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Tag: Network

Wireless Tether for Android rooted phone

My home broadband connection is down. Luckily, I have HTC HD2 with me. I can do Wi-Fi and USB tethering in Windows Mobile. But some of the Android ROMs cannot do both. So here is an Android application that can help those who like me ~ Wireless Tether for Root Users. It enables tethering via Wi-Fi or Bluetooth. I did not try on Bluetooth mode but I am a happy user with Internet connection through Wi-Fi.

Wireless Tether for Root Users

Set ‘WCDMA only’ with Android Network Application by Philipp Mangelow

I don’t have a strong 3G signal at my place. And it used to turn to 2G EDGE when 3G signal is weak. Data connection is broken then and slow with EDGE connection. Network application by Philipp Mangelow manages to help to set ‘WCDMA only’ on certain Android ROMs with EVO kernel where I cannot set ‘WCDMA only’ in connection settings.

Network by Philipp Mangelow

Wired Tether for Android (rooted phone)

My home broadband connection, Streamyx is having issue again. It keeps disconnecting and connecting (DSL is not connected issue). So it is time for me to use my HTC HD2 as modem again. But I don’t want to use wireless connection this time, but going to try Wired Tether for Root Users. It is the same as Wireless Tether for Root Users but using USB cable instead of Wi-Fi connection. It is good for single user usage and can charge your phone at the same time.

Wired Tether for Root Users

Solve intermittent network connection issue – ping request timed out

There are 2 networks in my lab environment. 1 test network and 1 general IT network connection. Test network is used for communication between test server, PQIUHC and UUT – for all the testing purpose. Test network is an isolated network. On the other hand, general IT network is used to connect to all other networks such as Internet, other lab or factory network. Test server has 2 NIC (1 connect to test network and 1 connect to general IT network)

My customer reported he failed to connect to test server from his UUT. Network failed intermittently. The simple way to test network connection is using command prompt to test it. Key in ‘ping -t testserver‘ (replace testserver with your IP) in command prompt. In normal condition, you will get ‘Reply from testserver: bytes=32 time=1ms TTL=125‘. Else you will get ‘Request timed out‘ if the server network is totally out of service. However, sometime you get reply from it and sometime don’t. This is what we call intermittent network issue.

There are many factor that can cause this issue to happen. Hardware might the one that causing the problem but very less percentage unless your hardware is very old. Another one is caused by software. Finally, human’s mistake. Most of the time, it is caused by ourselves.

For this case, it is caused by human error. Somehow, there is cable from general IT switch link go to test network switch. Therefore, whenever PQIUHC or UUT want to talk to test server. They will face problem to connect to test server due to there are 2 routes (test network and general IT network). So intermittent network issue will happen. Only 1 route is allowed in this case. All we need to do is unplug the cable between these 2 switches and everything back to normal again… 🙂

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