With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
agentPortIfIndex
agent Port If Index
1.3.6.1.4.1.14179.1.2.12.1.2
The switch's Port IfIndex
Back to AIRESPACE-SWITCHING-MIB MIB page.
IPHost Network monitor allows you to monitor agentPortIfIndex on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco firewalls right now.