Compact 1.6 Tbps Fixed-Configuration Universal Router
The Juniper MX301 is a 1U fixed-configuration universal routi...
Compact 1.6 Tbps Fixed-Configuration Universal Router
The Juniper MX301 is a 1U fixed-configuration universal routing platform built on Juniper’s Trio 6 silicon. It delivers 1.6 Tbps from four 400GbE QSFP56-DD ports, six 100GbE QSFP28 ports, and sixteen SFP ports that run at 1, 10, 25, or 50GbE, with line-rate MACsec on every WAN port. Juniper’s hardware guide describes the MX301 and MX301-M as enhancing the capabilities of the MX204, and with the MX204’s last order date set for June 15, 2027, the MX301 is the fixed-configuration MX that MX204 deployments will migrate to.
BrightStar Systems supplies the MX301-HW-BASE and MX301-M-HW-BASE bundles on a request-for-quote basis. Every unit we supply is tested on our 9-point process and covered by our 1-year in-house warranty for end users.
MX301 vs MX301-M
The two models are identical in ports, silicon, and forwarding performance and differ only in memory: the MX301 carries 128 GB and the MX301-M 64 GB. Choose the MX301 for larger control-plane scale and headroom; the MX301-M where routing scale is modest and cost matters more.
Juniper MX301 Technical Specifications
Form factor: 1U fixed configuration
Throughput: 1.6 Tbps
Silicon: Juniper Trio 6
WAN ports: 4 x 400GbE QSFP56-DD, 6 x 100GbE QSFP28, 16 x SFP at 1/10/25/50GbE (26 total)
Encryption: Line-rate MACsec on all WAN ports
Memory: 128 GB (MX301) or 64 GB (MX301-M); 400 GB NVMe storage
Operating system: Junos OS
Timing: Synchronous Ethernet, PTP including the G.8275.1 profile
Power: 2 x 850 W power supplies, 1+1 (AC, DC, or HVAC/HVDC); under 500 W typical
Cooling: 6 fan modules, 5+1 redundancy
Lifecycle: Current platform; no Juniper end-of-life announcement
Common MX301 Deployment Scenarios
MX204 replacement and expansion: four times the MX204’s capacity in the same 1U, with 400GbE uplinks and 25/50GbE hand-offs.
Metro and business edge: dense 10/25GbE customer-facing ports with 100GbE and 400GbE toward the core.
Encrypted service delivery: line-rate MACsec on all 26 WAN ports.
Timing-sensitive transport: SyncE and PTP (G.8275.1) for mobile backhaul and similar roles.
MX301 vs Other MX Platforms
MX204: 400 Gbps, 1U fixed. Compact edge and small POPs; last order date June 15, 2027.
MX301: 1.6 Tbps, 1U fixed. MX204 successor for 400G edge, metro, and encrypted services.
MX304: up to 4.8 Tbps, modular with 3 LMIC slots. High-density 100G/400G edge and aggregation.
For a detailed side-by-side of the MX204, MX301, and MX304, see our MX204 guide.
Frequently Asked Questions
Is the MX301 the replacement for the MX204? Juniper’s hardware guide says the MX301 and MX301-M enhance the capabilities of the MX204, and the MX204’s last order date is June 15, 2027. For new deployments that need 400GbE, 25/50GbE, or MACsec, the MX301 is the fixed-configuration MX to evaluate.
Does the MX301 run Junos OS or Junos OS Evolved? Junos OS, per Juniper’s hardware guide.
Does the MX301 support MACsec? Yes. All 26 WAN ports support line-rate MACsec.
What comes in the MX301-HW-BASE bundle? The chassis with its memory (128 GB for the MX301, 64 GB for the MX301-M), two power supplies, and six fan modules. Optics and software licenses are separate.
Related Juniper MX Series Categories
All Juniper MX Series Routers
Juniper MX204
Juniper MX304
Optics & Cables (Juniper)