| Product Type | Router |
| Form Factor | Rack-mountable - 1U |
| Airflow | Front-to-back |
| Throughput | 900 Gbps |
| Processor Speed | 1.9 GHz |
| RAM | 32 GB |
| Storage Capacity | 128 GB |
| Power Supply Type | Internal power supply |
| Power Redundancy | Yes |
| Installed Power Modules | 2 (installed) / 2 (max) |
| Power Consumption (Operational) | 400 Watt |
| Operating System | Cisco IOS XR 7.2.1 |
| Warranty | 1-year hardware warranty |
CISCO NCS55A1 24Q6H-SS Router with MACSec, 900 Gbps Throughput

Key Benefits
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- Supports high-density, multi-speed Ethernet interfaces ideal for data center or metro aggregation
- Robust Layer 2/3 routing with integrated security (MACSec) ensures high-performance and secure networking
- Built-in power redundancy and extensive protocol compliance improves uptime and long-term deployment value
Product Overview
The CISCO NCS55A1-24Q6H-SS is an advanced fixed router engineered for high-performance edge, aggregation, and access networking scenarios. Built into a space-efficient 1U enclosure, this router features a high-density port configuration with 24 multi-speed (1G/10G/25G) SFP28 interfaces and 6 QSFP28 40G/100G uplink ports. It includes integrated MACSec for data encryption and supports advanced routing protocols such as BGP, OSPFv2/v3, MPLS, and BFD. With a switching capacity of up to 900 Gbps and 2 million FIB entries, it is ideal for carrier-grade and cloud-scale deployments.
Running Cisco IOS XR 7.2.1, it features secure and scalable management via SNMP v3, YANG, and SSH. The unit includes 32 GB RAM, 128 GB storage, and a redundant 400W power supply in a front-to-back airflow design. Added capabilities like jumbo frame support (9216 bytes), HQoS, and broad compliance certifications ensure suitability for modern enterprises or service providers. Backed by a 1-year hardware warranty, the NCS55A1 offers scalable, secure, and high-throughput routing performance.
Specifications
Product Overview
Wireless Features
Compliance & Origin
| Compliance Standards | 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, AS/NZS 60950-1, ICES-003 Class A, FCC CFR47 Part 15, 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, CNS 13438 Class A, CAN/CSA C22.2 No. 60950-1 Second Edition, EN 300 386, KN 61000-4 |
| Country of Origin | China / Mexico / United States |
| TAA Compliant | Yes |
Advanced Security Features
| MACsec Encryption | Yes |
| Authentication Methods | SSH, TACACS+ |
| Access Control | AAA support |
| L2/L3 Security Features | Yes, includes MACsec, Secure Boot, Control Plane Policing (CoPP) |
Interfaces
| Ethernet Ports | 24 x 1G/10G/25G SFP28 |
| Uplink Ports | 6 x 40G/100G QSFP28 |
| Management Port | 1 x RJ-45 |
| Console Port | 1 x RJ-45 |
| Connectivity Technology | Wired |
| Supported Data Link Protocols | Gigabit Ethernet, 10 Gigabit Ethernet, 25 Gigabit Ethernet, 40 Gigabit Ethernet, 100 Gigabit Ethernet |
| Jumbo Frame Support | 9216 bytes |
Physical & Environmental
| Width | 17.4 in |
| Depth | 21.7 in |
| Height | 1.7 in |
| Weight | 24.69 lbs |
| Minimum Operating Temperature | 32 °F |
| Maximum Operating Temperature | 104 °F |
| Humidity Operating Range | 5 - 95% (non-condensing) |
Cloud Management & Licensing
| Remote Management Protocols | SNMP, SNMP v3, SSH, OAM, JSON, YANG |
| Zero Touch Provisioning (ZTP) | Yes |
| Supported Management Features | Secure management via SSH, SNMP v3, YANG, JSON APIs, web GUI |
Layer 2 / Layer 3 Features
| Routing Protocols Supported | IS-IS, BGP, VRRP, OSPFv2, OSPFv3, ECMP, IS-ISv6, MPLS, BFD |
| Switching Features | Layer 2 switching, Layer 3 switching, L3VPN |
| Quality of Service | High QoS (HQoS) |
| Multicast Support | Yes |
| Forwarding Information Base (FIB) | 2 million entries |
| Time Synchronization | PTP, SyncE |