Probably a wasted question given SolarWinds lack of support for Huawei , however just on the chance that someone has successfully resolved this issue.
We have subinterfaces configured on our routers (mixture of AR2240 and NE20E-S4's), I have enabled netstream on the sub interface's , NTA recognizes this but never actually reports anything, so going belt and braces I configured netstream on the primary interface, this never gets picked up by NTA.
So on my router as it stands now I have this
interface XGigabitEthernet0/0/0
description B.T Primary Interface
ip netstream sampler fix-packets 2 inbound
ip netstream sampler fix-packets 2 outbound
port ip netstream record netstream_export
ip netstream inbound
ip netstream outbound
#
interface XGigabitEthernet0/0/0.4083
description BT Tagged VLAN4083
dot1q termination vid 4083
tcp adjust-mss 1460
ip netstream sampler fix-packets 2 inbound
ip netstream sampler fix-packets 2 outbound
port ip netstream record netstream_export
ip netstream inbound
ip netstream outbound
and from NTA on Solarwinds
and from NPM
So does NTA only work with point to point interfaces ?