On Wed, Dec 18, 2013 at 09:11:46AM -0700, Cliff Bowles wrote: > Question: will carriers accept IPv6 advertisements smaller than /48?
Not generally, no. > Our org was approved a /36 based on number of locations. The bulk of > those IPs will be in the data centers. As we were chopping up the > address space, it was determined that the remote campus locations > would be fine with a /60 per site. (16 networks of /64). There are > usually less than 50 people at the majority of these locations and > only about 10 different functional VLANs (Voice, Data, Local > Services, Wireless, Guest Wireless, etc...). > > Now, there has been talk about putting an internet link in every > campus rather than back hauling it all to the data centers via > MPLS. However, if we do this, then would we need a /48 per campus? > That is massively wasteful, at 65,536 networks per location. Is the > /48 requirement set in stone? Will any carriers consider longer > prefixes? /48 per site is the standard. > I know some people are always saying that the old mentality of > conserving space needs to go away, but I was bitten by that IPv4 > issue back in the day and have done a few VLSM network > overhauls. I'd rather not massively allocate unless it's a > requirement. You need to throw out all old thinking in terms of what happened in IPv4. Current ARIN policy allows a /48 per site and that is how you should architect the network.