dmpvnHi, we have a runnning dual hub dmvpn (2x ISR 4551 as HUB) ISR 4351 Router as Spoke. all sites have fiber access. Central 600/600 Mbit. Spooke 300/300Mbit or 500/150Mbit. we test with default iperf3 (-s / -c / -R) settingsupload from the spokes ...