Core and data center applications are the strengths of Arista products. The distribution layer is also a good fit. For the access layer, it would be more of a niche product.
We manage a lot of public infrastructure and schools which means we need reliable hardware that is easy to prep and install quickly due to time constraints. The price is great as we must keep a close eye on our budget.
We use these switches in all types of situations and configurations some are full SFP and others are ethernet but honestly the software and hardware are great for our usage.
Wireless Access Points (APs) zero touch provisioning
Its high-end family (running the AOS-CX firmware) supports a virtualization technology called VSX (Virtual Switching Extension) which allows 2 switches to present itself as one virtualized switch under Layer 2, and as 2 separate routers under Layer 3; thereby providing high availability.
I have had issues finding monitoring software that natively supports Provision/Aruba OS. Most are designed primarily with Cisco in mind.
HPE/Aruba switches have historically had issues with corrupt flash. This seems to be less common in more recent models.
HPE/Aruba's switching portfolio can be confusing. Some models run on the Aruba OS while some others run on Comware. There is some overlap in these model lines so at times is can be tough to tell which switch is right.
It is a very good product, has almost all the feature you can need to access switches, a simple web GUI management, but not all can be configured from the GUI interface.
I have used the Catalyst 6500 series in the past. From my point of view, the Arista surpasses the Catalyst on just about every front. Originally we were planning on implementing the Nexus 7000/7700 series switches for our core. Though a little more feature rich, it did not provide features we needed that the Arista did. The Nexus also was a confusing and complex platform to work with. Also, the Nexus was a significantly more expensive solution. Although very happy with the Arista switches we may evaluate the Aruba HPE 8400 chassis-based switches along with Arista switches in the future.
The HPE Aruba Switches are definitely easier to setup than Cisco Catalyst Switches. We prefer to have a managed interface, so the HPE Aruba Switches are a better option than most Netgear or D-Link switches. Compared to HPE Networking Switches, the Aruba models typically are cheaper and perform nearly as well
