Juniper JUNOSE SOFTWARE 11.0.X - BROADBAND ACCESS CONFIGURATION GUIDE 4-1-2010 Configuration Manual page 145

prefixes to requesting routers. If you configured an interface for prefix delegation,
the prefix assigned to that interface takes precedence over the prefix or range of
prefixes configured at the router level in an IPv6 local pool.
To configure an IPv6 local address pool to be used for DHCPv6 prefix delegation:
Enable the IPv6 local address pool to assign prefixes to the requesting router.
1.
host1(config)#ipv6 address-pool local
Configure the name of the IPv6 local address pool from which the delegating
2.
router assigns prefixes to the DHCPv6 client or requesting router.
host1(config)#ipv6 local pool dhcpv6pd_pool
NOTE: You must enable the IPv6 local address pool feature to be able to configure
IPv6 local address pools.
Specify the IPv6 prefix range from which prefixes can be delegated to the DHCPv6
3.
client. You can specify the prefix range in one of the following ways:
Configure the prefix range by specifying an IPv6 prefix and the length of the
prefix to be delegated. This prefix length is also called the assigned prefix
length.
host1(config-v6-local)#prefix 2002:2002::/32 48
In this case, the starting and ending prefixes of the range are implicitly
specified. In this example, the start of the range is 2002:2002::/48 and the
end of the range is 2002:2002:ffff::/48. All prefixes assigned from this range
have 48 as the prefix length.
Alternatively, configure the prefix range by specifying the starting and ending
IPv6 prefixes of the range.
host1(config-v6-local)#prefix 3003:3003::/56 3003:3003:0:1000::/56
In this case, the starting and ending prefixes of the range are explicitly
specified. In the preceding example, a prefix range is configured with 16
prefixes that can be allocated to clients. All prefixes assigned from this range
have 56 as the prefix length. When you specify the prefix range in this way,
you must ensure that the starting and ending prefixes are of the same length.
Specify the time period when the requesting router can use the prefix. You can
4.
configure a preferred lifetime or a valid lifetime for the requesting router to use
when you configure the prefix range. If no lifetime is specified when you configure
the prefix range, the default lifetime of 1 day is assigned.
NOTE: The preferred lifetime must be less than or equal to the valid lifetime.
Chapter 1: Configuring Remote Access
Configuring the DHCPv6 Local Address Pools
105