API Guide

Example (IPv4)
OS10(config)# interface eth 1/1/22
OS10(conf-if-eth1/1/22)# ip helper-address 20.1.1.1 vrf blue
Supported
Releases
10.2.0E or later
ipv6 helper-address
Configures a DHCPv6 server address.
Syntax
ipv6 helper-address ipv6-address [vrf vrf-name]
Parameters
● vrf vrf-name — (Optional) Enter the keyword vrf and then the name of the VRF through which
the host address can be reached.
● ipv6–address — Specify the DHCPv6 server address in the A::B format.
Defaults Disabled
Command Mode INTERFACE
Usage
Information
Use this command on interfaces to which DHCPv6 clients connect, to forward the packets between IPv6
clients and a DHCPv6 server. After you configure an IPv6 helper address, the address forwards UDP
broadcasts from IPv6 clients to the DHCPv6 server. You can configure multiple helper addresses on an
interface by repeating the same command for each DHCPv6 server address. The no version of this
command deletes the IPv6 helper address.
Example
OS10(config)# interface ethernet 1/1/22
OS10(conf-if-eth1/1/22)# ipv6 helper-address 2001:db8:0:1:1:1:1:1 vrf
blue
Supported
Releases
10.4.1.0 or later
DHCP server commands
default-router address
Assigns a default gateway to clients based on the IP address pool.
Syntax
default-router address [address2...address8]
Parameters
● address — Enter an IPv4 or IPv6 address to use as the default gateway for clients on the subnet in
A.B.C.D or A:B format.
● address2...address8 — (Optional) Enter up to eight IP addresses, in order of preference.
Default Not configured
Command Mode DHCP-POOL
Usage
Information
Configure up to eight IP addresses, in order of preference. Use the no version of this command to
remove the configuration.
Example
OS10(conf-dhcp-pool2)# default-router 20.1.1.100
Supported
Releases
10.2.0E or later
System management 229