With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
zoneTxMergeReqs
zone Tx Merge Reqs
1.3.6.1.4.1.9.9.294.1.2.2.1.1
The number of Merge Request Frames sent by this Zone Server to other Zone Servers in the fabric on this VSAN.
Back to CISCO-ZS-MIB MIB page.
IPHost Network monitor allows you to monitor zoneTxMergeReqs 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.