With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
snaNodeOperIdNum
sna Node Operational Id Num
1.3.6.1.2.1.34.1.1.3.1.5
The value identifies the ID number for this Node instance. This is the last 5 hexadecimal digits of the SNA Node id.
Back to SNA-NAU-MIB MIB page.
IPHost Network monitor allows you to monitor snaNodeOperIdNum on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco switches right now.