Verifying the ErrDisable State Using the CLI
SUMMARY STEPS
1.
switch# show interface interface slot/port
2.
switch# show logging logfile
DETAILED STEPS
PurposeCommand or Action
Verifies that the device detected a problem and disabled the
port.
switch# show interface interface slot/port
Example:
switch# show interface ethernet 1/14
e1/7 is down (errDisabled)
Step 1
After verifying the port is disabled, check cables,
SFPs, and optics.
Note
Displays the switch log file and view a list of port state
changes.
switch# show logging logfile
Example:
switch# show logging logfile
Step 2
This example shows how to display the switch log file and view a list of port state changes. An error was
recorded when someone attempted to add port e1/7 to port channel 7. The port was not configured identically
to port channel 7, so the attempt failed:
switch# show logging logfile
. . .
Jan 4 06:54:04 switch %PORT_CHANNEL-5-CREATED: port-channel 7 created
Jan 4 06:54:24 switch %PORT-5-IF_DOWN_PORT_CHANNEL_MEMBERS_DOWN: Interface
port-channel 7 is down (No operational members)
Jan 4 06:54:40 switch %PORT_CHANNEL-5-PORT_ADDED: e1/8 added to port-channel 7
Jan 4 06:54:56 switch %PORT-5-IF_DOWN_ADMIN_DOWN: Interface e1/7 is down
(Admnistratively down)
Jan 4 06:54:59 switch %PORT_CHANNEL-3-COMPAT_CHECK_FAILURE:
speed is not compatible
Jan 4 06:55:56 switch%PORT_CHANNEL-5-PORT_ADDED: e1/7 added to port-channel 7
Cisco Nexus 9000 Series NX-OS Troubleshooting Guide, Release 7.x    
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Troubleshooting Ports
Verifying the ErrDisable State Using the CLI