Allied Telesis AT-X550-18XSQ-10 – 16-Port SFP+ Stackable Switch with 40G Uplinks

Product Overview

The Allied Telesis AT-X550-18XSQ-10 is an Allied Telesis x550 SFP+ stackable switch built for 10 Gigabit fiber aggregation at the campus distribution and data center access layers. With 16 x 1G/10G SFP+ ports and 2 x 40G QSFP uplinks, this Layer 3 switch delivers high-density fiber connectivity for environments requiring optical isolation or extended reach. Long-tail keywords: 10G SFP+ stackable Layer 3 switch with QSFP uplinks, Allied Telesis x550 fiber aggregation switch.

Product Description

The AT-X550-18XSQ-10 is the all-fiber counterpart to the x550-18XTQ, delivering 16 x 1G/10G SFP+ access ports and 2 x 40G QSFP uplink/stacking ports in a 1U rack form factor. Where the XTQ model leverages existing copper Cat6A infrastructure, the XSQ model is optimized for fiber-first environments: data center rows with structured fiber trays, campus buildings wired with single-mode or multi-mode fiber, and any deployment requiring electrical isolation between switch domains. The SFP+ ports accept standard 10GBase-SR, 10GBase-LR, and 1GbE SFP transceivers, providing maximum flexibility across short- and long-reach fiber runs. Both QSFP ports can operate as 40G uplinks to a core switch or as VCStack inter-unit links, enabling multiple x550-18XSQ units to form a single logical switch with unified management. AlliedWare Plus provides the full Layer 3 feature set including OSPF, BGP4, IPv6, VLAN ACLs, and Quality of Service for traffic prioritization across converged networks. EPSRing and G.8032 Ethernet Ring Protection deliver sub-50ms failover for ring-based campus fiber topologies. The switch is TUV certified for safety and runs on a built-in fixed power supply with a compact 1U footprint. OpenFlow v1.3 support makes the XSQ SDN-ready for integration with network controllers in programmable infrastructure deployments. Order the AT-X550-18XSQ-10 from Creation Networks, your authorized Allied Telesis reseller.

Key Features

• 16 x 1G/10G SFP+ Ports — All-fiber access ports accept 10GBase-SR, 10GBase-LR, and 1GbE SFP transceivers for flexible short- and long-reach deployments.
• 2 x 40G QSFP Uplinks — Dual 40 Gigabit QSFP ports provide high-bandwidth uplinks or VCStack inter-unit links for scalable stacking topologies.
• Layer 3 Switching — Full Layer 3 routing with OSPF, BGP4, static routing, and IPv6 eliminates the need for a separate router at the distribution tier.
• VCStack Stacking — Multiple x550-18XSQ units stack via QSFP ports into a single logical device, eliminating single points of failure and simplifying management.
• AlliedWare Plus OS — Enterprise-class operating system with CLI, SNMP v1/v2c/v3, SSH, Web GUI, VLAN ACLs, QoS, and sFlow support.
• OpenFlow v1.3 (SDN-ready) — Integrates with SDN controllers for programmable traffic forwarding and centralized network control.
• sFlow Monitoring — Embedded sFlow agent enables real-time traffic sampling and performance analysis across the switch fabric.
• EPSRing & G.8032 Ring Protection — Provides sub-50ms ring failover for resilient fiber campus and building distribution topologies.
• AMF (Autonomous Management Framework) — Enables zero-touch provisioning, automated backups, and plug-and-play node replacement across an entire AMF network domain.
• TUV Certified — Holds TUV safety certification for deployment in commercial and industrial environments.
• 1U Rack-Mountable — Compact 1U chassis with fixed internal power supply fits standard 19" rack enclosures in data closets and data centers.

Typical Applications

• Campus distribution layer aggregating fiber access switches at 10G/40G
• Data center access layer connecting 10G fiber servers or storage
• Enterprise building wiring closets with structured fiber cabling
• Inter-building fiber backbone aggregation with 40G QSFP uplinks
• Resilient ring-based fiber campus topologies with EPSRing protection
• SDN-enabled network segments requiring OpenFlow programmability

Technical Specifications

Frequently Asked Questions

Q: Is the AT-X550-18XSQ-10 compatible with other Allied Telesis x550 switches in a stack?

Yes. The AT-X550-18XSQ-10 supports VCStack via its QSFP ports. Multiple x550 units can stack together as a single logical device with no single point of failure and shared management.

Q: Can the AT-X550-18XSQ-10 and AT-X550-18XTQ-10 be mixed in the same VCStack?

Allied Telesis supports mixed-model VCStack configurations within the x550 Series. Consult the AlliedWare Plus release notes for the specific firmware version in use to confirm inter-model stacking compatibility.

Q: What SFP+ transceivers are compatible with the 16 data ports?

The SFP+ ports accept standard 10GBase-SR (multi-mode fiber), 10GBase-LR (single-mode fiber), and 1GbE SFP optics. Allied Telesis recommends Allied Telesis-branded transceivers for full compatibility and technical support.

Q: How is the switch managed?

The switch supports CLI via SSH/Telnet, SNMP v1/v2c/v3, Web GUI, sFlow, and Allied Telesis AMF for centralized automated management across an entire network domain.

Q: Does the x550-18XSQ support Layer 3 routing?

Yes. The switch provides full Layer 3 routing including OSPF, BGP4, RIPv1/v2, static routes, and a complete IPv6 feature set via AlliedWare Plus.

Q: What ring protection protocols are supported?

The switch supports Allied Telesis EPSRing and IEEE G.8032 Ethernet Ring Protection, delivering sub-50ms failover for ring-based campus and building fiber topologies.

Q: What is the warranty on the AT-X550-18XSQ-10?

Allied Telesis provides a limited lifetime hardware warranty on x550 Series switches. Contact Creation Networks for warranty terms and support options.

Q: Where can I purchase the AT-X550-18XSQ-10?

The AT-X550-18XSQ-10 is available from Creation Networks, an authorized Allied Telesis reseller with expert pre-sales support and competitive pricing.