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[RARE-users] 1x400G to 4x100G breakout on Tofino2

From: Marcos Felipe Schwarz <>
To: "" <>
Cc: "" <>
Subject: [RARE-users] 1x400G to 4x100G breakout on Tofino2
Date: Tue, 14 Mar 2023 17:47:42 +0000
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Hi all,

We are trying to configure a 1x400G to 4x100G breakout on Tofino2, but it seems to not be supported.

Follows my configuration:

server p4lang p4

export-port sdn13000 288 100 3 1 0

export-port sdn13004 292 100 3 1 0

export-port sdn12000 296 100 3 1 0

export-port sdn12004 300 100 3 1 0

export-port sdn11000 304 100 3 1 0

export-port sdn11002 306 100 3 1 0

export-port sdn11004 308 100 3 1 0

export-port sdn11006 310 100 3 1 0

interconnect ethernet0

vrf p4

exit

sdn12XXX and sdn13XXX are 1x400G to 2x200G breakout, and are working correctly. But for sdn11XXX it didn’t work, at bfshell, we can verify that it didn’t configured the lanes correctly:

11/0 |22/0|304|2/48|100G | RS |Ds|Au|NO |ENB|DWN| NONE | 0| 0|

11/1 |22/1|305|2/49|-------|----|--|--|---|---|---|--------|----------------|----------------|-

11/2 |22/2|306|2/50|-------|----|--|--|---|---|---|--------|----------------|----------------|-

11/3 |22/3|307|2/51|-------|----|--|--|---|---|---|--------|----------------|----------------|-

11/4 |22/4|308|2/52|100G | RS |Ds|Au|NO |ENB|DWN| NONE | 0| 0|

11/5 |22/5|309|2/53|-------|----|--|--|---|---|---|--------|----------------|----------------|-

11/6 |22/6|310|2/54|-------|----|--|--|---|---|---|--------|----------------|----------------|-

11/7 |22/7|311|2/55|-------|----|--|--|---|---|---|--------|----------------|----------------|-

Regards,

Marcos Schwarz | Gerente de P&D | R&D Manager

Gerência de P&D em Ciberinfraestrutura (GCI) | Cyberinfrastructure R&D Management

Tel.: +55 (19) 98303-3010 | Teams:

www.rnp.br

[RARE-users] 1x400G to 4x100G breakout on Tofino2, Marcos Felipe Schwarz, 03/14/2023
- Re: [RARE-users] 1x400G to 4x100G breakout on Tofino2, Alexander Gall, 03/15/2023
  - Re: [RARE-users] 1x400G to 4x100G breakout on Tofino2, Alexander Gall, 03/15/2023

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[RARE-users] 1x400G to 4x100G breakout on Tofino2