Arista/Cisco have commands like this: ipv6 dhcp relay install routes
You place on the interface to make this happen. - Jared > On Jan 16, 2020, at 11:27 AM, Chris Gross <[email protected]> wrote: > > In my environment I’ve been running Kea dhcp6 against Ciscos of varying > platform (7600, ASR920, etc) and just them as a relay. In this case, the > Cisco itself is installing a route as it snoops the relay action > automatically. This was one of the harder things to wrap my head around > before just slapping it in to see what happened and bam, routes. Router gets > a WAN IP from the loopback via DHCPv6 as well, then gets PD assigned after. > > interface Loopback10 > vrf forwarding CGNAT > no ip address > ipv6 address 2001:DB8::1/64 > ! > interface VlanXXXX > vrf forwarding CGNAT > ip address 100.64.Y.Z 255.255.252.0 > ip helper-address global 10.0.Y.Z > ip helper-address global 10.0.Y.Z > ip flow ingress > load-interval 30 > ipv6 address FE80::1 link-local > ipv6 enable > ipv6 nd router-preference High > ipv6 dhcp relay destination 2001:DB8:0:A::BEEF source-address 2001:DB8:YZ01::1 > ipv6 dhcp relay destination 2001:DB8:0:B::BEEF source-address 2001:DB8:YZ01::1 > > S 2001:DB8:YZ00:3F00::/56 [1/0] > via FE80::4665:7FFF:FE14:EDC2, VlanXXXX > > Chris Gross > Network Architect > > From: NANOG <[email protected]> On Behalf Of Brandon Price > Sent: Wednesday, January 15, 2020 9:01 PM > To: nanog list <[email protected]> > Subject: IPv6 Prefix Delegation to customers. > > CAUTION: This email originated from outside NineStar Connect. Do not click > links or open attachments unless you recognize the sender and know that the > content is safe. If you have any concerns, click here to open a ticket with > the NetAdmin team. > > > Hey Nanog, > > I am in the process of building out a FTTH proof of concept, and I would > really like to offer each of my customers a /48 of IPv6. > I’ve been able to announce my /32 to my upstreams, dual-stack all of my > internal infrastructure no-problem, build v6 recursive name servers, etc. > This was fairly straight-forward. > > Where I am struggling is the Prefix Delegation part. How are most folks > getting the PD subnets into their IGPs? In my environment I don’t run the > DHCP server process on the router that is directly connected to the clients. > I have seen documentation that cisco and juniper DHCPv6 processes are smart > enough to insert that prefix into the routing table when they hand it out, > but how is this handled in an environment with a central DHCP server? I do > not currently run any PPPOE in my environment and I don’t use RADIUS for the > subscriber management. I would really just like to stick to DHCP ideally. > > If anyone has any pointers, I would appreciate it. > > Brandon Price > Senior Network Engineer > City of Sherwood, Sherwood Broadband > Desk: 503.625.4258 > Cell: 971.979.2182 > > This email may contain confidential information or privileged material and is > intended for use solely by the above referenced recipient. Any review, > copying, printing, disclosure, distribution, or other use by any other person > or entity is strictly prohibited and may be illegal. If you are not the named > recipient, or believe you have received this email in error, please > immediately notify the City of Sherwood at (503) 625-5522 and delete the copy > you received.
