Juniper Apstra: intent-based fabric automation
Juniper Apstra is Juniper's intent-based data center automation solution, acquired in 2021. Uniquely multi-vendor, it automates EVPN-VXLAN fabrics across Juniper, Cisco, Arista, SONiC and Mellanox. Blueprint architecture with continuous validation. An alternative to Cisco ACI, VMware NSX and Nokia SR Linux. Complete 2026 guide.
Intent-based concept
Instead of configuring each switch individually through the CLI, you define the intent: “I want a fabric with 2 spine and 4 leaf switches, with VLAN DB accessible only from VLAN APP and a VTEP on each leaf.” Apstra translates this into configurations and pushes them to the devices.
Architecture
- Apstra Controller: central VM (VMware/KVM), GUI and API
- Apstra Agents: CLI/SNMP connectivity to Juniper/Cisco/Arista/SONiC switches
- Blueprint: fabric model with racks, links and policies
- Continuous validation: Apstra continuously monitors the network against the defined intent
- Root Cause Identification: AI quickly identifies the cause of an outage
Multi-vendor support
- Juniper QFX5120/5130/5200 (native)
- Cisco Nexus 9300-EX/FX/GX (agent)
- Arista 7050X3/7060X4 (agent)
- SONiC (Microsoft open NOS)
- NVIDIA Cumulus/Mellanox
- Roadmap: Dell Z9100, Cisco 8000
Key features
- Visual blueprint design with drag-and-drop racks
- Pre-commit validation: impact simulation before deployment
- Time Voyager: rollback to any previous state
- Extensible: webhooks, Terraform provider and REST API
- Custom probes: Python scripts for business-specific validation
- Multi-tenant fabric topology with security zones
Pricing
- Apstra Controller license: €15,000 excl. VAT (10 switches) to €150,000 excl. VAT (500 switches)
- Per switch: €500-1,500 excl. VAT/year
- No hardware required (VM)
Comparison
- Cisco ACI: Cisco-only, requires an APIC controller, with more expensive licenses
- VMware NSX: hypervisor-centric and not ideal for physical network fabrics
- Nokia SR Linux + EDA: Nokia-only, a recent competitor
- Nautobot: open-source IPAM and source of truth, without direct configuration automation
Use cases
- Migration from Cisco ACI to a multi-vendor environment (Juniper and Cisco coexistence)
- Greenfield DC requiring intent-based networking without vendor lock-in
- Multi-DC environments with heterogeneous infrastructure (e.g., existing Cisco equipment and new Juniper equipment)
- Audit compliance: continuous validation trail
Order from OPTINOC
Juniper Apstra licenses and turnkey deployment from OPTINOC. Configurable multi-vendor EVPN-VXLAN fabric. 24×7 support. Quotation for DC environments with 20-500 switches within 48 hours.