Cisco IOS Layer 2 cheat sheet: VLAN, VTP, STP/RSTP, EtherChannel (LACP/PAgP), HSRP — configuration and diagnostics.
Content in development
Planned:
- VLAN — creation, access/trunk ports, allowed VLANs, native VLAN
- VTP — server/client/transparent/off,
show vtp status - STP —
spanning-tree mode, root bridge, portfast, bpduguard,show spanning-tree - EtherChannel — LACP (
channel-group mode active), PAgP (desirable),show etherchannel summary - HSRP — priority, preempt, track,
show standby - Inter-VLAN routing — router-on-a-stick, L3 switch SVI
- Port Security — max MAC, violation,
show port-security - DHCP Snooping, Dynamic ARP Inspection