With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cgrtDestTable
Cisco IP Transfer Point GRT Dest Table
1.3.6.1.4.1.9.9.334.1.2.2
The destination table provides state information on the ability to route MTP packets to a particular destination point code.
Back to CISCO-ITP-GRT-MIB MIB page.
IPHost Network monitor allows you to monitor cgrtDestTable on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco firewalls right now.