TZSP comes from early times, embodied at Mikrotik RouterOS. Pretty good lowcost way to capture packets from remote site without direct L2 SPAN/RSPAN.
At the first look, RouterOS works fine as BGP router-reflector for vpnv4 and vpls. In other words, reliably,
we can use MikroTik Cloud Core Router CCR1016-12S-1S+($495.00) with 9 cores x 1.2GHz CPU and 2GB RAM as large ISP scale RR.
I’ve updated my home’s Mikrotik to 6.6 software and I see Openflow configuration context, I surprised, really surprised again.