With IPHost Network Monitor you can run simple snmp requests against a Huawei device in your network.
numberOfSessionsPerNode
number Of Sessions Per Node
1.3.6.1.4.1.207.8.4.4.4.77.2.3.1.2
Number of active sessions created by the corresponding node
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IPHost Network monitor allows you to monitor numberOfSessionsPerNode on Allied Telesis device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Allied Telesis routers right now.