- Written by Andy Cheng
- Posted on January 3, 2023
- Updated on January 9, 2023
- 5016 Views
4.29.1F adds Latency Analyzer (LANZ) support to the Arista SwitchApp on 7130 series. LANZ monitors SwitchApp internal buffer congestion. When the number of bytes in a buffer is over a high threshold, a congestion start event is created. When the number of bytes in a buffer is below a low threshold, a congestion end event occurs. LANZ on SwitchApp does not report any congestion update as the buffer sizes are too small for it to be meaningful. As SwitchApp comes in different profiles, each profile has a different hardware behavior due to the underlying architectural difference.
- Written by Prasanna Parthasarathy
- Posted on December 23, 2021
- Updated on July 12, 2024
- 12310 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 userguide on the Arista Support site.
- Written by Travis Hammond
- Posted on July 29, 2024
- Updated on July 29, 2024
- 210 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.