D-Link DXS-3600-16S CLI Guide - Page 218
ip dhcp excluded-address, ip dhcp ping packet
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DXS-3600 Series 10GbE Layer 2/3 Switch CLI Reference Guide 14-9 ip dhcp excluded-address This command is used to define some IP addresses and make the DHCP server not assign them to the DHCP client in the global configuration mode. The no form of this command can be used to cancel this definition. ip dhcp excluded-address [vrf vrf-name] low-ip-address [high-ip-address] no ip dhcp excluded-address [vrf vrf-name] low-ip-address [high-ip-address] Parameters vrf vrf-name low-ip-address high-ip-address (Optional) Excludes IP addresses from a virtual routing and forwarding (VRF) space. Specifies to exclude the IP address, or exclude the start IP address within the range of the IP address. Specifies to exclude the end IP address within the range of the IP address. Default Command Mode Command Default Level Usage Guideline No excluded address is defined. Global Configuration Mode. Level: 8 If the excluded IP address is not configured, the DHCP server attempts to assign all IP addresses in the DHCP address pool. This command can reserve some IP addresses for specific hosts to prevent these addresses are assigned to the DHCP client, and define the excluded IP address accurately to reduce the conflict detecting time when the DHCP server assigns the address. Example In the configuration example below, the DHCP server will not attempt to assign the IP addresses within 192.168.12.100~150. DXS-3600-32S#configure terminal DXS-3600-32S(config)#ip dhcp excluded-address vrf vrf1 192.168.12.100 192.168.12.150 DXS-3600-32S(config)# 14-10 ip dhcp ping packet This command is used to configure the times of pinging the IP address when the DHCP server detects address conflict in the global configuration mode. The no form of this command is used to restore it to the default configuration. ip dhcp ping packet [number] no ip dhcp ping packet Parameters number (Optional) Specifies the number of packets in the range of 0 to 10, where 0 indicates disabling the ping operation. The Ping operation sends two packets by default. Default Command Mode Command Default Level Usage Guideline The Ping operation sends two packets by default. Global Configuration Mode. Level: 8 When the DHCP server attempts to assign the IP address from the DHCP address pool, use the ping operation to check whether this address is occupied by other hosts. Record it if the address is occupied, otherwise, assign it to the DHCP client. The Ping operation will send up to 10 packets, two packets by default. 210
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