USG5530 for address pool configuration error leads to address conflict

Publication Date:  2012-11-07 Views:  209 Downloads:  0
Issue Description
The customer said both the PC under equipment and the interface of the equipment are unable to be configured IP and prompt address conflict at the same time.
Alarm Information
None.
Handling Process
Landing equipment found that it really prompts conflict. Check the DHCP, the customer says they don't want to dodge the distributed IP, there is no other configuration. See the address pool configured a long IP address, configuration is as follows:
nat address-group 1 192.168.0.1 192.168.5.254
dhcp server forbidden-ip 192.168.0.1 192.168.2.254
acl number 2001
rule 0 permit source 192.168.0.0 0.0.255.255
rule 1 deny
interface GigabitEthernet0/0/0
ip address 192.168.100.1 255.255.255.0
interface GigabitEthernet0/0/1
ip address 1.1.1.1 255.255.255.240
interface GigabitEthernet0/0/2
ip address 192.168.1.254 255.255.248.0
Modified it for the outbound interface address “NAT address - group 1 1.1.1.1 1.1.1.1”, problem is solved.
Root Cause
May be mask configured error, or DHCP configured error.
Suggestions
Testing in lab, we found as long as configured the address pool at first, then no matter the PC or the equipment interface all prompt address conflict. So proposal configure interface IP at first, and then configure address pool.

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