Is there an alternative to Get-NetAdapterRss that can be used on Windows Server 08/03/etc.? I'm looking to query NIC information from servers with a powershell script, but cannot seem to find how to obtain RSS status/information. Is there a way to do this using WMI instead? I believe the box that the servers are using Intel NICs (if that makes a difference).
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- You can do this with netsh: netsh int tcp show globaljoeqwerty– joeqwerty2012-10-01 19:45:04 +00:00Commented Oct 1, 2012 at 19:45
- @joeqwerty Powershell doesn't show any output for that command; but cmd.exe does.EGr– EGr2012-10-01 20:08:08 +00:00Commented Oct 1, 2012 at 20:08
- Sorry. That's what I meant... to run it from a command prompt... as a last resort.joeqwerty– joeqwerty2012-10-01 20:09:13 +00:00Commented Oct 1, 2012 at 20:09
- Ah, okay. Well I was able to pipe a Win32_NetworkAdapter object into netsh from powershell, and I got output. The only problem is that it doesn't give a boolean value, the whole table is a string (I think)EGr– EGr2012-10-01 20:14:17 +00:00Commented Oct 1, 2012 at 20:14
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2 Answers
This will not work for everyone, but I found that my specific NIC came with a provider for powershell. The namespace I could use was
root\IntelNCS2 Intel provides a scripting reference for using the WMI objects that are provided, and gives a brief description of each, in this PDF.
Basically, to get RSS information for a NIC, you need to get the IANet_AdapterSettings WMI object, and look at the "Receive Side Scaling" or "Receive Side Scaling Queues".
Get-WmiObject -Namespace "root\IntelNCS2" -Class IANet_AdapterSetting | Where-Object {$_.description -eq "Receive Side Scaling"} Get-WmiObject -Namespace "root\IntelNCS2" -Class IANet_AdapterSetting | Where-Object {$_.description -eq "Receive Side Scaling Queues"} Once you get this information, you can handle it any way you want. Don't forget you can pipe the output into Get-Member to find methods/properties available for the object.
Unfortunately there is no easy way to get this as of Win 2008 - you will have to trawl the Registry for it, unless, like EGr, you have vendor drivers that were nice enough to come with a provider for it.
In Windows 8 and Server 2012, you will have the MSFT_NetAdapterRssSettingData WMI class, which is what you want. But it's not in Windows 2008.
What I mean by trawl the registry is check this key: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class{4D36E972-E325-11CE-BFC1-08002BE10318}\0007
RSS: 1
Still scriptable, just not as simple as a single Powershell cmdlet.
- Out of curiosity, do you know an easy way to find registry keys that have this kind of information? I haven't had to edit/view the registry in my previous jobs, but I just started my current one as a sysadmin. Knowing this information would probably be very beneficial to me, so I would appreaciate any guidance you could provide.EGr– EGr2012-10-03 15:28:13 +00:00Commented Oct 3, 2012 at 15:28
- Well, a "list of useful registry keys" is a very nebulous area and an entire book could probably be written about it. But how I found that particular registry key was I went to Device Manager, and looked at the "Device class guid" for one of my network cards.Ryan Ries– Ryan Ries2012-10-03 18:03:33 +00:00Commented Oct 3, 2012 at 18:03
- Okay, thanks. So to find a device in the registry, the best bet would be to find that device's GUID, then search in the registry?EGr– EGr2012-10-04 19:44:02 +00:00Commented Oct 4, 2012 at 19:44