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.

Not supported on the OOBM interface.

Thenoform of this command removes an IP helper address.

Command context

config-if

Parameters

Specifies the unicast helper IP address in IPv6 format (xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx), wherexis a hexadecimal number from 0 to F.

<多CAST-IPV6-ADDR>

Specifies the multicast helper IP address in IPv6 format (xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx), wherexis a hexadecimal number from 0 to F.

all-dhcp-servers

Specifies all the DHCP server IPv6 addresses for the interface.

egress

Specifies the port number on which DHCPv6 service requests are relayed to a multicast destination. The egress port must be different than the one on which the multicast helper address is configured. Format:member/slot/port.

vrf

Specifies the name of the VRF from which the specified protocol sets its source IP address.

Authority

Administrators or local user group members with execution rights for this command.

Examples

On the 6400 Switch Series, interface identification differs.

定义一个多播辅助IPv6地址2001:DB8::1on port1/1/2:

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

Removing the IP helper address of2001:DB8::1on port1/1/2:

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