cisco serial port

1, first explain the 74ls164 shift chip:74hc164, 74hct164 is a 8-bit edge-triggered shift register, serial input data, and then output in parallel.Data is entered serially through one of two inputs (DSA or DSB), and either input can be used as a high-level enable to control data input from another input. Two inputs either connected together, or the unused inputs terminated high, must not be suspended.Each time the clock (CP) is changed from low to hig

You can configure a serial interface through a virtual terminal. to configure a serial interface, follow these steps: 1. In Global mode, enter the command "interface serial 0" to enter the serial interface configuration mode. 2. Each connected serial interface must have an I

For enterprise users, multi-device port access control can optimize the network more reasonably. Here we analyze in detail how to configure a Cisco router to implement this function. You only need a CISCO router with an asynchronous module or a router with a built-in asynchronous serial

Obtain the COM port number mapped to the serial port Background: Recently, due to project requirements, you need to operate the SMS cat. After the SMS cat is inserted into the computer, it will map the COM port based on the current PC status. Here, you need to dynamically obtain the COM

function in C performs further initialization, such as the NIC, and then enters the main_loop loop. The relocated U-boot memory layout is as follows: Now execute make all to compile the u-boot.bin and u-boot-spl.bin, but compilation error: In clock. the s5pv210_get_arm-clk of C uses the macro samsung_get_base_clock and the related registers, because our clock code was previously implemented using assembly, so we have the arch-s5pc1xx in arch/ARM/include/ASM/clock. h to define these registers:

Introduction to Cisco Port Channel)Port trunking is used to bind multiple low-bandwidth ports of a vswitch to a high-bandwidth link to achieve load balancing. Avoid link congestion. Through configuration, You can bind two or four ports to forward data on specific ports to prevent packet loss when the forwarding rate of a single link is too low. Advantages of Trun

CISCO PT Simulation Experiment (2) port configuration and management for switchesExperimental Purpose : Master the basic configuration and management of the switch, and understand the basic commands of the switch configuration.Experimental background : A company has a new batch of two-layer switch, before formally put into use to initialize the configuration and management, in order to maintain later.Techni

Cisco port status: CSU ── channel server unit, DSU ── data server, unit, DTE ── DataTerminalEquipment 1. Serial * is down, line protocol is down (DTE) faults: [1] No power is added to the vro. [2] LINE is not connected to CSU/DSU. [3] hardware error. Solution: [1] Check power supply. [2] Check whether the cables and serial