Hi All,
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Kind regards, Warrick Mitchell (He/Him) • Director of Architecture ______________________________________________________
AARNet Pty Ltd m: +61 416 089 354 e: warrick.mitchell@aarnet.edu.aumailto:warrick.mitchell@aarnet.edu.au w: aarnet.edu.auhttps://www.aarnet.edu.au/ ______________________________________________________ Important: This email and any files transmitted with it are confidential, and the rights of confidentiality in such information are not waived or lost by its mistaken delivery to you. Any dissemination, copying, use or disclosure of the email and/or such files without the permission of AARNet, or the sender, is strictly prohibited. If you have received this email in error, please contact the sender immediately and delete all copies of this transmission.
Hi All,
Thank you to those who jumped on the call via the new zoom id, it is appreciated.
Notes from today’s call:
APAN Review – Warrick provided an overview of the routing working group meeting in Yokohama Japan. It was a great session kicked off by Thomas from Internet2 talking about how we all rely on each other to build our R&E global backbone and the routing improvements being made. Brenna provided an overview of the cases the working group had been working on and re-iterated the theme of the talks that week, resilience – we all need to work together. This then led into a discussion around reviewing the tooling available to help up lift your network, in which Warrick asked for ASN’s from the audience to use as real world examples in tooling. It was great to see the participation at Yokohama.
Routing Leaks – We briefly spoke about the Kentik blog report describing a route leak. It’s worth a read to understand what occurred and for us to check if we saw this issue within our networks.
Internet2 Routing Policy Update – Steve Wallace gave an update on Internet2’s routing policy and provided people with a link https://docs.google.com/document/d/12z-019wD73aKcrhj0zCDqCOGvCN42tRLgdhKWhWS...
This led into a discussion about how Steve and team are testing and collecting the data to determine who is utilising R&E over commodity within our community.
Jeff Bartig also showed a slide highlighting out of 2600~ R&E origin AS’s, only 27 are peered with Routeviews and RIPE which is 1%. However more ASN’s have RIPE atlas probes deployed (approximately 8% of the origin ASN’s). This is why they are having to rely on active polling.
AoB: There was nothing else brought up to be discussed, so we ended the meeting.
Kind regards, Warrick Mitchell (He/Him) • Director of Architecture ______________________________________________________
AARNet Pty Ltd m: +61 416 089 354 e: warrick.mitchell@aarnet.edu.aumailto:warrick.mitchell@aarnet.edu.au w: aarnet.edu.auhttps://www.aarnet.edu.au/ ______________________________________________________ Important: This email and any files transmitted with it are confidential, and the rights of confidentiality in such information are not waived or lost by its mistaken delivery to you. Any dissemination, copying, use or disclosure of the email and/or such files without the permission of AARNet, or the sender, is strictly prohibited. If you have received this email in error, please contact the sender immediately and delete all copies of this transmission.
Thanks for taking notes Warrick!
Link to the Kentik blog mentioned: https://www.kentik.com/blog/beyond-their-intended-scope-ddos-mitigation-leak...
-Hans
From: Warrick Mitchell Warrick.Mitchell@aarnet.edu.au Sent: Tuesday, April 15, 2025 8:54 PM To: routing-wg@lists.gna-g.net Subject: [Routing-wg] Re: Routing Working Group Call - Now
Hi All,
Thank you to those who jumped on the call via the new zoom id, it is appreciated.
Notes from today's call:
APAN Review - Warrick provided an overview of the routing working group meeting in Yokohama Japan. It was a great session kicked off by Thomas from Internet2 talking about how we all rely on each other to build our R&E global backbone and the routing improvements being made. Brenna provided an overview of the cases the working group had been working on and re-iterated the theme of the talks that week, resilience - we all need to work together. This then led into a discussion around reviewing the tooling available to help up lift your network, in which Warrick asked for ASN's from the audience to use as real world examples in tooling. It was great to see the participation at Yokohama.
Routing Leaks - We briefly spoke about the Kentik blog report describing a route leak. It's worth a read to understand what occurred and for us to check if we saw this issue within our networks.
