nanog mailing list archives
Re: Policy Statement on Address Space Allocations
From: "Robert A. Rosenberg" <hal9001 () panix com>
Date: Wed, 31 Jan 1996 03:19:00 -0500
At 5:48 1/30/96, Alex.Bligh wrote:
Thankyou for the first constructive workable suggestion had so far. However, this has two problems.
You're welcome.
a) RIPE fidn't give me the first /19 in a shorted prefix block ( its x.x.160.x and .192.x is used), but no matter, I'll renumber if necessary :-( or persuade them to give me a /18 as well so I can do the above (hopefully).
My convert the /19 to an /18 was a way to get minimal extra announcements. Getting a new /19 and keeping the first 3 /21s for your own use and giving them the 4th, still adds only one EXTRA announcement (over the need to announce the [new] /19 itself).
b) The /21 advert may be inbound filtered by a.n.other, which will be fine if it has an AS-Path through me (as the less specific route will work the same way) but won't when that path goes through the other provider with whom they are multi-homed, as the /21 will disappear entirely (3rd parties, i.e. a.n.other's customers will see neither), the /19 will be the only thing that is visible, and I'll just black hole their packets.
As a Multi-Home (as opposed to a Private) /21 it should (theoretically) be entitled to being added to the filter lists as valid - Getting this done is a political problem. You should not be black holing the packets since your receipt of them is VALID (since they are Multi-Homed as opposed to having walked with the block).
Current thread:
- Re: Policy Statement on Address Space Allocations, (continued)
- Re: Policy Statement on Address Space Allocations Iljitsch van Beijnum (Jan 30)
- Re: Policy Statement on Address Space Allocations Dave Siegel (Jan 30)
- Re: Policy Statement on Address Space Allocations Iljitsch van Beijnum (Jan 30)
- Re: Policy Statement on Address Space Allocations marthag (Jan 30)
- Re: Policy Statement on Address Space Allocations Curtis Villamizar (Jan 31)
- Re: Policy Statement on Address Space Allocations Scott Huddle (Jan 30)
- Re: Policy Statement on Address Space Allocations Geoff Huston (Jan 30)
- Re: Policy Statement on Address Space Allocations Iljitsch van Beijnum (Jan 30)
- Re: Policy Statement on Address Space Allocations Brett D. Watson (Jan 30)
- Re: Policy Statement on Address Space Allocations Vadim Antonov (Jan 30)
- Re: Policy Statement on Address Space Allocations Robert A. Rosenberg (Jan 31)
- Re: Policy Statement on Address Space Allocations Robert A. Rosenberg (Jan 31)
- Re: Policy Statement on Address Space Allocations Christian Huitema (Jan 31)
- Re: Policy Statement on Address Space Allocations Yakov Rekhter (Jan 31)
- Re: Policy Statement on Address Space Allocations George Herbert (Jan 31)
- Re: Policy Statement on Address Space Allocations Yakov Rekhter (Jan 31)
- Re: Policy Statement on Address Space Allocations Noel Chiappa (Jan 31)
- Re: Policy Statement on Address Space Allocations Jon Zeeff (Jan 31)
- Re: Policy Statement on Address Space Allocations Noel Chiappa (Jan 31)
- Re: Policy Statement on Address Space Allocations Noel Chiappa (Jan 31)
- Re: Policy Statement on Address Space Allocations Sean Doran (Jan 31)
- Re: Policy Statement on Address Space Allocations George Herbert (Jan 31)
- Re: Policy Statement on Address Space Allocations Dennis Ferguson (Jan 31)
- Re: Policy Statement on Address Space Allocations George Herbert (Jan 31)
(Thread continues...)