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AIX host not able to mount NFSv3 exports when largesend/bypass_mtu is enabled on client

Views:
185
Visibility:
Public
Votes:
0
Category:
ontap-9
Specialty:
nfs
Last Updated:

Applies to

  • ONTAP 9 and later
  • AIX
  • NFSv3

Issue

  • AIX host trying to mount NFSv3 export and gets error "nfs server <server> not responding, still trying……". 
  • Client is sending bigger packets than negotiated MSS (maximum segment size), which gets dropped in the network
  • largesend and bypass_mtu feature is enabled on client end.

 

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