ROUTING_PROTOCOLS

 

Objectives

• IP Routing

• Configuring Connected Routes

• Configuring Static Routes

• IP Forwarding with the Longest Prefix Match

Host Routing Logic Summary

Router Routing Logic Summary

IPv4 Network Used to Show Five-Step Routing Example

Host A Sends Packet to Host B

Routing Step 1, on Router R1: Checking FCS and Destination MAC

Routing Step 2 on Router R1: De-encapsulating the Packet

Routing Step 3 on Router R1: Matching the Routing Table

Routing Step 4 on Router R1: Encapsulating the Packet

Routing Step 4 on Router R1 with a LAN Outgoing Interface

Sample Network to Show Connected Routes

Connected and Local Routes on Router R1

 

   

Displaying a Router’s IP ARP Table

  

Static Route Configuration Concept

Sample Network Used in Static Route Configuration Examples

Static Routes Added to R1

Static Host Routes

ip route 10.1.1.0 255.255.255.0 10.2.2.2 

ip route 10.1.1.9 255.255.255.255 10.9.9.9

Example Use of Static Default Routes at 1000 Low-Speed Remote Sites

Adding a Static Default Route on R2