The Arista 7170 Series are a unique family of purpose built multifunctional programmable 100GbE systems, based on the Intel Tofino family of switch chips, designed for high performance environments and to meet the needs of the largest scale data centers. The highly flexible packet processor architecture of the 7170 series, combined with the rich control plane provided by Arista EOS, offers a P4 programmable data-plane that enables innovative applications to be deployed in the network at wire-speed, consuming minimal power and space.
EOS provides a selection of forwarding profiles that address use cases for Cloud Providers, Enterprises, Service Providers and Content Delivery Network operators. The forwarding profiles, written in P4, implement advanced functionality including hypervisor offload, network address translation, server load balancing and customized application specific data plane behavior to address networking requirements that would traditionally require dedicated appliances or proprietary processing modules for routers.
The 7170 Series is available in a choice of configurations with up to 6.4Tbps throughput and 64 x QSFP100 ports. Designed to address leaf and spine roles or deployment as a centralized services node, each 7170 model is a fixed configuration system designed around a single high-performance system-on-chip packet processor. A selection of packet processor variants provide flexible choice in the number of programmable resources available to the system including the number of programmable match-action engines, amount of centralized shared buffer and size of TCAM and SRAM memory for lookup tables.
Table 1. Arista 7170 Series Model Comparison
Model | 7170B-64C | 7170-64C | 7170-32C | 7170-32CD |
Switch Height | 2RU | 2RU | 1RU | 1RU |
Ports | 64 x 100G QSFP | 64 x 100G QSFP | 32 x 100G QSFP | 32 x 100G QSFP |
L2/L3 Throughput (FDX) | 6.4 (12.8) Tbps | 6.4 (12.8) Tbps | 3.2 (6.4) Tbps | 3.2 (6.4) Tbps |
Max Forwarding Rate (pps) | 3.2 Bpps | 4.8 Bpps | 2.4 Bpps | 2.4 Bpps |
Latency* | From 1 us | From 800 ns | From 800 ns | From 800 ns |
Packet Buffer | 64MB Fully Shared | 22MB Fully Shared | 20MB Fully Shared | 20MB Fully Shared |
CPU | Multi Core x86 | Dual Core x86 | Dual Core x86 | Dual Core x86 |
Memory (Optional) | 64GB | 16GB (64GB) | 16GB (32GB) | 16GB |
SSD (Optional) | 120GB | 30GB (+120GB) | 30GB (+30GB) | 30GB |
Pipeline Stages | 80 | 24 | 48 | 24 |
MACsec | Yes | No | No | No |
Typical Power Draw | 12.5W per port | 5W per port | 7W per port | 7W per port |
Airflow | Front to Rear | Front to Rear or Rear to Front | ||
Table 2. Arista 7170 Series Model system resources
Model | 7170B-64C | 7170-64C | 7170-32C | 7170-32CD |
Maximum 100G Ports | 64 | 64 | 32 | 32 |
Maximum 50G Ports | 128 | 128 | 64 | 64 |
Maximum 40G Ports | 64 | 64 | 32 | 32 |
Maximum 25G Ports | 128 | 256 | 128 | 128 |
Maximum 10G Ports | 130 | 258 | 130 | 130 |
Table 1. Arista 7170 Series Ordering Information
Product Number | Product Description |
DCS-7170-64C-F | Arista 7170, Programmable 64 x 100GbE QSFP switch, front to rear air, 2 x AC |
DCS-7170-64C-R | Arista 7170, Programmable 64 x 100GbE QSFP switch, rear to front air, 2 x AC |
DCS-7170-64C# | Arista 7170, Programmable 64 x 100GbE QSFP switch, con!gurable fans and psu |
DCS-7170-64C-M# | Arista 7170, Programmable 64 x 100GbE QSFP switch, expn mem, SSD, con!gurable fans and psu |
DCS-7170-32C-F | Arista 7170, High Capacity Programmable 32 x 100GbE QSFP switch, front to rear air, 2 x AC |
DCS-7170-32C-R | Arista 7170, High Capacity Programmable 32 x 100GbE QSFP switch, rear to front air, 2 x AC |
DCS-7170-32C# | Arista 7170, High Capacity Programmable 32 x 100GbE QSFP switch, con!gurable fans and psu |
DCS-7170-32C-M-F | Arista 7170, High Capacity Programmable 32 x 100GbE QSFP switch, expn mem, SSD, front to rear air, 2 x AC |
DCS-7170-32C-M-R | Arista 7170, High Capacity Programmable 32 x 100GbE QSFP switch, expn mem, SSD, rear to front air, 2 x AC |
DCS-7170-32C-M# | Arista 7170, High Capacity Programmable 32 x 100GbE QSFP switch, expn mem, SSD, con!gurable fans and psu |
DCS-7170-32CD-F | Arista 7170, Programmable 32 x 100GbE QSFP switch, front to rear air, 2 x AC |
DCS-7170-32CD-R | Arista 7170, Programmable 32 x 100GbE QSFP switch, rear to front air, 2 x AC |
DCS-7170-32CD# | Arista 7170, Programmable 32 x 100GbE QSFP switch, con!gurable fans and psu |
