With IPHost Network Monitor you can run simple snmp requests against a Huawei device in your network.
dot1dTpLearnedEntryDiscards
dot1d Tp Learned Entry Discards
1.3.6.1.4.1.207.1.4.167.116.4.1.1.1
The total number of Forwarding Database entries, which have been or would have been learned, but have been discarded due to a lack of space to store them in the Forwarding Database. If this counter is increasing, it indicates that the Forwarding Database is regularly becoming full (a condition which has unpleasant performance effects on the subnetwork). If this counter has a significant value but is not presently increasing, it indicates that the problem has been occurring but is not persistent.
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IPHost Network monitor allows you to monitor dot1dTpLearnedEntryDiscards 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 VPN routers right now.