db25 loopback

configure a vro interface, you must enter the interface configuration mode of the vro. All configurations are only applied to this interface. Each configuration mode has a specific command prompt. EXEC provides a command interpretation service for IOS software. When each command is typed, EXEC will execute this command.Ii. Cisco router configurationWhen we configure a Cisco router for the first time, we need to configure it from the console port. The following describes how to connect to the co

have interfaces. Each Interface has its own name and number. The full name of an interface consists of its type mark and number, which starts from 0. For routers with fixed interfaces (such as Cisco 2500 series) or routers with modular interfaces (such as Cisco 4700 series), only one number is used in the full name of the interface, serial numbers are carried out based on the physical order of the routers. For example, Ethernet0 indicates 1st Ethernet interfaces and Serial1 indicates 2nd serial

from Flash 2. Preparations When designing a router product, the manufacturer reserves a Console. It is an important interface for vro configuration and the first step for password recovery: connect the terminal or PC with the Super Terminal software to the Console port of the vro by using the DB25 forwarding interface and crossover line. The terminal parameter settings are as follows: Speed: 9 600 bps; Data bit: 8; parity bit: none; stop bit: 1; tra

This article describes how to quickly install and maintain a vro from the aspects of control port interface connection, initialization and installation, and troubleshooting and detection of common routing faults. See the detailed description below. A terminal or PC configured with a Cisco router must also use a valid power supply. Cisco synchronous serial interfaces are commonly used. Different interfaces can be obtained through different cables. Many may not know much about the installation and

A router is a commonly used network device. How do we install a router for beginners? How can I maintain a fault? The following article will give you a detailed answer. Installation steps: Step 1: control port connection First, connect one end of the control cable RJ45 in the CISCO2500/1000 series router accessories to the cisco console port, CISO7000/4000 Series routers connect one end of the DB25 of the MODEM cable to the cisco console port, and one

operation ). Hash is performed based on the input password. Check whether the password returned by the data source matches the hash calculation result of the input password. The simple program code is as follows (the content of AccountDao and Hash is not the focus, so it is omitted to save space ): 1 using System; 2 3 public class Validation 4 {5 public bool CheckAuthentication (string id, string password) 6 {7 // get the database, password corresponding to id 8 AccountDao dao = new AccountD

microcomputer (more than 51 parts of the OTP expensive n times, n> 5) One, 40 feet ordinary lock socket one, 30pf Ceramic Capacitor two (I can't find 27pf, but as far as I know, use 10 to 30pf for vibration), a 4 m crystal oscillator, a polyester board, and a DB25 port, single-row and double-row pins (in fact, you don't need to use them). The resistors and LEDs are removed from the broken display. Resistance I do not have 470 Euro, with 100 euro 380

Connection Methods for serial communication: 9-pin/25-pin Basic connection method for Serial Communication Currently, the commonly used serial ports include 9-pin serial ports (DB9) and 25-pin serial ports (DB25). When the communication distance is close ( 2. RS232C Serial Communication Connection method (three-line)First, as long as there are receive data pins and send pins for data transmission through the serial port, the receiving pin and s

Introduction to serial ports The serial port is a common interface for computers. It has a wide range of applications, such as a few connection lines and simple communication. Commonly used serial port is RS-232-C interface (also known as EIA RS-232-C) it was in 1970 by the American Association of Electronic Industry (EIA) the serial communication standard jointly developed by Bell systems, modem manufacturers, and computer terminal manufacturers. Its full name is "Technical Standard for Serial

monitor running mode> or rommon> Boot field = 0x2 boot normal operation mode from flash 2. Preparations When designing a router product, the manufacturer reserves a console, which is an important interface for vro configuration and the first step for password recovery: connect the terminal or PC with the Super Terminal software to the Console port of the vro by using the db25 forwarding interface and crossover line. The terminal parameter settings ar

As the core device of network communication, Cisco routers are widely used. The following is my experience in practice: Control port interface practices and connections Connect one end of the control cable RJ45 in the Cisco2500/1000 series router accessories to the Cisco CONSOLE port, and the Cisco7000/4000 series router connects one end of the DB25 of the MODEM cable to the Cisco CONSOLE port, one end of DB9 is connected to COMl/2 of the PC. Set the

-232, RS-422 and RS-485 standards only to interface electrical characteristics to make provisions, and does not involve connectors, cables or protocols, on this basis, users can establish their own high-level communication protocols. The most frequently used plug-ins we encounter in our actual work have three DB9 DB25 RJ45 plug-ins. The above three plug-ins can be used as serial port plug-ins, you can also switch between sockets through cables. Next w

Introduction to serial programming in Linux-general Linux technology-Linux programming and kernel information. For more information, see below. Introduction: The Linux operating system has provided good support for the serial port from the very beginning. This article briefly introduces the serial port communication programming in Linux. Introduction to serial ports The serial port is a common interface for computers. It has a wide range of applications, such as a few connection lines and sim

defines DB9 and DB25 pairs such as the following table: However, in the actual project development process, the standard serial port application has been fewer and less. Now it is almost impossible to see the serial port on the laptop. Therefore, in the modern embedded development process, the application of USB to UART is more popular. is a typical circuit diagram of the Usb2uart tool. The application of PL2303 is indeed very extensive. To

Microsoft Windows family still uses VGA display mode, which also explains its importance and compatibility in the display standard. VGA display and VGA timing implementation: The Universal VGA display card system consists of three parts: control circuit, display buffer and video BIOS (basic Input output System) program. D-sub Interface: Commonly known as VGA (video Graphics Adapter) interface. D-sub is the abbreviation of d-subminiature, it is a standard of interface shape and structure, it

1. OSPF features Fast convergence;Able to adapt to large networks;Able to correctly process error routing information;The use area can reduce the CPU burden on a single router and form a structured network;Supports classless routing, full support for classless network, variable length subnet, and other classless features;Supports Load Balancing across multiple paths;Multicast addresses are used for information intercommunication, reducing the load of non-OSPF routers;Use routing labels to repre

Debian network configuration file-Debian information for the Linux release-the following is a detailed description. When debian is installed, the network configuration file/etc/network/interfaces is like this: # This file describes the network interfaces available on your system # And how to activate them. For more information, see interfaces (5 ). # The loopback network interface Auto lo Iface lo inet loopback