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Welcome to the most comprehensive guide to ordering Juniper’s MX Series Universal Routing Platforms available. The MX Series is the engine behind many of the world’s largest and most complex networks, offering unparalleled flexibility, reliability, and performance. However, a powerful portfolio comes with a wide array of options. This guide is designed to eliminate ambiguity and empower you to build the perfect order.

We have meticulously distilled every table, SKU, and detail from the official ordering presentation into a step-by-step guide. Whether you are architecting a next-generation 400G core, deploying a compact enterprise edge, or managing a network with legacy hardware, you will find the definitive answers you need right here.

Part 1: The Juniper Flex Licensing Architecture #

Understanding Juniper’s software licensing is the critical first step in the ordering process. The modern Flex Licensing model is a use-case-driven framework that aligns software capabilities and cost with your specific network role. This ensures you only pay for the features you need, providing significant commercial flexibility.

1.1: Core Software Tiers Explained #

The Flex model is built upon three primary tiers. Every modern MX line card or compact chassis starts with a Base Hardware SKU that includes the Standard software tier by default. You can then upgrade to the Advanced or Premium tiers via a separate license.

1.2: Add-On Feature Licenses #

While the core tiers cover most routing functions, certain specialized services require separate, stackable licenses:

• Subscriber Management (BNG): To enable BNG functionality, you must purchase specific Right-To-Use (RTU) SKUs in addition to the Premium license. This includes licenses for subscriber scale (e.g., S-SA-<N>K) and advanced features like policy control via Gx/Gy (S-BB-GX, S-BB-GY).
• MACsec: MACsec encryption is licensed perpetually based on bandwidth. You must purchase enough licenses to cover the aggregate bandwidth of all ports where MACsec is enabled. SKUs include S-MX-1C-MSEC-P (100G), S-MX-4C-MSEC-P (400G), and S-MX-4C8-MSEC-P (480G).
• Junos Fusion: To build a Junos Fusion fabric, you need a license for the Aggregation Device (S-MX-AD-FUSION-LIC) and a license for each Satellite Device (e.g., S-MX-SAT-QFX5100).
• Inline J-Flow: While the Premium tier enables the feature, large-scale deployments often utilize a chassis-based license for simplicity (e.g., S-JFLOW-CH-MX10008).
• Logical Routers: Requires the JS-LR license.
• Services on MS-MPC/MS-MIC: Services like Stateful Firewall (S-FW-NPU) or IPsec (S-ES-NPU) on dedicated service cards require per-NPU licenses.

1.3: License Models: Subscription vs. Perpetual #

Juniper offers two ways to purchase Flex licenses:

• Subscription: A term-based license (1, 3, or 5 years) that includes the software right-to-use and Juniper support for the duration of the term. This is the most common and recommended model.
• Perpetual: A one-time purchase of the software license that is valid for the life of the hardware. Crucially, a separate Juniper Care support contract must be purchased for the perpetual license.

1.4: Decoding the License SKU #

Flex License SKUs follow a standard, easy-to-understand format: S-MX-(B)-(XX)-[C1]-(Y)

• S-MX: Software for MX Series
• B (Bandwidth): Denotes the capacity of the hardware. Examples: 96C = 9.6T, 16C = 1.6T, 4C8 = 480G (4x100G + 8x10G).
• XX (Tier): A1 for Advanced, P1 for Premium.
• C1 (Class): A special designator for specific platforms. C1 is used for Compact MX (MX204, MX304) and the MX10003.
• Y (Term): 1, 3, 5 for subscription years, or P for Perpetual.

Part 2: Modular Platforms – The Powerhouses of Scale and Flexibility #

For networks demanding the highest levels of performance, density, and customizability, the modular MX chassis are the premier choice.

2.1: The MX10000 Series (MX10008 & MX10004) #

The flagship of the MX portfolio, the MX10000 line is engineered for the 400G era and beyond, delivering unparalleled density and performance for the most demanding network roles.

Chassis Bundles #

Your first choice is the chassis bundle. PREMIUM bundles are fully redundant, equipped with dual Routing Engines (REs) and N+1 power and fabric, making them ideal for mission-critical applications. BASE bundles provide a non-redundant starting point for less critical roles or lab environments.

MX10K Line Cards & Critical Fabric Requirements #

Ordering a line card is a two-step process: select the base hardware, then add the Flex license. A critical and often overlooked step is ensuring you order the correct number of Switch Fabric (SF2) cards. The throughput of each line card is directly proportional to the number of installed SF2s.

