是否可以同时传输基本环形拓扑?
是否可以使用基本环形拓扑同时传输? 在基本环形拓扑中,我可以拥有多个令牌吗? 如果我有多个令牌,Active Monitor 是否会删除令牌? 你能提供一些有用的链接吗?
Is it possible to simultaneously transmit with a basic ring topology?
In a basic ring topology can I have more than one token?
Is Active Monitor will remove tokens if I have more then one?
Can you give some useful link about it?
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好吧,这取决于我们谈论的是哪种戒指。如果环能够使用多个波长,例如 MultiTokenRing,则每个波长可以有一个令牌,因此多个节点可以同时传输数据。
对于一个简单的环,我认为维基百科有一个明确的答案:
Well it depends on what kind of ring we are talking about. If the ring is able to use multiple wavelengths, such as a MultiTokenRing, then it can have one token per wavelength, and thus multiple nodes can transmit data at the same time.
For a simple ring, I think Wikipedia has a clear answer:
有两种方法:
1) 单令牌方法
捕获令牌后,源会发送一个“繁忙令牌”及其数据。仅当源接收回忙碌令牌后,该令牌才会作为“空闲令牌”释放回来。
2)多token方法
免费令牌附加在数据末尾。一次可以有多个忙碌令牌,但只有一个空闲令牌
参考
图片来源、引用和解释:
新开发的电信服务
Nobuyoshi Terashima,《智能通信系统》,2002 年,7.6.5 令牌环协议
https://www.sciencedirect.com/topics/computer-science/token-戒指
IEEE标准802.5
此外,本文提出了一个系统,其中我理解为同时提供多个免费令牌。如果您愿意,可以看一下:
R. Cohen 和 A. Segall,“单个高速环中的多个逻辑令牌环”,载于 IEEE Transactions on Communications,第 1 卷。 42、没有。 234,第 1712-1721 页,1994 年 2 月/3 月/4 月,doi:10.1109/TCOMM.1994.582879。
https://ieeexplore.ieee.org/document/582879
There are two methods:
1) Single-token method
After capturing the token, the source sends a "busy token" followed by its data. The token is released back as a "free token" only after the busy token is received back by the source.
2) Multi-token method
The free token is attached at the end of the data. At one time, there can be multiple busy tokens but only a single free token
References
Image source, citation and explanation:
Newly Developed Telecommunication Services
Nobuyoshi Terashima, in Intelligent Communication Systems, 2002, 7.6.5 Token Ring Protocol
https://www.sciencedirect.com/topics/computer-science/token-ring
IEEE standard 802.5
Also, this paper proposed a system with what I understood as multiple free tokens at once. You can take a look at it if you like:
R. Cohen and A. Segall, "Multiple logical token-rings in a single high-speed ring," in IEEE Transactions on Communications, vol. 42, no. 234, pp. 1712-1721, FEBRUARY/MARCH/APRIL 1994, doi: 10.1109/TCOMM.1994.582879.
https://ieeexplore.ieee.org/document/582879