With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cgrtDestInaccessibleDrops
Cisco IP Transfer Point GRT Dest Inaccessible Drops
1.3.6.1.4.1.9.9.334.1.2.2.1.10
The number of MSUs dropped for this destination due to inaccessible route state.
Back to CISCO-ITP-GRT-MIB MIB page.
IPHost Network monitor allows you to monitor cgrtDestInaccessibleDrops on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco multiplexers right now.