In-depth understanding of TCP/IP, OSI model, Subnetting, Summarization, ARP, Packet-flow, headers, Routing & switching concepts, ICMP, TracerouteLayer-3 Protocols: static routing, RIP, RIPng, EIGRP, OSPF, BGPLayer-2 Protocols: VLANS, 8021q(dot1q), DTP, VTP, STP, Etherchannel layer-2 and layer-3Configuration of MLS: Inter-vlan routing (ROS and SVI), HSRP, VRRP, GLBPLayer-2 security: Port security, DHCP snooping, Dynamic ARP Inspection, IP source Guard, Private-VLAN, VLAN ACLSPAN, RSPAN, SNMP, Syslog, Netflow, CoPP, NTPQoS, Multicasting (IGMP, PIM), VRF-Lite, MPLS Layer-2 and layer-3 VPN, PBR, URPFGRE, DMVPN-PHASE1, DMVPN-PHASE2, DMVPN-PHASE3, IP-secAccess-list(IP access-list, VLAN access list, ARP access list), Prefix-list, Route-map, DHCP, NATIPv6, NDP OPERATIONSPlanes: Data Plane, Control Plane, Management planeSwitching types: process switching, fast switching, CEFBasic knowledge of SDWANHands-on Cisco Routers 1841, 2811, 7200 also hands-on experience of Cisco 2900, 3550, 3750 series Catalyst switchesTools: putty, secure-CRT, wireshark, GNS3