> > I did some research on this and it seems like perhaps the on-boot event > handler launching a python daemon to do this active probing out each isp > circuit and then making config changes in response to transit failures > might be the best option available to us. >
Pretty much, yes. They don't have any functionality like IP-SLA in EOS, but you can roll your own. Ex: https://github.com/arista-eosext/PingCheck On Wed, Dec 20, 2023 at 1:44 PM Alex Buie <ab...@cytracom.com> wrote: > Hello all, > > We find ourselves trying to solve a requirement where we would like to > test the viability of our paths to the internet and tear down the bgp > session if it is determined to be faulty. We had an issue recently where we > did not lose link or bgp but the carrier lost the ability to route traffic > to the internet for us and our existing automatic detection and remediation > strategies failed to detect this condition and we lost customer packets. > > Conceptually, we have a pair of DCS7050-QX landing a fiber each from two > ISPs with default routes on BGP at a dozen POPs around the US. > > One of the ISPs is our primary transit, and one is predominantly for > peered customers, but we can use it for transit during issues with the > primary circuits. > > I did some research on this and it seems like perhaps the on-boot event > handler launching a python daemon to do this active probing out each isp > circuit and then making config changes in response to transit failures > might be the best option available to us. > > However, I thought I’d reach out to the broader community to see if > there’s a better way to solve this, has an example script, or if anyone has > recommendations for methods of active monitoring for protecting against > this sort of failure. > > Thanks in advance for any insight and time. > > > > > *Alex Buie*Senior Cloud Operations Engineer > > 450 Century Pkwy # 100 Allen, TX 75013 > <https://maps.google.com/?q=450+Century+Pkwy+STE+100+%7C+Allen,+TX+%7C+75013&entry=gmail&source=g> > D: 469-884-0225 | www.cytracom.com >
