Filter
Top Products
DES-7200 Configuration Guide Chapter 9 DHCPv6 Relay Agent Configuration
9-4
The Figure-3 shows the detailed process that the DHCPv6 Client forwards the
packet, obtains the IPv6 address and other configuration parameters through
the DHCPv6 Relay Agent:
1. The DHCPv6 Client sends the DHCPv6 request packets to FF02::1:2, the
multicast address for all DHCPv6 server and Relay Agent in the link;
2. After receiving the DHCPv6 request packets from the Client, the DHCPv6
Relay Agent encapsulates the packets in the Relay Message Option of the
Relay-forward packet and sends the Relay-forward packet to the specified
DHCPv6 server;
3. The DHCPv6 server resolutes the Client request from the Relay-forward
packet, sets the IPv6 address and other parameters for the Client,
encapsulates the reply packet into the Relay Message Option of the
Relay-reply packet and sends the Relay-reply packet to the DHCPv6 Relay
Agent;
4. The DHCPv6 Relay Agent resolutes the Relay-reply packet from the
DHCPv6 Server and forwards them to the DHCPv6 Client;
5. The DHCPv6 Client configures the network according to the IPv6 address
allocated by the DHCPv6 Server and other parameters;
6. The working process of the address lease/re-binding/release for the
DHCPv6 Client and the refresh for the DHCPv6 Server is similar to the one
of Relay Agent.
Note
According to the RFC3315, the address FF02::1:2 is the
multicast address for all DHCPv6 Server and the Relay Agent in
the link. That is to say, all DHCPv6 Server or Relay Agent in the
link shall deal with the DHCPv6 request packets sent from that
address.
9.1.5 Protocol and
Standard
The related protocol and standard is:
RFC3315 Dynamic Host Configuration Protocol for IPv6 (DHCPv6)
9.2 Default Configuration
Function Default value
DHCPv6 Relay Agent
Disabled