[j-nsp] DHCP IPv6

[Miquel van Smoorenburg]

On 7-10-11 8:25 PM, Amos Rosenboim wrote:
> Hi Paul,
>
> The Junos DHCPv6 implementation does not support DHCPv6 IA requests
> as sent by users. It supports DHCPv6 PD (prefix delegation) for
> allocating prefixes to downstream routers.
>
> However you don't really need DHCPv6 to assign users with IP
> addresses. All you need to do enable router advertisements for the
> relevant LAN interface where your users will connect. The only
> problem is that router advertisement doesn't provide users with DNS
> information. For this you need to enable the "other config" flag in
> router advertisement and configure a DHCPv6 with just DNS
> information.

If the transport to the customer is ethernet-based, and the device at 
the customer premises is a simple bridge, then this is a possibility.

However the customer probably uses a router rather than a simple bridge 
(you said SRX/J), so you need at least a /64 routed to the customer to 
use on the LAN side interface of their router.

The only options you have is to either run a routing protocol (BGP), or 
DHCPv6 prefix delegation.

However as I understand it, SRX or J series do not have support for 
client-side DHCPv6 PD. Google tells me that some forums have rumors of 
this being added somewhere next year...

We run IPv6 in production for lots of ADSL/VDSL/FTTH customers, and we 
use DHCPv6 PD. The routers on our side are Juniper E320s, the CPEs are 
mostly fritzboxes (though draytek/cisco/some others works too).

See also RFC6204, look at what requirement W-4 says.

Mike.