With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cnaHealthTableIndex
cna Health Table Index
1.3.6.1.4.1.9.9.237.1.1.2.1.1
This acts as the index to the cnaHealthTable.
Back to CISCO-NMS-APPL-HEALTH-MIB MIB page.
IPHost Network monitor allows you to monitor cnaHealthTableIndex on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco routers right now.