
576 DHCPv6 Commands
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Syntax
ipv6 dhcp relay
{
destination
relay-address
[
interface vlan
vlan-id
] |
interface vlan
vlan-
id
}[
remote-id
{
duid-ifid
|
user-defined-string
}]
•
destination—
Keyword that sets the relay server IPv6 address.
•
relay-address
—
An IPv6 address of a DHCPv6 relay server.
• interface—
Sets the relay server interface.
•
vlan-id
—
A valid VLAN ID.
• [remote-id
{
duid-ifid|
user-defined-string
}]
—
The Relay Agent Information Option
“remote ID” sub-option to be added to relayed messages. This can either be the special
keyword duid-ifid, which causes the “remote ID” to be derived from the DHCPv6 server
DUID and the relay interface number, or it can be specified as a user-defined string.
Default Configuration
This command has no default configuration.
Command Mode
Interface Configuration (VLAN, Tunnel) mode
User Guidelines
If
relay-address
is an IPv6 global address, then
relay-interface
is not required. If
relay-address
is
a link-local or multicast address, then
relay-interface
is required. Finally, a value for
relay-
address
is not specified, then a value for
relay-interface
must be specified and the DHCPV6-
ALLAGENTS multicast address (i.e. FF02::1:2) is used to relay DHCPv6 messages to the
relay server.
Example
The following example configures VLAN 15 for DHCPv6 relay functionality.
console(config)#interface vlan 15
console(config-if-vlan15)#ipv6 dhcp relay destination 2020:1::1
ipv6 dhcp relay-agent-info-opt
Use
ipv6 dhcp relay-agent-info-opt
command in Global Configuration mode to configure a
number to represent the DHCPv6 Relay Agent Information Option. The DHCPv6 Relay Agent
Information Option allows for various sub-options to be attached to messages that are being
relayed by the local router to a relay server. The relay server may in turn use this information in
determining an address to assign to a DHCPv6 client.
Syntax
ipv6 dhcp relay-agent-info-opt
option
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