CN111385338B - Method and device for realizing optical line terminal-content distribution network, medium and network - Google Patents
Method and device for realizing optical line terminal-content distribution network, medium and network Download PDFInfo
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- CN111385338B CN111385338B CN201811644773.8A CN201811644773A CN111385338B CN 111385338 B CN111385338 B CN 111385338B CN 201811644773 A CN201811644773 A CN 201811644773A CN 111385338 B CN111385338 B CN 111385338B
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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
- H04L67/104—Peer-to-peer [P2P] networks
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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
- H04L47/12—Avoiding congestion; Recovering from congestion
- H04L47/125—Avoiding congestion; Recovering from congestion by balancing the load, e.g. traffic engineering
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/10—Network architectures or network communication protocols for network security for controlling access to devices or network resources
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/40—Support for services or applications
Abstract
The application discloses a method and a device for realizing an optical line terminal-content distribution network, a computer readable storage medium and a network system, wherein the method for realizing the optical line terminal-content distribution network comprises the following steps: an optical line terminal-content distribution network node receives a service request adopting an internet protocol/point-to-point protocol based on Ethernet, wherein a target media access control address in the service request is a media access control address which is not the optical line terminal-content distribution network node; the optical line terminal-content distribution network node sends a service response adopting an internet protocol/point-to-point protocol based on Ethernet, and a source media access control address in the service response is a media access control address which is not the optical line terminal-content distribution network node. The scheme provided by the embodiment realizes the support of the PPPoE terminal, has small change to the network and is convenient to implement.
Description
Technical Field
The embodiment of the invention relates to a method and a device for realizing an OLT (Optical Line Terminal) -CDN (Content Delivery Network), a computer readable storage medium and a Network system.
Background
The CDN is an overlay network on a telecommunication operator IP (Internet Protocol) transmission network, and by distributively storing content at a location close to a user, the user provides a service to the user nearby when accessing, so as to improve user experience and reduce consumption of a backbone network transmission bandwidth.
At present, in an internet CDN, nodes are generally deployed in a Center of a telecommunication operator and a local Data Center (DC) machine room, which are located on a backbone network and a metropolitan area network level, and the telecommunication operator CDN just sinks the nodes to a BRAS (Broadband Remote Access Server) side county DC machine room at the lowest level, and in any case, the deployment positions of the CDN nodes in the network are higher (farther from a terminal user), video services such as cloud VR (Virtual Reality) with a very high response delay requirement or a very high bandwidth requirement are required, and the existing CDN deployment positions cannot meet the service delay requirement, and the bandwidth pressure on the metropolitan area network is also very high.
The industry is now beginning to consider further sinking of CDN nodes into the access network. For IPoE (Internet Protocol over Ethernet) end users, 1-2 telecom equipment providers in the industry are proposing OLT (Optical Line Terminal) -CDN solutions to sink the CDN to the OLT side. In the IPoE scenario, all signaling and content transmission are carried by the IP protocol on the access network side, which is not very different from the conventional CDN in technology and can be implemented only by appropriate improvements in the aspects of operation and maintenance management, content distribution algorithm, and the like.
As shown in fig. 1, an IPoE Terminal 105 makes a service request to a load balancing device of a conventional CDN through an IP protocol via an ONT or an ONU (Optical Network Terminal or Optical Network Unit) 104, an OLT103, an AGS (AGgregation Switch) 102, and a BRAS101, and the load balancing device schedules the service request to an OLT-CDN node 106 for service; the service request and response between the IPoE terminal 105 and the OLT-CDN node 106 via the ONT or ONU104, OLT103 are all performed by an IP protocol; the back source, content delivery and management and control between the OLT-CDN node 106 and the traditional CDN node, as well as between the CDN management and scheduling network elements are performed by the OLT103, the AGS102 and the BRAS101 through IP protocols.
However, in addition to IPoE end users, the telecom operator's current network has many PPPoE (Point to Point Protocol over Ethernet) end users. For PPPoE end users, the proposed OLT-CDN IPoE scheme cannot serve such users because the PPPoE link is terminated on a BRAS.
Disclosure of Invention
At least one embodiment of the present invention provides an OLT-CDN implementation method and apparatus, a computer-readable storage medium, and a network system, which implement support for a PPPoE end user.
