With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
fcmLinkEnd2PortWwn
fcm Link End2 Port Wwn
1.3.6.1.2.1.10.56.1.10.1.7
The port WWN of end2, or the zero-length string if unknown.
Back to FC-MGMT-MIB MIB page.
IPHost Network monitor allows you to monitor fcmLinkEnd2PortWwn on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco multiplexers right now.