I have a query regarding DHCP conflicts. One of our customer is using Cisco 4500 switches in Core/Distribution and these switches are running DHCP service as well. There is one DHCP Pool configured for IP Phones (172.21.17.0/24). Today morning we got compalint from cutomer that IP Phones are not able to get IP address so I checked the primary 4500 switch and found 'DHCP conflict' log messages so I used ' claer ip dhcp conflict *' command and after that all IP Phones started getting ip addresses.
What could be the possible cause of this problem ? Should we disable logging of DHCP conflicts ?
Can we avoid such incident by using 'ip dhcp ping' command ? Kindly guide me in this reagrd.
Thanks in Advance.