With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
pnniLinkPortId
pnni Link Port Id
1.3.6.1.4.1.353.5.4.1.1.9.1.1
The Port Identifier of the link as selected by the local node. This value has meaning only within the context of the node to which the port is attached.
Back to PNNI-MIB MIB page.
IPHost Network monitor allows you to monitor pnniLinkPortId 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.