How to change the DSCP value in IP header
If you need to validate your QoS configuration, this article may be helpful to you. I will discuss here how to change the DSCP value in the simplest way, including Linux and Windows systems....
Category: Tools
Using WifiInfoView to let Windows clients connect to a specific BSSID
Recently I was troubleshooting a wireless problem. The symptom is that the client cannot connect to a certain radio interface. However, in the test, because the client often selects other radio interfaces, the symptom...
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...
Use Visual Studio Code Remote-SSH Plugin for Remote Development
I have multiple remote Ubuntu servers for running Python scripts. Before that, I had two choices, using SSH to login remotely for development, or copying file to the remote servers after local development. But...
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...
Configure keepalives to prevent putty automatically disconnecting
I often need to open multiple putty sessions. When I need to use it again after a while, sometimes putty has been automatically disconnected. This has troubled me for a long time, and now...
ax-udl: Cisco Wireless Syntax Highlight Rules for Notepad++
Notepad++ is often used in my work, mainly for analyzing logs. If I can mark some important content in advance, it will greatly improve my work efficiency. So I started the ax-udl project, which...
Tips for saving teraterm logs
In the previous article I shared how to save putty logs, this time I will share how to save Tera Term logs automatically. Setup – Additional settings Set directory and file name For the...
Tips for saving putty logs
Admittedly, putty is a good tool. I often need to copy the putty logs to a txt file for analysis. I would like to share here two tips for using putty. Let putty output...
Configure color theme for putty
For network engineers, you may use putty every day at work. Some people who are willing to share have made the putty color theme, and we only need to download it to easily configure...
How to Decrypt WPA packet with Wireshark
When troubleshooting wireless issues, we often need to analyze OTA packets. The annoying thing is that most of these packets are encrypted, and we can’t see the contents inside. Fortunately, we can use Wireshark...
How to configure Kiwi Syslog Server for Cisco WLC
Solarwinds Kiwi Syslog Server is a widely used commercial Syslog server. Kiwi Syslog Server Free Edition can monitor Syslog for up to 5 devices. We can download Kiwi Syslog Server Free Edition from the...
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