OSPF Network Types
Network Type DB/BDR Hello TypeUnicast/Multicast Hello/Dead/WaitIntervals Point-to-Point NO Multicast 10/40/40 Point-to-Multipoint NO Multicast 30/120/120 Point-to-Multipoint Non-broadcast NO Unicast 30/120/120 Broadcast […]
OSPF Basic Configuration Deep Dive – Part 1
Building OSPF Adjacencies Down This is the first OSPF neighbor state. It means that no information (hellos) has been received […]
OSPF Notes Basics – Part 2
Part 1 Link State Advertisements (LSAs) OSPF Header The major fields of the OSPF packet header are as follows: Identifying […]
OSPF Notes Basics – Part 1
Part 2 Forming OSPF Adjacencies Must match items: Must be unique items: OSPF Network Types Broadcast DR/BDR Election There is […]
DMVPN Notes – Phase 1 Static Mappings
EVE-NG topology DMVPN combines mGRE, the Next-Hop Resolution Protocol (NHRP), and optional IPSec. DMVPN can be implemented as Phase 1, […]
VLSM – Review – Example
VLSM table Major Network = 10.15.0.0/22 11111111.11111111.11111100.00000000 Number of networks = 2^ 6 = 64 Network Address Usable Host Range […]
OSI Model High-Level Review
The OSI (Open Systems Interconnection) model is a conceptual framework that standardizes the functions of a communication system or network […]
TCP Basics Part 1
TCP Header
DHCP
DHCP stands for Dynamic Host Configuration Protocol. It’s a network protocol used to automatically assign IP addresses and other network […]
Traceroute
Traceroute from PC1 (192.168.13.2) to PC2 (192.168.62.2) Note to self: The process repeats for each router in the path. Even […]