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Extensible multicast forwarding method and device for data center (DC)

A data center and forwarding equipment technology, applied in the field of scalable multicast forwarding solutions, can solve the problem of uncontrollable address continuity and achieve good scalability, simple design, and scalability

Inactive Publication Date: 2013-03-13
NEC (CHINA) CO LTD
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Problems solved by technology

Therefore, the routing and forwarding mechanism for multicast on the Internet has to deal with a range of 200 million addresses, and the continuity of addresses is uncontrollable

Method used

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  • Extensible multicast forwarding method and device for data center (DC)
  • Extensible multicast forwarding method and device for data center (DC)
  • Extensible multicast forwarding method and device for data center (DC)

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Embodiment Construction

[0042] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, and unnecessary details and functions for the present invention will be omitted during the description to avoid confusing the understanding of the present invention.

[0043] According to the previous introduction, the biggest difference from the Internet is that in the data center network, the number of multicast addresses depends on the number of servers, while the number of servers in the current large-scale data center ranges from 10,000 to 100,000 and is concentrated in About 50,000, therefore, a continuous multicast address segment (for example, 239.0.*.* / 16 has a total of 65,536 addresses) is sufficient to meet the demand for multicast in the current data center network. According to this feature, the present invention proposes to use the IP addresses in the continuous IP address segment to represent the multicast address of the server ...

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Abstract

The invention provides an extensible multicast forwarding method and a device for a DC. According to the method and the device, the multicast address of the server in the DC is expressed by the address in a continuous multicast address field. The method includes receiving an input multicast data packet and extracting a destination MAC address from the head of the input multicast data packet; performing logic and operation on the extracted destination MAC address and a scheduled mask to obtain an index value and achieve a routing inquiry engine function; determining an output port sequence through the obtained index value to achieve a forwarding engine function; and finally, dispatching a line card through a switching matrix to achieve the multicast forwarding of the input multicast data packet, namely, outputting the input multicast data packet from the port indicated by the determined the output port sequence. The device and the method have the advantages of being simple in design and extensible.

Description

technical field [0001] The present invention relates to a data center, and more particularly relates to a scalable multicast forwarding scheme for a data center. Background technique [0002] With the development of applications such as the Internet and cloud computing services, the scale of the data center is increasing day by day, and the number of machines included in the data center is also increasing (ten thousand units level). Compared with the Internet, the data communication between servers in the data center has a high-density concentration and a relatively regular network hierarchy topology, so the network architecture in the data center has become a current research hotspot. [0003] More and more applications (such as online video) and the needs of the data center itself (such as data backup, etc.) use the multicast function. Compared with one-to-one unicast routing, multicast routing is mainly applied to one-to-many services, that is, a multicast source provide...

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Application Information

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IPC IPC(8): H04L12/18H04L12/761H04L45/16
Inventor 夏勇祝铭
Owner NEC (CHINA) CO LTD
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