| Product Type | Router |
| Form Factor | Front to back airflow rack-mountable - 1U |
| Throughput | 4.4 Tbps |
| Route Scale | Up to 8 million FIB entries |
| QoS Queues | 8 |
| Jumbo Frame Support | 9216 bytes |
| RAM | 32 GB |
| Storage Capacity | 128 GB |
| MTBF | 130,170 hours |
| Power Consumption (Operational) | 520 Watt |
| Power Supply | Internal power supply - hot-plug |
| Power Redundancy | Optional |
| Installed Power Supply Qty | 2 (max) |
| Connectivity Technology | Wired |
Cisco NCS57B1 Fixed Scale Router 5x400G 24x100G QSFP-DD

Key Benefits
AI-Powered Summaries from Online Customer Reviews
Eye-Insights™ are generated by proprietary AI that analyzes real online customer reviews to highlight top pros and key product features. While we aim for accuracy, insights are provided “as-is” and individual results may vary.
- High port density and 4.4 Tbps throughput make it ideal for modern data center and edge deployments
- Comprehensive routing and management protocols ensure flexibility for complex, large-scale networks
- Operational reliability is enhanced by hot-swappable components and a 130,170-hour MTBF rating
Product Overview
The Cisco NCS57B1 Fixed Scale router is engineered for dense, high-performance network environments that require versatile uplink capacities and robust routing features. Equipped with 5× 400GbE and 24× 100GbE QSFP-DD interfaces, this 1RU unit delivers exceptional throughput of up to 4.4 Tbps and can accommodate up to 8 million FIB entries. It's designed to support modern enterprise and service provider applications requiring ultra-low latency, scalability, and seamless integration with IPv4/IPv6 dual stack environments.
Its 8-core x86 CPU running at 2.0 GHz alongside 32 GB RAM and 128 GB storage enables efficient control plane processing. Advanced Layer 2 and Layer 3 protocols including BGP, MPLS, OSFP, IS-IS, and Segment Routing ensure flexible routing options. Comprehensive features like MACsec encryption, ZTP, SyncE, PTP, and AAA security capabilities enhance security and operational uptime. Additionally, hot-pluggable power supplies and fans support continuous operation with minimal service interruption, while TACACS+ and SSH ensure secure remote management.
Ideal for data centers, metropolitan aggregation, or carrier edge deployments, the NCS57B1 also provides standards-compliant operations with IEEE, FCC, and RoHS certifications. Its environmental resilience includes 5–95% humidity tolerance and a broad temperature operating range of 32°F to 104°F. With its compact design, advanced features, and long MTBF of over 130k hours, this platform delivers a reliable and cost-effective path to modern network infrastructure upgrades.
Specifications
Product Overview
Wireless Features
| Wi-Fi Support |
Compliance & Origin
| Country of Origin | CHINA / UNITED STATES |
| TAA Compliance | Yes |
| Certifications | IEEE 802.1Q, IEEE 802.3ad (LACP), IEEE 802.1ad, CISPR 22 Class A, CISPR 24, EN 61000-3-2, EN 61000-3-3, EN55024, ICES-003 Class A, UL 60950-1 Second Edition, RoHS 6/6, GB 4943, Directive 2004/108/EC, EN 60950-1 Second Edition, IEC 60950-1 Second Edition, Directive 2006/95/EC, GR-1089-CORE, VCCI Class A, GR-63-CORE, KN22 Class A, EN 55022 Class A, FCC CFR47 Part 15 A, CNS 13438 Class A, EN 300 386, KN 61000-4, AS/NZS CISPR22 Class A, UL 62368-1 Third Edition, CAN/CSA C22.2 No. 60950-1 Third Edition, EN 62368-1 Third Edition, IEC 62368-1 Third Edition |
Advanced Security Features
| MACsec Encryption | Supported |
| AAA (Authentication, Authorization, Accounting) | Supported |
| Access Control Lists (ACL) | Supported |
| Routing Protocol Support | BGP, VRRP, OSPFv2, static IP routing, OSPFv3, ECMP, IS-ISv6, MPLS, Bidirectional Forwarding Detection (BFD), IS-ISv4 |
| Security Features | EFP, VLAN trunking, VLAN encapsulation, DSCP, LDP, PTP, L3VPN, RPL, iPXE, SyncE, LACP |
Interfaces
| 400GbE Ports | 5 x QSFP-DD |
| 100GbE Ports | 24 x QSFP-DD |
| Management Port | 1 x RJ-45 |
| Console Port | 1 x RJ-45 |
| USB Ports | 1 x USB |
| Data Link Protocols | 10/25/40/100/400 Gigabit Ethernet |
| Network/Transport Protocols | IPv4, IPv6 |
Physical & Environmental
| Width | 17.3 in |
| Depth | 23.6 in |
| Height | 1.7 in |
| Weight | 29.26 lbs |
| Minimum Operating Temperature | 32 °F |
| Maximum Operating Temperature | 104 °F |
| Operating Humidity Range | 5 - 95% (non-condensing) |
Cloud Management & Licensing
| Remote Management Protocols | SNMP, SNMPv3, SSH, NETCONF, OAM, JSON, YANG, TACACS+, GPB, XML |
| Authentication Methods | Secure Shell (SSH), TACACS+ |
| Zero Touch Provisioning (ZTP) | Supported |