With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
csiSessionInBLSFrames
csi Session In BLS Frames
1.3.6.1.4.1.9.9.378.1.1.5.1.2
Number of incoming Basic Link Service frames in this session.
Back to CISCO-SVC-INTERFACE-MIB MIB page.
IPHost Network monitor allows you to monitor csiSessionInBLSFrames on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco firewalls right now.
