With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
pnniRouteFailUnreachableOriginator
pnni Route Fail Unreachable Originator
1.3.6.1.4.1.353.5.4.1.1.1.11
The total number of times where the switching system failed to compute a viable DTL stack as the DTLOriginator because the destination was unreachable, i.e., those calls that are cleared with cause #2 `specified transit network unreachable' or cause #3 `destination unreachable' in the cause IE.
Back to PNNI-MIB MIB page.
IPHost Network monitor allows you to monitor pnniRouteFailUnreachableOriginator 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.
