Solved

Enable/Disable NIC to simulate network issue

Posted on 2011-09-20
4
756 Views
Last Modified: 2012-05-12
I trying to simulate network failure using Java. For one of the scenarios, once an application server starts and listens to an IP, I would like to simulate a failure by disabling the NIC. Once the test is done, I need to ensure the NIC is enabled.

Any pointers or sample code ?
0
Comment
Question by:ctoan
  • 3
4 Comments
 
LVL 47

Expert Comment

by:for_yan
ID: 36571237
What kind of sample code you expect for such testing?
0
 
LVL 1

Author Comment

by:ctoan
ID: 36571247
Sorry, I should have mentioned, this will be automated testing. So I am looking for sample code to disable the NIC and then re-enable it.
0
 
LVL 47

Accepted Solution

by:
for_yan earned 500 total points
ID: 36571251
0
 
LVL 47

Expert Comment

by:for_yan
ID: 36571268

check also here:
http://bytes.com/topic/c-sharp/answers/540479-how-dis-enable-network-adapter

This is not about java - but all these commands you can try to
execute form you java code using
Runtime.getRuntime().exec(...)


S. Lorétan
re: How to Dis/Enable Network Adapter?
Hi,

You can disable a network adapter with this shell command:

netsh interface set interface "Network Adapter name" DISABLED

And enable it with

netsh interface set interface "Network Adapter name" ENABLED

This works only under Windows 2003 Server. The problem with Windows 2000/XP
is because the Netshell tools treats network adapters as dedicated
interfaces, and dedicated interfaces can't be enabled or disabled. There is
a workaround if you want to prevent traffic from being passed by the network
adapter. You can use netsh to set a different (private) IP address, which
virtually disable the network adapter.

netsh interface ip set address "Network Adapter name" static (ip address)
(subnet mask) (default gateway) (metric)

And to virtually enable it, you can simply reset its IP with the DHCP

netsh interface ip set address "Network Adapter name" source=dhcp

I hope this helps. Sorry for my english.
0

Featured Post

Free Tool: Postgres Monitoring System

A PHP and Perl based system to collect and display usage statistics from PostgreSQL databases.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
ForLoop Example 3 52
login jsp example 24 65
Android development question 2 54
String array comparison 4 38
By the end of 1980s, object oriented programming using languages like C++, Simula69 and ObjectPascal gained momentum. It looked like programmers finally found the perfect language. C++ successfully combined the object oriented principles of Simula w…
Java had always been an easily readable and understandable language.  Some relatively recent changes in the language seem to be changing this pretty fast, and anyone that had not seen any Java code for the last 5 years will possibly have issues unde…
Viewers learn about the third conditional statement “else if” and use it in an example program. Then additional information about conditional statements is provided, covering the topic thoroughly. Viewers learn about the third conditional statement …
Viewers will learn about the regular for loop in Java and how to use it. Definition: Break the for loop down into 3 parts: Syntax when using for loops: Example using a for loop:

839 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question