How to configure asynchronous private line using three cables

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问题描述

Q: How to configure asynchronous private line using three cables?

A: Symptom: Eight asynchronous ports of two 2511 routers are used in a military area to configure the asynchronous private line. Without an asynchronous private line Modem, two asynchronous ports are connected directly through cables. The user can provide three cables only, for transmitting the receiving, sending and ground signals. As a result, the line protocol is down.

    Cause: All the eight signals should be used for the asynchronous private line by default. When there are only receiving, sending and ground signals, the line protocol is down.

    Analysis: Use the Flowcontrol..normal command to screen CTS and RTS signals (relevant to flow control), and use the no..detect dtr-dsr command to screen DCD, DTR and DSR signals. When the two commands are used, the line protocol is up.

 

案例信息

案例类型:FAQ
案例号:KMS - 12760
创建时间:2007年9月26日
更新时间:2007年11月1日
发布时间:2007/11/1 3:48:17
文章密级:游客可见
有效期:长期有效
发布者:冷志宇 [l05092]
点击次数:329
评论平均得分:0
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产品线:中低端路由器
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