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Distributed Ethernet switch and internal MAC address maintaining method thereof

A MAC address and Ethernet technology, applied in the field of media access control address learning and aging, can solve the problems of complex processing logic, heavy burden of inter-board communication, waste of bandwidth, etc., and achieve the goal of simplifying processing logic and reducing the burden of inter-board communication Effect

Active Publication Date: 2009-07-22
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Each line card independently ages its own SYNC type MAC address, which will cause complex message processing logic
In addition, each line card needs to notify other line cards of all its SELF-type MAC entries at a certain period, which not only wastes bandwidth, but also complicates the processing logic.
[0009] To sum up, the current methods for implementing MAC address maintenance in distributed Ethernet switches, including the "common learning, centralized aging" type and the "common learning, common aging" type, are difficult to implement and the burden of inter-board communication is too heavy , and dealing with logically complex problems

Method used

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  • Distributed Ethernet switch and internal MAC address maintaining method thereof
  • Distributed Ethernet switch and internal MAC address maintaining method thereof
  • Distributed Ethernet switch and internal MAC address maintaining method thereof

Examples

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Embodiment Construction

[0044] The technical solutions of the present invention will be further elaborated below in conjunction with the accompanying drawings and specific embodiments.

[0045] Such as figure 1 As shown, the distributed Ethernet switch applicable to the MAC address maintenance method of the present invention needs to possess the following characteristics:

[0046] a. The distributed Ethernet switch contains N (N ≥ 1) line cards and 1 main control card;

[0047] b. Each line card contains multiple switching ports, for example: port 1, port 2, port 3, port 4, port 5 and port 6; between the line card and the main control card, and between the line cards through interconnection ports (such as port 0) for communication, and the line card supports local switching and cross-card switching of data packets;

[0048] c. A MAC forwarding table is maintained on each line card and the main control card.

[0049] by the invention figure 1 The MAC address maintenance method that the shown distr...

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Abstract

The invention discloses a distributed type medium access control (MAC) address maintenance method inside of Ethernet switch, the method comprises following steps: when a certain line card receives a data packet from an switching port, according to the MAC address learned from the data packet, the MAC forwarding list of the line card is updated according to the MAC address learned from the data packet, and the learning information of the MAC address is notified to the main control card and other line cards; when the line card receives the data packet from the interconnecting port, the learning of the MAC address can not performed; the line card performs aging process for the MAC address learned from the switching port in the oneself MAC forwarding list, and notifies the aging information of the MAC address to the main control card and other line cards, the aging process of each MAC forwarding list can be performed according to the aging information of the MAC address. The invention also discloses a distributed Ethernet switch capable of conveniently implementing the MAC address maintenance inside of the distributed Ethernet switch, the communication between boards can be reduced, and the processing logic can be simplified.

Description

technical field [0001] The invention relates to the learning and aging technology of medium access control (MAC) addresses in a distributed Ethernet switch, in particular to a distributed Ethernet switch and its internal MAC address maintenance method. Background technique [0002] The Ethernet switch is a multi-port networking device working on the second layer (data link layer) of Open System Interconnection (OSI, Open System Interconnection). The data packet enters from a port of the Ethernet switch, and the Ethernet switch obtains the outgoing port of the data packet based on the destination Media Access Control (MAC, MediaAccessControl) address in the data packet and the MAC forwarding table maintained internally, and then forwards the data packet from The outgoing port is forwarded. The MAC forwarding table maintained inside the Ethernet switch is the core component of the Ethernet switch to realize data packet forwarding. The MAC forwarding table is established by au...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/02H04L12/56H04L12/947
Inventor 张丙晨
Owner ZTE CORP
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