Specifications

show ip dhcp conflict
438
show ip dhcp conflict
Displays an IP address conflict detected by the DHCP server. An IP address conflict refers
to an IP address assigned to a terminal over the network, although it is blank as a pool IP
address on the DHCP server. An IP address conflict is detected by the DHCP DECLINE
packet received from the client that detected the collision, or as a result of duplication of the
IP address and the IP address for the VLAN that defines DHCP.
Syntax
show ip dhcp conflict [<IP address>]
Input mode
User mode and administrator mode
Parameters
<IP address>
Displays the IP address conflict information for the specified IP address.
Operation when this parameter is omitted:
All IP address conflict information detected by the DHCP server is displayed.
Example
Figure 26-8 Execution result of displaying IP address conflict information detected by the
DHCP server
> show ip dhcp conflict
Date 2008/11/26 09:29:36 UTC
No IP Address Detection Time
1 192.168.100.200 2008/11/26 09:27:55
2 192.168.100.6 2008/11/26 09:28:57
>
Display items
Table 26-36 Items displayed for IP address conflict information detected by DHCP server
Item Meaning Displayed information
# Entry number --
IP Address IP address conflict detected by the
DHCP server
--
Detection Time Detection time
year/month/day
hour:minute:second
Impact on communication
None