5. Interior Gateway Routing Protocol (IGRP)
[pic]Top 10 Graphics:
1. Routed versus Routing Protocols
2. Multiprotocol Routing
3. Representing Distance with Metrics
4. Distance Vector Concept
5. Distance Vector Network Discovery
6. Distance Vector Topology Changes
7. Interior or Exterior Routing Protocols
8. Interior IP Routing Protocols
9. IP Routing Configuration Tasks
10. IGRP Configuration Example
• Internetworking functions of the 3Network Layer include 'network addressing' and 'best path selection' for traffic.
• 'Network addressing' uses one part to identify the path used by the router and one part for ports or devices on the net.
• 'Routed protocols' carry user traffic, while 'Routing protocols' work between routers to maintain path tables.
• Network discovery for 'Distance vector' involves exchange of routing tables; problems can include 'slower convergence'.
• For 'Link-state', routers calculate the shortest paths to other routers; problems can include 'inconsistent updates'.
• 'Balanced hybrid' routing uses attributes of both link-state and distance vector, applying paths to several protocols.
Network Layer (Path Determination)
• Layer 3 functions to find the best path through the internetwork
• Routing services use network topology information
• Provides best effort end-to-end packet delivery services to its user, the Transport layer
• Sends packets from the source network to the destination network based on IP routing table
• After the router determines which path to use, it can proceed with 'switching' the packet
Network Layer (Communicate Path)
• Addresses represent the path of media connections
• Provide a relay connection that interconnects independent networks
• Consistent end-to-end addressing improves the use of bandwidth by preventing unnecessary broadcasts
Routing Table (Destination Network Address &...