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Daily update. 2019-10-11 12:06:31

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gnu4cn 2019-10-11 12:06:31 +08:00
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@ -189,7 +189,7 @@ RouterA#debug frame-relay lmi
帧中继支持可对服务质量Quality of Service, QoS施加影响的标记。比如帧中继头部就包含了一个丢弃资质为a DE(Discard Eligible) bit。对于QoS的帧中继环境数据包可籍由丢弃资质位加以标记而这就告诉服务提供商那些特定数据包不是非常重要在壅塞时可被丢弃。这样做将令到那些没有设置丢弃资质位的数据包优先。
在帧中继环境中可配置其它参数就是向前显式壅塞通知与向后显式壅塞通知Forward Explicit Congestion Notifications(FECNs) and Backward Explicit Congestion Notifications(BECNs)这通常会是一个突如其来的考试问题which commonly crops up as an exam question。帧中继设备在配置了FECNs或BECNs时就可通知壅塞设备并可造成发送速率的下降The Frame Relay equipment, if configured to do so, can notify devices of congestion and can cause the slowing down of the sending rates
在帧中继环境中可配置其它参数就是向前显式壅塞通知与向后显式壅塞通知Forward Explicit Congestion Notifications(FECNs) and Backward Explicit Congestion Notifications(BECNs)这通常会是一个突如其来的考试问题which commonly crops up as an exam question。帧中继设备在配置了FECNs或BECNs时就可通知壅塞设备并可导致发送速率的下降The Frame Relay equipment, if configured to do so, can notify devices of congestion and can cause the slowing down of the sending rates
## 配置帧中继Configuring Frame Relay