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FLS-A901-4S=
Cisco ASR 901 4 Port SFP GE Upgrade - Physical
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FLS-A901-4S= is an enterprise-grade fixed router designed with a robust architecture that optimizes power efficiency through redundant AC/DC power options while providing versatile WAN connectivity via four dedicated SFP ports and supporting industry-standard 10/100/1000 Ethernet technology on its LAN interface. The device is engineered to deliver integrated services including voice, video, and WAN optimization, and it offers modular capabilities to expand interface functionality if required.
FLS-A901-4S= features advanced VPN support with IPSec and SSL VPN protocols to secure remote access and ensure data integrity, while its throughput capacity of up to 1 Gbps and built-in high availability support deliver reliable performance and redundancy. Ideal for enterprise use cases, this router meets high standards of routing protocol compatibility and comprehensive firewall security, providing an optimal solution for mission-critical network deployments.
FLS-A901-4S= price is $1,098.00, a 45.3% saving from the Cisco list price of $2,007.00. FLS-A901-4S= is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for FLS-A901-4S= for additional pricing. Browse the full Cisco Router Asr 900 series or explore all Cisco products.
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 FLS-A901-4S= |  A901-4C-F-D= |  A901-12C-F-D |  A903-RSP1A-55 |  A901-4C-FT-D= | |
|---|---|---|---|---|---|
| 5G Support | No | No | No | No | No |
| Architecture | Fixed | Modular | Modular | Modular | Fixed |
| Broadband | Fiber Optic | Fiber Optic | N/A | Fiber Optic / DSL | Fiber Optic |
| Built-in Security Features | Firewall / Intrusion Prevention / Malware Protection | Firewall / Intrusion Prevention / Malware Protection | Firewall, Intrusion Prevention | Firewall / Intrusion Prevention | Firewall, Intrusion Prevention |
| Compliance Standards | FCC / CE / RoHS | IEEE 802.3, FCC, CE | FCC, CE | FCC, CE, RoHS | FCC, CE |
| Connectivity Type | Wired | Wired | Wired | Wired | Wired |
| Depth | 15 inches | 18 inches | 16 inches | 18 inches | 16 inches |
| Device Type | Router | Router | Router | Router | Router |
| EMC | N/A | CISPR 22 | N/A | N/A | N/A |
| Ethernet Technology | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 |
| Expansion Slots | SFP+ | NIM | NIM | NIM / SFP+ | SFP+ |
| Features | VPN / Firewall / IPv6 Compatible / QoS | Mesh / VPN / VoIP / IPv6 Compatible / Firewall / POE / MPLS / LER / Syslog / WRED / CBWFQ | VPN, VoIP, IPv6 Compatible, Firewall | VPN / IPv6 Compatible / Firewall | VPN, Firewall, Redundancy, High Availability |
| Firewall Features | Yes | Yes | Yes | Yes | Yes |
| Flash Memory | 512 MB | 512 MB | 512 MB | 512 MB | 512 MB |
| Form Factor | Rack-mount | Rack-mount | Rack-mount | Rack-mount | Rack-mount |
| Height | 1.75 inches | 1.75 inches | 4 inches | 2 inches | 1.75 inches |
| High Availability Support | Supported | Supported | Supported | Supported | Supported |
| Integrated Services | Voice / Video / WAN Optimization | Voice / Video / WAN Optimization | Voice, WAN Optimization | Voice / Video | Voice, Video |
| Interface Ports | SFP | RJ-45 / SFP | RJ-45, SFP | RJ-45 / SFP | RJ-45, SFP |
| LAN Ports | N/A | 8 LAN Ports | 8 LAN Ports | 4 LAN Ports | 4 LAN Ports |
| Management | Managed | Managed | Managed | Managed | Managed |
| Memory | 1 GB | 4 GB | 4 GB | 4 GB | 2 GB |
| Modular Slots Available | N/A | 3+ Slots | 3+ Slots | 3+ Slots | N/A |
| Network Protocols | IPv4 / IPv6 | IPv4, IPv6, TCP/IP, UDP | IPv4, IPv6 | IPv4, IPv6 | IPv4, IPv6 |
| Power | 65 Watt | 300W | 350 Watt | 350 Watt | 150W |
| Power Source | AC Power Supply / DC Power Supply / Redundant | AC Power Supply / DC Power Supply / Redundant | AC Power Supply / Redundant | AC Power Supply / Redundant | AC Power Supply / Redundant |
| Product Name | FLS-A901-4S= | A901-4C-F-D= | A901-12C-F-D Enterprise Router | A903-RSP1A-55 | A901-4C-FT-D= |
| Product Type | Enterprise Router | Enterprise Router | Enterprise Router | Enterprise Router | Enterprise Router |
| QoS Features | Supported | Supported | Supported | Supported | Supported |
| Remote Management | SSH / Telnet / SNMP | CLI, SNMP, WebUI | SNMP, CLI, Web GUI | Telnet, SSH, SNMP | HTTPS, SNMP |
| Routing Protocols | OSPF / BGP / RIP / Static Routing | OSPF / BGP / EIGRP / MPLS / IS-IS / RIP / Static Routing | OSPF / BGP / EIGRP / Static Routing | OSPF / BGP / EIGRP / Static Routing | OSPF / BGP / Static Routing |
| Safety | N/A | UL Recognized | N/A | N/A | N/A |
| Speed/Capacity | Gigabit | Gigabit | Gigabit | Gigabit | Gigabit |
| Stacking Capability | No | Yes | Yes | Yes | No |
| Telecom | N/A | TIA/EIA | N/A | N/A | N/A |
| Throughput Capacity | 1 Gbps | 10 Gbps | 4 Gbps | 10 Gbps | 1 Gbps |
| Use Case | Enterprise | Enterprise | Enterprise | Enterprise / Business | Enterprise |
| VPN Support | IPSec / SSL VPN | IPSec / SSL VPN / GRE / DMVPN / FlexVPN | IPSec / SSL VPN / DMVPN | IPSec / SSL VPN / DMVPN | IPSec / SSL VPN / GRE / DMVPN |
| WAN Configuration | Dual WAN | Dual WAN | Dual WAN | Dual WAN | Dual WAN |
| WAN Ports | 4 WAN | 2 WAN | 2 WAN | 2 WAN | 2 WAN |
| Weight | 12 lbs | 15 lbs | 25 lbs | 8 lbs | 15 lbs |
| Wi-Fi Standard | N/A | N/A | N/A | N/A | N/A |
| Width | 17.5 inches | 17.5 inches | 18 inches | 17 inches | 17 inches |
| Wireless Support | No | No | No | No | No |
Solid physical port upgrade. The 4 SFP GE ports are built to last and provide the fiber flexibility we need for our remote cell site deployments. Reliable.
A professional-grade hardware upgrade. The SFP ports integrated perfectly with our ASR 901, delivering consistent Gigabit speeds and excellent signal integrity across all ports.
High build quality and easy installation. This physical upgrade has allowed us to extend our fiber reach significantly. Reliability has been 100% since day one.
Steady and dependable. The ASR 901 SFP upgrade is the best way to add high-speed fiber connectivity to existing hardware. Very satisfied with the hardware quality.
High performance and robust. These ports handle traffic effortlessly. A very solid investment for any service provider looking to modernize their access network infrastructure.