The Juniper MX304 is the latest addition to the MX Portfolio: a unique combination of compact form-factor, bandwidth modularity, control-plane redundancy, and interface diversity.
Powered by Trio6 Packet Forwarding Engines (PFEs), it guarantees the highest multi-dimensional scales and advanced programmability to address the most demanding roles in your network: Multi-Service Edge, Provider Edge, Enterprise Edge, VPC Gateway and Peering Router to name a few. Also, it can play a key role in disaggregated and distributed broadband networks where a transition from large modular systems to compact form-factor is required.

- Its compact form-factor: 2RU and 610mm depth
- Its power efficiency: ~0.29W/Gbps
- Its large range of interface speed: from 1GE, 10GE, 25GE, 40GE, 50GE, 100GE, 400GE
- Its modularity to match the required forwarding bandwidth, from 1.6Tbps to 4.8Tbps
- The control-plane redundancy with the capability of using two Routing Engines
- The support of Class-C timing and MACsec encryption on all ports (except 1GE at the moment of the publication of this article)
- The diversity of power source: AC, DC, HVAC/HVDC
- Top Left is always occupied by an RE: RE0
- Top Right can be empty or occupied by:
- An LMIC: LMIC2
- Or a RE: RE1
- Bottom Left can be empty or occupied by an LMIC: LMIC0
- Bottom Right can be empty or occupied by an LMIC: LMIC1
To put it differently, the MX304 supports the combination of one or two REs, and one, two or three LMICs with the following conditions: up to 4 cards and max 2 REs.
That’s why the forwarding capability will be:
- 1.6Tbps with one LMIC and one or two REs
- 3.2Tbps with two LMICs and one or two REs
- 4.8Tbps with three LMICs and a single RE
Two examples to illustrate it:



