Hi, On 02/01/2015 01:33, Alexander Neilson wrote:
I wondered if anyone on here had any guidance on any current BCP (or BCOP) or some general guidance on IPv6 allocations to customers (I am speaking here only for casual day to day allocations to customers)
The BCP is http://tools.ietf.org/html/rfc6177
Looking through email archives and discussions that have seen around there was fairly vigorous discussions but no real resolutions. I have seen suggestions of /48, /50, /56. I am inclined to allocate /56’s to each customer (providing 256 /64’s). I don’t want to prevent customers from having the flexibility to do what they need / want to do nor stymie future use cases.
If there is some good guidance on a need for /48’s then I will look at it and will use those if needed.
RFC6177 suggests flexibility. /48s are not rare commodities - we have trillions of them, quite literally. So I've never seen any risk in handing them out to small customers, but unless you are fortunate enough to have a small customer grow into a very big customer, I guess there's no risk in /56s either.
Also, is current operating practice amongst others for all links to be /64’s even for p2p links? It seems a lot of documentation / reference texts are a few years old now and some providers have told me that this advice is no longer current but I haven’t yet seen this codified.
For that see http://tools.ietf.org/html/rfc6164 . As far as I know /127 has become the majority solution. Brian
My /32 allocation is provisionally as follows: 16 bits of /56 allocations - 65,535 customer allocations 8 bits for internal (leaves me 255 /64’s for p2p links between routers)
Currently using PPPoE for IPv4 authentication for bulk customers and bespoke routed configurations for the rest. I intend to continue the PPPoE at this stage and just provide dual stack to every customer when connecting.
I am still open to any input people have or feedback about what contributed to their deployments.
I have looked into archives but was unable to find clear guidance that wasn’t discussed at length to be out of date / disputed so I am primarily looking for what the current best practice is so I can take advantage of the best advise for rolling out the deployment (I know we are late to this party but better late than never)
Regards Alexander
Alexander Neilson Neilson Productions Limited
alexander(a)neilson.net.nz 021 329 681 022 456 2326
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