Arista 7050CX3M-32S:

32x 100G QSFP100 ports, 2 SFP+ ports

7050X3 MACsec | Model Overview

High Availability

The Arista 7050CX3M series switches are designed for high availability

from both a software and hardware perspective. Key high availability

features include

• 1+1 hot-swappable power supplies and three N+1 hot-swap fans

• Color coded PSU’s and fans

• Live software patching

• Self healing software with Stateful Fault Repair (SFR)

• Smart System Upgrade (SSU)

• Multi-chassis LAG for active/active L2 multi-pathing

• 128-way ECMP routing for load balancing and redundancy

Model Overview

The Arista 7050X3 MACsec systems deliver high performance combined with feature rich layer 2 and layer 3 forwarding, suited for both

top of rack leaf, or xed con guration spines, connecting to existing and next generation systems with a choice of interface speeds.

Dynamic Bu er Allocation

In cut-through mode, the Arista 7050CX3M switches forward packets with a consistent low latency of 800 nanoseconds. Upon

congestion, the packets are bu ered in an intelligent fully shared packet memory that has a total size of 32MB for superior burst

absorption. Unlike other architectures that have xed per-port packet memory, the 7050X3 Series use dynamic thresholds to allocate

packet memory based on tra c class, queue depth and quality of service policy ensuring a fair allocation to all ports of both lossy and

lossless classes. Bu er utilization, occupancy and thresholds are all visible with Arista LANZ and can be exported to monitoring tools to

identify hotspots and measure latency at the device and end to end.

100G Wire-speed Encryption

Industry standard IEEE 802.1AE (MAC Security standard, referred to as MACsec) capabilities provide line-rate frame encryption and

authentication for all tra c. This removes the need for additional encryption devices and ensures con dentiality as well as provides

anti-replay protection and therefore con dence in the integrity of encrypted tra c. MACsec is a link layer encryption technology and

operates at the speed of the Ethernet ports, providing high performance without the processing overheads associated with encryption

options such as IPSec.

MACsec uses a long-term key to derive session keys used for encryption utilizing the MACsec Key Agreement Protocol per IEEE

802.1X-2010. Long term keys can either be statically de ned or derived via RADIUS server(s). Data is encrypted using the 128 bit or 256-

bit GCM-AES-XPN block cipher suite. MACsec encryption is a EOS licensed feature and requires a license le to enable the encryption

feature. License information is included in the ordering information section of this document. The 7050CX3M enables MACsec at a

range of speeds, including 10G, 25G, 40G and 100G, determined by the operation of the QSFP ports mode.

Arista 7050CX3M-32S 1RU Rear View - Front to rear air ow

The 7050CX3M-32S is a 1RU system with 32 100G QSFP ports o ering wire speed

throughput of up to 6.4 Tbps bi-directional with wire speed encryption on all QSFP

ports. Each QSFP port supports a choice of 5 speeds with exible con guration

between 100GbE, 40GbE, 4x10GbE, 4x25GbE or 2x50GbE modes for up to 128 ports of

10GbE and 25GbE or 64 ports of 50GbE. All ports can operate in any supported mode

without limitation, allowing easy migration from lower speeds and the exibility for

leaf or spine deployment. Two additional SFP+ ports provide 1/10G support for out of

band and management network connections.

7050CX3M-32S hot swap fans and power supplies