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| Newer page: | version 3 | Last edited on Tuesday, March 9, 2004 6:34:10 pm | by SamuelFalvo | Revert |
| Older page: | version 2 | Last edited on Tuesday, March 9, 2004 6:24:06 pm | by SamuelFalvo | Revert |
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-DAMA is a whole family of multiple-access methods for computer networks. The basic premise is you have a central ''master'' node to which a number of ''slave'' nodes connect to to use the network. The master dictates who can transmit and, optionally, for how long.
+DAMA is a whole family of multiple-access methods for computer networks. The basic premise is you have a central ''master'' node to which a number of ''slave'' nodes connect to to use the network. The master dictates who can transmit and, optionally, for how long. Therefore, there is guaranteed to be (ideally) no collisions anywhere on the network. (In practice, connection requests can collide when used on a bus-topology network. Still, even in this case, the collision rate will be substantially less than a pure [CSMA/CD] network.)
Note that TokenRing is a kind of DAMA, as is IEEE-488 and all of its variations. USB is also relies on a kind of DAMA (while FireWire is ''not'').
A node can be a DAMA master on one channel, and a slave on another. Indeed, amateur radio Digipeaters (AX.25 digital repeaters) are often configured this way.
