Because, as Elmar alluded to, it makes a mess traffic engineering wise. Like the one where I ended up having to announce both a covering and disaggregates to overcome a provider of a provider localprefing my routes on a grand tour of the continental United States when they had a peeing route to me five miles down the road. https://mailman.nanog.org/pipermail/nanog/2024-January/224628.html
Ah yes, the 'everyone should do something different because I am inconvenienced' argument returns. On Wed, Apr 9, 2025 at 3:04 PM William Herrin via NANOG < nanog@lists.nanog.org> wrote:
On Wed, Apr 9, 2025 at 10:17 AM Matthew Petach <mpetach@netflight.com> wrote:
On Wed, Apr 9, 2025 at 8:31 AM William Herrin via NANOG < nanog@lists.nanog.org> wrote:
On Mon, Apr 7, 2025 at 8:10 AM Elmar K. Bins via NANOG <nanog@lists.nanog.org> wrote:
Yes, and it's very often a mess traffic-engineering wise...
Now, if one of the networks is playing local pref games, which they shouldn't be doing, then they may misroute packets the long way around the planet. But that's their fault for playing local pref games.
Bill--can you clarify why you feel setting localpref values for peers differently from customers is something ISPs "shouldn't be doing?"
Hi Matt,
Because, as Elmar alluded to, it makes a mess traffic engineering wise. Like the one where I ended up having to announce both a covering and disaggregates to overcome a provider of a provider localprefing my routes on a grand tour of the continental United States when they had a peeing route to me five miles down the road. https://mailman.nanog.org/pipermail/nanog/2024-January/224628.html
Is it your assertion that as an ISP, as a provider of services to my customers, I should leave it up to tie-breaking heuristics further and further down the BGP decision tree as to whether I can earn money by carrying traffic or not?
Not all hamburger joints are in the business of selling quality beef. Is yours?
Regards, Bill Herrin
-- William Herrin bill@herrin.us https://bill.herrin.us/ _______________________________________________ NANOG mailing list
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