Hi dear friendsi am starting to upgrade my WAN to SD-WAN, but i encountered to some problem with licensing 1- what is perpetual license and 3/5 years license in SD-WAN, how can i buy and which one is better for us?2- detail information about differen...

Dear guysi am very confuse about new Cisco termi know, SDN in cisco is different for seperate sectionsfor example:SDN in WAN is SD-WANSDN in LAN is SD-AccessSDN in DC is ACIfor example in WAN we should to use vmanage, vsmart , ...but i dont know what...

hi guys i have a strange problem i have two cisco 3850 stack switches and add all vlans on it when i use "show spanning-tree summary" command, just 128 vlan shown and when i use "sho run | s vlan" displays:   no spanning-tree vlan 1138-1243,1245-1467...