什么是“优秀”？框架？
What is meant by outstanding frame ?
I read this term while studying GBN protocol .
From wikipedia:
frames since the first lost frame are outstanding, and
will go back to sequence number
如果你对这篇内容有疑问，欢迎到本站社区发帖提问 参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。
绑定邮箱获取回复消息
由于您还没有绑定你的真实邮箱，如果其他用户或者作者回复了您的评论，将不能在第一时间通知您！
发布评论
评论（4）
我认为这里的“优秀”意味着 - 仍在等待确认。
所有成功的帧均已成功传递，并且接收方为它们发送了确认，但它没有收到丢失的帧并忽略后续帧，因此这些帧仍然未完成
I think outstanding here means - still waiting for acknowledgement.
All the successful frames were passed successfully and the reciever sent an acknowledgement for them, but it didn't recieve the lost frame and ignore the following frames, so these frames are still outstanding
未完成的帧是那些源从窗口内发送并且尚未收到确认的帧。
假设窗口大小为 4，则源将一次发送 4 个数据包，这些数据包未得到确认且仍在窗口内，因此这些是未完成的帧。
在您的情况下，此行意味着如果源发送的第一帧丢失或未得到确认，那么它将再次从开始处发送这些未完成的帧，因为目的地尚未按顺序收到帧。
The outstanding frames are those frames which the source had sent from inside the window and their acknowledgement has not yet come.
Suppose The window size is 4 then source will send 4 packets at a time and these packets are not been acknowledged and are still inside the window so these are the outstanding frames.
In your case this line means that if the first frame sent by the source is lost or does not get an acknowledgement then It would send those outstanding frames again form the start because destination hasnt recieved the frames in sequence.
来自 Windows 安全 百科全书
From Windows Security Encyclopedia
在计算机网络中用于可靠数据传输的Go-Back-N（GBN）协议中，“未完成的数据包”是指发送方已发送但尚未得到接收方确认的数据包。这些数据包仍在网络中“传输”。
In the Go-Back-N (GBN) protocol, which is used for reliable data transmission in computer networks, an "outstanding packet" refers to a data packet that has been sent by the sender but has not yet been acknowledged by the receiver. These packets are still "in flight" within the network.