With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cegCongestionHighLastOccurTime
Evolved Packet Core Gateway Congestion High Last Occur Time
1.3.6.1.4.1.9.9.731.1.3.8.5
This object represents the timestamp at which high congestion last occurred on the gateway.
Back to CISCO-EPC-GATEWAY-MIB MIB page.
IPHost Network monitor allows you to monitor cegCongestionHighLastOccurTime on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco wireless switches right now.