With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cEigrpPeerIfIndex
Cisco Enhanced Interior Gateway Protocol Peer If Index
1.3.6.1.4.1.9.9.449.1.4.1.1.4
The ifIndex of the interface on this router through which this peer can be reached.
Back to CISCO-EIGRP-MIB MIB page.
IPHost Network monitor allows you to monitor cEigrpPeerIfIndex 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.