HP 6125G HP 6125G & 6125G/XG Blade Switches Layer 3 - IP Services Conf - Page 119
Configuring the DHCPv6 relay agent, Configuration guidelines, Configuration procedure
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2. After receiving the Solicit message, the DHCPv6 relay agent encapsulates the message into the Relay Message option of a Relay-forward message, and sends the message to the DHCPv6 server. 3. After obtaining the Solicit message from the Relay-forward message, the DHCPv6 server selects an IPv6 address and other required parameters, and adds them to the reply which is encapsulated within the Relay Message option of a Relay-reply message. The DHCPv6 server then sends the Relay-reply message to the DHCPv6 relay agent. 4. The DHCPv6 relay agent obtains the reply from the Relay-reply message and sends the reply to the DHCPv6 client. The DHCPv6 client uses the IPv6 address and other network parameters assigned by the DHCPv6 server to perform network configuration. Configuring the DHCPv6 relay agent Upon receiving a Solicit message from a DHCPv6 client, the interface that operates as a DHCPv6 relay agent encapsulates the request into a Relay-forward message and forwards the message to the specified DHCPv6 server, which then assigns an IPv6 address and other configuration parameters to the DHCPv6 client. Configuration guidelines Follow these guidelines when you configure the DHCPv6 relay agent: • Before you configure the DHCPv6 relay agent, enable IPv6 by using the ipv6 command in system view. • Executing the ipv6 dhcp relay server-address command repeatedly can specify multiple DHCPv6 servers. Up to eight DHCPv6 servers can be specified for an interface. After receiving requests from DHCPv6 clients, the DHCPv6 relay agent forwards the requests to all the specified DHCPv6 servers. • If the DHCPv6 server address is a link-local address or link-scoped multicast address on the local link, you must specify an outgoing interface using the interface keyword in the ipv6 dhcp relay server-address command. Otherwise, DHCPv6 packets may fail to be forwarded to the DHCPv6 server. • After you remove all the specified DHCPv6 servers from an interface with the undo ipv6 dhcp relay server-address command, DHCPv6 relay agent is disabled on the interface. • HP does not recommend enabling the DHCPv6 relay agent and DHCPv6 client on the same interface Configuration procedure To configure the DHCPv6 relay agent: Step 1. Enter system view. 2. Enter interface view. Command system-view interface interface-type interface-number 3. Enable DHCPv6 relay agent ipv6 dhcp relay server-address on the interface and specify a ipv6-address [ interface interface-type DHCPv6 server. interface-number ] Remarks N/A N/A By default, DHCPv6 relay agent is disabled and no DHCPv6 server is specified on the interface. 111