Networks ignoring prepends?

Tue Jan 23 17:37:17 UTC 2024

>
> Apparently there is a conflict between what you want and what 47787 wants.
> As you both seem to be paying customers, you should probably ask 3356 to
> resolve that instead of us random internet folks.
>

Calling 3356 and saying "I know your global routing policy is to prefer a
customer learned route over a peer route, but can you change that for me
please?" probably won't see much success.

On Tue, Jan 23, 2024 at 8:39 AM Alex Le Heux <alexlh at funk.org> wrote:

>
> >> Packets don't have customers, ISPs do. And in this case you're not a
> customer of the ISP making the routing decision
> >
> > Incorrect. I am a customer of 3356. A residential customer, not a BGP
> > customer. I'm paying them to route my packets too, and they're routing
> > them poorly.
>
> Oh, you should have said that right away, or perhaps I missed it.
>
> In that case it’s simple: Stop giving them money for bad service. By
> continuing to give them money you’re incentivizing them to continue
> breaking your internet, making you the architect of your own misery ;)
>
> > Also incorrect: every packet in your network is linked to either one
> > or two customers. Never more. Never less. Routing my packet via 47787
> > in this case serves neither of us: my Internet access is severely
> > degraded and 47787 is charged money for a packet they need not have
> > handled.
>
> Nonsense. 47787 is clearly telling 3356 they *want* to handle that traffic
> and even paying for the privilege. Apparently there is a conflict between
> what you want and what 47787 wants. As you both seem to be paying
> customers, you should probably ask 3356 to resolve that instead of us
> random internet folks.
>
> >> Fact is that all prepending does it provide a vague hint to other
> >> networks about what you would like them to do.
> >
> > Until they tamper with it using localpref, BGP's default behavior with
> > prepends does exactly the right thing, at least in my situation.
>
> Try giving your money to someone who runs BGP with just its default
> settings and no policies, see how well that works out.
>
> Cheers,
>
> Alex
>
>
> > Regards,
> > Bill Herrin
> >
> > --
> > William Herrin
> > bill at herrin.us
> > https://bill.herrin.us/
>
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