IS420ESWBH4A  IONet交换机包

【功能描述】

IS420ESWBH4A是通用电气公司用于Mark VIe/VIeS系统的ESWB IONet交换机包的第四个版本。该版本的ESWB包具有一个带有lc型连接的100Base-LX10单模光纤端口。作为单模光纤端口包，它需要一个额外的红外SFP，来自GE的单模换能器。这个包的一个关键特征是它能够暂停流量控制，流量控制在交换机之间使用，并使用IEEE接收和尊重发送到包的暂停数据包;请注意，只有当其中一个端口需要流量控制时，才会发送暂停包。

这个包要求高性能和高可靠性。为了实现这一目标，IS420ESWBH4A包将在95度左右的环境温度下超过400万小时的MTBF或平均故障间隔时间，并将在固定的地面控制环境中运行。在高可靠性运行时，还需要特定的性能标准，这些标准是浪涌电流、开关延迟和开关架构。浪涌电流用于提供软启动，当软启动发生时，电流将被限制在小于标准工作电流的百分之二百。

在工作过程中，IS420ESWBH4A封装将使用led来指示多种不同的功能。除电源功能外，背包上仅有活动功能和链接功能，链接功能有三个标准;链路LED的标准为10mb的链路为黄色，100mb的链路为绿色，如果LED不亮则表示未检测到链路。对于活动LED，只有两个选项，闪烁黄色表示该活动以半双工方式执行，闪烁绿色表示该活动以全双工方式执行。

IS420ESWBH4A  IONet交换机包

IS420ESWBH4A Technical Specifications

Product Description

The IS420ESWBH4A is the fourth version of the ESWB IONet Switch pack from General Electric for the Mark VIe/VIeS system. This version of the ESWB pack has one 100Base-LX10 single-mode fiber port with an LC-type connection. As a single-mode fiber port pack, it requires an additional IR SFP, single-mode transducer from GE. One key feature of this pack is its ability to pause flow control, the flow control is used between switches and uses IEEE to receive and honor the pause packets sent to the pack; please note that the pause packet will only be sent if flow control is required on one of the ports. 

This pack requires high performance as well as high reliability. To achieve this the IS420ESWBH4A pack will exceed up to four million hours MTBF or Mean Time Between Failures at around ninety-five degrees of ambient temperature and will operate on a fixed ground controlled environment. There are also specific performance criteria needed when operating at high reliability, these criteria are, inrush current, switch latency, and switch architecture. The inrush current is used to provide a soft start, when a soft start occurs then the current will be limited to less than two hundred percent of the standard operating current. 

During operation, the IS420ESWBH4A pack will use LEDs to indicate multiple different functions. Activity and Link functions are the only functions on the pack besides power, the link function has three standards; standards for the link LED are solid yellow for a 10 MB link, solid green for a 100 MB link, and if the LED is not lit then a link has not been detected. For the activity LED, there are only two options, flashing yellow indicates that the activity is performing at half duplex, and when flashing green the activity is performing at full duplex. 

IS420ESWBH4A  IONet交换机包

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