Supported Optics for Arista 7250QX-64

Supported Optics for Arista 7250QX-64

Posted on by FS.COM

In 10G/40G data center, switches must not only provide high performance, scalability and density, but also should meet the requirements of system availability, reliability or functionality. The Arista 7250QX-64 is that kind of switch with advanced features. This article is going to introduce its architecture and its connecting solution.

Overview of Arista 7250QX-64

The Arista 7250QX-64 switch is one of Arista 7250X series which represent performance, scale and power efficiency in 2RU data center switches. As the adoption of 10G servers keeps increasing, the need for flexible, dense 10GbE/40GbE solutions is extremely urgent. The Arista 7250X is designed to build 10/40GbE data center in the configuration of 2U with 64 QSFP+ interfaces in a new category called spline (combined leaf and spine). These provide high density 1/10/40G in compact and energy efficient form factors, optimized airflow targeted for deployment as middle-of-row/end-of-row in server racks with wire speed layer 2 and layer 3 features. The Arista 7250X series greatly improve on the sides of performance, scalability, density and other features.

The Arista 7250QX-64 is a compact 2RU switch with 64 QSFP+ interfaces supporting up to 64x40GbE. With the feature of flexible 10G/40G options, each of QSFP+ port can be used as 4x10GbE for a 256x10GbE system combined the use of optical transceivers and cables of copper cables. Figure 1 shows Arista 7250QX-64 switch’s front view of 64 QSFP+ ports supporting 64x 40GbE or 256x 10GbE and rear view of 4x(N+1) fan modules, 1+1 hot-swappable power supplies, color coded PSU (program storage unit) and fans. It’s used in 10GbE and 40GbE data center offering high performance, low latency and scalable system powered by Arista EOS, the worlds most advanced network operating system.

Arista -7250QX-64

Figure 1. Front view and rear view of Arista 7250QX-64

Scalability and Flexibility

Since the Arista 7250QX-64 delivers line rate switching at layer 2 and layer 3, it’s helpful to save the network capital and operational costs for data centers by the faster and simpler network designs. When used with the combination of the Arista 7000 series of fixed and modular switches, the networks can scale to over 200,000 10G servers in a low-latency two-tier network that provides predictable and consistent application performance. The layer 2 and layer 3 multi-path design options provides maximum flexibility, scalability and network wide virtualization.

The Arista 7250QX-64 is ideal for the use of ultra-high density 40GbE switching in a compact fixed form-factor. With the combination of 10G and 40G connection, the switch can realize 40G to 10G migration. As Figure 2 shows, every QSFP+ port can be set as 4x10G. And this network can be achieved with one 40G QSFP+ PLRL4 and four 10G SFP+ transceivers connected by MTP-4LC harness cable directly.

40G-10G-connection

Figure 2. Arista 7250QX-64 40G to 4x10G migration

FS.COM Supported Optics

The Arista 7250QX-64 provides 10G/40G network in the data center combined with optical fiber cables and transceivers. FS.COM offers 40G DAC including copper and optical cable type and QSFP+ optics. For short distances, DAC cables and AOC cables are preferred. For longer distances, fiber cables and QSFP+ transceiver modules are needed. And they are shown in the following tables.

