Re: cloud automation BGP

[William Herrin <bill () herrin us>]

On Sun, Sep 27, 2020 at 8:53 AM Dmitry Sherman <dmitry () interhost net> wrote:
> Can you recommend software or cloud based solution which monitors if a prefix is advertised to a peer (via his 
> Looking Glass for example) & if traffic is passing thru an interface and if one of them is false it announce this 
> prefix via other upstream providers & remove blackholes?

Hello,

You seem to be looking for external automation to do something that's
baked into BGP. Any particular reason?

* Announce to all upstreams all the time.
* Use prepends on the less-preffered upstreams.
* If the less preferred upstream is localprefing to use your routes
despite the prepend, ask them what BGP community you should set to
disable that behavior.
* If an upstream propagates your route without passing your packets
often enough to need automation, cancel the contract.


I could see value in something local that measures things like packet
loss rates and cuts the primary if they get higher than acceptable,
but that wouldn't be a cloud service because the cloud wouldn't be
reliably reachable when you need to act on that information.

Regards,
Bill Herrin




--
William Herrin
bill () herrin us
https://bill.herrin.us/