Mnemonics

Syslog levels in reverse order
Do I Notice When Evenings Come Around Early. 0 	Emergency 1 	Alert 2 	Critical 3 	Error 4 	Warning 5 	Notice 6 	Informational 7 	Debug

BGP Route Selection
N-WLLA-OMNI N	Next Hop Reachable W	Weight - Higher L	Local_Pref - Higher L	Locally Injected > eBGP/iBGP A	AS_Path O	Origin – iBGP> eBGP> ? M	MED - Smaller N	Neighbor Type – Prefer eBGP over iBGP I	IGP Metric to next hop

OSPF States
DITE ELF D	Down I	Init T	Two-way E	Exstart E	Exchange L	Loading F	Full

DHCP Steps
DORA D	Discover O	Offer R	Request A	Acknowldgement

Phase 1 negotiates 5 things
HAGLE H	Hashing A	Authentication G	Group(DH 1,2,5) L	Lifetime E	Encryption