Verify SMB Signing is working?

All

I have just enabled SMB signing on my test network. (Microsoft Network Server: Digitally Sign Communication (If Client Agrees)) This was configured by the Default domain policy under Computer Configuration\Windows Settings\Security Settings\Local Policies\ Security Options.

Is there a way to verifiy if the client are using SMB signing, or just sending unsigned packets over the network? I need to verify that this configuration is working correctly. Im pretty sure that the config is setup correctly, and all clients have updated the new GPO setting, but i just need proof that they are using SMB signing

Thanks ffor any help

Drum on....