User's Manual

30-8
Switch2 configuration：
Switch2>enable
Switch2#config
Switch2(config)#service dhcpv6
Switch2(config)#interface vlan 1
Switch2(Config-if-Vlan1)#ipv6 address 2001:da8:1:1::2/64
Switch2(Config-if-Vlan1)#exit
Switch2(config)#interface vlan 10
Switch2(Config-if-Vlan10)#ipv6 address 2001:da8:10:1::2/64
Switch2(Config-if-Vlan10)#exit
Switch2(config)#interface vlan 100
Switch2(Config-if-Vlan100)#ipv6 address 2001:da8:100:1::1/64
Switch2(Config-if-Vlan100)#no ipv6 nd suppress-ra
Switch2(Config-if-Vlan100)#ipv6 nd managed-config-flag
Switch2(Config-if-Vlan100)#ipv6 nd other-config-flag
Switch2(Config-if-Vlan100)#ipv6 dhcp relay destination 2001:da8:10:1::1
Switch2(Config-if-Vlan100)#exit
Switch2(config)#
Example2:
When the network operator is deploying IPv6 networks, network automatically configuration can be achieved
through the prefix delegation allocation of IPv6 addresses, in stead of configuring manually for each switch:
1. To configure the switching or routing device which is connected to the client switch as DHCPv6
prefix delegation server, that is to setup a local database for the relationship between the allocated
prefix and the DUID of the client switch.
2. To configure the switch as the prefix delegation client, and make the client switch to get IPv6
address prefix from the prefix delegation server, through a process which is much like the process
of DHCPv6 address allocation.
3. The edge devices which receive the address prefix, send routing advertisement - RA messages, to
the client hosts about the address prefix through the interface which is connected to the hosts, then
the hosts get an valid IPv6 address through stateless auto configuration, while at the same time, the
stateless DHCPv6 server will be configured for the interface, in order to provide the DHCPv6 client
with information such as DNS, and domain name, etc.
Network Topology:
The edge switch is a Switch1 switch. The interface connected to the trunk switch which is Switch2, is
configured as the prefix delegation client. The interfaces connected to hosts, are configured as stateless
DHCPv6 servers to provide the hosts with stateless information such as DNS and domain names, also routing
advertisement of stateless address allocation is enabled for the host interfaces; On Switch2, the prefix
delegation server is configured, and routing advertisement of state address allocation is enabled; On the host
side, DHCPv6 client capable operating system such Windows Vista should be installed.