Juniper QFX5220 vs QFX5130: Choosing the Right 400G Data Center Switch
The Juniper QFX5220 and QFX5130 are both 400GbE-capable, Junos OS Evolved fixed switches built for EVPN-VXLAN spine-leaf fabrics, but they sit on different Broadcom silicon and target different roles. The QFX5220 is a high-radix, scale-out spine platform on Tomahawk 3, while the QFX5130 pairs a feature-rich Trident 4 ASIC with deeper tables and buffers for flexible leaf and small-spine duty. This comparison breaks down where each fits in a modern data center fabric.
The short answer
Pick the QFX5220 when you are building a large, scale-out spine or high-radix 100G aggregation tier and want maximum port density and forwarding throughput per rack unit at a lower cost per port. Choose the QFX5130 when you need richer L2/L3 feature depth, larger MAC/route/EVPN tables, deeper buffers, and the flexibility to act as either a 400G leaf or a small spine. For most enterprise EVPN-VXLAN fabrics the QFX5130 is the more versatile default; the QFX5220 wins in dense, latency-sensitive spine layers. We can source both on the same Junos-driven fabric.
Juniper QFX5220 vs Juniper QFX5130, head to head
Specifications side by side
- ASIC
- Broadcom Tomahawk 3 class
- Broadcom Trident 4
- Switching capacity
- 25.6 Tbps (32CD); 12.8 Tbps (128C)
- 25.6 Tbps (32CD model)
- Form factor
- 1U (32CD) or 4U (128C)
- 1U
- 400GbE ports
- 32x QSFP56-DD (QFX5220-32CD)
- 32x QSFP-DD (QFX5130-32CD)
- 100GbE configuration
- 128x 100G (QFX5220-128C, 4U)
- 48x 100G + 8x 400G (QFX5130-48C)
- Port breakout
- 400G to 100/40G; 100G to 25/10G
- Each 400G to 4x100/25/10G (up to 128x100G on 32CD)
- Operating system
- Junos OS Evolved
- Junos OS Evolved
- Fabric role
- Spine / high-radix aggregation
- Flexible leaf or small spine
- Buffering
- Shallow on-chip buffer (spine-optimized)
- Larger on-chip buffer for bursty leaf traffic
- Forwarding tables
- Lean tables tuned for fabric scale-out
- Larger MAC / route / EVPN table scale
- Control plane
- x86 control processor, Junos Evolved
- Intel Xeon D-1500, 32GB DDR4
- Power redundancy
- 1+1 (32CD) / 2+2 (128C)
- 1+1 redundant PSUs, 5+1 fans
Where Juniper QFX5220 wins
- Highest port radix in the pair, up to 128x100G for wide scale-out spines
- Lower cost per 100G port for large fabric aggregation tiers
- Tomahawk 3 throughput tuned for high-density, latency-sensitive spine forwarding
- Established 400G platform with a long, proven deployment track record
- Same Junos OS Evolved and Apstra automation as the rest of the fabric
Where Juniper QFX5130 wins
- Trident 4 delivers richer L2/L3 and EVPN feature depth in one box
- Larger MAC, host-route, and EVPN tables support more tenants and endpoints
- Deeper buffers absorb bursty east-west and incast traffic at the leaf
- Flexible 400G/100G mix works as either leaf or compact spine
- Current-generation silicon with strong roadmap longevity
Which one should you buy?
Building a large scale-out spine tier for a 100G/400G IP fabric
Pick Juniper QFX5220. The high-radix design maximizes downlink fan-out and cost-per-port economics where spine forwarding throughput matters most.
Top-of-rack leaf in a multitenant EVPN-VXLAN data center
Pick Juniper QFX5130. Larger forwarding tables and deeper buffers handle many tenants, host routes, and bursty incast better than a spine-tuned switch.
Compact fabric needing one switch model for both leaf and small spine
Pick Juniper QFX5130. Its flexible 400G/100G mix and rich feature set let a single SKU cover both roles, simplifying sparing and operations.
AI/HPC back-end or metro aggregation needing maximum 100G density
Pick Juniper QFX5220. The 128x100G option and lean, high-throughput pipeline fit dense aggregation and scale-out cluster networking.
Frequently asked
What is the main difference between the Juniper QFX5220 and QFX5130?
The QFX5220 is a high-radix, scale-out spine switch built on a Broadcom Tomahawk 3 class ASIC with lean tables and shallow buffers, while the QFX5130 uses a Broadcom Trident 4 ASIC with larger forwarding tables and deeper buffers for feature-rich leaf or small-spine roles. Both run Junos OS Evolved and support standards-based EVPN-VXLAN.
Which switch is better for an EVPN-VXLAN data center fabric?
For the spine tier of a large fabric, the QFX5220 offers better port density and cost per 100G port. For the leaf tier, or any role where tenant scale, larger MAC and route tables, and burst buffering matter, the QFX5130 is usually the stronger choice. Many designs use the QFX5220 as spine and QFX5130 as leaf.
Do both the QFX5220 and QFX5130 support 400GbE?
Yes. The QFX5220-32CD and QFX5130-32CD both provide 32 ports of 400GbE in a 1U chassis, and each 400G port can be broken out into 100/25/10GbE. The QFX5130-48C adds a 48x100G plus 8x400G mix, while the QFX5220-128C focuses on 128x100G in a 4U form factor.
How do switching capacity and buffers compare?
In the 32x400G class both are equal at 25.6 Tbps, but the QFX5130-32CD on Trident 4 pairs that with larger on-chip buffers and tables suited to bursty leaf traffic. The QFX5220 is tuned for high-radix spine forwarding with leaner buffers, and its 4U QFX5220-128C trades raw capacity (12.8 Tbps) for 128x100G of aggregation density. The right pick depends on whether you prioritize table and buffer depth or port radix.
Are the QFX5220 and QFX5130 managed the same way?
Yes. Both run Junos OS Evolved and integrate with Juniper Apstra for intent-based fabric automation and with Mist AI for assurance, so you can operate a mixed QFX5220 spine and QFX5130 leaf fabric from a single automation and telemetry workflow without proprietary fabric lock-in.
Can these switches be sourced TAA-compliant for federal buyers?
Yes. As an authorized HPE Juniper Networking reseller, we can source both the QFX5220 and QFX5130 through TAA-compliant channels and quote them on federal and SLED vehicles including GPC, SAP, FAR, and GSA eBuy, along with Juniper Care support contracts.
Which switch offers better value per port?
For dense 100G aggregation and scale-out spines, the QFX5220 typically delivers lower cost per port. Where you need EVPN scale, larger tables, and deeper buffers in fewer boxes, the QFX5130 delivers more usable feature density per port. We can model both options against your fabric design and quote accordingly.
Is the QFX5130 a replacement for the QFX5220?
Not exactly. They are complementary platforms on different Broadcom silicon. The QFX5220 remains a strong high-radix spine, while the Trident 4 based QFX5130 is the more flexible, feature-rich leaf or small-spine option. The best fabric often combines both rather than treating one as a drop-in replacement.
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