Arise suddenly the exchange technology the development and theapplication

The Internet unceasingly grows strong with each kind of emergingservice appearance, like each kind of multimedia homepage, themultimedia game, the multimedia conference, the electronic commerceand so on, cause the internet service to assume the exponentialgrowth. As a result of the service multiplicity and the polytropy, thetraditional core exchange network already was ill to the Internetunceasing need to develop. This kind of situation urges theresearchers to speed up the beat resonance to divide turns round with(WDM) transmits and the entire light exchange technology thoroughresearch, in order to adapts the Internet current capacity detonationtype to grow, the service multiplicity and the service burstcharacteristics.
At present the light Cisco 646-228 network uses the static state or the dynamic wavelength route (or said light electric circuit exchange, OCS) mechanism,agreement mechanism relatively simple, technology mature, is easy torealize. But it is similar to the electric circuit exchange mechanism,establishes and demolishes a channel to need the certain time, andthis time the maintenance time which connects with it has nothing todo with, but mainly decided makes the time to the end-to-end letter.When connection maintenance time quite short-time, it will cause thechannel the use factor to change the difference. Therefore, it ill isin harmony with continues to grow also the constantly changingInternet current capacity, like homepage browsing, FTP file transfer,email and so on.