nanog mailing list archives
Sprint's route filters and Europe
From: Daniel Karrenberg <Daniel.Karrenberg () ripe net>
Date: Tue, 04 Jun 1996 10:04:40 +0200
> "Alex.Bligh" <amb () Xara Net> writes: > Sorry I wasn't clear. If you have a /19 allocated in the RIPE database then > for obvious reasons you have to put a /19 route (not a /18) route in the > RIPE database. To get ANS to accept this you have to announce a /19 route > for this. This got filtered by Sprint. OK so far. > Before Sprint's (much welcomed - thanks Sean) change of heart, you could > get around this if you were the lower /19 in the block by also making > a /18 advert. As the other half of the /18 was unused normally, this > makes no difference to anyone except those in the /19 suddenly get > Sprint connectivity. Since this means announcing routes to address space not allocated to you it is dubiuous to say the least. > Actually it was likely to be of benefit to > any future holder of the upper half of the /18 as that would have > been the only way they would have gained Sprint connectivity (effectively > the holder of the lower half gives them partial transit to the point > where the upper /19 advert hits the /18 route to Sprint). This possibly > slightly naughty but oh-so-tempting hack would have meant that European > local IRs were likely to announce a /18 and a lower /19, and an upper > /19 rather than just two /19s. So Sprint would see one /18 and get > suboptimal routing, everyone else would see 3 adverts rather than 2. > > Hope that makes sense. Technically I understand what you are saying. Whether "it makes sense" is another matter. > Anyway, all sorted out now Sprint have changed their policy. Glad > the world has seen sense (i.e. RIPE and Sprint have agreed on the > same size - whether it was /18 or /19 didn't matter to me, just > as long as it was consistent). Yes indeed. Daniel - - - - - - - - - - - - - - - - -
Current thread:
- Sprint's route filters and Europe Michael Dillon (Jun 02)
- <Possible follow-ups>
- Re: Sprint's route filters and Europe Stan Barber (Jun 02)
- Re: Sprint's route filters and Europe Michael Dillon (Jun 02)
- Re: Sprint's route filters and Europe Alex.Bligh (Jun 03)
- Sprint's route filters and Europe Daniel Karrenberg (Jun 03)
- Re: Sprint's route filters and Europe Alex.Bligh (Jun 03)
- Sprint's route filters and Europe Daniel Karrenberg (Jun 04)
- Re: Sprint's route filters and Europe Michael Dillon (Jun 02)
- Re: Sprint's route filters and Europe Curtis Villamizar (Jun 03)
- Re: Sprint's route filters and Europe Alex.Bligh (Jun 04)
- Sprint's route filters and Europe Daniel Karrenberg (Jun 03)
- Re: Sprint's route filters and Europe Michael Dillon (Jun 03)
- Sprint's route filters and Europe Daniel Karrenberg (Jun 03)
- Re: Sprint's route filters and Europe Mike Norris (Jun 04)
- Re: Sprint's route filters and Europe David R. Conrad (Jun 17)
- Re: Sprint's route filters and Europe Brian Carpenter CERN-CN (Jun 17)