With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cgrtDestOctetsIn
Cisco IP Transfer Point GRT Dest Octets In
1.3.6.1.4.1.9.9.334.1.2.2.1.9
The number of Octets in MSUs that arrived to this signalling point bound for this destination.
Back to CISCO-ITP-GRT-MIB MIB page.
IPHost Network monitor allows you to monitor cgrtDestOctetsIn 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.