# Data center networking: what AI models recommend, November 2026

Gane Index, November 2026 Edition. Asked as "data center switching platform" and as "data center network fabric", six framings each, to fourteen models with search on, on behalf of a mid-market B2B company. Added to the November 2026 Edition. Page: https://www.gane.ai/index/it/network/data-center-networking/2026-11

**Standing:** Arista Networks leads with 42% of first choices; verdict clear leader. 43 first choices across the direct, paraphrase, budget and scale prompts.

## First-choice share

| Rank | Product | Share | Negative rate | Labels |
|---|---|---|---|---|
| 1 | [Arista Networks](https://www.gane.ai/index/it/vendors/arista-networks/index.md) | 42% | 13% | 54 |
| 2 | [SONiC](https://www.gane.ai/index/it/vendors/sonic/index.md) | 5% | 14% | 14 |
| 3 | [Cisco Nexus](https://www.gane.ai/index/it/vendors/cisco-nexus/index.md) | 5% | 42% | 57 |
| 7 | [Juniper Networks](https://www.gane.ai/index/it/vendors/juniper-networks/index.md) | 2% | 16% | 31 |
| 22 | [Dell PowerSwitch](https://www.gane.ai/index/it/vendors/dell-powerswitch/index.md) | 0% | 4% | 25 |
| 23 | [HPE Aruba CX Series](https://www.gane.ai/index/it/vendors/hpe-aruba-cx-series/index.md) | 0% | 0% | 10 |
| 25 | [NVIDIA Spectrum-X](https://www.gane.ai/index/it/vendors/nvidia-spectrum-x/index.md) | 0% | 30% | 20 |
| 139 | [Cisco ACI](https://www.gane.ai/index/it/vendors/cisco-aci/index.md) | 0% | 62% | 13 |
| 140 | [VMware NSX](https://www.gane.ai/index/it/vendors/vmware-nsx/index.md) | 0% | 67% | 15 |

Rank is by share of first choices among all 140 products named; products with the same share are tied, and the order among them carries no meaning. The table lists those with at least 10 labels.

## Each model's first choice on the direct prompt

- Claude Haiku 4.5: no first choice
- GPT-5.4 mini: Arista Networks; alternatives Cisco Nexus, Juniper Apstra
- Gemini 3.5 Flash: Arista Networks; alternatives Dell PowerSwitch, HPE Aruba EdgeConnect, Juniper Networks
- Perplexity Sonar: Arista EOS with CloudVision; alternatives Apstra, Cisco Nexus, HPE Juniper Networking
- Grok 4.20: Arista Networks; alternatives Cisco Nexus, Dell PowerSwitch Z/S-series, Juniper QFX Series
- Mistral Small: Arista Networks; alternatives Cisco Nexus
- DeepSeek V4 Flash: Arista Networks; alternatives HPE Aruba CX, Juniper QFX
- Llama 4 Maverick: vSTREAM; alternatives Arista Networks, Aruba Instant On, HPE Business Switch Series CW 2050, HPE Networking Comware 5120v3 Campus Switch Series
- Qwen 3.7 Flash: Arista Networks; alternatives Cisco Nexus, Dell PowerSwitch, HPE Aruba EdgeConnect
- Kimi K2: Arista Networks; alternatives HPE Aruba CX Series, Juniper Networks
- GLM 4.7 FlashX: Cisco Nexus, HPE Aruba CX; alternatives Arista EOS, Juniper Junos
- MiniMax M2.5: Arista Networks; alternatives Cisco Nexus, Juniper Networks
- GPT-6 Luna: Arista EOS with CloudVision; alternatives Cisco Nexus 9000 with NX-OS and Nexus Dashboard Fabric Controller, QFX with Apstra
- Muse Glimmer 30B: Arista Networks; alternatives Cisco Nexus

## Sources the answers cite

66 of 84 answers came back with a source list, from 13 of 14 models. Sites named in the most answers:

- cisco.com: 35 answers, 64 citations
- juniper.net: 33 answers, 56 citations
- arista.com: 25 answers, 44 citations
- reddit.com: 24 answers, 37 citations
- hpe.com: 20 answers, 25 citations
- nokia.com: 18 answers, 27 citations
- linkedin.com: 16 answers, 19 citations
- router-switch.com: 14 answers, 15 citations

Pages named in the most answers:

- https://juniper.net/us/en/products/data-center-networking.html (15 answers)
- https://cisco.com/c/dam/en_us/partners/downloads/lean-ai-ready-data-center-blueprint.pdf (13 answers)
- https://guideflow.com/blog/data-center-networking (12 answers)
- https://nokia.com/sites/default/files/2026-05/market_guide_for_dat_840744_ndx.pdf (11 answers)
- https://gane.ai/index/it/network/data-center-networking (10 answers)
- https://reddit.com/r/networking/comments/194xev4/data_center_switching (10 answers)
- https://arista.com/assets/data/pdf/Whitepapers/Midsize-Enterprise-Whitepaper.pdf (9 answers)
- https://juniper.net/assets/us/en/local/pdf/additional-resources/1600074-en.pdf (9 answers)
- https://portal.gigaom.com/reprint/gigaom-radar-for-data-center-switching-250821-nokia (9 answers)
- https://g2.com/categories/data-center-networking (8 answers)

## Warned against

- Cisco Nexus: 24 of 57 labels negative. "Avoid or apply extra due diligence to: Cisco Nexus/NX-OS and Cisco ACI for general-purpose data centers if you are sensitive to complexity, software quality, support timeliness and pricing." (Muse Glimmer 30B, negative prompt)
- VMware NSX: 10 of 15 labels negative. "Avoid or be very cautious with VMware NSX, Cisco ACI, Cisco Meraki, Juniper Networks (in some contexts), and OpManager Nexus" (Mistral Small, negative prompt)
- Cisco ACI: 8 of 13 labels negative. "Cisco ACI: Overkill. High licensing costs, a steep learning curve, and it locks you into a proprietary policy model." (DeepSeek V4 Flash, paraphrase prompt)
- Arista Networks: 7 of 54 labels negative. "Avoid for tight budgets: Cisco (Nexus 9000), Arista (DCS series), or Juniper (QFX)" (Grok 4.20, budget prompt)

## Movement since October 2026

Floor: 11 points of share, measured on the calibration repeat.
Same leader: Arista Networks at 42%.

- Arista Networks: 27% to 42%, +15. Cleared the floor by 4 points · rank 1 of 140, unchanged.
- Dell PowerSwitch: 7% to 0%, −7. Inside the floor by 4 points · rank 3 → 22 of 140.
- HPE Aruba CX Series: 5% to 0%, −5. Inside the floor by 6 points · rank 6 → 23 of 140.
- SONiC: 2% to 5%, +3. Inside the floor by 8 points · rank 12 → 2 of 140.
- Cisco Nexus: 7% to 5%, −2. Inside the floor by 9 points · rank 2 → 3 of 140.
- Juniper Networks: 0% to 2%, +2. Inside the floor by 9 points · rank 21 → 7 of 140.
- NVIDIA Spectrum-X: 0% to 0%, ±0. Inside the floor by 11 points · rank 25 of 140, unchanged.
- Cisco ACI: 0% to 0%, ±0. Inside the floor by 11 points · rank 144 → 139 of 140.
- VMware NSX: 0% to 0%, ±0. Inside the floor by 11 points · rank 143 → 140 of 140.

## Record

- Method: https://www.gane.ai/index/it/methodology
- License: CC BY 4.0. Cite as Gane Index, November 2026 Edition, www.gane.ai/index/it.