Tag :: FPGA

Written by Alejandro Schwoykoski

Posted on December 22, 2021

Updated on January 20, 2026

19604 Views

MetaMux is an FPGA-based feature available on Arista’s 7130 platforms. It performs ultra-low latency Ethernet packet multiplexing with or without packet contention queuing. The port to port latency is a function of the selected MetaMux profile, front panel ingress port, front panel egress port, FPGA connector ingress port, and platform being used.

TOI FPGA 4.27.1F MetaMux EOS 4.28.1F EOS 4.28.2F 7130 EOS 4.29.0F EOS 4.30.2F Ultra Low Latency EOS 4.33.0F EOS 4.33.2F EOS 4.35.1F

Written by David Mirabito

Posted on December 30, 2021

Updated on April 6, 2026

30141 Views

MetaWatch is an FPGA-based feature available for Arista 7130 Series platforms. It provides precise timestamping of packets, aggregation and deep buffering for Ethernet links. Timestamp information and other metadata such as device and port identifiers are appended to the end of the packet as a trailer.

TOI FPGA EOS 4.27.1F EOS 4.28.0F EOS 4.28.2F 7130 EOS 4.29.1F EOS 4.30.0F EOS 4.30.2F EOS 4.31.0F EOS 4.31.1F EOS 4.31.2F EOS 4.32.0F EOS 4.32.1F EOS 4.32.2F Ultra Low Latency MetaWatch EOS 4.33.0F EOS 4.33.1F EOS 4.33.2F EOS 4.34.0F EOS 4.34.1F EOS 4.34.2F EOS 4.35.0F EOS 4.35.1F EOS 4.35.2F

Written by Diego Asturias

Posted on January 30, 2024

Updated on February 2, 2026

10389 Views

In EVPN, an overlay index is a field in type-5 IP Prefix routes that indicates that they should resolve indirectly rather than using resolution information contained in the type-5 route itself. Depending on the type of overlay index, this resolution information may come from type-1 auto discovery or type-2 MAC+IP routes. For this feature the gateway IP address field of the type-5 NLRI is used as the overlay index, which matches the target IPv4 / IPv6 address in the type-2 NLRI. Other types of overlay index are described in RFC9136, but these are currently unsupported.

TOI FPGA 7130 EOS 4.31.1F MultiAccess Ultra Low Latency EOS 4.33.0F EOS 4.33.2F EOS 4.34.2F EOS 4.35.0F EOS 4.35.1F

Written by Prasanna Parthasarathy

Posted on December 23, 2021

Updated on April 2, 2026

25459 Views

SwitchApp is an FPGA-based feature available on Arista’s 7130LB-Series and 7132LB-Series platforms. It performs ultra low latency Ethernet packet switching. Its packet switching feature set, port count, and port to port latency are a function of the selected SwitchApp profile. Detailed latency measurements are available in the user guide on the Arista Support site.

TOI SwitchApp FPGA EOS 4.27.1F EOS 4.28.0F EOS 4.28.2F 7130 EOS 4.29.1F EOS 4.29.2F EOS 4.32.2F Ultra Low Latency EOS 4.33.0F EOS 4.33.1F EOS 4.33.2F EOS 4.34.0F EOS 4.34.1F EOS 4.34.2F EOS 4.35.0F EOS 4.35.1F EOS 4.35.2F

Written by Travis Hammond

Posted on July 29, 2024

Updated on September 16, 2025

5967 Views

Arista’s DCS-7130LBR series of switches are capable of supporting SwitchApp, which is an FPGA-based L2/L3 switch. However, as the switch would then contain two switch ASICs (one traditional switch ASIC, and one FPGA-based switch) physically upon loading the SwitchApp application, there are certain limitations and nuances along with its usage. This document intends to explain some of the details.

TOI SwitchApp FPGA 7130 EOS 4.32.1F Ultra Low Latency EOS 4.34.2F

Written by James Nakoda

Posted on March 3, 2025

Updated on July 2, 2025

3761 Views

WRAS is an EOS extension to automatically manage the layer 1 connectivity of the MetaWatch's WhiteRabbit interface.

TOI FPGA 7130 Ultra Low Latency MetaWatch EOS 4.33.2F White Rabbit

MetaMux Ultra Low Latency Packet Multiplexing

MetaWatch: Precise Packet Timestamping

MultiAccess: Low Latency Port ACLs

SwitchApp: ultra low latency packet switching

Using SwitchApp on DCS-7130LBR Switches

White Rabbit Auto Source (WRAS)