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An apparatus for implementing disaster recovery of 10G Ethernet port

An Ethernet and port technology, which is used in data exchange networks, data exchange through path configuration, digital transmission systems, etc., and can solve problems such as system disasters and long failure recovery times.

Inactive Publication Date: 2007-11-14
ZTE CORP
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0004] (2) It only works in full-duplex mode;
The above occasions require that the 10G Ethernet port can work reliably and stably for a long time. Once the port and link fail, it will cause catastrophic consequences to the system.
[0009] Traditional Ethernet uses STP (Spanning Tree Protocol) to recover from faults in the network. The disadvantage of this method is that the fault recovery time is long, and the reconstruction of STP takes up to ten seconds.
This is unacceptable in telecom networks

Method used

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  • An apparatus for implementing disaster recovery of 10G Ethernet port
  • An apparatus for implementing disaster recovery of 10G Ethernet port
  • An apparatus for implementing disaster recovery of 10G Ethernet port

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Embodiment Construction

[0039] The working principle of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0040] As shown in Figure 1, the standard of 10G Ethernet only involves the lowest two layers of the ISO seven-layer reference model: the physical layer and the data link layer. This part is realized by hardware circuit, and the interface between each sublayer is XGMII interface and XAUI interface. The present invention mainly relates to the contents of these two layers.

[0041] The 10G Ethernet architecture and interface definitions are shown in Figure 1. 1) XGMII (10G Ethernet Media Independent Interface) is the interface between the PCS layer (physical coding sublayer) and the MAC layer, and the sending and receiving directions are each 32 bits wide Parallel data bus with a data rate of 312.5Mbps per bit, plus control lines and clock lines, a total of 74 signal lines. 2) XAUI (10G Ethernet Additional Unit Interface) is an extens...

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Abstract

The invention relates to a device for realizing disaster recovery for Ethernet port. The 10G Ethernet MAC chip is connected with XGMII interface through XAUI SERDES chip; the XAUI SERDES chip is connected with two 10 GE optical modules through XAUI interface to form two 10G Ethernet links of master and backup ports; the XAUI SERDES chip realizes the switching between XGMII interface and two XAUI interface signals each; the auto switching logic module monitors working states of the links; the alarm logic module sends an alarm signal to the CPU after the switching occurs between the master and backup ports. As one link fails, it can real-timely switch data flow to the other link, where the switching time is determined the hardware circuit speed, therefore it can avoid the phenomenon of large number of lost packets. Its recovery time is largely better than that of traditional Ethernet failure recovering method.

Description

technical field [0001] The invention relates to a device for realizing disaster recovery of Ethernet ports, in particular, a device for realizing disaster recovery of 10G Ethernet ports through hardware circuits and logic devices. technical background [0002] As a huge upgrade of the traditional Ethernet technology, 10G Ethernet increases the transmission rate by 10 times on the basis of the original Gigabit Ethernet. It breaks the limitation that traditional Ethernet can only be applied to LAN, and extends Ethernet to MAN and WAN. 10G Ethernet technology is a high-speed Ethernet technology, but it is still Ethernet, which uses IEEE802.3 Ethernet MAC (Media Access Control) protocol, frame format and frame length. 10G Ethernet differs from previous Ethernet standards in the following points: [0003] (1) It will only use optical fiber media for transmission; [0004] (2) It only works in full-duplex mode; [0005] (3) The WAN interface sublayer WIS is specially added for...

Claims

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Application Information

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IPC IPC(8): H04L12/24H04L12/28H04L12/26
Inventor 宋国栋吴捷
Owner ZTE CORP
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