ARP
ARP stands for Address Resolution Protocol. It is a communication protocol used in computer networks to map an IP address […]
Category: Routing and Switching
EIGRP Basic Config
R5 R1 R2 R3 R4 Verification
DMVPN – Phase 3
High-Level Operations Summary Wireshark Verification All 4 (Spoke) routers sent an NHRP Registration Request to R5 (Hub), who responded with […]
DMVPN Notes – Phase 2 Dynamic Mappings
Configuration and Behavior Between R5 and R1 R1 (Spoke) sends an NHRP Request to R5 (Hub) R5 (Hub) Responds with […]
DMVPN Notes – Phase 2 Static Mappings
DMVPN Phase 2 with static mapping restrictions: R5 Hub R1 R2 R3 R4 Verification of mappings R1, R2, R3 and […]
DMVPN Notes – Phase 1 Dynamic Mappings
Dynamic mappings allow for a much more scalable configuration. How does this work? R5 HUB R1 Spoke R2 Spoke R3 […]
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 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, […]