Reference Guide

• The only configuration applicable to half duplex ports is rx off tx off. The
following error is returned:
Can’t configure flowcontrol when half duplex is
configure, config ignored
• Half duplex cannot be configured when the flow control configuration is on (default is
rx on tx on). The following error is returned:
Can’t configure half duplex when flowcontrol is on,
config ignored
NOTE: The flow control must be off (rx off tx off) before configuring the half
duplex.
• Speeds less than 1 Gig cannot be configured when the asymmetric flow control
configuration is on. The following error is returned:
Can’t configure speed <1G when Asymmetric flowcontrol is
on, config ignored
• FTOS only supports rx on tx on and rx off tx off for speeds less than 1 Gig
(Symmetric).
NOTE: If you use the disable rx flow control command, Dell Networking
recommends rebooting the system.
Example
FTOS(conf-if-gi-0/1)#show config
!
interface GigabitEthernet 0/1
no ip address
switchport
no negotiation auto
flowcontrol rx off tx on
no shutdown
...
Example (Values)
This Example shows how FTOS negotiates the flow control values between two Dell
Networking chassis connected back-to-back using 1G copper ports.
Configured
LocRxConf LocTxConf RemoteRxConf RemoteTxConf
off off off off
off on
on off
on on
off on off off
off on
on off
on on
on off off off
off on
on off
on on
on on off off
off on
on off
on on
LocNegRx LocNegTx RemNegRx RemNegTx
off off off off
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