With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cspPscValidSessions
csp Psc Valid Sessions
1.3.6.1.4.1.9.9.370.1.15.1.1.14
The total number of current valid sessions in the session cache.
Back to CISCO-SSL-PROXY-MIB MIB page.
IPHost Network monitor allows you to monitor cspPscValidSessions on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco switches right now.