This page serves as a structured knowledge point directory organized according to the official exam objectives.
Each topic below links to a dedicated learning page designed to support topic-based study, technical understanding, and certification exam preparation.
What is OSPF?
Key Concepts
1. LSAs (Link-State Advertisements)
2. OSPF Areas
3. Neighbor Relationships
4. OSPF Network Types
Advantages of OSPF
Junos Configuration Example
Common Use Cases
What is IS-IS?
Key Concepts
1. Hierarchical Levels
2. LSP (Link State PDU)
3. TLVs (Type-Length-Value)
4. Multi-Topology IS-IS
5. Authentication
Advantages of IS-IS
Use Cases
Junos Configuration
What is BGP?
Key Concepts
1. BGP Attributes
2. BGP Sessions
3. MP-BGP (Multiprotocol BGP)
4. Failure Recovery
Advantages of BGP
Use Cases
Junos Configuration
Best Practices for Beginners
What is CoS?
Key Concepts
1. Traffic Classification
2. Scheduling
3. Traffic Shaping and Policing
4. Queue Management
Use Cases
Junos Configuration
Best Practices for CoS
What is IP Multicast?
Key Concepts
1. PIM (Protocol Independent Multicast) Modes
2. RPF (Reverse Path Forwarding) Check
3. MSDP (Multicast Source Discovery Protocol)
Use Cases
Junos Configuration
Best Practices
What is a Layer 3 VPN?
Key Concepts
1. MPLS Core
2. VRF (Virtual Routing and Forwarding)
3. RD (Route Distinguisher) and RT (Route Target)
4. MPLS Labels
Use Cases
Advantages of MPLS Layer 3 VPNs
Junos Configuration
Best Practices
What is a Layer 2 VPN?
Key Concepts
1. VPLS (Virtual Private LAN Service)
2. LDP Signaling
3. EVPN (Ethernet VPN)
How Layer 2 VPNs Work
Use Cases
Junos Configuration
Best Practices
Advantages of Layer 2 VPNs
1. LSDB Synchronization and SPF Calculation Timing
2. OSPFv3 Characteristics (IPv6 Support)
3. Route Redistribution in OSPF
4. OSPF Authentication Methods
5. LSA Refresh and Aging Mechanisms
Summary Table
1. IS-IS Independence from IP: Architectural Advantage
2. Level-1-2 Router Behavior: Core to Multi-Area Topology
3. DIS: Designated Intermediate System (vs OSPF DR)
4. LSP Aging and Reliable Flooding in IS-IS
5. Area Definition in IS-IS: Based on NET
Summary Table
1. BGP Best Path Selection: Full Decision Process
2. BGP Loop Prevention Mechanism
3. iBGP Split Horizon Rule
4. Peer Grouping and Update-Source Configuration
5. Confederation: Internal AS Scaling Tool
Summary Table
1. Forwarding Classes & Loss Priorities in Junos
2. Traffic Profiles & Three-Color Marking (Policers)
3. Hierarchical Class of Service (H-CoS)
4. DSCP Rewrite Rules (Output Marking)
Summary Table
1. IGMP (Internet Group Management Protocol)
2. PIM Bootstrap (BSR) Mechanism
3. SSM and IGMPv3 Dependency
4. PIM Assert Mechanism
Summary Table
1. MP-BGP and VPNv4 Address Families
2. PE-CE Routing Protocol Options
3. Route Distinguisher (RD) vs Route Target (RT)
4. Control Plane vs Data Plane Separation
5. Inter-AS VPNs (Type A/B/C Overview)
Summary Table
1. Split-Horizon Rule in VPLS
2. Signaling Comparison: LDP (VPLS) vs BGP (EVPN)
3. MAC Learning: Data Plane vs Control Plane
4. EVPN Route Types (Focus on Type-2)
Summary Table: Key Comparisons
This learning content is independently created.
Topic coverage is aligned with publicly published exam objectives for reference and study guidance only.