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OSPF (Open Shortest Path First) is an Internal Gateway Protocol (IGP) used in a single autonomous system () decision routing. The link is another form of router interface. Therefore, OSPF is also known as the interface status routing protocol. OSPF

What is the difference between the point-to-point WEB program and the HTTP protocol when transmitting data? Today, I saw such an interview on the Internet, which triggered a series of online knowledge searches and reviews ...... As we all know, http

TCP is a connection-oriented, reliable, and byte-stream-based Transport layer communication protocol. In the simplified computer network OSI model, it completes the functions specified by the layer-4 transport layer. TCP (Transmission Control

Fast Ethernet is a new type of LAN. Its name is "Fast", which means that the exponential data rate can reach 100 Mbps, 10 times the data rate of standard Ethernet. It includes two technologies: 100BASE-T and 100VG-AnyLAN. 100BASE-T 100BASE-T is

1. The link layer is also called the data link layer or network interface layer. It usually includes the device driver in the operating system and the network interface card corresponding to the computer. They work together with the physical

Analysis of TCP/IP Model 1. TCP/IP Protocol Introduction TCP/IP (also known as TCP/IP protocol cluster) is a group of communication protocols used to achieve network interconnection, the name is derived from two important protocols (IP protocol and

Asypolicric Digital Subscriber Line (Asymmetric Digital user loop) is a new data transmission method. It is called because of asymmetry between upstream and downstream bandwidth. It uses the frequency division multiplexing technology to divide

TCP is a connection-oriented transmission protocol. TCP has four features:1. End-to-End 2. connection-oriented 3. Reliable and ordered data streams 4. batch data transmission now, let's talk one by one. 1. End-to-end. "End" refers to "Port ". The

Basic information: a building with six floors in total, each of which requires a network and a wireless network. The topology is roughly as follows. S58 is the core switch, and the access switch uses the S36 sequence. AC is actually an S58

Comparison of ospf, Ospf, and rip: Comparison of ospf and rip: Limitations of RIP arising from the use of large networks: 15 hop restrictions of RIP, A route with more than 15 hops is considered inaccessible to RIP and cannot support a variable long

Some Understandings and practices of TCP protocol1. The introduction references the introduction in "TCP/IP explanation-Volume 1". TCP and UDP use the same network layer (IP layer ), TCP provides a completely different service to the application

Next-generation protocols related to IPv6 are in the TCP/IP protocol set. Protocols that are directly active and indirectly interoperable with IP addresses include various application layer protocols, connection protocols, and TCP and UDP. This

Overview of CSMA/CA protocol analysis the MAC protocol 802.11 of the wireless LAN standard is very similar to the MAC protocol 802.3 standard. In the 802.3 protocol, the MAC protocol uses a mechanism called CSMA/CD (Carrier Sense Multiple

NAT traversal and NAT penetration 1. NAT traversal is divided into two categories: Symmetric NAT and stricter restrictions on 5-tuples (source port, IP address, destination port IP address, and Protocol, NAT is symmetric for a large part of

Data communication and network notes-error control protocol at the data link layerThe following describes three protocols for error control. 1. the Stop-and-Wait ARQ protocol is used to Stop the process of waiting for an automatic recurring request.

ICMP Packet AnalysisI. Overview:1. ICMP allows the host or route to report errors and provide relevant exceptions. ICMP is a standard protocol for the Internet, but ICMP is not a high-level protocol, but an IP layer protocol. Generally, ICMP packets

TCP/IP-02-link layer Chapter 2 link layer 2nd introduction in the TCP/IP protocol family, the link layer has three main purposes: 1) sending and receiving IP datagram for the IP module; 2) sends ARP requests to the ARP module and receives ARP

What are SMTP and POP3 commands? SMTP (Simple Mail Transfer Protocol): the transmission Protocol used to transmit an email from a client to a server or from one server to another. SMTP is a request/response protocol. commands and responses are based

The IPV6 extended packet header is followed by the eight basic fields of the IPv6 packet header, which is the extended header and data part. The extension header is not fixed. If it exists, the extension header and data are followed by eight basic

Everything about err-disabled status 1. the role of the err-disabled status: normally, if the switch is running normally, one of the ports is enabled. however, if the software of the switch (cisco ios/CatOS) detects some port errors, the port will