With IPHost Network Monitor you can run simple snmp requests against a Huawei device in your network.
atiAclClassifierDstMacMaskLen
ati Acl Classifier Dst Mac Mask Len
1.3.6.1.4.1.207.1.4.167.166.1.1.1.5
Destination MAC mask length. 1-48: length in bits 0: Ignored
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IPHost Network monitor allows you to monitor atiAclClassifierDstMacMaskLen 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.