With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
appnNodeNnCongested
appn Node Network Node Congested
1.3.6.1.2.1.34.4.1.1.2.11
Indicates whether this node is congested. Other network nodes stop routing traffic to this node while this flag is on. This object corresponds to cv4580, byte 7, bit 0.
Back to APPN-MIB MIB page.
IPHost Network monitor allows you to monitor appnNodeNnCongested 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.