How to capture VLAN tags

We may need to capture vlan tags during troubleshooting, the configuration method is summarized as follows. Switch side configuration Cisco switches can use Switched Port Analyzer (SPAN) to capture packets, and we need to...

Cisco Option 43 Generator

Option 43 can be used to discover WLC or convert EWC/ME to CAPWAP. This is a really useful feature, and I often need to use it in my tests. But its format conversion is...

Initially configure an ISR 1100 router

Ports Connect the GigabitEthernet port to the upstream switch. Configure the wireless interface, the configuration is the same as the GigabitEthernet port. We may also need to configure the default route. After configuration, it...

Microsoft Playwright Automation Tool

Playwright is a browser automation tool released by the Microsoft team. Another popular tool similar to it is Selenium. Playwright has a significant advantage in recording and generating code. Installation Generate code We can...

Get started with Quasar

Installing Quasar with npm. Create Quasar project folder. Start the Quasar Project. We may encounter the following errors. Use the -p parameter to change to other port.

8 Useful Tips & Tricks for SecureCRT

SecureCRT is powerful, high-usability terminal emulator. I found some useful tips & tricks when using SecureCRT, which are summarized below. Copy & Paste When using terminal window, we often need to copy & paste...

How to use Crontab on Ubuntu server

Crontab is a command used to execute tasks regularly in Linux/Unix operating systems. It is very suitable for repetitive tasks. I am using Ubuntu 20.04 LTS, but the crontab commands in most linux distributions...

Install FTP Server vsFTPd On Ubuntu

vsFTPd is a lightweight FTP server. After installation, we can use filezilla to upload or download files. Installation Configuration We may encounter “550 permission denied” error, which impossible to upload files. Then restart vsftpd...

Initial Configuration for Embedded Wireless Controller

Product overview Official explanation The Cisco® Embedded Wireless Controller (EWC) on Catalyst® Access Points is a software-based controller integrated into Cisco Catalyst 9100 Access Points. It is a simplified, low-cost, feature-rich Wi-Fi architecture with...

Getting Started with Vuetify

Installation Install Vue.js Creat a new Vue.js project using Vue CLI Add the Vuetify package Check Vue.js and Vuetify version Edit vue.config.js, configure as relative path Start development server Build for production References Vuetify...