Arista 7250QX Series
64xQSFP+ switch, front-to-rear airflow and dual 1100W AC power supplies
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64xQSFP+ switch, rear-to-front airflow and dual 1100W AC power supplies
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64xQSFP+ switch, no fans, no psu (requires fans and psu)
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64xQSFP+ switch, SSD, no fans, no psu (requires fans and psu)
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Overview:
The Arista 7250QX-64 is a key component of the Arista portfolio of data center switches. The Arista 7250QX-64 fixed configuration switch shares common features with the Arista 7050 and 7300 X-Series of purpose built 10/40GbE switches, with wire speed layer 2/3/4 performance combined with low latency and advanced features for software defined cloud networking.
Increased adoption of 10 Gigabit Ethernet servers coupled with applications using higher bandwidth is accelerating the need for dense 10 and 40 Gigabit Ethernet switching. The 7250X Series supports a flexible combination of 10G and 40G in a compact form factor that allows customers to design both large leaf and spine networks to accommodate both east-west traffic patterns and support the requirement for low latency and power efficiency in dense servers farms.
With 64 QSFP+ ports the 7250QX-64 is a dense 40GbE system that can support a flexible combination of up to 64x 40GbE or 256 x 10GbE of wire speed performance in a 2RU system. The Arista 7250QX-64 combines low latency, and a shared packet buffer pool of 12MB per group of ports that is allocated dynamically to ports that are congested.
Combining 40GbE density and industry leading power efficiency with typical power consumption under 14W per 40GbE port the 7250QX-64 is ideal for both middle or end of row leaf or collapsed spine tiers with airflow choices for back to front, or front to back. An optional built-in SSD supports advanced logging, data captures and other services directly on the switch.
Combined with Arista EOS the 7250QX-64 delivers advanced features for big data, cloud, virtualized and traditional designs.
Arista EOS
The Arista 7250QX-64 runs the same Arista EOS software as all Arista products, simplifying network administration. Arista EOS is a modular switch operating system with a unique state sharing architecture that cleanly separates switch state from protocol processing and application logic. Built on top of a standard Linux kernel, all EOS processes run in their own protected memory space and exchange state through an in-memory database. This multi-process state sharing architecture provides the foundation for in-service-software updates and self-healing resiliency.
With Arista EOS, advanced monitoring and automation capabilities such as Zero Touch Provisioning, VMTracer and Linux based tools can be run natively on the switch with the powerful x86 CPU subsystem.
Product Highlights
Performance
Data Center Optimized Design
Cloud Networking Ready
Resilient Control Plane
|
Built-in Storage
Advanced Provisioning & Monitoring
Arista Extensible Operating System
|
Benefits:
High Availability
The Arista 7250QX series switches were designed for high availability from both a software and hardware perspective. Key high availability features include:
- 1+1 hot-swappable power supplies and four N+1 hot-swap fans
- Color coded PSU’s and fans - common to Arista 2RU devices
- Live software patching
- Self healing software with Stateful Fault Repair (SFR)
- Up to 64 10GbE or 40GbE ports per link aggregation group (LAG)
- Multi-chassis LAG for active/active L2 multipathing
- 64-way ECMP routing for load balancing and redundancy
Dynamic Bufer Allocation
In cut-through mode, the Arista 7250X series switches forward packets with a latency of less than 2 microseconds. Upon congestion, the packets are buffered in shared packet memory that has a total size of 48 Mbytes. Unlike other architectures that have fixed per-port packet memory, the 7250X Series use Dynamic Buffer Allocation (DBA) to allocate up to 6MB of packet memory to a single port for lossless forwarding.
Scaling Data Center Performance
The Arista 7250X series delivers line rate switching at layer 2 and layer 3 to enable dramatically faster and simpler network designs for data centers that dramatically lowers the network capital and operational expenses. When used in conjunction with the Arista 7000 series of fixed and modular switches it allows networks to scale to over 200,000 10G servers in a low-latency two-tier network that provides predictable and consistent application performance. The flexibility of the L2 and L3 multi-path design options combined with support for open standards provides maximum flexibility, scalability and network wide virtualization. Arista EOS advanced features provide control and visibility with single point of management.
