Cisco Nexus 9000 Series - You Cannot Enable an Interface; You Cannot Configure a Dedicated Port

SolutionPossible CauseSymptoms
Cisco NX-OS removes the
interface configuration when you
switch between Layer 2 and Layer
3 port mode. You must reconfigure
the interface.
The interface mode has changed to
or from the switchport mode.
The interface configuration has
disappeared.
You Cannot Enable an Interface
You might have a problem when enabling an interface.
SolutionPossible CauseProblem
You cannot enable the other three ports
in a port group if one port is dedicated.
Use the show running-config interface
CLI command to verify the rate mode
setting.
The interface is part of a dedicated
port group.
You cannot enable an
interface.
Use the show interface capabilities
command on both ports to determine if
both ports have the same capabilities.
Modify the configuration as needed to
make the ports compatible.
The interface configuration is
incompatible with a remote port.
Use the show interface brief command
to see if the interface is configured in a
VLAN. Use the show vlan brief
command to determine the status of the
VLAN. Use the state active command in
VLAN configuration mode to configure
the VLAN as active.
The Layer 2 port is not associated
with an access VLAN, or the VLAN
is suspended.
Use the show interface brief command
to see if you are using an incorrect
transceiver. Replace with a
Cisco-supported SFP.
An incorrect SFP is connected to the
port.
You Cannot Configure a Dedicated Port
You may have a problem when trying to configure a port as dedicated.
Cisco Nexus 9000 Series NX-OS Troubleshooting Guide, Release 7.x
40
Troubleshooting Ports
You Cannot Enable an Interface