With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
rprFairnessSTQLowWaterMark
rpr Fairness STQ Low Water Mark
1.0.8802.17.1.1.1.2.2.1.19
The lowest level of STQ occupancy since the last reset of this value, in percentage of the STQ size.
Back to IEEE-802DOT17-RPR-MIB MIB page.
IPHost Network monitor allows you to monitor rprFairnessSTQLowWaterMark 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.