In our head office where there is a low dust environment, it best suits this use. But in a plant where there is a dusty environment, you may face in and outs and the Network team may be in a bit of a hurdle.
Huawei Ethernet Switches are perfect no-nonsense network switches that can be used in any internal network. They are especially helpful if you require PoE functionalities or if you need to configure network settings manually (e.g. static routing, VLAN). There are no real-life situations I can think of where these switches would not be suitable
Overall, the product is great and we have configured it at our plant and head offices. It is a great product to use and can be configured with minimal efforts and minimal qualifications required. The network engineer doesn't;t need to be a specialized person but needs to be a well aware person so that he may configure it.
The switches perform very well in our core backbone and also in metro Ethernet networks. We are able to provide high service availability and greater resilience for our customers. The switches also provide high performance in several data centers where we have a presence focused on IX exchange. They are also very useful as CPEs.
We have never used D-Link support services for our ethernet switches. We only looked for new firmware from their website, which was available for most of the models that are being used in our environment. Other than that, the official blogs and community pages of D-Link support were very helpful for small issues related to different features like NTP, stp, etc.
For the use we have proposed for DE-Links (use in locations with difficult access, or for expanding the network inside rooms), its main advantage is its low price. It has a large part of the competitors' functionalities, of course, in a simpler way, but serving efficiently and at a lower price.
The performance of Huawei is lower than Cisco, but initially the costs inclined the decision towards Huawei, but unfortunately, it was not, the licenses and the manager fired the investment to make it very similar to cisco. Therefore it is preferable to go to the Cisco switches for reliability and robustness.