It's not required to have DOCSIS 3.1 to have 100Mbit/s symmetry, 3.0 can provide that.
Vodafone in Spain has a mixture of HFC footprint (the widest), its own small FTTH footprint, and Telefonica (Spain's DTAG) wholesale FTTH. Prices and speeds for the three of them are the same, but if you are on an FTTH zone you get symmetric upload speeds, while on HFC zones they provide 100Mbit/s upload with all their plans (min download is also 100MBit/s).
They argue they will be able to have symmetry on 1Gbit on HFC when they complete their DOCSIS 3.1 rollout, but that has been going on for years with no news. Ironically their own FTTH footprint is pretty small so they end up, in most cases, providing better upload speeds when reselling Telefonica infrastructure than with their own.
They argue they will be able to have symmetry on 1Gbit on HFC when they complete their DOCSIS 3.1 rollout, but that has been going on for years with no news. Ironically their own FTTH footprint is pretty small so they end up, in most cases, providing better upload speeds when reselling Telefonica infrastructure than with their own.