With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
serialPortbps
serial Portbps
1.3.6.1.4.1.351.110.4.1.1.1.4
This object identifies the baud rate of the ports.
Back to BASIS-SERIAL-MIB MIB page.
IPHost Network monitor allows you to monitor serialPortbps 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.