nanog mailing list archives
Re: Re: Why do ROV-ASes announce some invalid route?
From: 孙乐童 <slt20 () mails tsinghua edu cn>
Date: Thu, 10 Nov 2022 10:59:51 +0800 (GMT+08:00)
Hello Job, Thank you very much for your reply! I got that no AS can actually filter all the invalids. Yet I was trying to figure out why we couldn't see reasonable amount of withdrawals from AS6939 about invalid prefixes, as they explained how they implement ROV (https://mailman.nanog.org/pipermail/nanog/2020-June/108309.html). Perhaps we need to learn their detailed implementations. Thank you very much! Best wishes, Sun Letong 在2022-11-08 00:11:24,Job Snijders<job () fastly com>写道:
Dear 孙乐童, On Mon, Nov 07, 2022 at 08:40:57PM +0800, 孙乐童 wrote:We learned from Cloudflare's https://isbgpsafeyet.com/ that some ASes have deployed RPKI Origin Validation (ROV). However, we downloaded BGP collection data from RouteViews and RipeRis platforms and found that some ROV-ASes can announce some invalid routes. For example, from RIB data at 2022-10-31 00:00:00, 13 out of 17 ASes which declared to deploy ROV announced invalid routes, and we list the number of related prefixes for each AS below. [snip] As a comparison, we count the invalid routes the non-ROV ASes (also declared in https://isbgpsafeyet.com/) announces, as below: We can see that ROV ASes announced apparently fewer invalid routes compared to the non-ROV ASes, though they did not filter all the invalids. [snip] Can anyone help us to correctly interpret this case? Thank you very much.You ask great questions! I hope an answer to your questions can be found in a message I sent a year ago: https://mailman.nanog.org/pipermail/nanog/2021-April/213346.html The summary: in any sufficiently large network, chances are not 100% of all equipment supports RPKI-based BGP Route Origin Validation; in such cases a handful of invalid routes may still percolate through the system. Another contributing factor might be certain types of software upgrades; where ROV temporarily is disabled on one or more devices. Or perhaps an ISP made a handful of exceptions for test/beacon invalid routes to propagate. Kind regards, Job
Current thread:
- Why do ROV-ASes announce some invalid route? 孙乐童 (Nov 07)
- Re: Why do ROV-ASes announce some invalid route? Job Snijders via NANOG (Nov 07)
- Re: Re: Why do ROV-ASes announce some invalid route? 孙乐童 (Nov 10)
- Re: Re: Why do ROV-ASes announce some invalid route? Christopher Morrow (Nov 11)
- Re: Re: Why do ROV-ASes announce some invalid route? Lukas Tribus (Nov 11)
- Re: Why do ROV-ASes announce some invalid route? Randy Bush (Nov 11)
- RE: Why do ROV-ASes announce some invalid route? Zhuangshunwan via NANOG (Nov 12)
- Re: Re: Why do ROV-ASes announce some invalid route? Christopher Morrow (Nov 13)
- Re: Re: Why do ROV-ASes announce some invalid route? 孙乐童 (Nov 10)
- Re: Why do ROV-ASes announce some invalid route? Job Snijders via NANOG (Nov 07)