MX10K-LC9600 (9.6 Tbps) #

• Hardware: MX10K-LC9600-BASE
• License: S-MX-96C-[A1|P1]-[Y|P]
• Fabric Requirement: To achieve the full 9.6 Tbps of line-rate performance, 6 SF2 fabric cards are mandatory. Using fewer SF2s will result in reduced, predictable throughput (e.g., 5 SF2s provide ~6.9 Tbps).
• PAYG: Yes. A minimum of 25% of the card’s capacity (2.4T) must be licensed at purchase. This is achieved by buying 6x S-MX-4C-[A1|P1]-D-[Y|P] (400G) PAYG licenses.

MX10K-LC4800 (4.8 Tbps) #

• Hardware: MX10K-LC4800-BASE
• License: S-MX-48C-[A1|P1]-[Y|P]
• Fabric Requirement: To achieve the full 4.8 Tbps of line-rate performance, 6 SF2 fabric cards are mandatory.
• PAYG: Yes. A minimum of 25% of the card’s capacity (1.2T) must be licensed at purchase, requiring 3x S-MX-4C-[A1|P1]-D-[Y|P] PAYG licenses.

MX10K-LC480 (480 Gbps) #

• Hardware: MX10K-LC480-BASE
• License: S-MX-4C8-[A1|P1]-[Y|P]
• Fabric Requirement: To achieve full 480 Gbps throughput, 4 SF2 fabric cards are required (with Junos 23.4R1 or later). With only 3 SF2s, throughput is limited to ~384 Gbps.
• PAYG: No.

Sample BoM: High-Density Service Provider Edge #

2.2: The MX960, MX480 & MX240: The Versatile Workhorses #

These legendary platforms are the bedrock of countless networks, prized for their reliability and an extensive ecosystem of Modular Port Concentrators (MPCs).

Chassis Bundles #

For all new deployments, it is critical to select a BASE3 or PREMIUM3 bundle. These bundles include the enhanced midplane, which is mandatory for supporting modern, high-performance MPCs like the MPC7E, MPC9E, and MPC10E.

Popular MPCs and Licensing #

These chassis support dozens of line cards. For new deployments, Flex licenses are standard. However, a vast installed base uses the legacy -IR (limited L3VPN scale) and -R (full scale) license model.

• MPC7E-MRATE: 480 Gbps, Multi-rate 10G/40G/100G. (Flex License: S-MX-4C8-XX-Y)
• MX2K-MPC9E: 1.6 Tbps, requires separate MICs. (Flex License: S-MX-8C-XX-Y per MIC)
• MPC10E/MPC11E: High-density 100G/400G line cards.

Sample BoM: Versatile Metro Aggregation (Legacy Licensing Example) #

This BoM reflects a common configuration using the legacy license model.

Part 3: Compact Platforms – Maximum Power, Minimum Footprint #

When performance is non-negotiable but space and power are constrained, the compact MX platforms deliver.

3.1: The MX304: Compact Without Compromise #

Delivering an incredible 4.8 Tbps of throughput in a 2RU chassis.

• Chassis: MX304-BASE (1 RE) or MX304-PREM (2 REs).
• Line Card: Uses up to four MX304-LMIC16-BASE (1.6T) Lightweight Modular Interface Cards.
• License: S-MX-16C-[A1|P1]-C1-[Y|P].
• PAYG: Yes. A 50% minimum attach rate (800G) is required per LMIC. This is fulfilled by purchasing 8x S-MX-1C-[A1|P1]-C1-[Y|P] licenses for each LMIC you intend to partially populate.

Sample BoM: Redundant BNG Edge #

3.2: The MX204: The 1RU Powerhouse #

Delivering 800 Gbps with fixed 100G/25G ports in a single rack unit.

• Hardware: MX204-HW-BASE or the convenient, pre-configured stockable SKUs MX204-HWBASE-AC-FS (AC) and MX204-HWBASE-DC-FS (DC).
• License: A single, chassis-wide S-MX-4C-[A1|P1]-C1-[Y|P] license activates all ports and features.

Sample BoM: Secure Enterprise WAN Edge #

Part 4: Finalizing Your Order – The Critical Last Step #

Remember that active support is mandatory for all hardware components and all perpetual software licenses. A Juniper Care contract is not an optional add-on; it is an integral part of the solution, providing access to Junos OS updates, bug fixes, and Juniper’s world-class Technical Assistance Center (JTAC). Subscription licenses conveniently bundle the support cost for the duration of the term.

We hope this exhaustive guide has demystified the MX Series ordering process. By carefully considering your use case and following these detailed steps, you can confidently build a configuration that will serve as a powerful and reliable foundation for your network for years to come.