Sep 14, 2025 · A place to discuss the P4 Programming Language and Ecosystem

Apr 2, 2023 · A P4 register is in some ways better named an “array”, if that makes it more familiar to you. It is an array of values, all with the same type. A read operation retrieves the value stored in the …

Dec 28, 2024 · The P4_16 language spec includes a sample P4_16 architecture, called “Very Simple Switch Architecture” to illustrate the necessary points. PSA, PNA, v1model, TNA, T2NA and a …

Feb 23, 2022 · The P4 16 language version (this is a perception more than a fact) seems to have put the PISA term aside. P4 16 also required the “architecture” concept (like V1Model) so the concept of …

Nov 7, 2024 · We want to use P4 for CPS applications and are in the process of purchasing two Tofino2 switches. For that, I recently applied for the Intel Connectivity Research Program to obtain the Intel …

Dec 12, 2024 · Is your P4 program something you are able and willing to publish? If so, it might help others who have tried to improve the performance of p4c to profile the code while compiling your …

Mar 25, 2023 · I am new to P4 and I want to deploy P4 switches in a virtual environment (among multiple VMS, select the middle VM as the P4 switch) and I would like to ask if there is a better way …

Sep 3, 2022 · The P4 program is written so that at least some such injected packets from the controller perform read or write operations on a P4 register array, and send a packet back to the controller. …

Mar 18, 2025 · Hi, I am writing P4 code to perform deep packet inspection on incoming traffic, using the method of recirculation. I came across a logic which is able to detect a pattern, stop recirculation, …

Mar 12, 2025 · I would like to ask if the P4 switch can respond to dynamic routing (e.g. ospf, rip, etc.) and inform the router about the available network neighbors of the P4 switch? For example, OSPF, …