With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
Cisco Entity Packet Forwarding Engine Performance Current Efficiency
This object provides the actual PFE percentage efficiency. It is determined by the total number of contexts per second divided by maximum theoretical contexts per second supported by the PFE pipeline. Under normal conditions, this number will be 100 and when efficiency starts degrading, it will start going down until it reaches zero.
Back to CISCO-ENTITY-PFE-MIB MIB page.
IPHost Network monitor allows you to monitor cePfePerfCurrentEfficiency on Cisco device via the SNMP protocol.
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Easy monitoring of cePfePerfCurrentEfficiency with IPHost tools