Thursday, January 23, 2020

BGP trouble - Out of my depth

So we have a public block of IPv4 /24 that our ISP is advertising for us, since our equipment would be unable to handle the routing table required. (BGP)

We've been using this setup for a while now with no major issues.

Yesterday morning I started receiving reports that websites we're unavailable, so I put on my Sherlock hat, grab my coffee and get to work.

It came down to: clients on certain providers we're unable to reach us. With online tools for trace route, 1 in 3 took the wrong way home and ended up in a black hole somewhere. ISP says they can't do much because it's too far upstream.

What would be the best course of action to have this fixed? Any advice appreciated.



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