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ASR5K-011G2-SX-K9
GLC2 1-Port 1xGbE Line Card - 2nd Gen w/SX MM SFP
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ASR5K-011G2-SX-K9 is a high-performance Ethernet module designed for integration with Cisco modular routers, delivering reliable 1Gbps connectivity via SFP-based fiber interfaces. This module is optimized for enterprise networking environments where robust TCP/IP communications are essential, providing secure and efficient data transfer in compact, modular form factor installations.
ASR5K-011G2-SX-K9 is engineered for easy installation within Cisco’s chassis-based platforms, ensuring seamless integration and high-speed performance in data centers and network edge deployments. Its support for industry-standard protocols and features such as auto-negotiation, jumbo frames, and QoS makes it ideal for upgrading server network interfaces and expanding overall network capacity.
ASR5K-011G2-SX-K9 price for new stock is $6,694.80, a 44.2% saving from the Cisco list price of $12,000.00. ASR5K-011G2-SX-K9 refurb price is $5,925.15. ASR5K-011G2-SX-K9 is in stock and available for free next-day delivery. (terms applied)
Request bulk order quote for ASR5K-011G2-SX-K9 for additional pricing. Browse the full Cisco Router Asr 5000 series or explore all Cisco products.
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| ASR5K-011G2-SX-K9 |  N9K-C9516-FM |  A9K-8T-E |  VS-S2T-10G-XL |  IEM-3300-8S | |
|---|---|---|---|---|---|
| Form Factor | Modular | Modular | Modular | PCIe | DIN Rail Mount |
| Operating Temperature | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C | -40°C to 60°C (sealed enclosure) / -40°C to 70°C (vented enclosure) |
Every unit is authentic, sourced through trusted and authorised channels, and serial-verified on request. Genuine networking and IT hardware, guaranteed, or your money back.
New products are backed by up to 3 years of extended warranty, and certified refurbished units by up to 90 days, for dependable protection on every order. The exact term is confirmed on your quote, order confirmation and invoice.
If a unit ever falls short, our streamlined RMA process gets a replacement to you fast, with advance replacement available to keep your network running. No jargon, no runaround.
Every device is inspected, bench-tested, and firmware-verified, with configurations wiped before dispatch. Additional testing can be arranged to confirm full working condition on request.
Our specialists assist with compatibility, configuration, licensing, and installation, before and after you buy. Real hardware expertise, whenever you need it.
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Reviewed on the 19 August 2024
Reliable and versatile. This 1-port card is perfect for our internal backbone links. The performance is steady and the build quality is truly excellent.
Reviewed on the 24 September 2018
Essential for high-stakes infrastructure. The card provides the robust short-range fiber connectivity required for our secure core. Extremely satisfied with its consistent performance.
Reviewed on the 22 June 2020
Clever and adaptable. This 2nd Gen card maximizes our chassis efficiency. It's a very smart investment for any growing datacenter looking for reliable GE ports.
Reviewed on the 6 October 2021
A most elementary choice for short-range fiber. The GLC2 SX card handles Gigabit traffic with logical precision and professional-grade stability. Highly recommended for datacenters.
Reviewed on the 14 March 2018
Masterful throughput. The data plane efficiency of this SX card is impressive, handling high-speed services without any measurable latency. A top-tier component for any ISP.
The GLC2 1-Port 1xGbE Line Card – 2nd Gen w/SX MM SFP (ASR5K-011G2-SX-K9) is a high-performance Cisco ASR 5000 Series line card providing a single 1 GbE port with an SX multimode fiber SFP interface for carrier-grade edge deployments.
The ASR5K-011G2-SX-K9 is compatible with Cisco ASR 5000 Series chassis, including ASR 5001, ASR 5002, ASR 5505 and ASR 5512 platforms, when running Cisco IOS XE 16.6.1 or later.
The SX MM SFP module on the ASR5K-011G2-SX-K9 supports 50/125 µm and 62.5/125 µm multimode fiber for optimized short-reach connections up to 550 meters.
The ASR5K-011G2-SX-K9 delivers a single 1 Gbps full-duplex throughput, ideal for aggregated subscriber or backhaul links.
Using 50 µm multimode fiber, the SX MM SFP supports up to 550 meters; on 62.5 µm fiber, it supports up to 275 meters per IEEE 802.3z specifications.
Yes. The ASR5K-011G2-SX-K9 supports hot-swappable insertion and removal without disruption to traffic when used in a redundant supervisor configuration.
Power down or enter redundant supervisor mode, slide the ASR5K-011G2-SX-K9 into an available line-card slot until it clicks, then power up or revert to active supervisor.
The 2nd Gen ASR5K-011G2-SX-K9 offers improved forwarding capacity, enhanced energy efficiency, updated FPGA for newer IOS XE features, and extended optical link diagnostics.
The ASR5K-011G2-SX-K9 operates reliably from 0 °C to 40 °C (32 °F to 104 °F) in standard ambient conditions per Cisco environmental specifications.
Yes. The ASR5K-011G2-SX-K9 is fully RoHS-compliant, meeting all European Union directives on hazardous substances.
Cisco provides a lifetime warranty covering defects in materials and workmanship, plus optional SMARTnet support for 24/7 access to software updates, hardware replacement and technical assistance.
Yes. The SX MM SFP supports Digital Optical Monitoring (DOM), allowing real-time monitoring of optical power, temperature and transceiver status via SNMP or CLI.
Enter interface configuration mode with 'interface GigabitEthernet slot/port', assign IP or bridge domain settings, enable the port with 'no shutdown', and verify with 'show interfaces'.
The SX MM SFP port uses a standard LC duplex connector, ensuring compatibility with common multimode fiber patch cords.
Genuine Cisco ASR5K-011G2-SX-K9 line cards are available through authorized Cisco resellers, distribution partners and the Cisco Commerce Workspace online portal.
Verify fiber polarity and cleanliness, confirm multimode fiber type and distance limits, check 'show interfaces transceiver detail' for DOM diagnostics, and replace the module if parameters exceed thresholds.
The official Cisco part number for the 2nd Gen SX MM SFP line card is ASR5K-011G2-SX-K9, also referenced as GLC2-1-SX in Cisco documentation.
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