With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
rmIfScRxAlcr
Cisco Resource Management If Service Category Rx Allocated Cell Rate
1.3.6.1.4.1.9.10.10.1.4.1.1.4
The Allocated Cell Rate (specified in cells per second) for traffic received on the interface for this Service Category. This is the bandwidth allocated-to connections. For CBR and VBR Service Categories, this value increases as a result of connection setup and decreases as a result of connection release. For ABR and UBR Service Categories, this value changes as a result of connection setup and teardown only if non-zero mcr is specified.
Back to CISCO-ATM-RM-MIB MIB page.
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