With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
rcvPortFramesTaggedBECN
rcv Port Frames Tagged BECN
1.3.6.1.4.1.351.110.5.1.1.2.1.1.1.15
The number of frames received that were tagged with BECN bit.
Back to CISCO-WAN-FR-PORT-MIB MIB page.
IPHost Network monitor allows you to monitor rcvPortFramesTaggedBECN 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.