| Author |
Circuit vs Packet Switching
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| TortGuy 2004-02-06, 9:22 pm |
| What are the differences between circuit and packet switching - other than packet switching being more affordable? | |
| smrkdown 2004-02-06, 10:49 pm |
| A circuit switched connection provides a dedicated connection or pathway for data to flow. A connection is set up and maintained until communication is done and then the connection is torn down. Packet switched networks break up streams of data into packets allowing more than once device to share the available bandwidth. Circuit switching provides a higher guarantee of delivery but makes inefficient use of the available communication medium. | |
| TortGuy 2004-02-07, 1:13 am |
| So is one a SVC (Switched Virtual Circuit) and the other a PVC (Permanent Virtual Circuit)?
I've been reading at http://www.cisco.com/univercd/cc/td...oc/introwan.htm today and in some ways I like the material, but in another way it doesn't seem in depth enough.
Any study guide recommendations appreciated. | |
| dmaftei 2004-02-07, 3:11 pm |
| Both SVC and PVC are circuit switched. The difference between them is that PVCs are established once, by convention between you and your provider, then are up an on all the time. It's pretty much like having your own wire between your sites, for good.
SVCs are established on demand: when you need the connection your provider establishes the circuit, then you send your data, and when you're done the provider tears down the circuit.
With packet switching no circuit is established. Each packet finds its way to its destination all by itself. |
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