dte dce

Configuration # Conf t# Int s0# Ip addr ABCD XXXX# Encap frante_relay# No nrzi_encodingNRZI = NO.# Frame_relay lmi_type q933a // here, the "Q933A" standard is selected for the lmi_type. There are three types of LMS (Local management Interface): ANSI T1.617, CCITT Q933A, and Cisco-specific standards.# Frame-relay intf-typ A/B/C // A/B/C is the frame relay device type. They are DTE devices, DCE switches, and

); interface is artificially disabled: Ethernet 0 is administratively down, line protocol is down (you can remove the shutdown command under interface_mode in the configuration file ). In addition, when we suspect that the port has a physical fault, the shown version is available, and the port with physical faults is not displayed. 2. Identify serial port faults When the communication with remote communication is interrupted, we should isolate the fault in the following order: from the line to t

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

-compress Cisco ppp configuration 2: CHAP authentication configuration for PPP Method 1 R1: (primary authenticated party) hostnamer1 usernamer2passyhp ints0/0 ipadd192.200.10.1255.255.255.0 encapsulationppp pppauthenticationchap noshutdown R2: (authenticated party) hostnamer2 usernamer1passyhp ints0/0 ipadd192.200.10.2255.255.255.0 encapsulationppp pppauthenticationchap noshutdown Method 2 R1: (primary authenticated party) hostnamer1 us

"Experiment Name"PPP PAP Certification"Experimental Purpose"Mastering the process and configuration of PPP PAP certification"Background description"You are the company's network administrator, the company in order to meet the growing business needs, the application of a dedicated line access, your customerThe client router authenticates with the ISP when it negotiates the link, configures the router to ensure that the link is established, and considers its securityOf"Demand Analysis"Security val

data. Typical protocol representatives: RPC, SQL, NFS, NetBIOS, SCP, ASP, SSH, Winsock, BSD sockets presentation Layer (Presentation) : Transforms the upper data or information to ensure that one host application layer information can be understood by another host's application. The data transformation of the presentation layer includes data encryption, compression, format conversion, and so on. Typical protocol representatives: TIFF, GIF, JPEG, PICT, ASCII, EBCDIC, encryption, MPEG, MIDI, HT

Shenzhen customer sim6320c module off-line analysis report1 Problem Descriptionsim6320c module on the wince+ Beijing Telecom 3G card device , dial-up Internet, idle minutes, dial-up automatic disconnection problem. but with Shenzhen and Shanghai Telecom 3G card will not automatically disconnect. 2 Cause AnalysisDetailed Analysis log is as follows:(1) PPP dial succeeds, gets to IP 10.32.42.195:Where the first 13:57:19.4 module (DTE) initiates a dial-

control signals. As ISDN directly provides digital channels between end-to-end, it features high speed, high quality, high reliability, and fast call connection, and can transmit data, voice, and image information. Broad network protocol: X.25 Technology X.25 has been the interface standard between the user network and the group switching network for many years. It is an interface between a data terminal device and a data circuit terminal device that operates in groups on a public data network.

The basic way of the user's common data communication can be divided into parallel communication and serial communication.Parallel communication refers to the use of multiple data transmission lines to transmit a single data. Characterized by fast transmission speed, suitable for short-distance communication, but requires high transmission speed of applications.Serial communication refers to the sequential transmission of a single bit of data using a transmission line. The characteristic is the

　　In the process of dialing with the wireless router will always encounter this problem, perhaps you do not know how to solve, here for everyone to list the possible problems and solutions! 　　[problem] when the user uses the Quidway router connection, the wide-area network PPP protocol does not pass, and the problem is judged. 　　[resolution]: PPP agreement is ISO Two layer protocol, so the problem is to judge from the first level, with show in S N (n for the used serial port) to see if the und

This article describes in detail how to configure PPP authentication and CHAP authentication, and provides the command line for configuration. You can learn about the configuration process through the instance. When configuring PPP verification, select PAP and CHAP. PAP is the user name and password for the plain text transfer, which is not secure. CHAP uses hash values for verification. Passwords are not transmitted online, so the security is high. CHAP certification is also the basic configura

