With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
fcIfRNIDInfoPortId
Cisco Fibre Element If RNID Info Port Id
1.3.6.1.4.1.9.9.289.1.1.13.1.8
The identifier of the port in the peer node connected to this port. If the peer node is a channel, as described by the instance of fcIfRNIDInfoUnitType, then fcIfRNIDInfoPortId will be the CHPID (Channel Path Identifier) of the channel path that contains the port in the peer node connected to this port. If the peer node is controlUnit, then fcIfRNIDInfoPortId will be 0. If the peer node is fabric, then fcIfRNIDInfoPortId will be port address of the port in peer node connected to this port.
Back to CISCO-FC-FE-MIB MIB page.
IPHost Network monitor allows you to monitor fcIfRNIDInfoPortId on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco routers right now.