PowerShell cmdlets included with Message Analyzer
Several PowerShell cmdlets are included within the installation of Message Analyzer. Once installed, launch an elevated PowerShell session and issue the Update-Help command. Then use Get-Help per to view the available cmdlets.
One option available is to perform a capture in a circular method, which allows the trace to continue while dropping older data.
More information can be found at the following links:
http://technet.microsoft.com/en-us/library/dn168858.aspx
http://technet.microsoft.com/en-us/library/dn456518.aspx