With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
appnNodeNnIsrDepleted
appn Node Network Node Intermediate Session Routing Depleted
1.3.6.1.2.1.34.4.1.1.2.12
Indicate whether intermediated session routing resources are depleted. Other network nodes stop routing traffic through this node while this flag is on. This object corresponds to cv4580, byte 7, bit 1.
Back to APPN-MIB MIB page.
IPHost Network monitor allows you to monitor appnNodeNnIsrDepleted on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco optical switches right now.