With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cieIfDot1dBaseMappingTable
cie If Dot1d Base Mapping Table
1.3.6.1.4.1.9.9.276.1.5.1
This table contains the mappings of the ifIndex of an interface to its corresponding dot1dBasePort value.
Back to CISCO-IF-EXTENSION-MIB MIB page.
IPHost Network monitor allows you to monitor cieIfDot1dBaseMappingTable 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.