With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cieIfSpeedReceive
cie If Speed Receive
1.3.6.1.4.1.9.9.276.1.1.2.1.11
An estimate of the interface's current receive bandwidth in bits per second. This object is provided for interface with asymmetric interface speeds like ADSL and should be used in conjunction with ifSpeed object. For interfaces which do not vary in bandwidth or for those where no accurate estimation can be made, this object should contain the nominal bandwidth. If the bandwidth of the interface is greater than the maximum value reportable by this object then this object should report its maximum value (4,294,967,295) and ifHighSpeed must be used to report the interace's speed. For a sub-layer which has no concept of bandwidth, this object should be zero.
Back to CISCO-IF-EXTENSION-MIB MIB page.
IPHost Network monitor allows you to monitor cieIfSpeedReceive on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco routers right now.