At least one embodiment of the present invention provides an optical line terminal-content distribution network implementation method, including:
an optical line terminal-content distribution network node receives a service request adopting an internet protocol/point-to-point protocol based on Ethernet, wherein a target media access control address in the service request is a media access control address which is not the optical line terminal-content distribution network node;
and the optical line terminal-content distribution network node sends a service response adopting an internet protocol/point-to-point protocol based on Ethernet, wherein a source media access control address in the service response is a media access control address which is not the optical line terminal-content distribution network node.
At least one embodiment of the present invention provides an optical line terminal-content distribution network implementation method, including:
when receiving a message with a target internet protocol address being the internet protocol address of an optical line terminal-content distribution network node, an optical line terminal sends the message to the optical line terminal-content distribution network node according to the diversion configuration on the optical line terminal.
At least one embodiment of the present invention provides an olt-content distribution network implementation apparatus, including a memory and a processor, where the memory stores a program, and the program, when read and executed by the processor, implements the olt-content distribution network implementation method according to any embodiment.
At least one embodiment of the present invention provides a computer-readable storage medium storing one or more programs, which are executable by one or more processors to implement the olt-content distribution network implementation method according to any one of the embodiments.
At least one embodiment of the present invention provides a network system, including: optical line terminal, optical line terminal-content distribution network node, wherein:
the optical line terminal is used for sending a message to the optical line terminal-content distribution network node according to the diversion configuration on the optical line terminal when receiving the message of which the target internet protocol address is the internet protocol address of the optical line terminal-content distribution network node;
the optical line terminal-content distribution network node is used for receiving a service request adopting an internet protocol/point-to-point protocol based on Ethernet, and a target media access control address in the service request is a media access control address which is not the optical line terminal-content distribution network node; and sending a service response adopting an internet protocol/point-to-point protocol based on Ethernet, wherein the source media access control address of the service response is an optical line terminal-content distribution network address which is not the optical line terminal-content distribution network node.
Compared with the prior art, in at least one embodiment of the invention, the OLT-CDN node receives the message of which the MAC address is not the MAC address of the OLT-CDN node, can process the IP/PPP/PPPoE message, returns an IP/PPP/PPPoE response after processing, and forges the source MAC address. The implementation method provided by the embodiment implements the support of the PPPoE terminal, does not involve the downward movement of the user plane of the BRAS at all, only needs two-layer processing on the OLT, is completely transparent to the PPPoE terminal and the BRAS, and has no influence on the planning of VLAN and IP of an access network.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The accompanying drawings are included to provide a further understanding of the present invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the example serve to explain the principles of the invention and are not intended to limit the invention.
FIG. 1 is a schematic diagram of a system architecture in which an OLT-CDN supports an IPoE terminal;
fig. 2 is a schematic diagram of a system architecture in which an OLT-CDN cannot support a PPPoE terminal in the related art;
FIG. 3 is a schematic diagram of a network system architecture according to an embodiment of the present invention;
fig. 4 is a schematic diagram of an OLT-CDN implementation method (OLT-CDN node side) according to an embodiment of the present invention;
fig. 5 is a schematic diagram (OLT side) of an OLT-CDN implementation method according to another embodiment of the present invention;
fig. 6 is a schematic diagram of an OLT-CDN implementation method (with a load balancer) according to an embodiment of the present invention;
fig. 7 is a schematic diagram (no-load balancer) of an OLT-CDN implementation method according to an embodiment of the present invention;
fig. 8 is a schematic diagram (IPv 6) of an OLT-CDN implementation method provided in an embodiment of the present invention;
fig. 9 is a schematic diagram of an OLT-CDN implementing device according to an embodiment of the present invention;
fig. 10 is a schematic diagram of a computer-readable storage medium according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
The steps illustrated in the flow charts of the figures may be performed in a computer system such as a set of computer-executable instructions. Also, while a logical order is shown in the flow diagrams, in some cases, the steps shown or described may be performed in an order different than here.
As shown in fig. 2, when the PPPoE terminal 205 requests a service to the OLT-CDN node 206 through the ONT or the ONU204, the OLT203 sends a PPPoE message, and the existing OLT-CDN is based on an IP protocol, so that the two parties cannot communicate normally.
The current industry has not yet provided an OLT-CDN solution for serving PPPoE end users.
