show ip device tracking interface

Use this command to display all the IPv4DT (IPv4/VLAN/MAC) entries in the IPv4DT table learned on a specified interface.

Format show ip device tracking interface if-name
Mode Privileged EXEC
Parameter Description
if-name Interface name.

The following fields are displayed in the output of this command.

Field Description
IP Address The learned IPv4 address of the device.
MAC Address The MAC address associated with the learned IPv4 address.
VLAN The VLAN ID associated with an interface on which the device is learned.
Interface The interface name on which the device is learned.
Time left to inactive The number of seconds before the reachable device is set to INACTIVE.
Time since inactive The number of seconds since the INACTIVE device was last reachable.
State Specifies the device is in ACTIVE or INACTIVE state.
Source Specifies the source of the device whether it is ARP, DHCP, or Static.

Example: The following shows example CLI display output for the command.

(Switching) #show ip device tracking interface Gi1/0/1
IP Device Tracking for clients......................... Enable
IP Device Tracking Probe Generation.................... Enable
IP Device Tracking Probe Count......................... 3
IP Device Tracking Probe Interval.......................30
IP Device Tracking Probe Delay Interval.................30
IP Device Tracking Interface Max Entry Limit ...........No Limit
-------------------------------------------------------------------------------
IP Address  MAC Address      Vlan Interface Time-left   Time-since State Source
                                            to inactive inactive
-------------------------------------------------------------------------------
10.21.1.1   01:02:03:04:05:06  2   1/0/1    50          0          ACTIVE  ARP
20.21.1.1   01:02:03:04:05:07  2   1/0/1    80          0          ACTIVE  ARP

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