Please remember when setting your SNMP Community String that it is Case Sensitive. That means that "public" is not the same as "Public".
Let's start with logging into a single iDrac. Open a browser window and go to the IP of your iDrac6s. Login with your credentials or the default ones if you haven't changed them. Which you should change the default credentials or disable them and add new accounts for security reasons. You should also have all iDracs on a separate management network that is not accessible from the Internet. If you need to get to them from external, I suggest you setup some machine that you can remote into and then access that management network from there, or setup a highly secure gateway or VPN that will give you access to that management network.
There is one more place to check your community string. Go to iDrac Settings on the left side. Click on Network/Security tab, and then the Services sub-tab at the top. Scroll down to find SNMP Agent box. Make sure the check box is checked so it is enabled and enter your community string here. Then click the Apply button at the very bottom of the page.
64bit - http://www.dell.com/support/home/us/en/04/Drivers/DriversDetails?driverId=6RWMR
You will also need a text file with all of your iDrac6 IPs, each listed on a separate line.
The next step is to grab a copy of the config of the iDrac that you just set in the above steps. On your machine with access to your iDrac network, and with the DRAC Tools installed, you are going to run the following command from an Administrative level command prompt.
**NOTE**: These racadm commands below are for iDrac6 running 1.99. Different firmware may have different commands that you will need to look up in the iDrac CLI manuals if the below do not work.
racadm -r IPofTheIDrac -u Username -p Password getconfig -f LocationForTxtFile
Replace IPofTheIDrac with the IP of the iDrac you configured above.
Replace Username with your iDrac username.
Replace Password with your iDrac password.
Replace LocationForTxtFile with a path to where you want the configuration text file created. I put the config file in the same location as my iDracs.txt file with all of my iDrac IPs just to keep them together. In this example I put both in a folder c:\idrac.
The other sections we are going to keep are [cfgOobSnmp], [cfgIpmiLan], [cfgIpmiPet] sections. There are 4 cfgIpmiPet sections, each with a different Index, but I only set the first one so I am removing the others. You don't have to keep every setting under each section. Just the settings that we changed in the GUI.
Now save that file, maybe with a different name so that you can keep the original. I'm going to save mine as idrac6push.txt in the same folder.
Here is where we finally push the config to all iDracs. You will use a PowerShell script. Right click on the PowerShell icon on your taskbar and select Run ISE as Administrator. When it opens copy this script into the top window. You will need to replace Username and Password to your own.
$servers = Get-Content .\idracs.txt
$servers | foreach {
invoke-expression "racadm.exe -r $_ -u Username -p Password config -f c:\idrac\idrac6push.txt"
}
When you are ready, click on the green play button in the middle of the tool bar to start the script. The script will set the config on each iDrac one at a time. You will see output for each idrac like in my screenshot above showing those 3 sections we kept in the config file. You can scroll back through the results pane to see if there were any errors.
Congratulations, now all of your iDrac6 devices should have the same SNMP settings.