Internet2 Routing Policy Update - Steve Wallace gave an update on Internet2's routing policy and provided people with a link https://docs.google.com/document/d/12z-019wD73aKcrhj0zCDqCOGvCN42tRLgdhKWhWS...
This led into a discussion about how Steve and team are testing and collecting the data to determine who is utilising R&E over commodity within our community.
Jeff Bartig also showed a slide highlighting out of 2600~ R&E origin AS's, only 27 are peered with Routeviews and RIPE which is 1%. However more ASN's have RIPE atlas probes deployed (approximately 8% of the origin ASN's). This is why they are having to rely on active polling.
AoB: There was nothing else brought up to be discussed, so we ended the meeting.
Kind regards, Warrick Mitchell (He/Him) * Director of Architecture ______________________________________________________
AARNet Pty Ltd m: +61 416 089 354 e: warrick.mitchell@aarnet.edu.aumailto:warrick.mitchell@aarnet.edu.au w: aarnet.edu.auhttps://www.aarnet.edu.au/ ______________________________________________________ Important: This email and any files transmitted with it are confidential, and the rights of confidentiality in such information are not waived or lost by its mistaken delivery to you. Any dissemination, copying, use or disclosure of the email and/or such files without the permission of AARNet, or the sender, is strictly prohibited. If you have received this email in error, please contact the sender immediately and delete all copies of this transmission.
Thanks for the notes, Warrick.... :-)
As with Tim, 1am BST was a bit late for me, sorry.
I'm more than happy to host more multi-hop BGP sessions from the R&E community, if these routing table views (and the MTRs from Uni of Oregon to the R&E network) are useful for general diagnosis. What I've got is displayed in the map here (we added PREGINET recently):
but would love to hear from other R&E networks too.
Thanks!
philip --
Warrick Mitchell wrote on 16/4/2025 01:54:
Hi All,
Thank you to those who jumped on the call via the new zoom id, it is appreciated.
Notes from today’s call:
*APAN Review*– Warrick provided an overview of the routing working group meeting in Yokohama Japan. It was a great session kicked off by Thomas from Internet2 talking about how we all rely on each other to build our R&E global backbone and the routing improvements being made. Brenna provided an overview of the cases the working group had been working on and re-iterated the theme of the talks that week, resilience – we all need to work together. This then led into a discussion around reviewing the tooling available to help up lift your network, in which Warrick asked for ASN’s from the audience to use as real world examples in tooling. It was great to see the participation at Yokohama.
*Routing Leaks*– We briefly spoke about the Kentik blog report describing a route leak. It’s worth a read to understand what occurred and for us to check if we saw this issue within our networks.
*Internet2 Routing Policy Update*– Steve Wallace gave an update on Internet2’s routing policy and provided people with a link https:// docs.google.com/document/d/12z-019wD73aKcrhj0zCDqCOGvCN42tRLgdhKWhWS3C0/ edit?tab=t.0#heading=h.a5ld5ujhtxyu <https://docs.google.com/document/ d/12z-019wD73aKcrhj0zCDqCOGvCN42tRLgdhKWhWS3C0/edit? tab=t.0#heading=h.a5ld5ujhtxyu>
This led into a discussion about how Steve and team are testing and collecting the data to determine who is utilising R&E over commodity within our community.
Jeff Bartig also showed a slide highlighting out of 2600~ R&E origin AS’s, only 27 are peered with Routeviews and RIPE which is 1%. However more ASN’s have RIPE atlas probes deployed (approximately 8% of the origin ASN’s). This is why they are having to rely on active polling.
AoB: There was nothing else brought up to be discussed, so we ended the meeting.
Kind regards,
*Warrick Mitchell *(He/Him) • Director of Architecture
**
*AARNet Pty Ltd*
m: +61 416 089 354
e: warrick.mitchell@aarnet.edu.au mailto:warrick.mitchell@aarnet.edu.au
w: aarnet.edu.au https://www.aarnet.edu.au/
*Important: *This email and any files transmitted with it are confidential, and the rights of confidentiality in such information are not waived or lost by its mistaken delivery to you. Any dissemination, copying, use or disclosure of the email and/or such files without the permission of AARNet, or the sender, is strictly prohibited. If you have received this email in error, please contact the sender immediately and delete all copies of this transmission.
