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Irmoore is abs. correct. I just want to add more that<br />
the ring can help you through two kinds of protection,<br />
1 on a bi-directional ring and 1 in uni-directional ring.<br />
Bellcore (Telcordia) is a good source of BLSR standard,<br />
but I am not sure if they provide the document freely or<br />
not. 
</div>


Irmoore is abs. correct. I just want to add more that
the ring can help you through two kinds of protection,
1 on a bi-directional ring and 1 in uni-directional ring.
Bellcore (Telcordia) is a good source of BLSR standard,
but I am not sure if they provide the document freely or
not.

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<div class="content wysiwyg-content">
I am looking for support for why optical ring topology for MAN is better than star topology. &nbsp;Or viceversa. It seems some people associate ethernet with Star, but carriers use rings? I can't find any information why? And does anybody know who is adopting MAN rings? <br />
<br />
I'm especially hoping to find articles and statistics that support/explain these sorts of things. The only papers I find are on Mesh verses Ring topology, no mention of star anywhere? But perhaps I've been looking and looking in all the wrong places? Please help.<br />
<br />
Cheers.<br />

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I am looking for support for why optical ring topology for MAN is better than star topology.  Or viceversa. It seems some people associate ethernet with Star, but carriers use rings? I can't find any information why? And does anybody know who is adopting MAN rings? 

I'm especially hoping to find articles and statistics that support/explain these sorts of things. The only papers I find are on Mesh verses Ring topology, no mention of star anywhere? But perhaps I've been looking and looking in all the wrong places? Please help.

Cheers.


Why Ring topology &amp; not Star in optical ethernet MAN?

Networking is the process of connecting computing devices, peripherals and terminals together through a system that uses wiring, cabling or radio waves that enable their users to communicate, share information and interact over distances. Often associated are issues regarding operating systems, hardware and equipment, cloud and virtual networking, protocols, architecture, storage and management.

Networking

A switch is a device that filters and forwards packets of data between LAN segments. Switches operate at the data link layer or the network layer of the Open Systems Interconnection (OSI) Reference Model and therefore support any packet protocol. LANs that use switches to join segments are called switched LANs or, in the case of Ethernet networks, switched Ethernet LANs. A hub is a connection point for devices in a network. Hubs are commonly used to connect segments of a LAN. A hub contains multiple ports; when a packet arrives at one port, it is copied to the other ports so that all segments of the LAN can see all packets.

Why Ring topology &amp; not Star in optical ethernet MAN?

Why Ring topology & not Star in optical ethernet MAN?