As shown in fig. 3, an embodiment of the present invention provides a network, including: BRAS or AGS301, OLT303, PPPoE terminal 305 and OLT-CDN node 306. It should be noted that ONTs or ONUs are omitted from the network. In addition, the network may further include an upper-level legacy CDN node (not shown in fig. 3), and the CDN management and scheduling network element (not shown in fig. 3), where:
the OLT303 is configured to, when receiving a message whose target IP address is an IP address of the OLT-CDN node, send the message to the optical line terminal-content delivery network node according to the diversion configuration on the OLT 303; the flow guiding configuration on the OLT303 sets a flow guiding target IP address as the IP address of the OLT-CDN node 306, and sends a message to the OLT-CDN node 306 when the target IP address of the message is the IP address of the OLT-CDN node 306; the message may be from a PPPoE terminal, or may be from a higher-level traditional CDN node, a CDN management and scheduling network element, and the like. The message can be based on an IP protocol or an IP/PPP/PPPoE protocol;
the OLT-CDN node 306 is configured to receive a service request using an IP/PPP/PPPoE protocol, where a target MAC address in the service request is a MAC address that is not the OLT-CDN node; and sending a service response adopting an IP/PPP/PPPoE protocol, wherein a source MAC in the service response is a MAC address which is not the OLT-CDN node.
In an embodiment, the source MAC in the service response is the destination MAC address in the service request.
In an embodiment, the OLT-CDN node 306 is further configured to send a get content request message using an IP protocol to get content when the content is missing. Specifically, the request message for obtaining the content is sent to the superior traditional CDN node. In addition, the OLT-CDN node 306 accepts content pre-distribution, management, or scheduling using IP protocols. Namely, the OLT-CDN node 306 interacts with an upper-level legacy CDN node, a CDN management and scheduling network element through an IP protocol.
As shown in fig. 4, an embodiment of the present invention provides an OLT-CDN implementation method, including:
In an embodiment, the source MAC address of the service response is the destination MAC address in the service request. Wherein OLT-CDN node 306 receives the service request from OLT 303.
In an embodiment, the target IP address in the service request is an IP address of the OLT-CDN node; and the source IP address in the service response is the IP address of the OLT-CDN node.
In an embodiment, a value of a session identifier field in the PPPoE protocol header of the service response is the same as a value of a session identifier field in the PPPoE protocol header of the service request.
In an embodiment, the method further comprises: when the content of the OLT-CDN node 306 is not hit, the OLT-CDN node 306 sends a request message for obtaining the content using an IP protocol to obtain the content. Specifically, the content is sent to an upper-level traditional CDN node to obtain the content.
In an embodiment, the method further comprises: the OLT-CDN node 306 receives content pre-distribution, management, or scheduling using an internet protocol. Namely, the OLT-CDN node 306 interacts with an upper-level legacy CDN node, a CDN management and scheduling network element through an 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. Generally, the OLT-CDN node 306 includes one IP address and one MAC address when having a local load balancer thereon, and includes a plurality of IP addresses and a plurality of MAC addresses when having no local load balancer thereon.
In an embodiment, the IP or PPP or PPPoE protocol is any version of IP or PPP or PPPoE protocol, such as IPv4, IPv6. It should be noted that the IP protocol herein refers not only to the IP protocol used for the service request and service response messages, but also includes IP protocols used among other network elements.
As shown in fig. 5, an embodiment of the present invention provides an optical line terminal-content distribution network implementation method, including:
in step 501, when receiving a message with a target IP address as the IP address of the OLT-CDN node 306, the oltt 303 sends the message to the OLT-CDN node 306 according to the diversion configuration on the OLT 303.
In the solution provided in this embodiment, the message is sent to the OLT-CDN node 306 through the diversion, so as to implement interaction with the PPPoE terminal.
In an embodiment, when the OLT303 sends the message to the OLT-CDN node 306, the target MAC address in the message is not changed. That is, the target MAC address in the message is maintained unchanged, and is not modified to the MAC address of the OLT-CDN node 306.
