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- Q719775 subject Q7415251.
- Q719775 abstract "A ring network is a network topology in which each node connects to exactly two other nodes, forming a single continuous pathway for signals through each node - a ring. Data travel from node to node, with each node along the way handling every packet.Rings can be unidirectional, with all traffic travelling either clockwise or anticlockwise around the ring, or bidirectional (as in SONET/SDH). Because a unidirectional ring topology provides only one pathway between any two nodes, unidirectional ring networks may be disrupted by the failure of a single link. A node failure or cable break might isolate every node attached to the ring. In response, some ring networks add a "counter-rotating ring" (C-Ring) to form a redundant topology: in the event of a break, data are wrapped back onto the complementary ring before reaching the end of the cable, maintaining a path to every node along the resulting C-Ring. Such "dual ring" networks include Spatial Reuse Protocol, Fiber Distributed Data Interface (FDDI), and Resilient Packet Ring. 802.5 networks - also known as IBM token ring networks - avoid the weakness of a ring topology altogether: they actually use a star topology at the physical layer and a media access unit (MAU) to imitate a ring at the datalink layer.Some SONET/SDH rings have two sets of bidirectional links between nodes. This allows maintenance or failures at multiple points of the ring usually without loss of the primary traffic on the outer ring by switching the traffic onto the inner ring past the failure points.".
- Q719775 thumbnail NetworkTopology-Ring.png?width=300.
- Q719775 wikiPageWikiLink Q1417083.
- Q719775 wikiPageWikiLink Q145490.
- Q719775 wikiPageWikiLink Q181382.
- Q719775 wikiPageWikiLink Q207971.
- Q719775 wikiPageWikiLink Q2145723.
- Q719775 wikiPageWikiLink Q7415251.
- Q719775 wikiPageWikiLink Q748329.
- Q719775 wikiPageWikiLink Q7574044.
- Q719775 type Thing.
- Q719775 comment "A ring network is a network topology in which each node connects to exactly two other nodes, forming a single continuous pathway for signals through each node - a ring. Data travel from node to node, with each node along the way handling every packet.Rings can be unidirectional, with all traffic travelling either clockwise or anticlockwise around the ring, or bidirectional (as in SONET/SDH).".
- Q719775 label "Ring network".
- Q719775 seeAlso Q7334734.
- Q719775 depiction NetworkTopology-Ring.png.