D-Link DGS-6600-48T Product Manual - Page 616

DGS-6604 m show ip dhcp conflict show ip dhcp conflict To display the conflict IP addresses while a DHCP Server attempts to assign the IP addresses for a client. show ip dhcp conflict [pool NAME][ADDRESS] Syntax Description ADDRESS (Optional) Specifies the conflict IP address. If no conflict IP address is specified, all conflict IP addresses are applied. pool NAME (Optional) Specifies the pool name for the conflict IP address. If no pool name is specified, all pools are applied for this command. Default Command Mode Usage Guideline Example None User EXEC or any configuration mode The DHCP server detects the conflict by the ping operation. If a conflict address is found, then the IP address found will be removed from address pool and marked as conflict and will not be assigned until a network administrator clears this conflict. If the address is not specified, all conflict addresses are shown. Otherwise, only the conflict address for the specified address is displayed. The IP address, Detection Method and Detection Time will be included in the displayed format. If a duplicate IP address is detected by the DHCP server, the Detection Method will be marked as "ping" and if the duplicate IP address is detected by the DHCP client, the Detection Method will be marked as "Gratuitous ARP". The following example shows the conflict status of IP address 10.1.1.1. switch# show ip dhcp conflict 10.1.1.1 Pool name: pool2 IP address Detected Method Detection time ---------- 10.1.1.1 Ping 18:38:56, 2010-09-30 The following example shows the conflict status of all DHCP IP address pools. switch# show ip dhcp conflict Pool name: pool2 IP address Detected Method ---------- 10.1.1.1 Ping Detection time 18:38:56, 2010-09-30 Pool name: pool3 IP address Detected Method ---------- 172.1.1.1 Gratuitous ARP Detection time 18:38:56, 2010-09-30 CLI Reference Guide 606