tier 1 ip network

of packets over the entire network.There are three main protocols in this layer: Internet Protocol (IP), Network Group Management Protocol (IGMP), Internet Control Message Protocol (ICMP) Transport Layer: corresponding transport layerThe end-to-end communication function is provided for the application layer entities, which ensures the sequential transmission of the packets and the integrity of the data.Th

and protocols of this layer, do not care about the specific physical transmission medium is.So how exactly does the physical layer block these differences, and what does it include?the RS232 interface standard is the content of the physical layer. In addition there are RS-449, x.21, v.35, ISDN, and FDDI, IEEE802.3,IEEE802.4, and IEEE802.5. (1) Mechanical propertiesIndicates the shape and size of the connector used for the interface, number of leads a

The controls you needFirst of all to have Tdsservermodule, Tdsserver, Tdstcpservertransport;Tdsserverclass, Tdatamodule; The main controls to implement the above functions are as shown inThe included units include SysUtils, Classes, DSTCPServerTransport, DSHTTPCommon, DSHTTP, DSServer, DSCommonServer, Provider, IdBaseComponent, IdComponent, IdTCPConnection, IdTCPClient;Where the idtcpconnection unit must have.The code is as follows,//the symbol contains the main implementation part; Pr

To mount NFS, the first step is to enable the virtual machine to bridge the Internet. You do not need to check the box below the bridge Internet. The IP address and Host IP address must be configured in the same network segment. Record the following steps: I. I initially referred: 1), # ifconfig eth0 up (Note: After th

TCP/IP Note 2. Network Layer (1) -- IP, subnet, CIDR1. IP1.1 supporting agreementIP is one of the two most important protocols in the TCP/IP system.There are also four protocols used in combination with the IP protocol:(

port number with a unique identity on the network can be combined to form a uniquely identifiable identifier socket. socket principle mechanism:? There are sockets on both ends of the communication. ? network communication is actually the communication between sockets. ? data is transmitted via IO between two sockets. UDP Transport Datagramsocket and Datagrampacket establish the sending end, t

One day, when I was restricted by many secular rules and could not do what many normal people could do, I suddenly felt: people should not have come to this world! Since we fell into the ground, we have been destined to suffer a lot in our life... There is always no proper balance between breaking rules and conforming rules. I will still choose to stick to the rules when I think that fox, the female killer in the movie "Assassin's League" (also known as the wanted order), will eventually end the

When planning IP addresses, we already know that IP addresses include public and private IP addresses, at present, enterprises mainly provide one or several Class C addresses provided by ISPs, while private IP addresses include A, B, and C, in addition, it is the 169.254.0.0 -- 169.254.255.255) CIDR block address reser

Network Communication is inseparable from the TCP/IP protocol. In a TCP/IP network, each computer must configure the necessary network to communicate and access resources on the network, some major parameters, such as

1. Network Tools: ifconfig, ping, netstate, Redhat command and graphical settings of ip, finger, nslookup, ifconfignetstateZookeeper 1 ip ad view Nic ID 2. View Nic information in ifconfig 3. Disable the NIC 4. Start the NIC 5. configure a temporary

1.Linux Configuring IP Address　　Ifconfig command temporarily configures IP addressIfconfig command, the most common function is to view the local network configuration status (of course, can also configure the network, but temporarily), directly enter the Ifconfig command ca

First, Course notes:1. Command changes:View NetworkIP Add (7.x)Ifconfig (6.x)Yum install-y net-tools using the ifconfig command after 7Restart ServiceSystemctl Restart Network.service (7.x)Service Network restart (6.x)2. NIC configuration file changes/etc/sysconfig/network-scripts/ifcfg-enxx/ethxxIfcfg-enxx (7.x)Ifcfg-ethxx (6.x)Second, the experimentConfigure I

This article only cares about Python's network programming and focuses on TCP/IP units.First, a simple understanding of the following:1, what is TCP/IP,UDP?TCP/IP (transmission Control protocol/internet Protocol) is a protocol/inter-netw