SRX5K-SCB3 Juniper SRX5K-SCB3 Switch Control Board
Juniper SRX5K-SCB3 Switch Control Board
Third-Generation High-Bandwidth Fabric Engine for SRX5000 Series
The Juniper Networks SRX5K-SCB3 Enhanced Switch Control Board is a third-generation, high-performance fabric module designed for Juniper SRX5000 Series Services Gateways, including the SRX5400, SRX5600, and SRX5800 platforms. Acting as the core switching fabric and control plane interface, the SCB3 delivers the bandwidth and scalability required to support next-generation security processing and high-speed network interfaces.
Engineered to meet the demands of modern data centers and service provider networks, the SRX5K-SCB3 provides enhanced backplane throughput to support 100GbE and 400GbE-ready architectures, eliminating bottlenecks and ensuring seamless data flow between chassis components. It is a critical requirement for deploying high-performance modules such as SPC3 (Services Processing Cards) and IOC4 (Input/Output Cards), enabling terabit-scale firewall, VPN, and intrusion prevention system (IPS) performance.
The SCB3 also serves as the integration point for the Routing Engine, facilitating high-speed communication between the control plane and security processing plane. Optimized for use with the SRX5K-RE-1800X4 Routing Engine, it ensures efficient management, fast configuration processing, and stable system operations.
Designed for carrier-grade reliability, the SRX5K-SCB3 supports 1+1 redundancy, allowing dual modules to operate in an active/active configuration. This not only increases aggregate fabric bandwidth but also ensures seamless failover and continuous network availability in mission-critical environments.
With high-precision clocking and synchronization, the SCB3 ensures all modules within the chassis operate in perfect alignment, enabling low-latency packet processing and consistent performance. Its scalable architecture makes it ideal for large-scale enterprise security deployments, service provider edge networks, and high-capacity data center environments.
Fully integrated with Junos OS, the Juniper SRX5K-SCB3 provides a robust, scalable, and future-ready foundation for high-performance security and networking infrastructures.
Product Specifications – Juniper Networks SRX5K-SCB3 Enhanced Switch Control Board (3rd Generation) for SRX5400, SRX5600, SRX5800
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| Specification | Details |
|---|---|
| Product Name | Juniper Networks SRX5K-SCB3 Enhanced Switch Control Board |
| Manufacturer | Juniper Networks |
| Part Number | SRX5K-SCB3 |
| Product Type | Switch Control Board (SCB) / Fabric Module |
| Compatible Devices | Juniper SRX5400, SRX5600, SRX5800 Services Gateways |
| Fabric Type | Next-Generation High-Speed Switching Fabric |
| Fabric Throughput | Enhanced bandwidth for 100GbE and 400GbE-ready architectures |
| System Role | Switch fabric and control plane interface |
| Line Card Support | Required for SPC3 and IOC4 modules |
| Compatible SPCs | SPC3 (Services Processing Cards) |
| Compatible IOCs | IOC4 (Input/Output Cards) |
| Routing Engine Compatibility | Optimized for SRX5K-RE-1800X4 |
| Redundancy Support | 1+1 redundant SCB configuration |
| Fabric Redundancy Mode | Active/Active operation with dual SCBs |
| High Availability | Seamless failover with dual SCB3 modules |
| Slot Requirement | Occupies dedicated SCB slots in SRX chassis |
| Power Consumption | ~90 Watts |
| Control Plane Integration | Hosts Routing Engine and enables management plane communication |
| Data Plane Integration | High-speed communication with SPCs and IOCs |
| Clocking & Synchronization | High-precision system clocking for low-latency operations |
| Performance Optimization | Eliminates backplane bottlenecks for high-speed interfaces |
| Scalability | Enables terabit-scale firewall throughput |
| Form Factor | Modular card for SRX5000 chassis |
| Hot-Swappable | Yes |
| Cooling | Chassis-based cooling system |
| Operating System | Junos OS |
| Deployment Type | Service provider security, enterprise data centers |
| Use Cases | High-performance firewalling, VPN, IPS, large-scale security processing |
FAQs:
Q1. Can I use the SCB3 with older SPC2 cards?
Yes. The SCB3 maintains backward compatibility with legacy SPC2 and IOC2 modules, though its primary purpose is to enable the higher speeds of the SPC3 and IOC4.
Q2. Is the Routing Engine included with the SCB3?
No. The SRX5K-SCB3 is the fabric carrier. The Routing Engine (such as the SRX5K-RE-1800X4) must be purchased separately and installed into the SCB3.
Q3. How many SCB3 modules are required per chassis?
While a single SCB3 can operate the chassis, two modules are required for full fabric redundancy and to reach the maximum throughput potential of the line cards.
Q4. Can I mix SCB2 and SCB3 in the same SRX chassis?
No. To ensure fabric stability and consistent timing, all Switch Control Boards within a single chassis must be of the same generation.
Q5. Do I need a specific Junos version for this board?
Yes. The SCB3 generally requires Junos OS 15.1X49-D10 or later. It is recommended to use the latest recommended 64-bit Junos release for optimal performance.
