North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: IPv6 Advertisements
Thus spake "Brandon Butterworth" <[email protected]> > Don't give people an excuse to deagg their /32 The general rule, for both v4 and v6, is that people should filter on whatever the minimum allocation/assignment size for each RIR block. It's also been suggested that you accept a few more bits for routes with a short AS_PATH length to help with TE, but that's optional. Someone recently posted a link (either on PPML or here -- I can't find it now) that showed ARIN's minima for the various v4 and v6 blocks. The v4 ones were all over the map, but there are relatively few v6 blocks and all of them are /32 except for one that's /48. The upside is that in the block you're expected to accept /48s, nobody will have a /32. The downside is that anyone who gets a larger-than-minimum sized allocation/assignment can deaggregate down to that level. S Stephen Sprunk "Those people who think they know everything CCIE #3723 are a great annoyance to those of us who do." K5SSS --Isaac Asimov
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