[action] [PR:12605] [Mellanox] Support DSCP remapping in dual ToR topo on T0 switch #13787
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
…c-net#12605) - Why I did it Support DSCP remapping in dual ToR topo on T0 switch for SKU Mellanox-SN4600c-C64, Mellanox-SN4600c-D48C40, Mellanox-SN2700, Mellanox-SN2700-D48C8. - How I did it Regarding buffer settings, originally, there are two lossless PGs and queues 3, 4. In dual ToR scenario, the lossless traffic from the leaf switch to the uplink of the ToR switch can be bounced back. To avoid PFC deadlock, we need to map the bounce-back lossless traffic to different PGs and queues. Therefore, 2 additional lossless PGs and queues are allocated on uplink ports on ToR switches. On uplink ports, map DSCP 2/6 to TC 2/6 respectively On downlink ports, both DSCP 2/6 are still mapped to TC 1 Buffer adjusted according to the ports information: Mellanox-SN4600c-C64: 56 downlinks 50G + 8 uplinks 100G Mellanox-SN4600c-D48C40, Mellanox-SN2700, Mellanox-SN2700-D48C8: 24 downlinks 50G + 8 uplinks 100G - How to verify it Unit test. Signed-off-by: Stephen Sun <stephens@nvidia.com>
8 tasks
|
Original PR: #12605 |
|
Commenter does not have sufficient privileges for PR 13787 in repo sonic-net/sonic-buildimage |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
No description provided.