With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cpmProcessStackSize
Cisco Process Monitor Process Stack Size
1.3.6.1.4.1.9.9.109.1.2.3.1.17
This indicates the amount of stack memory used by the process.
Back to CISCO-PROCESS-MIB MIB page.
IPHost Network monitor allows you to monitor cpmProcessStackSize on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco routers right now.