On 1/Sep/15 19:12, Roland Dobbins wrote:
Running flow telemetry in-band is penny-wise and pound-foolish, for networks of any size, in any circumstances. All management-plane traffic (and that's what flow telemetry is) should be segregated from the production network data plane.
Looking at the span of my network, when I am building an OoB platform to maintain management access to any device that may lose in-band connectivity, I'll be honest, moving flow data across that is the least of my worries. Simply because the costs and effort associated with getting OoB management plane access that is cleanly separated from in-band topologies does not always encourage the addition of traffic that could kill the case for the same. When my device is down, my primary objective is to get it back up, fast. Flow data being lost is less of a problem. Mark.