06-12-2007 06:20 PM - edited 03-05-2019 04:40 PM
Hi,
This morning, I had outage for all the IPTs. We defined the DHCP pool for IPT VLAN in the core switch. As I checked on the logs, I saw a lot of DHCP address conflict messages. After I clear ip dhcp conflict in the core switch. Everything back to normal. Does anyone know what was caused the problem?
Thanks,
SAM
06-12-2007 10:10 PM
Hi SAM ,
Can you paste the error messages whcih were displaying on switch ..
Thanks,
Satish
06-12-2007 11:09 PM
If you have created multiple DHCP scopes ( maybe on different switches ) then ensure that they do nto clash with each other.
example -
switch 1
192.168.1.10 to 192.168.1.128
switch 2 / server
192.168.1.129 to 192.168.1.254
06-12-2007 11:18 PM
no..i only defined 1 DHCP pool
06-12-2007 11:18 PM
%DHCPD-4-PING_CONFLICT: DHCP address conflict: server pinged 10.128.129.102.
06-12-2007 11:35 PM
Hi Sam ,
1. %DHCPD-4-PING_CONFLICT: DHCP address conflict: server pinged [IP_address].
The DHCP server has detected an address conflict. Another host is using the specified IP address.
Recommended Action: Resolve the misconfiguration. Clear the conflict from the DHCP database. After resolving the conflict, enter the clear ip dhcp conflict command.
Related documents- No specific documents apply to this error message.
Thanks,
Satish
06-12-2007 11:42 PM
Hi Satish,
I did check that error msg in the error msg decoder. I know how to solve it...but i dont know what was the reason caused the problem. And how are we going to prevent this problem to happen again?
Thanks,
SAM
01-28-2008 07:36 AM
Sam,
Today, in the morning, We had the same problem in a customer. I think that a cause could be DHCP snooping..Did you try this on the network?
Thanks.
Ivan Garrido.
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