Juniper MPC3E-3D-NG-Q-R-B Expansion Module
Juniper MPC3E-3D-NG-Q-R-B Expansion Module — 2 MIC Slots, HQoS-Enabled
A next-generation Modular Port Concentrator for Juniper MX Series routers, built for high-scale queuing and flexible interface configuration via two MIC expansion slots.
Overview
The Juniper MPC3E-3D-NG-Q-R-B is a Modular Port Concentrator (MPC) built for Juniper’s MX Series routers — the modular line cards that supply both packet-forwarding capacity and physical interface flexibility to the MX chassis family. This particular variant is the “NG-Q” configuration: a next-generation MPC3E with hierarchical quality-of-service (HQoS) support built in, packaged with two Modular Interface Card (MIC) expansion slots so operators can mix and match interface types to fit the route.
MPCs don’t carry fixed ports on their own — MICs install into the MPC’s slots to provide the actual physical interfaces, whether that’s 10GbE, 40GbE, or 100GbE, depending on which MICs are populated. That modularity is the core value proposition here: a single MPC3E-3D-NG-Q chassis card can be reconfigured over time as interface needs change, without swapping out the entire line card.
This card is built on Juniper’s Trio chipset, the same silicon family used across multiple generations of MX Series MPCs, giving it the scaling and feature consistency operators expect when standardizing on Juniper hardware across a network. It requires an SCBE-MX or SCBE2-MX switch fabric board — it is not compatible with the original SCB fabric — so it’s worth confirming chassis fabric compatibility before deployment.
Throughput & Queuing Capacity
The headline capability of the “Q” variant is hierarchical QoS at scale. Where a standard MPC3E handles queuing at a basic level, the NG-Q model is purpose-built for environments that need granular per-subscriber or per-service traffic shaping.
Line-Rate Throughput
HQoS Scale — Queues per Slot
High queue scale supports granular per-subscriber or per-service traffic shaping — useful for service providers offering differentiated SLAs across large numbers of end customers.
Key Capabilities
Dual MIC Expansion Slots
Two slots for Modular Interface Cards let operators configure 10GbE, 40GbE, or 100GbE interfaces to match the route’s requirements.
Hierarchical QoS
Purpose-built for granular, multi-level traffic shaping — supports up to 512,000 queues per slot for large-scale subscriber environments.
130 Gbps Line-Rate Throughput
Delivers full line-rate forwarding performance suited to service provider and large enterprise traffic loads.
Full L2/L3/L3VPN Support
Complete Layer 2 and Layer 3 feature support, including L3VPN, for use in complex, multi-service MX deployments.
SCBE-MX / SCBE2-MX Fabric Required
Requires an enhanced switch fabric board — this module is not compatible with the original SCB fabric card.
Junos Trio Chipset
Built on Juniper’s Trio silicon for consistent scaling, feature support, and operational familiarity across MX generations.
Specifications
| Attribute | Detail |
|---|---|
| Model | MPC3E-3D-NG-Q-R-B |
| CLI Name | MPC3E NG HQoS |
| Expansion Slots | 2 MIC slots |
| Line-Rate Throughput | Up to 130 Gbps |
| Queue Scale | Up to 512,000 queues per slot (HQoS) |
| Chipset | Junos Trio |
| Switch Fabric Requirement | SCBE-MX or SCBE2-MX (not compatible with original SCB) |
| MTU Support | Up to 9,192 bytes (up to 9,500 bytes on later Junos OS releases) |
| PHY Modes | WAN-PHY at 9.95 Gbps, LAN-PHY at 10.31 Gbps |
| Weight | 15.96 lb (7.26 kg) |
| Power Draw | Up to 583W at 55°C (532W at 40°C, 503W at 25°C) |
| Compatible Platforms | MX Series routers supporting MPC3E-class modules (MX240, MX480, MX960, and select MX2000-series chassis) |
| Packaging | 1 Pack (single module) |
Specifications reflect Juniper’s published data for the MPC3E-3D-NG-Q platform. The “R-B” suffix on this SKU typically denotes reseller grading/condition rather than a hardware variant — confirm condition and warranty terms with your supplier before ordering.
Where This Module Fits
Get Pricing on the MPC3E-3D-NG-Q-R-B
Whether you need a single module or a bulk order for an MX chassis build-out, our team can confirm current stock, condition, and lead time for this exact part.
Email us directly at [email protected] with your quantity and timeline, and we’ll follow up with availability and pricing.
