layer 2 tunneling protocol

Over the past 20 years, network technology has continued to develop, from the initial X.25, frame relay, to Ethernet, FDDI, to the popular ATM, different technologies provide diverse network options. To achieve network interoperability among various types of LAN and WAN, you need to use the network protocol. The network protocol stack used by the Internet not only has low-level

** Application Layer ** data BitTorrent: a popular P2P protocol. DNS: domain name system, an Internet core service that maps domain names to IP addresses. DHCP: Dynamic Host Configuration Protocol, LAN protocol, mainly used: (1) automatically assign IP addresses to internal networks or network service providers. (

0. I do not know the history of HTTP...1. Regarding the email subscribed to by HTTP 2.0, the front page is about the content of HTTP 2.0. I am not very concerned about HTTP, but I will be confused when I am bored. I think there are two major improvements to HTTP 2.0:First, the frame layer is added.The advantage of the frame layer is that the stream information is re-distributed, and the server's processing

computer networks, popular speaking, is that we develop application software, in this layer, for example, QQ, browser access to the Web, and so you see the application software are in this layer, However, these software in the process of operation, also need to rely on some specific protocol to complete the corresponding functions, such as the browser through th

original:http://blog.csdn.net/phunxm/article/details/50860801. The concept and elements of communication protocolIn the OSI Open Interconnect Reference Model, the data units between peer entities (peer) are encapsulated in the sender Layer (encapsulation), and the receiver is parsed (decapsulation) on a per-layer basis. The packets that the sender N-tier entity obtains from the N+1

--Session Layer 4--Transport Layer 3--Network Layer 2--Data Link Layer Physical LayerPhysical mediaThe seven-layer modelThe embodiment under the Windows program:Physical Layer----is the

OSI network layer-7 protocol and its functions OSI is an open reference model for communication between systems. It is a well-defined protocol specification. The OSI model has a layer-7 structure, and each layer can have several child layers. Next I will briefly introduce th

Network TechnologyTo solve this problem. The large L2 network is designed to meet the specific requirement of dynamic migration of virtual machines after Virtualization of servers in the data center. Currently, the layer-2 network technology is complex, suchVxLAN, From HuaweiCSS, iStack, EVN, SVF, CiscoVSS, FEX, H3CIRF. Today we will share with you the implementation principles of VxLAN Technology (from:

responsible for data transfer from PPG (Gateway) to mobile device. Push OTA uses two WSP layer services for connection-oriented sessions (confirmed push) and connectionless session (connectionless push), which requires a pre-existing active session between PPG and the client for push using a connection session. That is, a push that requires the caller to receive acknowledgment information, and for connectionless push, the communication is completed t

using the TCP "Port Number". The network IP address and port number are combined into a unique identifier, we call it "socket" or "endpoint". TCP establishes a connection or virtual circuit between the endpoints for reliable communication [5]. Transport Layer Communication Protocol 2: Analysis of UDP protocol The UDP

HTTP Introduction: http is an application-layer object-oriented protocol. Abstract: HTTP is an object-oriented protocol at the application layer. It is suitable for Distributed hypermedia information systems due to its simple and fast method. It was proposed in 1990 that, after several years of use and development, it

ensured, which also brings about a problem-Layer 2 loop. Therefore, it is necessary to prevent the failure of all data center server access networks from being caused by a layer 2 loop of a remote data center. Technologies for eliminating L2 loops include www.2cto.com l enabling Spanning Tree

Internet is prevalent all over the world. Its basic protocol is Transmission Control Protocol/Internet Protocol (TCP/IP ). TCP/IP is a network communication protocol that regulates all communication devices on the network, especially data exchange and transmission between one host and another. however, at the beginning

main set up a set of automatic receiving and sending information, automatic Network addressing mechanism! Presentation layer :Solve the communication problems between different systems. Application Layer :Specify the data transfer format for your application!HTTP protocol: Hypertext Transfer Protocol!File

Chapter Review:"TCP/IP Detailed Volume 1: Agreement" 1th Chapter Overview-Reading Notes1. IntroductionAs can be seen from figure 1-4, in the TCP/IP protocol family, the link layer has three main purposes:(1) send and receive IP datagram for IP module;(2) send ARP request and receive ARP reply for ARP module.(3) send Rarp request and receive Rarp reply for Rarp.TC

, and seven layers. Layer number layer name OSI level HART level 7. HART command for formatting data at the application layer 6. No data is converted in the presentation layer. 5 Session Layer Control session none 4. Ensure that the information is complete at the Transmissio

IntroductionHTTP is an object-oriented protocol belonging to the application layer, which is suitable for distributed hypermedia information System because of its simple and fast way. It was proposed in 1990, after several years of use and development, has been continuously improved and expanded. Currently used in the WWW is the sixth edition of Http/1.0, http/1.1 standardization work is in progress, and Ht

the details. A more troubling question is how do you keep the 7 layers in order, without missing them? the netizen of the Big brain move opens a lot of memory formula (do not know which you like?) ）：1. All People Seem To Need Data PRocessin G2.PLeaseDoNotTellS tupid PeopleAnything3. Please Do Not Take sAles People ' s advice4. pLease Do Not Throw Sausage PIzza A-To5. PLease Do Not T each Students Pointless C11>acronyms Finally, we show that the top level of the seven

also involves some problems in the field of communication engineering. Network communication protocol layer 2: Data Link Layer Data link layer) is used to transmit data reliably on unreliable physical lines. The data link layer c

Since the 70 's, some of the major foreign computer manufacturers have launched their own network architecture, but they belong to the special. To enable computers from different computer manufacturers to communicate with each other in order to build a computer network in a larger context, it is necessary to establish an international network architecture standard. ISO in 1981 formally recommended a network system structure----Seven-tier reference model, called the Open Systems Interconnection m