An embodiment of the present invention provides an OLT-CDN implementation method, as shown in fig. 3, including the following steps:
step 310: the OLT303 performs flow guide configuration, starts a function of guiding flow to the OLT-CDN node 306, and sets a flow guide target IP address as an IP address of the OLT-CDN node 306;
step 311: the PPPoE terminal 305 sends a service request to the OLT303 by using an IP/PPP/PPPoE protocol, where a target MAC (Media Access Control) address of the service request is a MAC address of the BRAS301, and a target IP address of the service request is an IP address of the OLT-CDN node 306;
step 312: the OLT303 judges whether the target IP address of the service request is the IP address of the OLT-CDN node 306, if not, the OLT303 processes according to a normal business process; if so, the OLT303 forwards the request to the OLT-CDN node 306, and the OLT303 does not modify the target MAC address of the service request to the MAC address of the OLT-CDN node 306, that is, retains 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 and using an IP/PPP/PPPoE protocol, where a source MAC address of the service response is a MAC address of a BRAS or an AGS301, that is, a target MAC address in the service request.
Step 314: the OLT303 forwards the service response to the PPPoE terminal 305;
step 315: when the content of the OLT-CDN node 306 is not hit, the OLT303, the BRAS, or the AGS301 returns the source to the upper-level traditional CDN node by using an IP protocol to obtain the content, and the source MAC address, the source IP address, the target MAC address, and the IP address all use real MAC and IP addresses, 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 the AGS301, and the target IP address is the IP address of the upper-level traditional CDN node. The upper-level traditional CDN node and the CDN management and scheduling network element interact with the OLT-CDN node 306 through the BRAS or AGS301 and the OLT303 by using an IP protocol for controlling the OLT-CDN node 306. When receiving a message from a higher-level traditional CDN node and a CDN management and scheduling network element, the OLT303 forwards the message to the OLT-CDN node 306 if a target IP address of the message is an IP address of the OLT-CDN node 306, and processes the message according to a normal service flow if the target IP address of the message is an IP address of a non-OLT-CDN node 306.
The implementation method provided by the embodiment does not involve the downward movement of the BRAS user plane at all, only needs two-layer processing on the OLT, is completely transparent to the PPPoE terminal and the BRAS, and has no influence on the planning of the VLAN and the IP of the access network.
In addition, the embodiment of the present invention does not limit the version of the protocol used by the related network element, and may be, for example, IPv4, IPv6, or the like.
The application is further illustrated by the following specific examples.
The first embodiment is as follows:
in this embodiment, the OLT-CDN node has a local load balancer, and has only one IP address and one MAC address, and in addition:
(1) The MAC address of the PPPoE terminal 305 is 88-88-88-30-05, and the IPv4 address in one PPP session is 10.10.30.5; the Session identification (Session _ ID) in the PPPoE protocol is 0X0000 (0X denotes 16 ary). The specific embodiment takes an IPv4 protocol version as an example;
(2) The MAC address of BRAS or AGS301 is 88-88-88-88-30-01, 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 upper-level traditional CDN node is X; the IPv4 address of the CDN management and scheduling network element is Y;
it should be noted that the MAC address, the IP address, and the session identifier are only examples.
The present embodiment provides a method for supporting a PPPoE terminal, as shown in fig. 6, including:
step 610: enabling a function of guiding flow to an OLT-CDN node 306 on an OLT303, and setting a flow guiding target IPv4 address as an IPv4 address 10.10.30.6 of the OLT-CDN node 306;
step 611: the PPPoE terminal 305 sends a service request to the OLT-CDN node 306, where the service request is sent using an IPv4/PPP/PPPoE protocol, where in the service request:
the value of the Session identification (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 the BRAS or the 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 OLT303 detects a service request sent by the PPPoE terminal 305, and determines whether a target IP address in the service request is an IP address of the OLT-CDN node 306 guided by the service request, in this embodiment, a target IPv4 address in the service request is: 10.10.30.6, and 10.10.30.6 is the IP address of OLT-CDN node 306 that OLT303 directs, forwarding the service request to OLT-CDN node 306 instead of BRAS or AGS301, and OLT303 does not modify the target MAC address of the service request to be the MAC address of OLT-CDN node 306; when the target IP address in the service request is the IP address of the OLT-CDN node 306 which is not the diversion of the service request, forwarding the service request to a BRAS or an AGS301;
step 613: after receiving the service request forwarded by OLT303 and performing corresponding processing, OLT-CDN node 306 sends a service response using an IPv4/PPP/PPPoE protocol to OLT303, where in the service response:
the value of Session _ ID in 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 AGS 301: 88-88-88-88-30-01;
the value of the destination 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, OLT303 forwards the service response to PPPoE terminal 305;
step 615: when the content of the OLT-CDN node 306 misses, an OLT303, a BRAS, or an AGS301 sends a source return request (or called a content acquisition request message) to a higher-level conventional CDN node by using an IP protocol to acquire the content, where a source MAC address in the source return request is 88-88-88-88-30-06, a target MAC address is 88-88-88-88-30-01, a source IPv4 address is 10.10.30.6, and a target IPv4 address is X.
