Product Type | Router |
Form Factor | Front to back airflow rack-mountable - 1U |
Processor | 1.9 GHz |
RAM | 32 GB |
Internal Storage | 128 GB |
Throughput | 900 Gbps |
Forwarding Information Base (FIB) Entries | 2 million |
Jumbo Frame Support | 9216 bytes |
Power Supply | Internal dual redundant power supply (2 installed / 2 max) |
Power Consumption | 400 Watt |
Cisco NCS55A1 Router with 24x1/10G, 6x100G Ports & MACsec



Key Benefits

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- High port-density and mix of SFP and QSFP interfaces allow for scalable expansion in data centers and service provider networks
- MACsec and robust protocol support ensure secure, standards-compliant deployment in environments requiring data integrity and uptime
- Runs stable Cisco IOS XR 7.2.1 OS with extensive enterprise features and remote manageability, reducing operational overhead
Product Overview
The Cisco NCS55A1 is a compact, high-throughput edge router purpose-built for hyperscale, metro, and data center edge deployments. Housed in a 1U rack-mountable chassis with front-to-back airflow, this platform supports a potent interface mix including 24x 1/10G SFP, 24x 10/25G SFP28, and 6x 100G QSFP28 ports. With MACsec encryption, enterprises can secure data at line speeds without compromise. Featuring a 1.9 GHz CPU, 32 GB of RAM, and 128 GB of internal storage, the NCS55A1 ensures consistent performance under demanding workloads, maintaining up to 900 Gbps throughput and supporting 2 million FIB entries for scalable routing efficiency.
To meet complex networking requirements, this router supports VRRP, MPLS, BGP, OSPFv2/v3, IS-IS, and advanced features such as Layer 2/3 switching, SyncE, ZTP, HQoS, and more. Additional capabilities include jumbo frame support up to 9216 bytes, hardware redundancy with dual power supplies and 1+1 fan modules, and compliance with major standards like IEEE 802.1Q and RoHS. Remote management is simplified with SNMP, JSON, YANG, SSH, and TACACS+. Designed to run Cisco IOS XR 7.2.1, this router is a robust option for secure, flexible, and high-capacity network routing in high-density environments.
Specifications
Product Overview
Wireless Features
Wi-Fi Support |
Compliance & Origin
Country of Origin | China / United States |
TAA Compliant | 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, AS/NZS 60950-1, ICES-003 Class A, FCC CFR47 Part 15, UL 60950-1, RoHS, GB 4943, Directive 2004/108/EC, EN 60950-1, IEC 60950-1, 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, EN 300 386, KN 61000-4 |
Advanced Security Features
Encryption | MACsec |
Routing Protocols Supported | IS-IS, BGP, VRRP, OSPFv2, OSPFv3, ECMP, IS-ISv6, MPLS, BFD |
Security Features | AAA, TACACS+, MACsec line-rate encryption |
Interfaces
Total Number of Ports | 54 |
1/10/25G SFP28 Ports | 24 |
1/10G SFP Ports | 24 |
40G/100G QSFP28 Ports | 6 |
Management Port | 1 x RJ-45 |
Console Port | 1 x RJ-45 |
Data Link Protocols Supported | Gigabit Ethernet, 10 Gigabit Ethernet, 25 Gigabit Ethernet, 40 Gigabit Ethernet, 100 Gigabit Ethernet |
Physical & Environmental
Dimensions (W x D x H) | 17.4 in x 21.7 in x 1.7 in |
Weight | 24.69 lbs |
Minimum Operating Temperature | 32 °F |
Maximum Operating Temperature | 104 °F |
Operating Humidity Range | 5% to 95% (non-condensing) |
Cooling | 1+1 Fan Modules |
Cloud Management & Licensing
Operating System | Cisco IOS XR 7.2.1 |
Remote Management Protocols | SNMP, SNMP v3, SSH, OAM, JSON, YANG |
Authentication Methods | SSH, TACACS+ |
Additional Features
High Availability | Redundant power and fans |
Supported Features | Layer 2/3 switching, RPL, MIB, PTP, DSCP, LDP, iPXE, HQoS, ToR, L3VPN, SyncE, ZTP, IP unicast, EFP |
Warranty | 1-year limited hardware warranty with 10-day advance replacement |