Year: 2021

If you forget the Console port login password, you can set a new Console port login password in either of the following two ways:   Resetting the password when Telnet login is available: Log in to the switch through STelnet/Telnet to set a new Console port login password This method requires that you have an STelnet/Telnet account with administrator rights. The command lines and command output below use the case of logging in to the device through STelnet to change

Installation Requirements: CentOS/RHEL/Fedora/Debian/Ubuntu/Raspbian/Deepin/Aliyun/Amazon/Mint Linux distributions At least 5GB of free disk space; at least 9GB free for MySQL 5.7 or MariaDB 10 At least 128MB of RAM (for 128MB low-memory VPS: Xen requires SWAP; OpenVZ requires at least 128MB of vSWAP or burstable memory). Note: do not use a 64-bit system on low-memory machines! Installing MySQL 5.6 or 5.7, or MariaDB 10 requires at least 1GB of RAM; higher versions require at least 2GB of RAM!. Installing PHP 7 or

Firewall (firewalld) Temporarily stop the firewall systemctl stop firewalld Disable the firewall at startup systemctl disable firewalld Temporarily start the firewall systemctl start firewalld Enable the firewall at startup systemctl enable firewalld Check the firewall status systemctl status firewalld END SELinux 1 Temporarily disable SELinux enforcement setenforce 0 2 Temporarily enable SELinux enforcement setenforce 1 3 Disable SELinux at startup Edit the /etc/selinux/config file and set SELINUX to disabled, as shown below. SELinux will be disabled on the next boot. 4

How to Install the General Availability Release of Win11 On October 5, 2021, Microsoft released Windows 11 to general availability, bringing a host of new features; Windows 10 users who meet the hardware requirements can now upgrade. Win11 Why the upgrade matters and what’s new in the system Support for Android apps is coming, and is expected to arrive within a few months An all-new UI and sound design make the system more modern, cleaner, and more attractive, with a

Purpose This article describes the concepts, limitations, and some configuration examples (specifically for Cisco and HP) of link aggregation, NIC teaming, Link Aggregation Control Protocol (LACP), and EtherChannel connections between ESXi/ESX and physical network switches. Resolution Note: Many requirements must be considered before implementing any form of link aggregation. For detailed and related information about these requirements, see Host requirements for link aggregation for ESXi and ESX (1001938). Link aggregation concepts: EtherChannel: This is a link aggregation (port trunking) method

NTP (Network Time Protocol) is an Internet protocol that precisely synchronizes computer clocks on a network with a time source. It can keep the difference between the local clock and a reference clock within 1 millisecond. The NTP server address provided by the Fudan University Network Center is: ntp.fudan.edu.cn . Client Setup Instructions: Windows XP Double-click the clock in the lower-right corner of the taskbar -> Select Internet Time -> Enter “ntp.fudan.edu.cn” as the server address. Windows 2000 　　1. Go to

  1. Communication Media and Data Links: The unit of transmission rate is bps (Bits Per Second). Strictly speaking, the speed at which signals travel through any transmission medium is constant. Therefore, even if data links have different transmission rates, the transmission speed will not fluctuate (because the speed of light and electric current is constant). Transmission rate is also called bandwidth. The greater the bandwidth, the stronger the network’s transmission capability. In addition, the actual transmission rate between hosts

Introduction When learning networking, hands-on labs are unavoidable — yet most people don’t have real hardware and can’t build a real environment. Fortunately, the networking field offers a wealth of simulators that can faithfully emulate more than 90% of functionality, achieving a level of realism that is hard to distinguish from the real thing. This is good news for network learners. Below we introduce the simulators most commonly used by network engineers. Cisco or Huawei? Before we begin, let’s answer