4.0
Reviewed Aug 18, 2026Course: Network Architecture Fundamentals
Not too hard and not too easy but so understandable (thank you very much)
I strengthen my visibility on TCP/IP and OSI layer stack and gain new knowledge on VLAN. Apparently virtualization has big impact on VLAN and trunking 802.1Q to VRF (Virutal routing and forwarding table) and VXLAN which is VLAN in virtualization (like on steroid). One router with VRF-lite(local segmentation)/full VRF(lite plus MPLS & MBGP), and VXLAN to tunnel the VRF containerize router which is VNID+SGT (IETF-standard RFC7348 encapsulation).