the optical line terminal-content distribution network node adopting the Internet protocol to accept content pre-distribution, management or scheduling.
The method according to any one of claims 1 to 4, wherein the Internet protocol address of the optical line terminal-content distribution network node includes one or more, and media access of the optical line terminal-content distribution network node The control address includes one or more.
The method according to any one of claims 1 to 4, wherein the Internet protocol is any version of the Internet protocol; the point-to-point protocol is any version of the point-to-point protocol; and the Ethernet-based point-to-point protocol is any A version of an Ethernet-based point-to-point protocol.
An optical line terminal-content distribution network implementation method, including:

When the optical line terminal receives a packet whose target Internet protocol address is the Internet protocol address of the optical line terminal-content distribution network node, according to the diversion configuration on the optical line terminal, the packet is sent to all The optical line terminal-content distribution network node; wherein, the message includes a service request.
The method according to claim 9, wherein the optical line terminal does not change the target media access control in the message when sending the message to the optical line terminal-content distribution network node address.
An optical line terminal-content distribution network implementation device includes a memory and a processor, and the memory stores a program, and when the program is read and executed by the processor, the program is implemented as claimed in any one of claims 1 to 10. Described method.
A computer-readable storage medium storing one or more programs, the one or more programs can be executed by one or more processors to implement any one of claims 1 to 10 Item.
A network system includes: an optical line terminal and an optical line terminal-content distribution network node, wherein:

The optical line terminal is configured to, according to the diversion configuration on the optical line terminal, upon receiving a packet whose target Internet protocol address is the Internet protocol address of the optical line terminal-content distribution network node The message is sent to the optical line terminal-content distribution network node; wherein, the message includes a service request;

The optical line terminal-content distribution network node is configured to receive the service request using Internet protocol/point-to-point protocol/Ethernet-based point-to-point protocol, and the target media access control address in the service request is not the optical Line terminal-media access control address of the content distribution network node; and, sending a service response using the Internet protocol/the point-to-point protocol/the Ethernet-based point-to-point protocol, and the source media access control of the service response The address is an optical line terminal-content distribution network address other than the optical line terminal-content distribution network node.