cisco serial port

Use the virtual serial port to add a pair of serial port COM2 and COM3 on the host.In the virtual machine to add a virtual serial port, you can choose COM2 or COM3, this pair of default is interoperability.Modify the Isolinux/isol

data transmission. Asynchronous mode means that data can be directly sent without a clock line during data transmission. For example, we often say that serial ports adopt asynchronous methods. There is no clock signal line between the sender and receiver. They use their own clock. After understanding synchronization and Asynchronization, continue to look at UART. We can think of it as a thing integrated into the microprocessor, which consists of two

RS232 serial Communication Interface: When the communication distance is close (Definition of 9 foot pin:CDC data carrier detection, RXD receive data, TXD send data, DTR data interrupt preparation, GND signal ground, DSR data device ready, RTS request sent, CTS clear send, Dell ringing indication.View serial port information under LinuxCheck whether the

http://blog.csdn.net/david_xtd/article/details/24542595 The use of SMS modem in Linux to send text messages, because the SMS modem uses USB Serial converter (chip for PL2303), the process and methods in the configuration and debugging in this record, want to have the same needs of colleagues to provide a little help."One", driving related instructions:If you use the serial

PyserialIntroducedThe serial communication module is encapsulated to support both Jython (Java) and Iconpython (. NET and Mono) for Linux, Windows, BSD (which may support all POSIX-enabled operating systems).Home http://pyserial.sf.net/CharacteristicsAll platforms use the same class interfacePort number default starting from 0, the program does not need to know the ports nameApi,read, write (ReadLine, and so on) are also supported as file reads and wr

Cisco port monitoring monitor session SW1 (config) # monitor session 1 source interface f0/0 // define the monitored port SW1 (config) # monitor session 1 destination interface f0/12 // connect to the analysis tool's port (PC Packet capture) www.2cto.com SW1 # show monitor session 1 // view monitoring Session 1 session

The core switch is an all-optical fiber switch of beidian. On one of the floors, some applications need to be implemented. cisco 3560 is selected, and Port 1 is connected to the network cable transferred from the photoelectric converter, however, if the first port is normal for about 2 seconds, it turns yellow and network communication is interrupted. If you conn

First, give an environment:Cisco router Intranet interface s1/0: 192.168.1.1 255.255.255.0Internet interface s1/1: 10.0.0.1 255.255.255.0Server ip Address: 192.168.1.100First telnet to the vrotelnet:User Access Verification Username: cisco # enter the user namePassword: # enter the PasswordRouter> en # Enter privileged ModePassword: # enter the privileged mode PasswordRouter # conf t # enter global configuration modeEnter configuration commands, one p

Based on the protocol encapsulation of the serial port through commconnection, the mechanism of synchronization is adopted. The general process is as follows:Sending commands --- reading and responding to data cyclically; this operation is very simple. When there are a large number of interactions or the state machine is used, the Code is a large loop and a small loop, and the structure is not good, I want

First, install the serial port tool setserial.Command: sudo apt-GetInstall setserial, Using setserialTool to view the serial port information, $Sudo setserial/dev/ttys0-/Dev/ttys0,Line 0, UART: Unknown, Port: 0x03f8, IRQ: 4Baud_base

Ti official website download stellarisware package, decompress by default path, in c: \ stellarisware has multiple folders, where C: \ stellarisware \ board \ rdk-s2e folder is the main character: source code for serial port to Ethernet. It uses lwip1.3.2 as the TCP/IP protocol stack. TI's serial port to Ethernet modul

Linux under the serial port programming articles online is flying, but mostly from an article, and write are some basic operations, such as control rts/cts, such as serial pin state, receive send binary data and so on, there is no good explanation, I encountered some problems in use, write out, I hope to For everyone to help, less detours, hehe. The operating sys

This weekArticle Asynchronous Implementation of serial port operationsSome problems have been found during serial port applications such as RFID, bar code, and printing in the project: 1. Clear useless data in the serial port be

Send serial data: Using system;Using system. Collections. Generic;Using system. LINQ;Using system. text;Using system. Io. ports; Namespace senddata{Class Program{Static void main (string [] ARGs){SerialPort Port = new SerialPort (); Console. writeline ("Serial Port (such as COM1 ):");

Redirect grub output to the serial port Edit/boot/GRUB/grub. conf and add the following line. Bit Rate 115200 data bit 8-bit no-parity bit stop bit is 1 Serial -- unit = 0 -- speed = 115200 -- word = 8 -- parity = No -- stop = 1 Terminal -- timeout = 5 console serial During GRUB boot, the output is sent to the term

It took almost a week to learn drivers. During this period, I was busy learning Linux application programming, search driver, and kernel-related books for further study. In the previously friendly driver routines, the knowledge involved is very limited. It is imperative to study more driver source code and learn more about driver knowledge. While studying other people's code, you must also do it yourself. The following is a serial

IntroductionThe serial port is a very common protocol for device communication (not to be confused with the Universal Serial Bus Universal Serial Bus (USB)). Most computers contain two RS232-based serial ports. Serial

We all know that the port of the switch is more, when you want to see some port status (is in the up or down state), we usually use the following command:Cisco: Show Interface XH3c:display Interface XNote: The X-form port number, such as E1/0/1.But if the port of the switch is very long, and you want to know the status

Ciscoportfast This is for the access port, a normal switching interface from down to up to pass: Down,listening,learning,fowarding Several states, total time is 30 seconds, This determines whether this port is blocking or fowarding and is also a mechanism for the switch to prevent loops. However, for direct access to such terminal equipment interface is not necessary to go through these steps, that is, from

This note contains two aspects: 1. Only control the LED light off and no value is returned. 2. Control the LED light off and return a value. After reading a few videos, we are talking about the serial port method 1. Other functions are not available yet. Here we only use serial port method 1 to implement these two func