Supported Platforms
Related Documentation
Multiple Address Assignment for DHCPv6 Clients
Subscriber management enables you to assign multiple addresses to a single DHCPv6 client. Multiple address support is enabled by default, and is activated when the DHCPv6 local server receives a DHCPv6 Solicit message from a subscriber that contains multiple addresses.
For example, you might use the multiple address assignment feature in a networking environment in which a customer premises equipment (CPE) device requires a host address and a delegated prefix. In such an environment, you can configure subscriber management to assign both a DHCPv6 IA_NA (Identity Association for Non-Temporary Addresses) and an IA_PD (Identity Association for Prefix Delegation) address to the client (the CPE device).
Multiple Address Assignment Using Local Address Pools or RADIUS
You can use either local address pools or RADIUS when assigning multiple addresses to a DHCP client. When at least one address is successfully allocated, the router creates a subscriber entry and binds the entry to the assigned address. If both addresses are successfully allocated, the router creates a single subscriber entry and binds both addresses to that entry.
You can also configure a delegated address pool, which explicitly specifies the address pool that subscriber management uses to assign IPv6 prefixes for subscribers.
Junos OS Predefined Variable for Multiple DHCPv6 Address Assignment
Subscriber management provides a predefined variable that you can use to dynamically configure DHCPv6 multiple address assignment. You apply the Junos OS predefined variable, $junos-subscriber-ipv6-multi-address, as a demux source address in a dynamic profile. When the dynamic profile is attached to a subscriber, the variable is expanded to include both the host and prefix addresses. You use this variable instead of the $junos-subscriber-ipv6-address variable, which supports a single IPv6 address.
You include the $junos-subscriber-ipv6-multi-address variable at the [edit dynamic-profile profile-name interfaces interface-name unit logical-unit-number family inet6 demux-source] hierarchy level.
