ipv6 helper-address

Description

Defines the address of a remote DHCPv6 server or DHCPv6 relay agent. Up to eight addresses can be defined. The DHCPv6 agent forwards DHCPv6 client requests to all defined servers.

The no form of this command removes an IP helper address.

Command context

config-if

Parameters

<UNICAST-IPV6-ADDR>

Specifies the unicast helper IP address in IPv6 format (xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx), where x is a hexadecimal number from 0 to F. You can use two colons (::) to represent consecutive zeros (but only once), remove leading zeros, and collapse a hextet of four zeros to a single 0. For example, this address 2222:0000:3333:0000:0000:0000:4444:0055 becomes 2222:0:3333::4444:55

<MULTICAST-IPV6-ADDR>

Specifies the multicast helper IP address in IPv6 format (xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx), where x is a hexadecimal number from 0 to F. You can use two colons (::) to represent consecutive zeros (but only once), remove leading zeros, and collapse a hextet of four zeros to a single 0. For example, this address 2222:0000:3333:0000:0000:0000:4444:0055 becomes 2222:0:3333::4444:55

all-dhcp-servers

Specifies all the DHCP server IPv6 addresses for the interface.

egress <PORT-NUM>

Specifies the port on which to relay DHCP packets. Some switches (such as the Aruba 8400 Switch Series), use the format member/slot/port (for example, 1/1/1). Other switches use slot/port (for example, 1/1).

Authority

Administrators

Examples

Defining a multicast IPv6 helper address of 2001:DB8::1 on port 1/1/2:

switch(config-if)# ipv6 helper-address multicast 2001:DB8:0:0:0:0:0:1 egress 1/1/2

Removing the IP helper address of 2001:DB8::1 on port 1/1/2:

switch(config-if)# no ipv6 helper-address multicast 2001:DB8:0:0:0:0:0:1 egress 1/1/2