With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cmlrInstGTImismatchCounts
Cisco Multi-layer Routing Inst GT Imismatch Counts
1.3.6.1.4.1.9.9.396.1.1.1.25
Count of message signal units received that could not be routed because of mis-match between GTI values. This object counts are also included in the cmlrInstAbortCounts object.
Back to CISCO-ITP-MLR-MIB MIB page.
IPHost Network monitor allows you to monitor cmlrInstGTImismatchCounts on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco switches right now.