network automation , Lacp, HSRP, Vlans, VRRP, Qos, Trunking, port-channel, Nexus Catalyst 9000 series, Structured Cabling, server storage cabling, SVIs, Cisco switching routing platforms, Optics, Data center physical layer, network security hardening, static dynamic routing, STP, Acls, L2 L3 network design, Telecom and optical networking transport, SD-WAN