计算机论文摘要翻译 急啊 帮帮忙啊

Summary:Nowadays 21 centuries are the information ages that a networks are cores, under the condition that condition allow next, more profession, personal start set foot in the network correspondence.The network technique also changes with each passing day in this kind of trend of develop.But, also exactly this kind of unprecedented prosperity, but bring, the network resources burden becomes to gather the product to aggravate.To know, the network resources is limited, but the need is infinite.Also exactly and thus, the network resources acceleration consume, starting the condition of appear the supply falls short of demand.But, the need of information world to the network resources that fly to develop soon but only ability is there is 増 did not reduce.Hence, the technical personnel hopes and can find out a kind of new technique method, solve the influence of the increasingly dried up network resources upon the information world and thus satisfy the mankind's increasingly multifarious network need.

So the son net divides the line the technique is very important, it alleviated the depletion of the network resources effectively, making the network resources get the reasonable allotment.A little bit say in brief:While diding not divide the line the son net technique, the Internet traditional resources allotment way is compare an IP address is divided into the network number( net- id) and the host number( host- id), and join 5 categories of 1~ in the part network especially, compare through a category especially is divided into address of IP A, B, C, D, the E five, but these biggest differentiations are again in the by volume dissimilarity, and the host dissimilarity accept.

But this kind of traditional allotment method, have a lot of irregularities.Among them included the above-mentioned network resources to consume to quickly wait the very tough problem.

In this kind of case, pass to divide the line the son net technique and can resolve the above-mentioned problem.Its thought is:Is in the whole piece of space of IP that you get, pass the son net 掩 code to divide the line a son net again, thus, the same can satisfy the correspondence need of each section.At the same time, the son net and the network addresses combine together, not only can combine the host that locates the different physics position together, also can pass to separate the key equipments or excellent turn the safe function of the measure exaltation network of etc. of the data transmission, lower the network discharge.Thus, can with reasonable and use of economy network resources.Can say, divide the line the son net technique is mankind in the information technique, the heroic act of the milestone type.

The network technique develops till today, the plait address method of the address of IP has already experienced three important history stages.These three stages is:

(1) Classified address of IP.This is the most basic plait address method, passing the homologous standard in 1981.This is also the most traditional IP plait address method.

(2) The demarcation of the son net.This is the improvement to the most basic plait address method, its standard[950] of RFC passes in 1985.

(3) Constitute the super net.This is newer without the type classification plait address method.After put forward in 1993 very quickly have to arrive the expansion application.

In this text, we will pass the detailed introduction of this main line, dividing the line the son net technique to the function that network produce, and divide the line the technical and concrete contents of the son net.