If you have upgraded your Cisco Nexus switches to code level 7.0(3)I2(1) or higher and had flowcontrol enabled on an interface, you’ll likely find you’re not able to do a “no flowcontrol receive on” because the command was deprecated. Current recommendation is to default the switch configuration but I have a solution you can implement one switch at-a-time with a single reload to fix this issue:

copy run startup-config
!
copy startup-config <tftp: | scp:>
!
sh run | sed 's/flowcontrol receive on//g' >> bootflash:///no-flow-control-startup-config
!
copy bootflash:///no-flow-control-startup-config startup-config
!
reload
! Do not save the running-config to startup-config - just reload one switch at-a-time

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