Chart 2 OBS network analysis situs structure drawing

The control grouping contains exports the address, the bias time, the data arise suddenly information and so on size and QoS,

ahead of time corresponding arise suddenly the data grouping to it to transmit in the separation control wave 646-058 length, it

corresponds arise suddenly the data grouping to pass through the bias time heel which assigns along with the control grouping

transmission. These control groupings transforms the electrical signal in the middle pitch point to carry on processing.

In the core pitch point, the band width reserves the time for arise suddenly the data the transmission the duration. The core

unit must monitor the current capacity the 646-058 basic essential factor, including blocks the probability, the detention and the

process time and so on, these information decisions in entrance pitch point light way. In the exportation pitch point, the

data arise suddenly is opened the frame, and analyzes Cheng Duoge the IP package. If the need, must carry on in the

exportation pitch point arranges again and makes a mistake reissues processing. But the bias time, arise suddenly parameter

and so on size and QoS value, is essential 646-058 essential factor which the OBS network must process, these must carry on the

evaluation in the OBS network entrance pitch point.

OBS application

The OBS technology is for satisfy the service to grow needs to grow, it young has the time delay (unidirectionally to

reserve), the band width use factor high, the exchange nimble, the data transparent, the exchange capacity is big

(electrically controlled light exchange) and so on the 646-058 merit, may achieve the Tb/s level the exchange capacity. Therefore,

the OBS network mainly applies to the large-scale city territory net and WAN which unceasingly develops. It may support the

traditional service, like telephone, SDH, IP, FDDI and ATM and so on, also will be allowed to support the future to have a

higher burst characteristics and the multiple service, like data file transmission, homepage browsing, video on demand, video

frequency conference and so on.

Regarding the large-scale city territory net, or many 646-058 universities, the large-scale office, the plot, business unit, each

suburban counties or the satellite town, as well as the densely populated public place and so on, lays aside a OBS edge

router, completes the local many kinds of services the convergance, the production arise suddenly. It turns on the service to

be allowed to be many and varied, like ethernet (10M, 100M, 1G or 10G), ATM, xDSL and so on. Again lays aside some OBS core

router in each main place, completes reserving which the 646-058 light suddenly groups with exchange. Thus, constructed a metropolis

OBS net.

Although OBS is not mature in the standard and the agreement aspect in, has very many technologies also further to study, OBS

still was one kind extremely has the future the light exchange technology, it unified the light electric circuit exchange and

the light grouping exchange superiority, simultaneously has 646-058 avoided their shortcoming. The OBS characteristic is the control

and the data separates in the time and the space, the control grouping transmits ahead of time, and in the middle pitch point

after the electricity information processing, reserves the resources for the data grouping; But data grouping after control

grouping transmits, through reserves the good resources in the middle pitch point to go nonstop to, does not need

light/electricity/light processing; Uses unidirectionally 646-058 reserves the mechanism, the band width use factor high, and does

not need the light buffer, the realization is relatively easy. Along with the fast wave length transformation technology

maturity, the light arise suddenly the exchange 646-058 technology to obtain the rapid development, will become the next generation

optical transmission and the exchange network core technology.