Maximum Flexibility for Scale Out Network Designs
Scale out network designs enable solutions to start small and evolve over time. A simple two-way design can grow as wide as 64-way without significant changes to the architecture. The 7250QX include enhancements that allow for flexible scale-out designs:
- 64-way ECMP and 64-way MLAG to provide scalable designs and balance traffic evenly across large scale 2 tier leaf-spine designs
- Flow based FDLB architecture to balance large flows and dynamic packet buffering to absorb congestion from microbursts
- Custom hash algorithms for efficient hashing, persistent hashing and custom lookups for tunneled protocols.
- Flexible allocation of L2 and L3 forwarding table resources for more design choice
- Wide choice of 10G/40G optics and cables for single port multi-speed flexibility
- VXLAN routing, bridging and gateway for physical to virtualization communication to enable next generation data center designs
- DANZ, sFlow and multi-port mirroring to detect micro-burst congestion and provide network wide visibility and monitoring
Software Defined Networking
Arista Software Defined Cloud Networking (SDCN), combines the principles that have made cloud computing the unstoppable force that it is: automation, self service provisioning, and linear scaling of both performance and economics coupled with the trend in Software Defined Networking that delivers: network virtualization, custom programmability, simplified architectures, and lower capital expenditure. This combination creates a best-in-class software foundation for maximizing the value of the network to both the enterprise and service provider data center. A new architecture for the most mission-critical location within the IT infrastructure that simplifies management and provisioning, speeds up service delivery, lowers costs and creates opportunities for competitive differentiation, while putting control and visibility back in the hands of the network and systems administrators.
Enhanced Features for High Performance Networks
The Arista 7250QX delivers a suite of advanced traffic control and monitoring features to improve the agility of modern high performance environments, with solutions for data monitoring, precise timing and next-generation virtualization.
Smart System Upgrade
Smart System Upgrade is a network application designed to address one of the most complicated and challenging tasks facing data center administrators - network infrastructure maintenance. Changes to the underlying network infrastructure can affect large numbers of devices and cause significant outages. SSU provides a fully customizable suite of features that tightly couples data center infrastructure to technology partners allowing for intelligent insertion and removal, programmable updates to software releases and open integration with application and infrastructure elements.
Precise Data Analysis
Arista Latency Analyzer (LANZ) is an integrated feature of EOS. LANZ provides precise real-time monitoring of micro-burst and congestion events before they impact applications, with the ability to identify the sources and capture affected traffic for analysis.
Virtualization
Supporting next-generation virtualized data centers requires tight integration with orchestration tools and emerging encapsulation technologies such as VXLAN. The 7250QX builds on the valuable tools already provided by the Arista VM Tracer suite to integrate directly into encapsulated environments. Offering a wire-speed gateway between VXLAN and traditional L2/3 environments, the 7250QX makes integration of non-VXLAN aware devices including servers, firewalls and load-balancers seamless and provides the ability to leverage VXLAN as a standards based L2 extension technology for non-MPLS environments.
Advanced Event Management (AEM)
Simplifying the overall operations, AEM provides the tools to customize alerts and actions. AEM is a powerful and flexible set of tools to automate tasks and customize the behavior of EOS and the operation of the overall data center switching infrastructure. AEM allows operators to fully utilize the intelligence within EOS to respond to real-time events, automate routine tasks, and automate actions based on changing network conditions.
Network Address Translation (NAT) *
The Arista 7250QX includes support for line rate NAT with no impact on performance or scalability for environments where address translation is essential to resolve addressing challenges such as masking internal address and translating overlapping ranges to avoid conflicts without penalty.