In step 616, the upper-level traditional CDN node and CDN management and scheduling network element interact with the OLT-CDN node 306 through the BRAS or AGS301 and the OLT303, and a source IPv4 address in a managed related message is X or Y, and a target IPv4 address is 10.10.30.6.
In step 617, after receiving the message (from the upper-level traditional CDN node, the CDN management and scheduling network element, and the like), the oltt 303 forwards the message to the OLT-CDN node 306 when the target IP address of the message is the IP address 10.10.30.6 of the OLT-CDN node 306, and otherwise, processes the message according to the normal service flow.
Example two:
in this embodiment, the OLT-CDN node has no local load balancer, and has a plurality of IP addresses and MAC addresses, where:
(1) The MAC address of the PPPoE terminal 305 is 88-88-88-30-05, and the IPv4 address in one PPP session is 10.10.30.5; session _ ID in PPPoE protocol is 0X0000 (0X denotes 16 ary). The specific embodiment takes an IPv4 protocol version as an example;
(2) The MAC address of BRAS or AGS301 is 88-88-88-88-30-01, the IPv4 address is 10.10.30.1;
(3) The OLT-CDN node 306 comprises two media servers, wherein the MAC address of the first media server is 88-88-88-88-30-06, and the IPv4 address is 10.10.30.6; the MAC address of the second media server is 88-88-88-88-30-07, the IPv4 address is 10.10.30.7;
(4) The IPv4 address of the upper-level traditional CDN node is X; the IPv4 address of the CDN management and scheduling network element is Y;
as shown in fig. 7, the present embodiment provides a method for supporting a PPPoE terminal, including:
step 710: enabling a function of guiding flow to an OLT-CDN node 306 on an OLT303, and setting a flow guiding target IPv4 address as IPv4 addresses 10.10.30.6 and 10.10.30.7 of the OLT-CDN node 306;
step 711: the PPPoE terminal 305 sends a service request to a first media server of the OLT-CDN node 306, and uses an IPv4/PPP/PPPoE protocol, where in the service request:
the value of Session _ ID in 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 the BRAS or the 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 first media server in the OLT-CDN node 306: 10.10.30.6;
step 712: the OLT303 detects a service request sent by the PPPoE terminal 305, and determines whether a target IP address of the service request exists in an IP address list of the OLT-CDN node 306 for stream guidance, where in this embodiment, a value of a target IPv4 address of the service request is: 10.10.30.6, and 10.10.30.6 is one of the IP addresses in the IP address list of the media server of OLT-CDN node 306 that OLT303 directs, forward the service request to the first media server of OLT-CDN node 306 instead of BRAS or AGS301, and OLT303 does not modify the target MAC address of the request message to be 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 the IP address list of the OLT-CDN node 306 for guiding the service request, forwarding the service request to a BRAS or an AGS301;
step 713: after receiving the service request forwarded by OLT303 and performing corresponding processing, the first media server of OLT-CDN node 306 sends a service response using an IPv4/PPP/PPPoE protocol to OLT303, where in the service response:
the value of Session _ ID in PPPoE header is: 0X0000; the value of the Session _ ID corresponding to the PPPoE header in the service request is the same;
the value of the source MAC address is the MAC address of BRAS or AGS 301: 88-88-88-88-30-01;
the value of the destination 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, OLT303 forwards the service response to PPPoE terminal 305;
step 715: when the content of the first media server of the OLT-CDN node 306 is not hit, the OLT303, the BRAS, or the AGS301 returns the source to the upper-level traditional CDN node by using an IP protocol to obtain the content, where the source MAC address of the return request is 88-88-88-30-06, the target MAC address is 88-88-88-88-30-01, the source IPv4 address is 10.10.30.6, and the target IPv4 address is X.