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Sorry to have missed it as my son was sick last night... fingers crossed that today goes better. I really appreciate the notes.
From the Kentik blog mentioned https://www.kentik.com/blog/beyond-their-intended-scope-ddos-mitigation-leak...
"Both of these examples involve cases of needless prepending contributing to leak propagation." I am not sure I agree particularly for the first case where we can see 3356's bgp communities still intact: 3356:123 is a customer route and 3356:666 is a peer route. They, like nearly everyone, localpref customers over peers by default (and you can see 3356:100 is set). The as-path was likely never part of the equation. The real question should be why isn't Lumen filtering routes from their customer.
Thus spake Philip Smith (philip@nsrc.org) on Wed, Apr 16, 2025 at 12:18:30PM +0100:
I'm more than happy to host more multi-hop BGP sessions from the R&E community, if these routing table views (and the MTRs from Uni of Oregon to the R&E network) are useful for general diagnosis. What I've got is displayed in the map here (we added PREGINET recently):
I have found these to be very useful, in particular where the R&E tables diverge from the commercial DFZ. For ESnet in particular it is highly non-trivial for us to offer a traditional router proxy so these public views also help in that regard.
Dale
Warrick Mitchell wrote on 16/4/2025 01:54:
Hi All,
Thank you to those who jumped on the call via the new zoom id, it is appreciated.
Notes from today´s call:
*APAN Review*- Warrick provided an overview of the routing working group meeting in Yokohama Japan. It was a great session kicked off by Thomas from Internet2 talking about how we all rely on each other to build our R&E global backbone and the routing improvements being made. Brenna provided an overview of the cases the working group had been working on and re-iterated the theme of the talks that week, resilience - we all need to work together. This then led into a discussion around reviewing the tooling available to help up lift your network, in which Warrick asked for ASN´s from the audience to use as real world examples in tooling. It was great to see the participation at Yokohama.
*Routing Leaks*- We briefly spoke about the Kentik blog report describing a route leak. It´s worth a read to understand what occurred and for us to check if we saw this issue within our networks.
*Internet2 Routing Policy Update*- Steve Wallace gave an update on Internet2´s routing policy and provided people with a link https:// docs.google.com/document/d/12z-019wD73aKcrhj0zCDqCOGvCN42tRLgdhKWhWS3C0/ edit?tab=t.0#heading=h.a5ld5ujhtxyu https://docs.google.com/document/ d/12z-019wD73aKcrhj0zCDqCOGvCN42tRLgdhKWhWS3C0/edit? tab=t.0#heading=h.a5ld5ujhtxyu
This led into a discussion about how Steve and team are testing and collecting the data to determine who is utilising R&E over commodity within our community.
Jeff Bartig also showed a slide highlighting out of 2600~ R&E origin AS´s, only 27 are peered with Routeviews and RIPE which is 1%. However more ASN´s have RIPE atlas probes deployed (approximately 8% of the origin ASN´s). This is why they are having to rely on active polling.
AoB: There was nothing else brought up to be discussed, so we ended the meeting.
Kind regards,
*Warrick Mitchell *(He/Him) o Director of Architecture
**
*AARNet Pty Ltd*
m: +61 416 089 354
e: warrick.mitchell@aarnet.edu.au mailto:warrick.mitchell@aarnet.edu.au
w: aarnet.edu.au https://www.aarnet.edu.au/
*Important: *This email and any files transmitted with it are confidential, and the rights of confidentiality in such information are not waived or lost by its mistaken delivery to you. Any dissemination, copying, use or disclosure of the email and/or such files without the permission of AARNet, or the sender, is strictly prohibited. If you have received this email in error, please contact the sender immediately and delete all copies of this transmission.
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-
Addleman, Hans C -
Dale W. Carder -
Philip Smith -
Warrick Mitchell