Features:
Layer 2 Features
Layer 3 Features
Advanced Monitoring and Provisioning
Virtualization Support
Security Features
Quality of Service (QoS) Features
|
Network Management
Extensibility
Standards Compliance
SNMP MIBs
|
* Not currently supported in EOS
| Table Sizes | ||
| STP Instances | 64 (MST)/510 (RPVST+) | |
| IGMP Groups | 288K, with 8K unique groups | |
| ACLs | 4K to 16K | |
| Egress ACLs | 1K to 4K | |
| ECMP | 64-way, 1K groups | |
| Base Mode | UFT Modes | |
| MAC Addresses | 32K | 288K |
| IPv4 Hosts | 32K | 208K |
| IPv4 Routes - Unicast | 16K | 144K * |
| IPv4 Routes - Multicast | 16K | 104K * |
| IPv6 Hosts | 16K | 104K |
| IPv6 Routes - Unicast | 8K | 77K * |
| IPv6 Routes - Multicast | 4K | No Change |
Maximum values dependent on shared resources in some cases
* Not currently supported in EOS
Specifications:
| Environmental Characteristics | |
|---|---|
| Operating Temperature | 0 to 40°C (32 to 104°F) |
| Storage Temperature | -25 to 70°C (-13 to 158°F) |
| Relative Humidity | 5 to 95% |
| Operating Altitude | 0 to 10,000 ft, (0-3,000m) |
| Standards Compliance | |
|---|---|
| EMI | FCC Part 15 Class A ICES-003 Class A VCCI Class A |
| Safety | IEC/EN/UL/CSA 60950 CE, uTUVc Mark |
| Other | ROHS-2 Compliant |
| Supported Optics and Cables | |
|---|---|
| Interface Type | QSFP+ ports |
| 10GBASE-CR | 0.5m-5m QSFP+ to 4x SFP+ |
| 40GBASE-CR4 | 0.5m to 5m QSFP+ to QSFP+ |
| 40G-UNIV | 150m (OM3) / 150m (OM4) 500m (SM) |
| AOC-40G-Q-Q | 3m to 100m |
| 40GBASE-SR4 | 100m (OM3) /150m (OM4) |
| 40GBASE-XSR4 | 300m (OM3) /450m (OM4) |
| 40G-PLRL4 | 1km (1km 4x10G LR/LRL) |
| 40G-PLR4 | 10km (10km 4x10G LR/LRL) |
| 40G-LRL4 | 1km |
| 40GBASE-LR4 | 10km |
| Model Comparison | |
|---|---|
| 7250QX-64 | |
| Ports | 64 x QSFP+ |
| Total 40GbE Ports | 64 |
| Total 10GbE Ports | 256 |
| Throughput | 5Tbps |
| Packets/Second | 3840 Mpps |
| Latency | 550 to 1800 ns |
| CPU | Quad-Core x86 |
| System Memory | 8 Gigabytes |
| Flash Storage Memory | 4 Gigabytes |
| Packet Bufer Memory | 48MB (Dynamic Buffer Allocation) |
| SSD Storage (optional) | 100 Gigabytes |
| 10/100/1000 Mgmt Ports | 2 |
| RS-232 Serial Ports | 1 (RJ-45) |
| USB Ports | 1 |
| Hot-swap Power Supplies | 2 (1+1) |
| Hot-swappable Fans | 4 (N+1 redundant) |
| Reversible Airfow Option | Yes |
| Typical / Maximum Power * | 622W / 1200W |
| Size (WxHxD) | 19 x 3.5 x 21.8 inches (44.5 x 8.8 x 55.3cm) |
| Weight | 42.3 lbs (19.2kg) |
* Typical power consumption measured at 25C ambient with 50% load
Note Performance rated over operation with average packets larger than 200 bytes.
Power Supply Specifcations
| Switch Series | 7250QX-64 | |
|---|---|---|
| Power Supply Model | PWR-1100AC | PWR-1100DC * |
| Input Voltage | 200-240AC | 40-72V DC |
| Typical Input Current | 6.5 - 5.5A | 16 - 29A 26.6A at -48V |
| Input Frequency | 50/60Hz | DC |
| Input Connector | IEC 320-C13 | AWG #10-3 |
| Effciency (Typical) | 93% Platinum | - |
* Not currently supported in EOS
Documentation:
Download the Arista 7250QX Series Datasheet (PDF).
64xQSFP+ switch, front-to-rear airflow and dual 1100W AC power supplies
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64xQSFP+ switch, rear-to-front airflow and dual 1100W AC power supplies
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64xQSFP+ switch, no fans, no psu (requires fans and psu)
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64xQSFP+ switch, SSD, no fans, no psu (requires fans and psu)
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144-256 port 10G (BGP, OSPF, ISIS, PIM, NAT) - 7260QX-64
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144-256 port 10G (VMTracer and VXLAN) - 7260QX-64
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144-256 port 10G (ZTP, LANZ, TapAgg, OpenFlow) - 7260QX-64
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