In step 716, the upper-level traditional CDN node and CDN management and scheduling network element manage and control the OLT-CDN node 306 by using an IP protocol, interact with the OLT-CDN node 306 through the BRAS or AGS301 and the OLT303, and a source IPv4 address in a related managed message is X or Y, and a target IPv4 address is 10.10.30.6 or 10.10.30.7.
In step 717, after receiving the message (from the upper-level traditional CDN node, the CDN management and scheduling network element, and the like), the oltt 303 forwards the message to the first media server or the second media server of the OLT-CDN node 306 when the target IP address of the message is the IP address 10.10.30.6 or 10.10.30.7 of the media server of the OLT-CDN node 306, or else, processes the message according to the normal service flow.
Example three:
in this embodiment:
(1) The MAC address of the PPPoE terminal 305 is 88-88-88-30-05, and the IPv6 address in one PPP session is 10.10.30.5; session _ ID in PPPoE protocol is 0X0000 (0X denotes 16 systems). The specific embodiment takes an IPv6 protocol version as an example;
(2) The MAC address of BRAS or AGS301 is 88-88-88-88-30-01, 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 upper-level 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 a PPPoE terminal, including:
step 810: the function of guiding the flow to the OLT-CDN node 306 is started on the OLT303, and the flow guiding target IPv6 address is set as 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, and uses an IPv6/PPP/PPPoE protocol, where in the service request:
the value of Session _ ID in 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 301: 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 OLT303 detects a service request sent by the PPPoE terminal 305, and determines whether a target IP address of the service request is an IP address of the OLT-CDN node 306 for stream guidance, where in this embodiment, a value of a 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 that the OLT303 directs, then the service request is forwarded to the OLT-CDN node 306 instead of the BRAS or AGS301, and the target MAC address of the request message is not modified by the OLT303 to be 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 which is not the diversion of the service request, forwarding the service request to a BRAS or an AGS301;
step 813: after receiving the service request forwarded by OLT303 and performing corresponding processing, OLT-CDN node 306 sends a service response using an IPv6/PPP/PPPoE protocol, where in the service response:
the value of Session _ ID in PPPoE header is: 0X0000; the value of the session identifier in the header of the PPPoE corresponding to the service request is the same;
the value of the source MAC address is the MAC address of BRAS or AGS 301: 88-88-88-88-30-01;
the value of the destination 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 target IPv6 address is: 10.10.30.5;
step 814: after receiving the service response, OLT303 forwards the service response to PPPoE terminal 305;
step 815: when the content of the OLT-CDN node 306 is not hit, an OLT303, a BRAS or an AGS301 sends a source returning request to a superior traditional CDN node by adopting an IP protocol to acquire the content, wherein the source MAC address of the source returning request is 88-88-88-88-30-06, the target MAC address is 88-88-88-88-30-01, the source IPv6 address is 10.10.30.6, and the target IPv6 address is X.
In step 817, after receiving the message (from the upper-level traditional CDN node, CDN management and scheduling network element, etc.), the oltt 303 forwards the message to the OLT-CDN node 306 when the target IP address of the message is the IP address of the OLT-CDN node 306:: 10.10.30.6, otherwise, processes the message according to the normal service flow.
As shown in fig. 9, an optical line terminal-content distribution network implementation apparatus 90 according to an embodiment of the present invention includes a memory 910 and a processor 920, where the memory 910 stores a program, and when the program is read and executed by the processor 920, the program implements the OLT-CDN implementation method according to any embodiment.
For example, the optical line terminal-content distribution network implementing apparatus 90 is located on the OLT-CDN node 306, and when the program is read and executed by the processor 920, the method for implementing the OLT-CDN described in any embodiment includes:
receiving a service request adopting an IP/PPP/PPPoE protocol, wherein a target MAC address in the service request is a MAC address which is not the OLT-CDN node 306, and sending a service response adopting the IP/PPP/PPPoE protocol, wherein a source MAC address in the service response is a MAC address which is not the OLT-CDN node 306.
For another example, the optical line terminal-content distribution network implementing apparatus 90 is located on the OLT303, and when the program is read and executed by the processor 920, the method for implementing the OLT-CDN according to any embodiment includes:
when a message with a target IP address as the IP address of the OLT-CDN node 306 is received, 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 invention provides a computer-readable storage medium 100, where one or more programs 110 are stored, and the one or more programs 110 are executable by one or more processors to implement the OLT-CDN implementation method according to any embodiment.
