> > I’d bet that 47787 is a paying century link customer. As such, despite the > ugliness of the path, CL probably local prefs everything advertised by them > higher than any non-paying link. I’m willing to bet 1299 is peered and not > paying CL. >
It's almost as if you've done this before. :) Community : 3356:3 3356:22 3356:100 ==> 3356:123 <++ 3356:575 3356:903 3356:2011 3356:11918 47787:1020 47787:3090 47787:3690 47787:30000 Cluster : 0.0.7.15 0.0.7.19 Originator Id : 4.69.181.14 Peer Router Id : 4.69.130.10 Fwd Class : None Priority : None Flags : Used Valid Best IGP Group-Best Route Source : Internal AS-Path : 47787 47787 47787 47787 53356 11875 11875 11875 3356:123 = Customer On Mon, Jan 22, 2024 at 5:45 PM Owen DeLong via NANOG <nanog@nanog.org> wrote: > I’d bet that 47787 is a paying century link customer. As such, despite the > ugliness of the path, CL probably local prefs everything advertised by them > higher than any non-paying link. I’m willing to bet 1299 is peered and not > paying CL. > > Sending bits for revenue is almost always preferable to sending bits for > free, so… > > Owen > > > > On Jan 22, 2024, at 12:37, William Herrin <b...@herrin.us> wrote: > > > > On Mon, Jan 22, 2024 at 10:19 AM James Jun <james....@towardex.com> > wrote: > >> So, as a customer, you actually SHOULD be demanding your ISPs > >> to positively identify and categorize their routes using local-pref > >> and communities. > > > > Hi James, > > > > The best path to me from Centurylink is: 3356 1299 20473 11875 > > > > The path Centurylink chose is: 3356 47787 47787 47787 47787 53356 > > 11875 11875 11875 > > > > Do you want to tell me again how that's a reasonable path selection, > > or how I'm supposed to pass communities to either 20473 or 53356 which > > tell 3356 to behave itself? > > > > Regards, > > Bill Herrin > > > > > > -- > > William Herrin > > b...@herrin.us > > https://bill.herrin.us/ > >
