MAC address table management, Err-disable recovery, CDP, LLDP, UDLD, VLANs, VTP, dot1Q, Native VLAN
EtherChannels, LACP, PAgP
Spanning Tree Protocol, PVST+, RPVST+, MST, Switch priority, port priority, path cost, STP timers
PortFast, BPDUguard, BPDUfilter, Loopguard, Rootguard
SPAN, RSPAN
chassis virtualization and aggregation, Stackwise
First-Hop Redundancy Protocols, HSRP, VRRP, GLBP
DHCP snooping, IP Source Guard, Dynamic ARP inspection, Port security, Private VLAN, Storm control
Cisco IOS AAA with TACACS+ and RADIUS, Local privilege authorization fallback