IP address is configured with two different x121 addresses, this will cause a conflict. [Problem] when a user uses a QUIDWAY router to connect to a wide area network port, the PPP protocol fails and the problem is determined. [Solution]: The PPP protocol belongs to the second-layer ISO protocol. Therefore, the problem must be determined from the first layer. Use show in s N as the serial port used.) view the underlying DTR, DSR, RTS, whether the CTS and DCD signals are all UP. If not, it indica

Manual Summary of vrouters and vpcsRequired DevicesThe following are the required devices for this lab:1) Two Cisco routers with one serial port;2) Cisco IOS 10.0 or later;4) a pc that runs the terminal simulation program;5) a Cisco DTE/DCE crossover cable;6) a Cisco flat cable is used to access the Console port of the router.3.3.1. Purpose of the experimentThese configurations will verify the use of the ma

header-compress Cisco ppp configuration 2: CHAP authentication configuration for PPP Method 1 R1: (primary authenticated party) hostnamer1 usernamer2passyhp ints0/0 ipadd192.200.10.1255.255.255.0 encapsulationppp pppauthenticationchap noshutdown R2: (authenticated party) hostnamer2 usernamer1passyhp ints0/0 ipadd192.200.10.2255.255.255.0 encapsulationppp pppauthenticationchap noshutdown Method 2 R1: (primary authenticated party) hostnamer

SpeakerVolume: off GettyArgs: "-h % l dx _ % s" # LocalIdentifier: "Your Company" (uncomment if wanted on the fax) # TagLineFont: etc/lutRS18.pcf (idem) # TagLineFormat: "De % l | % c | Page % p sur % t" (idem) # MaxRecvPages: 25 ModemType: Class2.0 # use class 2.0 interface ModemRate: 57600 #38400 DCE-DTE communication rate ModemFlowControl: rtscts # XON/XOFF flow control assumed ModemDialCmd: ATDT0 % s #

, the following uses the Cisco 26 series router as an example, this section describes how to quickly restore the IOS operating system of a vroios. You can find a PC and the corresponding cable. Of course, the PC should have the corresponding fttp software and the IOS image file you need. But before you begin to recover IOS, you should pay attention to the following issues: when connecting a PC running tftp server to a vro, you must use the first Ethernet port of the IOS operating system of the

three optional service types for remote access: leased line connection, circuit switching, and packet switching. This exampleUse asynchronous dialing connection.6.1 configure physical lines, including the speed between DTE and DCE), number of Stop bits, and traffic control.Method, the protocol type of the incoming call connection, and the direction of the permitted traffic.R (config) # line 97R (config-lin

Clock Configuration 650) this. width = 650; "src =" http://www.bkjia.com/uploads/allimg/131227/0454301F6-0.png "title =" 1.png"/> 1. Configure vroa A (assuming vroa A is the DCE end of the serial line) Router> en Router # conf t Router (config) # host Router Routeconfig # int s0/0 Routeconfig-if # ipad 192.168.1.1255.255.255.0 Roupid (config-if) # clock rate 64000 Routeconfig-if # noshutdown Roupid (config-if) # exit 2. Configure vrob B (assuming vrob

transmitted to the user in the form of optical fiber, then, the optical terminal is converted into a pair of coaxial (BNC). If the wide-area port of the user's router is in the serial port format (for example, V.35), in order to convert the BNC to the serial port, the Protocol converter is required. That is to say, the input of the Protocol converter is a coaxial cable, while the output is a serial port. Therefore, it should be a physical layer protocol ｡ In addition, the Protocol converter ge

determines whether to forward the packet by judging whether the destination address and source address are in the same network segment, generally, a small office network device has only two interfaces, one connecting to the Internet and the other connecting to a LAN Hub or switch. Therefore, it is generally set to a default route, as long as it is not an intranet segment, all Forwarding is performed ｡ In the Wan project, the Protocol converter is a telecommunications terminal device used at bot