It will be understood by those of ordinary skill in the art that all or some of the steps of the methods, systems, functional modules/units in the devices disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. In a hardware implementation, the division between functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be performed by several physical components in cooperation. Some or all of the 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 media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as is well known to those of ordinary skill in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can accessed by a computer. In addition, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media as known to those skilled in the art.
Claims (11)
1. An optical line terminal-content distribution network implementation method comprises the following steps:
an optical line terminal-content distribution network node receives a service request adopting an internet protocol or a point-to-point protocol, wherein a target media access control address in the service request is a media access control address of a BRAS (broadband remote access server) or an AGS (access gateway server), and a target internet protocol address in the service request is an internet protocol address of the optical line terminal-content distribution network node;
the method comprises the steps that the optical line terminal-content distribution network node sends a service response adopting an internet protocol or a point-to-point protocol, a source media access control address in the service response is a media access control address of a BRAS or an AGS, and a source internet protocol address in the service response is an internet protocol address of the optical line terminal-content distribution network node.
2. The olt-content distribution network implementation method of claim 1, wherein a source mac address in the service response is a target mac address in the service request.
3. The olt-content distribution network implementation method of claim 1, wherein the point-to-point protocol comprises an ethernet-based point-to-point protocol; and the value of the session identification field in the Ethernet-based point-to-point protocol header of the service response is the same as that of the session identification field in the Ethernet-based point-to-point protocol header of the service request.
4. The olt-content distribution network implementation method of any of claims 1-3, wherein the method further comprises: and when the content of the OLT-content distribution network node is not hit, the OLT-content distribution network node sends a content acquisition request message by adopting an Internet protocol to acquire the content.
5. The olt-content distribution network implementation method of any of claims 1-3, wherein the method further comprises: the optical line terminal-content distribution network node adopts an internet protocol to receive content pre-distribution, management or scheduling.
6. The olt-content distribution network implementation method according to any one of claims 1 to 3, wherein the ip addresses of the olt-content distribution network nodes include one or more ip addresses, and the mac addresses of the olt-content distribution network nodes include one or more mac addresses.
7. The olt-content distribution network implementation method of any of claims 1-3, wherein the internet protocol or peer-to-peer protocol is any version of the internet protocol or peer-to-peer protocol.
8. An optical line terminal-content distribution network implementation method comprises the following steps:
when receiving a message with a target Internet protocol address of an optical line terminal-content distribution network node and a target media access control address of a BRAS or an AGS, an optical line terminal sends the message to the optical line terminal-content distribution network node according to the diversion configuration on the optical line terminal, and when sending the message to the optical line terminal-content distribution network node, the optical line terminal does not change the target media access control address in the message.
9. An olt-content distribution network implementation apparatus comprising a memory and a processor, wherein the memory stores a program that, when read and executed by the processor, implements the olt-content distribution network implementation method according to any one of claims 1 to 8.
10. A computer-readable storage medium storing one or more programs, the one or more programs being executable by one or more processors to implement the olt-content distribution network implementation method according to any one of claims 1 to 8.
11. A network system, comprising: optical line terminal, optical line terminal-content distribution network node, wherein: the optical line terminal is used for sending a message to the optical line terminal-content distribution network node according to flow guide configuration on the optical line terminal when receiving the message of which the target internet protocol address is the internet protocol address of the optical line terminal-content distribution network node and the target media access control address is the media access control address of the BRAS or the AGS, and the optical line terminal does not change the target media access control address in the message when sending the message to the optical line terminal-content distribution network node;
the optical line terminal-content distribution network node is used for receiving a service request adopting an internet protocol or a point-to-point protocol, wherein a target media access control address in the service request is a media access control address of a BRAS (broadband remote access system) or an AGS (access gateway system), and a target internet protocol address in the service request is an internet protocol address of the optical line terminal-content distribution network node; and sending a service response adopting an internet protocol or a point-to-point protocol, wherein a source media access control address of the service response is a media access control address of a BRAS or an AGS, and a source internet protocol address in the service response is an internet protocol address of the OLT-content distribution network node.
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| PCT/CN2019/129931 WO2020135871A1 (en) | 2018-12-29 | 2019-12-30 | Optical line terminal-content delivery network implementation method and apparatus, and medium and network system |
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