With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
rprSpanErrorStatsContainedFrames
rpr Span Error Stats Contained Frames
1.0.8802.17.1.1.1.5.4.1.12
The number of received (PHY to MAC) frames that were removed due to context containment
Back to IEEE-802DOT17-RPR-MIB MIB page.
IPHost Network monitor allows you to monitor rprSpanErrorStatsContainedFrames 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.
