Dell N3200-ON EMC Networking N-Series Switches CLI Reference Guide version 6.6 - Page 1970

DHCP Client Commands Dell EMC Networking switches support an embedded DHCP client. Any IP interface can use DHCP to obtain an IP address. The DHCP client can run on multiple interfaces simultaneously. For IPv4, an IP interface can either use manually configured addresses or be enabled for DHCP. The options are mutually exclusive. When the operator enables DHCPv4 on an IP interface, all manually configured IP addresses on that interface are removed from the running configuration. When the operator configures an IP address, the system automatically releases any IPv4 address assigned by a DHCP server and disables DHCPv4 on the interface. For IPv6, DHCP can coexist with configured addresses. The operator may enable DHCPv6 and configure IPv6 addresses on the same interface. Only a single in-band interface can be configured as a DHCPv6 client. DHCP is disabled by default on all in-band interfaces. The DHCP client retains an IP address even if the IP interface goes down. The client does not attempt to renew its IP address until the lease expires, regardless of changes in link state. The operator may renew or release an IP address at any time using the new release dhcp and renew dhcp CLI commands (or web or SNMP equivalents). When an IPv6 address is leased from a DHCP server, the address has a mask length of 128. A local route for the network is only installed if the router receives and accepts IPv6 router advertisements on the interface. Because router advertisements are not accepted on a routing interface, a leased IPv6 address on a routing interface is not necessarily useful. release dhcp Use the release dhcp command to force the DHCPv4 client to release a leased address. Syntax release dhcp interface-id • interface-id-Any valid VLAN interface. See Interface Naming Conventions for interface representation. Switch Management Commands 1970