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 Samba multichannel support for AIX

Sławomir Książek's profile image
Sławomir Książek posted Mon May 11, 2026 09:10 AM

Hello Team

I would like to ask if Samba Multichannel is officially supported on AIX with Samba.

From what I can see:

  • Samba binaries appear to be compiled with multichannel support
  • configuration options related to multichannel are available

However, I cannot get SMB Multichannel to work correctly in practice.

Environment:

  • AIX version: 7.2 TL5
  • Samba version: 4.21
  • Client OS: Windows 2019/AD
  • Network configuration: multiple NICs 

Current smb.conf relevant settings:

server multi channel support = yes
aio read size = 1
aio write size = 1
interfaces = ...
bind interfaces only = yes

What I observe:

client connects successfully

SMB3 is negotiated correctly

only a single TCP connection/channel is established

no additional channels are created

Questions:

Is SMB Multichannel officially supported on AIX builds of Samba?

Has anyone successfully configured SMB Multichannel on AIX?

I would appreciate any confirmation, recommendations, or working configuration examples.

Thank you,