With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
sdlcPortOperName
sdlc Port Operational Name
1.3.6.1.2.1.41.1.1.2.1.1
An octet string that describes the physical port to which this interface is currently attached. It has implementation-specific significance.
Back to SNA-SDLC-MIB MIB page.
IPHost Network monitor allows you to monitor sdlcPortOperName 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.