On 7 May 2020, at 11:32, Aled Morris <[email protected]<mailto:[email protected]>> wrote:
On Thu, 7 May 2020 at 11:19, Paul Bone <[email protected]<mailto:[email protected]>> wrote: The example of Universities with a /16 that have not implemented IPv6 because they have not needed to is just one example of the scale of the problem. I'm interested to know which Universities have not implemented IPv6 There’s only a dozen or so universities that have any form of significant IPv6 deployment. Imperial College are the “flagship” deployment; they are 100G connected to Janet and commonly ship several 10’s of Gbit/s of IPv6 data transfers, particularly from CERN. Their new compute cluster and research file store is IPv6-only, internally. I doubt there's a correlation between owning legacy IPv4 space and not implementing IPv6. The organisations I've dealt with who have no interest in IPv6 also have very little IPv4 address space and use RFC1918 extensively internally. The problem seems to be that networking is rarely their core function - they are in some other industry and the amount of expertise they have for networking is spread thin, which limits their ability to embrace change. Their engineers don't attend UKNOF, they aren't in our sphere of influence, they barely realise IPv6 is a thing - to them it's some research project that someone mentioned once. Until their customers demand it, they won't react. They might as well engrave "If it aint broke, don't fix it" on their computer room door. Well, universities and colleges will teach networking; there’s at least an argument there that IPv6 is desirable to support teaching as well as research. I’d consider it odd to have (say) computer science graduates that have not been exposed to Ipv6 on campus during their studies, or maybe that’s part of the problem? One of the drivers for IPv6 adoption at universities is the CERN experiments; there’s about 20 universities who are deploying or have deployed IPv6 in support of that, given the community (WLCG) mandated IPv6. Around 80% of the storage is now IPv6-enabled, I believe. There was a talk about this at UKNOF not long ago. They’re now looking at where IPv4 can be turned off, and when. Tim
