With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
frxNetOutOctets
Cisco 90i Net Out Octets
1.3.6.1.4.1.1570.1.4.1.1.8
Total number of octets transmitted to the Frame Relay Switch (on the T1 interface) by this channel unit. Annex-D and SNMP frames are not counted. CRC bytes are not counted
Back to CISCO-90-MIB MIB page.
IPHost Network monitor allows you to monitor frxNetOutOctets 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.