Juniper MIC-3D-20GE-SFP-B 20x1GbE Modular Interface Card Specification Table
| Specification | Details |
|---|
| Product Model | Juniper MIC-3D-20GE-SFP-B |
| Product Type | Modular Interface Card (MIC) |
| Supported Platforms | Juniper MX80, MX104 |
| Port Density | 20 × 1GbE SFP Ports |
| Interface Type | SFP (Fiber / DAC supported via modules) |
| Ethernet Speed | 1 Gbps per port |
| Switching Role | Layer 2 / Layer 3 interface module (router dependent) |
| Hot-Swappable | Yes (no system shutdown required) |
| Form Factor | Modular card for MX series chassis |
| Operating System | Junos OS |
| Port Grouping | Logical GE interfaces (ge-/) |
| Max Throughput | Up to 20 Gbps aggregate (theoretical) |
| Redundancy Support | Depends on chassis / routing engine design |
| Supported Junos Versions | Varies (MX80 from 10.2+, MX104 from 13.2R2+) |
| Physical Interface Support | Standard 1G SFP optics |
| Use Case | Metro Ethernet, enterprise edge, service provider aggregation |
Juniper MIC-3D-20GE-SFP-B 20x1GbE Modular Interface Card for MX80 / MX104 – High-Density Enterprise Network Module
The Juniper MIC-3D-20GE-SFP-B 20x1GbE Modular Interface Card is a high-performance expansion module designed for Juniper MX80 and MX104 routers. It provides scalable and reliable 20-port 1 Gigabit Ethernet (1GbE) connectivity, making it an ideal solution for service providers, enterprise core networks, and large-scale data routing environments.
This modular interface card is built to enhance network capacity and flexibility, allowing organizations to expand their routing infrastructure without replacing existing hardware. With 20 SFP-based 1GbE ports, it supports fiber connectivity for long-distance, high-speed, and interference-free data transmission.
Designed for carrier-grade performance, the MIC-3D-20GE-SFP-B ensures stable packet forwarding, low latency, and efficient bandwidth utilization. It is well-suited for ISP networks, data centers, enterprise aggregation layers, and cloud backbone infrastructures where consistent and high-density connectivity is required.
Fully integrated with Juniper’s MX Series architecture, this module delivers seamless compatibility, easy deployment, and reliable operation under heavy network loads. It supports advanced routing capabilities, making it a trusted choice for mission-critical networking environments.
Key Features:
- 20x 1GbE SFP ports for high-density connectivity
- Designed for Juniper MX80 and MX104 routers
- Fiber-based SFP interface for long-distance networking
- Carrier-grade performance and reliability
- Low latency and high throughput packet processing
- Ideal for ISP, enterprise, and data center networks
- Modular design for flexible network expansion
Why Choose Juniper MIC-3D-20GE-SFP-B?
This interface card is the perfect solution for organizations needing scalable, stable, and high-density 1GbE networking. It enhances router capacity, improves network efficiency, and ensures smooth data flow in demanding enterprise and service provider environments.
Frequently Asked Questions (FAQ)
1. What is Juniper MIC-3D-20GE-SFP-B used for?
The Juniper MIC-3D-20GE-SFP-B is a Modular Interface Card (MIC) designed for Juniper MX Series routers. It provides 20 ports of 1GbE SFP connectivity, mainly used for enterprise routing, ISP networks, and aggregation layers.
It expands port density in routers like:
- Juniper MX80
- Juniper MX104
2. How many ports does MIC-3D-20GE-SFP-B have?
It includes 20 × 1GbE SFP ports, allowing high-density Gigabit Ethernet connectivity in a single modular card.
3. What is the speed of this interface card?
Each port supports:
- 1Gbps (Gigabit Ethernet per port)
- Total aggregated throughput up to 20Gbps full duplex
4. What type of ports does it use?
It uses SFP (Small Form-factor Pluggable) ports, meaning:
- Fiber optic modules (SX / LX)
- Some DAC (Direct Attach Copper) support depending on optics
5. Which routers are compatible with MIC-3D-20GE-SFP-B?
It is compatible with Juniper MX Series routers such as:
- MX80
- MX104
- MX240 / MX480 / MX960 (depending on slot support)
6. Is this a hot-swappable module?
Yes, it is hot-swappable, meaning it can be installed or replaced without shutting down the router (in supported chassis configurations).
7. What is the difference between MIC-3D-20GE-SFP-B and other versions?
Juniper has multiple variants:
- MIC-3D-20GE-SFP (standard)
- MIC-3D-20GE-SFP-E (enhanced model)
- MIC-3D-20GE-SFP-EH (environmentally hardened)
The “B” variant is typically a hardware revision/batch version used in specific deployments.
8. Does it support fiber or copper cables?
Primarily:
- Fiber optic SFP modules (most common)
- Copper support only if using RJ45 SFP modules (not default)
9. Is this card good for ISP or data center use?
Yes, it is widely used in:
- ISP aggregation networks
- Metro Ethernet deployments
- Enterprise edge routing
- Data center access layers
10. What is the maximum bandwidth of this MIC card?
- 20 × 1GbE ports
- Up to 20Gbps total switching capacity per card (theoretical full duplex)
Actual performance depends on router backplane and oversubscription.
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