With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cwoAoSmbxStatsMDCacheSize
cwo Ao Smbx Stats MD Cache Size
1.3.6.1.4.1.9.9.762.1.3.2.20
This object contains current size of Metadata cache in SMB Application Optimizer.
Back to CISCO-WAN-OPTIMIZATION-MIB MIB page.
IPHost Network monitor allows you to monitor cwoAoSmbxStatsMDCacheSize on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco firewalls right now.