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Forum Discussion

futelihut's avatar
futelihut
Aspirant
Apr 04, 2019

IPv6 DHCPv6 Prefix Delegation

Hi   My ISP requires Prefix Delegation for IPv6 support.   Is there a way to configure the RBK50 router to fetch prefix delegation from my ISP? Or is it not supported?   /Morten  
futelihut's avatar
futelihut
Aspirant
Apr 05, 2019

Hi

 

Thanks for the reply. My ISP do not support PPPoE, they uses direct connection.

 

From the information I have been given, the router must support prefix delegation over DHCP. But setting it to DHCP do nothing.

I will try to contact NG support

 

/Morten

ekhalil's avatar
ekhalil
Master
Apr 07, 2019

Orbi supports prefix delegation.

Please check th configuration below:

 

root@RBR50:/etc# cat dhcp6c.conf
interface wanifname {
             send ia-na 1;
             send ia-pd 11;
             request domain-name;
             request domain-name-servers;
             request ntp-servers;
             request sip-server-domain-name;
             request sip-server-address;
             script "/etc/net6conf/dhcp6c-script";
};

id-assoc na 1 {
};

id-assoc pd 11 {
};
root@RBR50:/etc#

 

DHCPv6 prefix delegation operates as follows:

  1. A delegating router (Server) is provided with IPv6 prefixes to be delegated to requesting routers.
  2. A requesting router (Client) requests one or more prefixes from the delegating router.
  3. The delegating router (Server) chooses prefixes for delegation, and responds with prefixes to the requesting router (Client).
  4. The requesting router (Client) is then responsible for the delegated prefixes.
  5. The final address allocation mechanism in the local network can be performed with SLAAC or stateful/stateless DHCPv6, based on the customer preference. At this step the key thing is the IPv6 prefix and not how it is delivered to end systems.