LINK STATE PROTOCOLS (contents)
Disadvantages of the Distance Vector Protocols
Link State Protocols
Characteristics
Link State Database
The Sequence Numbers
The Sequence Numbers 2
The Flooding Protocol
The Flooding Protocol 2
Bringing up Adjacency
Securing the Map Updates
Shortest Path Routing Algorithms
Dijkstra’s Algorithm
Why Is a Link State protocol Better?
Link State Protocols Disadvantages
OSPF
The Design of OSPF
OSPF - Advantages
Fast convergence
Load Balancing by Multiple Path
Low Bandwidth Utilization
Support of Multiple Metrics
Optimal Path Utilization
Optimality Depends on Metric
The Cost and The Bandwidth
Authenticated Routing Updates
IP Subnetting Support
Route Summarization
Route Summarization Benefit
Route Tagging
TOS - Based Routing
External Routes
Broadcast Media Problems
Designated Router
Broadcast Media
Non Broadcast Networks
Multiple Areas
Hierarchical Structure
OSPF Areas
OSPF Areas 2
Area Link State Database
Classification of Routers
OSPF Area Mapping
The Link State Header
The Router Links
The Network Links
The Summary Links
The External Links
Protocols within OSPF
The Common Header
The Hello Protocol
The Exchange Protocol
The Exchange Protocol 2
The Flooding Protocol
Aging Link State Records
Scaling OSPF
Route Redistribution
Conclusions
Conclusions 2