DASH Workgroup Community Update 1/29/2025

[Kristina Moore]

Hello DASH Community –thank you for your time this week.   

In brief, we discussed our PR for the addition of SmartSwitch-related tables, which will be on hold until the HLD document is complete and ready for Community review.  For the AMD Local Region ID PR, AMD (@Moopath velayudhan, Mukesh) has updated SAI and is collaborating with Riff to test.  We have a draft HLD for Independent DPU updates started, as well as a new SmartSwitch HA (High Availability) Topology (which we will present once out of draft mode).  And lastly, @Satya Valli Rama from TCS has offered to tackle Issue 38 re: northbound gNMI mapping to SAI – thank you TCS!   

In Summary (full list below), since the last Community call we have:
   2 PRs/Issues completed (-4)
   9 in ToDo (+/- 0)
   2 in Draft (+1)
   19 in Progress (+2)
   5 Awaiting Review (+/- 0)

For further reading, see full meeting notes and follow-ups below in this thread. 

Just a reminder that we would encourage/invite Community members to present to the Community (test runs or progress, new scenarios, etc…), just ‘r’ to let me know, or generate a PR in the repo.

Follow-up tasks:

• LF Username Transition: Send an email asking everyone to sign up for the Linux Foundation username transition. (Kristina)
• Floating NIC concept document:  converted to markdown and added to a PR once completed
• Local Region ID: Merge the update to include the local region ID change after passing all checks
• Smart Switch Related Tables: Resolve the conflict related to adding Smart Switch related tables once the HLD is completed. (Oleksandr)
• PTF Test Cases for DASH Flow: Review the PTF test cases for DASH flow (Riff)
• Underlay TTL and HA Session Parameter: Update the documentation to clarify the behavior of the HA session parameter Bounce Back IP. (Marian)
• Dependency Issue for SAI API: Investigate and resolve the dependency issue causing problems for the SAI API upgrade. (Riff)
• Blocking Issue Clarification: Discuss and clarify the blocking issue related to the SAI API upgrade with Mukesh
• Override VM MAC PR Update: Check and update the PR to clarify the behavior of setting the Source Overlay MAC (Marian)
• Independent DPU Upgrade HLD PR 1906: Review the draft of the independent DPU upgrade high-level design. (Team)
• Smart Switch HA Topology Presentation: Arrange for someone to present on the HA topology. (Kristina)
• Provide northbound gNMI/OpenConfig DASH-related schema & mapping to SAI Issue 38: Add Satya to the repo and assign Issue 38 to them. (Kristina)

 

Thank you for your time/contributions – see you on 2/5/2025

With respect to any of our DASH meetings  - Community (Wednesdays), or Behavioral Model (Thursdays) – please let me know if there are PRs, Q&A, or items you would like to discuss or present. 
The DASH YouTube channel link is here to subscribe / access WG content (and click the bell to receive notifications). 

               

Meeting Title:  SONiC-DASH-Workgroup Community Meeting #137

Attendees (16):

DASH Group to join: https://groups.google.com/g/sonic-dash     

DASH-Test-Workgroup Group to join: https://groups.google.com/g/sonic-dash-test-workgroup

Linux Foundation list: https://lists.sonicfoundation.dev/g/SONiC-Dash

 

Ahsan Kaukab - DreamBig Semi	Michal Zygmunt - MSFT	Sairam Rangaswamy - TCS
Bud Grise - XSightLabs	Mircea Dan Gheorghe - Keysight	Satya Valli Rama - TCS
Chris Sommers - Keysight	Oleksandr Ivantsiv - Nvidia	Selvarajan, Arunachalam - AMD
Ezra Yosef - DreamBig Semi	Philipp Keydel - Synogate	Shrivastava, Shweta - Intel
Kristina Moore - MSFT	Qi Luo - MSFT	Swami Balasubramanian - Keysight

 

 

 

 

 

TL:DR DASH Community Notes 😊

 

 

