On Tue, Sep 24, 2013 at 9:49 AM, Nathanael C. Cariaga <nccariaga@stluke.com.ph> wrote:
I've been Google-ing about if there is such a standard that sets the minimum IPv6 advertisement on BGP. My concern is that I am running a network that is operating on multiple sites and currently rolling out our IPv6 on the perimeter level. Having to get our /48 allocation from our RIR, I figured out I would it would be best for us to break down the /48 into smaller chunks (i.e /56s) and farm it out to our sites since a single /48 will be very big for our single site.
Hi Nathanael, Many if not most networks set a limit at /48. Verizon was the last player of consequence to filter at /32, and they moved to /48 a couple years ago. A few also try to limit advertisements within ISP space nearer to /32. Usually not at /32, but a /48 announcement within space allocated to an ISP won't necessarily be honored. If you have distinct networks with distinct routing policies (or can make a reasonable claim to such) and your RIR is ARIN, you can request a block size large enough to provide a /48 to each distinct network. A /44 or whatever. Search through the ARIN NRPM for details. I don't know about the other RIRs; someone in your region (Asia Pacific?) will know. Regards, Bill Herrin -- William D. Herrin ................ herrin@dirtside.com bill@herrin.us 3005 Crane Dr. ...................... Web: <http://bill.herrin.us/> Falls Church, VA 22042-3004