With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cnaHealthNotifSeqNum
cna Health Notif Seq Num
1.3.6.1.4.1.9.9.237.1.1.1
The value of this object indicates the sequence number of notifications in order for the NMS/OSS to detect missing notification(s).
Back to CISCO-NMS-APPL-HEALTH-MIB MIB page.
IPHost Network monitor allows you to monitor cnaHealthNotifSeqNum 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.