nanog mailing list archives
Re: difference with caching when connected to telia internet
From: Tore Anderson <tore () fud no>
Date: Sat, 18 Mar 2017 12:09:05 +0100
Hi Aaron,
What happened was, when I turned up my new 10 gig Telia Internet connection a few days ago, I needed to balance out my (4) 10 gig internet connections so I chopped up a /17 into (4) /19's. When I did this, I was still advertising the /17 to my local caches, but I was advertising the (4) /19's , one on each of my (4) 10 gig internet connections. So the caches out on the public internet were learning more specific prefixes (longer masks) then my local caches were learning... so the caches on the internet were being used instead of my local caches. Once google and Netflix tech support helped to make me aware of this, I correctly sent the additional (4) /19's to my caches and now all is well.
Please instead advertise the /17 on all your Telia uplinks. You should *additionally* advertise the four /19s to the different links, but make sure to tag them with the NO_EXPORT community so they don't propagate outside Telia. That way you get the traffic engineering you want (i.e., load balancing of ingress traffic from Telia), while at the same time avoiding coming across as a self-serving jerk to everyone else on the Internet by not polluting their routing tables/FIBs with four entirely superfluous /19s. Tore
Current thread:
- difference with caching when connected to telia internet Aaron Gould (Mar 17)
- RE: difference with caching when connected to telia internet James Breeden (Mar 17)
- RE: difference with caching when connected to telia internet Aaron Gould (Mar 17)
- Re: difference with caching when connected to telia internet Niels Bakker (Mar 17)
- RE: difference with caching when connected to telia internet Aaron Gould (Mar 17)
- Re: difference with caching when connected to telia internet Mike Hammett (Mar 17)
- Re: difference with caching when connected to telia internet Denys Fedoryshchenko (Mar 17)
- RE: difference with caching when connected to telia internet Aaron Gould (Mar 17)
- RE: difference with caching when connected to telia internet Aaron Gould (Mar 17)
- Re: difference with caching when connected to telia internet Tore Anderson (Mar 18)
- RE: difference with caching when connected to telia internet Aaron Gould (Mar 17)
- RE: difference with caching when connected to telia internet James Breeden (Mar 17)