diff --git a/LDP/guide/docbook/Linux-Networking/Topologies-and-Architectures.xml b/LDP/guide/docbook/Linux-Networking/Topologies-and-Architectures.xml index 68536ffc..418565d5 100644 --- a/LDP/guide/docbook/Linux-Networking/Topologies-and-Architectures.xml +++ b/LDP/guide/docbook/Linux-Networking/Topologies-and-Architectures.xml @@ -1,6 +1,6 @@ - + -LAN-Topologies-and-Architectures +Topologies-and-Architectures A network's topology is the configuration, or shape, of the wiring used in @@ -17,8 +17,6 @@ communication (star, bus, ring), and architecture refers to standards (Ethernet, Token Ring, ARCnet). -Network Topologies - Different types of LANs are wired in different ways. The nodes might be connected to each other, to a central hub, or to a continuous cable (bus). @@ -33,8 +31,11 @@ topologies. For example, Token Ring networks use a physical star topology and a logical ring topology. -Bus + +Bus + + In a bus topology, a single cable supports an entire network segment. This cable is the bus, sometimes called a backbone. Nodes are attached at various @@ -61,8 +62,11 @@ bus will bring the network down. Also, the coaxial cable used in these networks is generally harder to work with than twisted pair cable. -Star + +Star + + In a star topology, each node is connected with its own cable to a central device node called a hub. The hub internally connects each node to the @@ -84,8 +88,11 @@ the added expense of hubs. They are also easier to expand, since a new node can be wired to the hub without disconnecting other nodes. -Ring + +Ring + + In a ring topology, the nodes are connected to each other to form a circle. Each node receives signals from its upstream neighbour, and passes them on to @@ -108,8 +115,11 @@ entire network. Ring networks can also be more difficult to troubleshoot and expand. -Mesh + +Mesh + + A mesh topology provides fault tolerance through redundant links. In this system, each node is connected to every other node with seperate cables. Thus, @@ -131,8 +141,11 @@ each network transmission. This allows redundant links to provide increased efficiency as well as relability. -Hybrid + +Hybrid + + A hybrid topolgy is any combination of the above topologies. One common hybrid technology is a star bus, in which several star-wired networks segments are @@ -154,4 +167,8 @@ while three of four critical servers are wired in a mesh. This adds reliablity to complex networks. + + + +