Difference between revisions of "Packet switch"
(A start..) |
(Overall operation) |
||
| Line 1: | Line 1: | ||
| − | A '''packet switch''' is a switching node in a data transmission network using [[packet]]s (as opposed to [[circuit switching]]). | + | A '''packet switch''' is a switching node in a data transmission network using [[packet]]s (as opposed to [[circuit switching]]). They are connected to a number of network links in the overall network, and take packets in from one network interface, and send them out on another, as the packets move from the source [[host]] to the destination. |
| − | The first packet switches were [[minicomputer]]s provided with [[serial line]] interfaces (since [[synchronous]] serial lines the only data transmission technology available for the first packet data networks), such as the [[Interface Message Processor]s of the [[ARPANET]]. | + | The first packet switches were [[minicomputer]]s provided with [[serial line]] interfaces (since [[synchronous]] serial lines the only data transmission technology available for the first packet data networks), such as the [[Interface Message Processor]]s of the [[ARPANET]]. |
The early generations of [[router]]s, used in the first decades of the [[Internet]], were similar, but could use interfaces to the various [[local area network]] technologies (e.g. [[Ethernet]]). | The early generations of [[router]]s, used in the first decades of the [[Internet]], were similar, but could use interfaces to the various [[local area network]] technologies (e.g. [[Ethernet]]). | ||
Revision as of 23:50, 18 April 2018
A packet switch is a switching node in a data transmission network using packets (as opposed to circuit switching). They are connected to a number of network links in the overall network, and take packets in from one network interface, and send them out on another, as the packets move from the source host to the destination.
The first packet switches were minicomputers provided with serial line interfaces (since synchronous serial lines the only data transmission technology available for the first packet data networks), such as the Interface Message Processors of the ARPANET.
The early generations of routers, used in the first decades of the Internet, were similar, but could use interfaces to the various local area network technologies (e.g. Ethernet).
More recently, very high speed packet switches use custom hardware.
