On Wed, May 15, 2019 at 11:52 AM Mike Hammett <na...@ics-il.net> wrote:
> You can't do uRPF if you're not taking full routes. > I would never do uRPF , i am not a transit shop, so no problem there. BCP38 is as sexy as i get. > You also have a more limited set of information for analytics if you don't > have full routes. > > Yep, i don’t run a sophisticate internet CDN either. Just pumping packets from eyeballs to clouds and back, mostly. > > ----- > Mike Hammett > Intelligent Computing Solutions > http://www.ics-il.com > > Midwest-IX > http://www.midwest-ix.com > > ------------------------------ > *From: *"Ca By" <cb.li...@gmail.com> > *To: *"Dan White" <dwh...@olp.net> > *Cc: *nanog@nanog.org > *Sent: *Wednesday, May 15, 2019 1:50:41 PM > > *Subject: *Re: BGP prefix filter list > > > > On Wed, May 15, 2019 at 7:27 AM Dan White <dwh...@olp.net> wrote: > >> On 05/15/19 13:58 +0000, Phil Lavin wrote: >> >> We're an eyeball network. We accept default routes from our transit >> >> providers so in theory there should be no impact on reachability. >> >> >> >> I'm pretty concerned about things that I don't know due to inefficient >> >> routing, e.g. customers hitting a public anycast DNS server in the >> wrong >> >> location resulting in Geolocation issues. >> > >> >Ah! Understood. The default route(s) was the bit I missed. Makes a lot of >> >sense if you can't justify buying new routers. >> > >> >Have you seen issues with Anycast routing thus far? One would assume that >> >routing would still be fairly efficient unless you're picking up transit >> >from non-local providers over extended L2 links. >> >> We've had no issues so far but this was a recent change. There was no >> noticeable change to outbound traffic levels. >> > > +1, there is no issue with this approach. > > i have been taking “provider routes” + default for a long time, works > great. > > This makes sure you use each provider’s “customer cone” and SLA to the max > while reducing your route load / churn. > > IMHO, you should only take full routes if your core business is providing > full bgp feeds to downstrean transit customers. > > >> -- >> Dan White >> BTC Broadband >> Network Admin Lead >> Ph 918.366.0248 (direct) main: (918)366-8000 >> Fax 918.366.6610 email: dwh...@mybtc.com >> http://www.btcbroadband.com >> > >
