virtual circuit service 中文意思是什麼
virtual circuit service
解釋
虛電路服務-
Micro communication element architecture was based on virtual circuit and we did some research work on it. and based on it, we construct the idea of two - time - handshake - virtual - circuit - create and six - time - handshake - virtual - circ uit - free for the first time and analysed it carefully. we came to a conclusion that it ’ s correct and proper for service unit based architecture
在此之上，我們首次提出了採用兩次握手建立虛電路和六次握手撤銷虛電路的虛電路創建和撤銷方式，並對其進行了深入的研究，認為在服務元網路體系結構中採用這種虛電路管理方式是正確而且合適的。 -
Socket function mainly realizes setting up and initializing service unit socket, initializing service unit and service unit serial and so on. bind funcion primarily binds local address and port for the socket. listen function is to evaluate the max length of server ’ s listening queue. connect function and accept function set aside rate ahead, infrom user ’ s request of establishing virtual circuit to suna, cooperate with suna to establish the connection between client and server, return the result. we make use of three handshake with data protocol and virtual circuit mode, in this way, when we translate data, we can look up communication course according to virtual circuit number, at the same time, there aren ’ t source ip address and port, end ip address and port in the head of data package, the speed of translating data advances in a certain extent. send function and recv function is to send data collaborating with suna, and copy data from the receiving queue of socket to user ’ s buffer. close function cooperate
Socket （ ）函數實現創建、初始化服務元套接字，初始化服務元及服務元序列等。 bind （ ）函數為套接字綁定本地地址和埠號。 connect （ ）和accept （ ）函數主要是根據用戶要求預留帶寬，將用戶的建立虛電路請求轉達給服務元網路體系，協作服務元網路體系採用捎帶數據的三次握手協議建立虛電路，並告訴用戶處理結果，一方面，捎帶數據的三次握手協議在一定程度上可提高數據傳輸速度;另一方面，採用虛電路方式，使得數據通信可直接根據虛電路號查找相應的通信進程，而且數據包的包頭中省去了源ip地址、埠號和目的ip地址、埠號，提高了數據傳輸速率。 -
Information technology - international standardized profile ra - relaying the connectionless - mode network service - definition of profile ra51. 1121, relaying the connectionless - mode network service between csma cd lan subnetworks and psdns using virtual calls over a digital data circuit csdn leased line permanent access
信息技術.國際標準華輪廓ra .轉接無連接方式的網路服務.第9部分: ra51 . 1121輪廓的定義.數字數據電路csdn租用的線路固定訪問的虛擬呼叫轉接csma cd lan子網與psdns間的無連接方式的網路服務 -
Service unit network architecture ( suna ) is a kind of network architecture based on service unit. suna is different of hiberarchy, it is concise, extensible and can be easy to be realized. this paper states the virtual circuit architecture prototype host based on suna, expatiates on collectivity design, module patition, the function which all modules provide with and the services for user about prototype host based on suna. the prototype host provides user with two kinds of data flow service, one is dependable data flow service which uses predigested slip window mechanism to guarantee the dependence and sequence of data flow, the other is undependable data flow service. to transfer data in network must pass ui, network communication protocol and physics network. ui is the bridge between the user and network communication protocol
服務元網路體系結構是一種基於服務元的網路體系結構，不同於層次結構，具有簡潔、可擴展和易實現的特點。本文論述了基於服務元網路體系結構的虛電路結構的原型主機，詳細闡述了原型主機的總體設計、模塊劃分、各個模塊實現的功能以及為用戶提供的服務。原型主機為用戶提供兩種數據流服務，一種是可靠的數據流服務，採用滑動窗口機制來保證數據流的可靠性和有序性;一種是不可靠的數據流服務。
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