• Linux Foundation Username Transition
• Ongoing issue with the Linux Foundation username transition; the LF is requesting each contributor sign up individually, and this may not capture the entire Community list. 
• Keysight PRs / Issues: Asked Keysight re: test/failure PRs; Keysight indicated to keep them open. 
• Overlay DST MAC: https://github.com/sonic-net/DASH/issues/583
• Private Link Redirect Map (add HLD) PR 664: New draft for the Private Link Redirect Map, which is currently being worked on. Anyone interested can review the draft.
• Update P4 to support PL redirect map PR 663
• Independent DPU Upgrade HLD PR 1906 in SONiC repo: DRAFT
• Smart Switch HA Topology PR 16957 in SONiC repo: Highlighted the addition of a Smart Switch HA topology for the physical test bed in the SONiC repo.  Physical testbed definitions will be added to internal repo.
• Floating NIC: Mentioned the ongoing work on the FNIC concept, which will be converted to markdown and added to a PR once completed. 
• BFD State Table PR 957 in SONiC-SWSS repo:  Noted the addition of a new software BFD state table in the SONiC SWSS schema, which has already been merged.
• PTF Test Cases for DASH Flow: Discussed the test cases for dash flow using the packet test framework, which are still open. Shaogeng and the team in China are working on it and are awaiting a review from Riff.
• AMD Local Region ID : Arunachalam confirmed that Mukesh has updated the SAIwork and is collaborating with Riff to test it out.
• Conferences and Events: Inquired about upcoming conferences and events, mentioning OCP’s European session and Cisco Live in Amsterdam.
• Extend reboot script for rebooting SmartSwitch SONiC-Utilities PR 3566: NVidia confirmed that they are working with Microsoft and are waiting for the resolution of some issues reported.
• Provide northbound gNMI/OpenConfig DASH-related schema & mapping to SAI Issue 38: Satya at TCS expressed interest in contributing; assigned to Satya and provided guidance on the process.
• Development Process Overview: Chris at Keysight provided an overview of the development process, including forking the repository, creating a branch, and submitting a pull request. He offered to help Satya with any questions.

 

 

                             

 

Sticky for Links/Data:
DASH Groups to join to receive Invites, Meeting Notes, and Comms	DASH: https://groups.google.com/g/sonic-dash      DASH-Test-Workgroup Group: https://groups.google.com/g/sonic-dash-test-workgroup   Linux Foundation list: https://lists.sonicfoundation.dev/g/SONiC-Dash	If anyone knows other people who would like info re: our community, please have them joins these groups for receive Comms, etc…
Links to Recording	Teams/Sharepoint: SONiC-DASH Workgroup Community Meeting-20250129_090257-Meeting Recording.mp4   DASH Community YouTube: https://youtu.be/joPjL_ncmx4   HA moved to SmartSwitch LF group Teams Behavioral Model:   YouTube Behavioral Model: next week	1/29/2025 DASH Community Call; please request access via the link if you are not able to view/listen
Azure DASH GitHub Repo:	https://github.com/sonic-net/DASH
Test/Docs folder:	https://github.com/sonic-net/DASH/blob/main/test/docs/dash-test-workflow-saithrift.md	Ideal test workflow is here, converted to .md
SAI Thrift	SAI Thrift PR	Client server needed for testing
P4	https://opennetworking.org/p4/ and https://p4.org/working-groups/	Open source, domain-specific programming language for network devices, specifying packet processing for data plane devices (switches, routers, NICs, filters, etc.)
PINS	https://opennetworking.org/pins/
PNA consortium spec	https://p4.org/p4-spec/docs/PNA-v0.5.0.html	An architecture describing the structure and common capabilities of network interface controller (NIC) devices which process packets transiting one or more interfaces and a host system. Describes the structure and capabilities of the pipeline, and a user program, which specifies the functionality of the programmable blocks within that pipeline. For more information, see the P4 Language Consortium specifications
IPDK	Infrastructure Programmer Development Kit (ipdk.io) and https://github.com/ipdk-io/ipdk-io.github.io	IPDK is an open source, vendor agnostic framework of drivers and APIs for infrastructure offload and management which runs on a CPU, IPU, DPU or switch. IPDK runs in Linux and uses a set of well-established tools such as DPDK and P4 to enable network virtualization.
bmv2	https://github.com/p4lang/behavioral-model	The second version of the reference P4 software switch, nicknamed bmv2 (for behavioral model version 2). The software switch is written in C++11. It takes as input a JSON file generated from your P4 program by a P4 compiler and interprets it to implement the packet-processing behavior specified by that P4 program
DPDK	https://www.dpdk.org/	DPDK is the Data Plane Development Kit which consists of libraries to accelerate packet processing workloads running on a wide variety of CPU architectures.
Linux Foundation SmartSwitch	https://lists.sonicfoundation.dev/g/sonic-smartswitch/calendar

 

       

 

Thank you again for your participation…

Kristina Moore MBA, M.S., CISSP - Azure Core Principal PM / DASH & SmartSwitch
Office: 425-722-7720     Mobile: 425-876-2040     Email: kri...@microsoft.com
DASH Group to join: https://groups.google.com/g/sonic-dash    
DASH-Test-Workgroup Group to join: https://groups.google.com/g/sonic-dash-test-workgroup
Linux Foundation:  https://lists.sonicfoundation.dev/g/SONiC-Dash