Here are a couple of Cisco Docs

https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-16/irg-xe-16-book/bgp-additional-paths.html
https://www.cisco.com/c/en/us/support/docs/ip/border-gateway-protocol-bgp/217097-bgp-path-selection-in-ios-xr.html

Hope that helps;

On Thu, Jan 11, 2024 at 11:04 AM Jonathan Stewart <jonathan@les.net> wrote:

Does anyone--like another IX, possibly--have documentation that can be shared about how to enable, disable, or ignore the add-path configuration on the member router?

Farmer mentions they didn't have it enabled suggesting each operator would need to enable add-path on their router before the functionality could be used by each member.

Thanks,
Jonathan

Jonathan Stewart
Network Engineer
LES.NET - AS18451
Desk: 1-204-666-6191
Mobile: 1-204-990-2120
130 Portage Avenue E
Winnipeg, MB  R3C 0A1
CANADA
On Wed, 2024-01-10 11:08 p.m., David Farmer wrote:
I'll add while we are receiving the Additional-Path BGP Capability from RS1, we don't have it enabled on our side, so it is not being negotiated.

Thanks

On Wed, Jan 10, 2024 at 8:33 PM Richard Laager <rlaager@wiktel.com> wrote:
Today, the University of Minnesota tested with me. I enabled "add paths tx" on one of their sessions and it worked.
-- 
Richard


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David Farmer               Email:farmer@umn.edu
Networking & Telecommunication Services
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University of Minnesota  
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--
===============================================
David Farmer               Email:farmer@umn.edu
Networking & Telecommunication Services
Office of Information Technology
University of Minnesota  
2218 University Ave SE        Phone: 612-626-0815
Minneapolis, MN 55414-3029   Cell: 612-812-9952
===============================================


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