With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cgspLinkUtilEndTimestamp
Cisco GSP Link Utilization End Timestamp
1.3.6.1.4.1.9.9.336.1.6.4.1.4
This timestamp indicates when time period ended for this sample.
Back to CISCO-ITP-GSP-MIB MIB page.
IPHost Network monitor allows you to monitor cgspLinkUtilEndTimestamp 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.