Specifications

show switchport backup
555
Item Meaning Displayed information
Status Status of the secondary port Forwarding: Forwarding
Blocking: Blocking
Down: Link down
Preemption Delay The time value (in seconds) for
automatic or timer switch-back
- is displayed when this item is not set.
Limit The time remaining until a timer
switch-back (in seconds)
- is displayed when this item is not set.
Flush VLAN VLAN to which flush control
frames are sent
1 to 4094: Indicates a VLAN ID.
untag: No VLAN is specified.
-: Send setting is not set.
Impact on communication
None
Response messages
Table 31-3 List of response messages for the show switchport backup command
Message Description
Uplink redundant is not configured. Uplink redundancy has not been set. Check the
configuration.
Not ready. Please wait a minute. Uplink redundancy is being initialized. Wait a while.
Notes
If there is no configuration for the port channel interface specified as the secondary port, no
information about a primary or secondary pair is displayed.