On 18/Mar/20 18:01, Nick Hilliard wrote:
>
> I used to use ISIS for this, but more recently moved to ebgp with
> 1s/3s timers. The convergence characteristics are reasonable and as
> the only routing protocol dependence is bgp, we can use bird which in
> turn allow us to automate provisioning via saltstack. Automating
> quagga and frr is hacky.
I prefer to have a number of core systems accessible in the IGP, because
BGP can sometimes get hosed for one reason or another.
BGP always needs IGP to work. The reverse is not true, and reduces us to
absolute basics when it hits the fan (which it has, a few times before).
Mark.
