System and method for content caching based on virtual network interface

A technology of virtual network interface and network interface, which is applied in the field of content caching and content caching based on virtual network interface, can solve problems such as time-consuming, and achieve the effect of improving processing performance, solving the problem of forwarding packets of interest, and solving the problem of waiting.

Active Publication Date: 2019-11-19
北京中科海网科技有限公司
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Problems solved by technology

[0005] However, when an Interest message is received, it is a very time-consuming operation to search the local cache. This operation must be done regardless of whether there is data locally; in addition, when there is no data locally, the PIT table is first searched. , to see if there is an entry record, if there is, add the arrival port of the Interest packet to the PIT table

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  • System and method for content caching based on virtual network interface
  • System and method for content caching based on virtual network interface
  • System and method for content caching based on virtual network interface

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Embodiment Construction

[0026] The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0027] figure 1 It is a schematic diagram of the sequence of accessing components when a network node in NDN receives an Interest message. Such as figure 1 As shown in Fig. 1, the sequence of accessing components when a network node receives an Interest packet in NDN, receives the Interest packet, and sequentially accesses the Content Store (CS), Forwarding Information Table (FIB) and Unanswered Interest Table (PIT). Among them, access to the content store (CS) determines the processing performance.

[0028] figure 2 It is a schematic diagram of the sequence of accessing components when a network node in NDN receives a data message. Such as figure 2 As shown in Fig. 1 , the network nodes in NDN access the sequence of components when receiving a data packet, receive the data packet, and access the unacknowledged ...

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Abstract

The invention relates to a content cache system and method based on virtual network interfaces. A pending interest table and a forwarding information base are allocated in a memory of a network device. The virtual network interfaces are added to the pending interest table and the forwarding information base. When interest messages are received, the pending interest table is searched according to the received interest messages. If no corresponding table entry is matched, a new table entry is interposed into the pending interest table, the virtual network interfaces or network interfaces stored by a plug-in network are added to the new table entry and the interest messages are forwarded according to the forwarding information base. For received data messages, the data messages are sent to a storage device and the network interfaces entered by corresponding interest messages according to the pending interest table. According to the system and the method, the waiting problem when the network device in an information center network processes access cache is solved, moreover, the interest message forwarding delay problem when the cache is not hit is solved, the waiting problem when the network device accesses the cache is unified according to a forwarding ideal, and the processing performance of the network device is improved.

Description

technical field [0001] The present invention relates to the field of network technology, and relates to content caching in an information center network, in particular to a system and method for content caching based on a virtual network interface. Background technique [0002] As we all know, the technology for implementing content caching in the Internet is Content Distribution Network (CDN) technology, which is an overlay network technology on top of Internet Protocol (IP), and is provided by CDN operators. Content cache provided by CDN, including web pages, videos, audios, etc. The use of CDN technology can greatly reduce the load pressure on the source-end service content providing equipment, and achieve the purpose of serving a large number of users with a small amount of equipment. One of the most typical applications of this technology is live video, a CDN for live streams. Under this technology, end users cannot see the existence of the CDN, and they only need to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/861H04L29/08G06F16/9535
CPCG06F16/9535H04L49/90
Inventor 王玲芳王劲林齐卫宁丁力朱晓东
Owner 北京中科海网科技有限公司
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