Catalyst 3750-E and 3560-E Switch Cisco IOS ... - DNIP . NET

ipv6 dhcp ping packetsChapter 2Catalyst 3750-E and 3560-E Switch Cisco IOS Commandsipv6 dhcp ping packetsUse the ipv6 dhcp ping packets global configuration command on the switch stack or on a standaloneswitch to specify the number of packets a Dynamic Host Configuration Protocol for IPv6 (DHCPv6)server sends to a pool address as part of a ping operation. To prevent the server from pinging pooladdresses, use the no form of this command.ipv6 dhcp ping packets numberno ipv6 dhcp ping packetsNoteThis command is available only if you have configured a dual IPv4 and IPv6 Switch DatabaseManagement (SDM) template on the switch.Syntax DescriptionnumberThe number of ping packets sent before the address is assigned to arequesting client. The range is 0 to 10.Defaults The default is 0.Command ModesGlobal configurationCommand HistoryRelease12.2(46)SEModificationThis command was introduced.Usage GuidelinesTo configure the dual IPv4 and IPv6 template, enter the sdm prefer dual-ipv4-and-ipv6 {default | vlan}global configuration command, and reload the switch.The DHCPv6 server pings a pool address before assigning the address to a requesting client. If the pingis unanswered, the server assumes, with a high probability, that the address is not in use and assigns theaddress to the requesting client.Setting the number argument to 0 turns off the DHCPv6 server ping operation.ExamplesThis example specifies two ping attempts by the DHCPv6 server before further ping attempts stop:Switch(config)# ipv6 dhcp ping packets 22-286Catalyst 3750-E and 3560-E Switch Command ReferenceOL-9776-08