NE8000 F1A has 36 1GE ports. According to the NetEngine 8000 F1A Service Router Datasheet3, NE8000 F1A supports flexible combinations of up to 56 ports, including 36 x GE, 16 x 10GE, 2 x 40GE, and 2 x 100GE ports.

 NE8000 X4 and X8 are high-end core routers designed for large-scale IP backbone networks, data centers, and metro networks . They support various redundancy designs to ensure high availability and reliability, such as MPU (Main Processing Unit) 1+1 backup, SFU (Switch Fabric Unit) 7+1 backup, and PEM (Power Entry Module) 1+1 backup . MPU 1+1 backup means that two MPUs work in active/standby mode and provide control plane redundancy . SFU 7+1 backup means that eight SFUs work in N+1 mode and provide data plane redundancy . PEM 1+1 backup means that two PEMs work in active/standby mode and provide power supply redundancy . The NE8000 X4 and X8 do not support power supply 9+1 backup, which is a feature of the NE8000 X16 router .

NetEngineAR611W is a desktop router that is designed for small enterprises and SOHO enterprises. It integrates security and Wi-Fi functions, and its design is risk-free. NetEngineAR611W supports multiple WAN interfaces, such as ADSL2+, VDSL2, GE, and LTE. It also supports firewall, VPN, IPSec, NAT, and other security features. NetEngineAR611W can provide Wi-Fi coverage for up to 32 users.

The technology that is not recommended for data centers is 802.1x. This is because 802.1x is a port-based authentication protocol that requires each device to be authenticated before accessing the network. This can cause delays and complexity in data center environments where there are many devices and high-speed connections2

The NE8000M1C supports dual AC/DC power modules. According to the NetEngine 8000 M1C Service Router Datasheet, NE8000M1C supports two power modules that can work in 1+1 redundancy mode. The power modules can be AC or DC power modules.

Free mobility cannot be deployed for traffic between VNs. Free mobility is supported only for policies in a VN. Communication between VNs can be directly implemented on the border node or through the external firewall. Free mobility is a feature that allows users to access network resources without changing their IP addresses or VLANs when they move within a VN. Communication between VNs requires inter-VN routing or firewall policies to ensure security and isolation.

USG6680E, USG6712E, and USG6716E are firewalls that are recommended for data centers. They provide high-performance security protection, virtualization, and cloud management capabilities for data center networks. USG12004 and USG12008 are not firewalls, but routers that are designed for enterprise WANs.

Spine nodes are core nodes on the fabric network, but they do need to support VXLAN in some scenarios. According to the Data Center Networking: What It Is, Why It Matters, And Types article, VXLAN is a tunnel encapsulation technology that allows overlay networks to be created on top of the underlay network. Spine nodes need to support VXLAN when they act as gateways between different overlay networks or between overlay and underlay networks.