Routing, RIP, EIGRP, OSPF, ACL, Policy Base Routing, Redistribution, Bandwidth Management, Traffic Engineering, Route Filtering, Path Control, DHCP, VTP, VLAN, STP, RSTP, PVST, HSRP, VRRP, GLBP, MPLS, AAA, TACACS+, RADIUS, VLSM, IP ACLs, Filter IP traffic, SNMP, DDoS , TCP/IP , VACLs, SSH, SNMP, NTP, STP, ARP, MAC, NAT, VLAN Security, ASA Firewall , IPS, VPN