HPE Aruba Networking Cables: Key Considerations for 400G/800G Interconnect and Cabling
November 18, 2025
As data centers evolve towards 400G and 800G Ethernet, selecting the appropriate cables and cabling strategies has become crucial for ensuring network performance and return on investment. HPE Aruba Networking offers comprehensive high-speed interconnect solutions to help enterprises meet the challenges of high bandwidth and low latency.
The rapid growth of cloud computing, artificial intelligence, and the Internet of Things (IoT) is driving the demand for 400G and 800G networks. While traditional Cat6A copper cables retain a cost advantage for short-reach scenarios, Multi-Mode Fiber (MMF) has become the preferred choice for data center backbone cabling due to its high bandwidth and lower power consumption characteristics.
When choosing HPE Aruba Networking cables, the following factors must be considered:
- Reach and Medium: Multi-Mode Fiber (MMF) is suited for short to medium distances within data halls, while Single-Mode Fiber supports longer reaches.
- Port Technology: QSFP-DD and OSFP are common form factors for 400G/800G, requiring compatible cabling.
- Performance vs. Cost: Cat6A copper is ideal for within-rack connectivity, whereas MMF excels in higher-density scenarios.
To maximize network efficiency, adhere to these cabling practices:
- Plan for adequate cable management space to avoid sharp bends that can impair signal integrity.
- Utilize high-quality MMF to ensure optical performance for 400G and beyond.
- Strategically deploy both Cat6A and fiber in hybrid environments to enable flexible scaling.
For instance, in a spine-leaf architecture, MMF can be used for high-speed links between spine and leaf switches, while Cat6A can connect servers to leaf switches.
The HPE Aruba Networking cabling portfolio provides optimized 400G/800G interconnect choices and expert guidance, empowering businesses to build efficient and reliable data center networks. Correctly selecting between Cat6A copper or Multi-Mode Fiber (MMF) can significantly enhance network performance and reduce the total cost of ownership.
To explore specific products in detail, please contact us for expert support.