Direct Attach Cables
MFG PART# 40G QSFP+ to 4x10G DAC Breakout Cable
CAB-Q-S-0.5M 0.5m Arista CAB-Q-S-0.5M Compatible 40G QSFP+ to 4x10G SFP+ Passive DAC Breakout Cable
CAB-Q-S-1M 1m Arista CAB-Q-S-1M Compatible 40G QSFP+ to 4x10G SFP+ Passive DAC Breakout Cable
CAB-Q-S-2M 2m Arista CAB-Q-S-2M Compatible 40G QSFP+ to 4x10G SFP+ Passive DAC Breakout Cable
CAB-Q-S-3M 3m Arista CAB-Q-S-3M Compatible 40G QSFP+ to 4x10G SFP+ Passive DAC Breakout Cable
CAB-Q-S-5M 5m Arista CAB-Q-S-5M Compatible 40G QSFP+ to 4x10G SFP+ Passive DAC Breakout Cable
40G QSFP+ to QSFP+ DAC
CAB-Q-Q-0.5M 0.5m Arista Networks CAB-Q-Q-0.5M Compatible 40G QSFP+ Passive DAC Cable
CAB-Q-Q-1M 1m Arista Networks CAB-Q-Q-1M Compatible 40G QSFP+ Passive DAC Cable
CAB-Q-Q-2M 2m Arista Networks CAB-Q-Q-2M Compatible 40G QSFP+ Passive DAC Cable
CAB-Q-Q-3M 3m Arista Networks CAB-Q-Q-3M Compatible 40G QSFP+ Passive DAC Cable
CAB-Q-Q-5M 5m Arista Networks CAB-Q-Q-5M Compatible 40G QSFP+ Passive DAC Cable
CAB-Q-Q-7M 7m Arista Networks CAB-Q-Q-7M Compatible 40G QSFP+ Passive DAC Cable
40G QSFP+ AOC
AOC-Q-Q-40G-3M 3m Arista Networks AOC-Q-Q-40G-3M Compatible 40G QSFP+ Active Optical Cable
AOC-Q-Q-40G-5M 5m Arista Networks AOC-Q-Q-40G-5M Compatible 40G QSFP+ Active Optical Cable
AOC-Q-Q-40G-7M 7m Arista Networks AOC-Q-Q-40G-7M Compatible 40G QSFP+ Active Optical Cable
AOC-Q-Q-40G-10M 10m Arista Networks AOC-Q-Q-40G-10M Compatible 40G QSFP+ Active Optical Cable
AOC-Q-Q-40G-15M 15m Arista Networks AOC-Q-Q-40G-15M Compatible 40G QSFP+ Active Optical Cable
AOC-Q-Q-40G-20M 20m Arista Networks AOC-Q-Q-40G-20M Compatible 40G QSFP+ Active Optical Cable
AOC-Q-Q-40G-25M 25m Arista Networks AOC-Q-Q-40G-25M Compatible 40G QSFP+ Active Optical Cable
AOC-Q-Q-40G-30M 30m Arista Networks AOC-Q-Q-40G-30M Compatible 40G QSFP+ Active Optical Cable
AOC-Q-Q-40G-50M 50m Arista Networks AOC-Q-Q-40G-50M Compatible 40G QSFP+ Active Optical Cable
AOC-Q-Q-40G-75M 75m Arista Networks AOC-Q-Q-40G-75M Compatible 40G QSFP+ Active Optical Cable
AOC-Q-Q-40G-100M 100m Arista Networks AOC-Q-Q-40G-100M Compatible 40G QSFP+ Active Optical Cable
Optical Transceivers
MFG PART# Description Interface Cable type
QSFP-40G-SR4 Arista Compatible 40GBASE-SR4 QSFP+ Transceiver, 850nm, 150m MTP/MPO MMF
QSFP-40G-XSR4 Arista Compatible 40GBASE-XSR4 QSFP+ Transceiver, 850nm, 400m MTP/MPO MMF
QSFP-40G-PLRL4 Arista Compatible 40GBASE-PLRL4 QSFP+ Transceiver, 1310nm, 1km MTP/MPO SMF
QSFP-40G-LRL4 Arista Compatible 40GBASE-LRL4 QSFP+ Transceiver LC duplex MMF
QSFP-40G-PLR4 Arista Compatible 40GBASE-PLR4 QSFP+ Transceiver, 1310nm, 10km MTP/MPO SMF
QSFP-40G-LR4 Arista Compatible 40GBASE-LR4 QSFP+ Transceiver, 1310nm, 10km LC duplex SMF
QSFP-40G-ER4 Arista Compatible 40GBASE-ER4 QSFP+ Transceiver, 1310nm, 40km LC duplex SMF
Conclusion

The Arista 7250QX-64 is a good choice for 10G/40G data center because of its high performance, flexibility and scalability. To create the connection, fiber optics, cables and other cable management tools are needed. Choose a right vendor to your modern data center will help you save cost, save time and better management. FS.COM is your best choice.

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