14 Feb
2019
14 Feb
'19
12:15 a.m.
On 13/Feb/19 20:00, Saku Ytti wrote:
Main advantage of out-of-path is that you decouple FIB and RIB scaling requirements and feature requirements. Your backbone device does not need to be qualified for large RIB or BGP at all. And when you do need more RIB scaling, you can upgrade out-of-path without any network interruption.
We've ran this for years (Cisco CSR1000v, since 2014), and our biggest problem has been server hardware failure. Failing fans, sensitivity to higher temperatures that routers can weather better... that sort of thing. Other than that, run this as a VM in your favourite hypervisor and you're good to go. Can't recommend it enough. Mark.