With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
frCircuitSentOctets
fr Circuit Sent Octets
1.3.6.1.2.1.10.32.2.1.7
The number of octets sent from this virtual circuit since it was created. Octets counted are the full frame relay header and the payload, but do not include the flag characters or CRC.
Back to FRAME-RELAY-DTE-MIB MIB page.
IPHost Network monitor allows you to monitor frCircuitSentOctets 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.