Juniper vJunos-router review
A capable free Junos lab router, limited by 100 Mbps throughput and single-VM design.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Juniper vJunos-router is a virtual version of Juniper’s Junos-based MX routing platform, packaged as a virtual machine for x86 servers. It is aimed at network labs, training, demonstrations, proof-of-concept work and configuration validation rather than production routing. The Free plan provides a free lab-use download, making it suitable for engineers, students and teams that need to build virtual topologies without physical Juniper routers.
Its feature set covers common routing practice and subscriber-network scenarios. The router supports BGP, IS-IS, OSPF and static routing, along with virtual route reflection. It can provide virtual broadband network gateway functions such as L2TP/LNS and PPPoE, plus DHCPv4, DHCPv6 and static or dynamic RADIUS subscriber interfaces. A single instance supports up to 96 router interfaces, console and SSH access to the virtual control plane, and media MTU settings from 256 to 9192 bytes. Deployment is self-hosted on Linux, with documentation covering KVM environments.
The main boundary is scale. Throughput is limited to 100 Mbps aggregated across interfaces, and the architecture is a single virtual machine with a single Routing Engine; high availability is not provided. Those constraints make vJunos-router a practical choice for protocol exercises, topology validation and small-scale routing labs, but a poor fit for production networks or demanding traffic loads. Teams that require redundant routing, higher throughput or a production-oriented virtual-router design should consider an alternative product.
Juniper vJunos-router pros and cons
- Where it wins
- Free Junos virtual machine for x86-based network labs
- Supports BGP, IS-IS, OSPF, static routing and virtual route reflection
- Offers up to 96 interfaces with console and SSH control-plane access
- Where it doesn't
- 100 Mbps aggregate throughput limits larger or production workloads
- Single-VM architecture does not provide documented high availability
- Self-hosted deployment requires Linux and virtual-machine administration
Juniper vJunos-router fact sheet, pricing and score →
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