1	Interconnecting Cisco Networking Devices Module 4 IP Routing (RIPv1, RIPv2, IGRP)
2	Overview Routing Basics Configuring IP Routing in Our Network Static Routing Default Routing Dynamic Routing Routing Protocol Basics Distance Vector (RIP, IGRP) Useful Commands Summary
3	Routing Basics Routing is taking a packet from one devices and sending it through the network to another device on a different network Routers must know (at a minimum) Destination Address Neighbor Routers from which it can learn about remote networks Possible routes to all remote networks The best route to each remote network How to maintain and verify routing information
4	Administrative Distance
5	Configuring Static IP Routing Router(config)# ip route 192.168.30.0 255.255.255.0 192.168.20.2
6	Configuring Default IP Routing Router(config)# ip route 0.0.0.0 0.0.0.0 192.168.20.2
7	Dynamic Routing / Routing Protocols Two types of Routing Protocols Interior (RIP, IGRP, EIGRP, OSPF) Exterior (BGP) Three classes of Routing Protocols Distance Vector (RIP, IGRP) Link State (OSPF) Hybrid (EIGRP)
8	Distance-Vector Routing Protocols Routing Loops Maximum Hop Count Split Horizon Route Poisoning Holddowns
9	Routing Information Protocol (RIP) True Distance-Vector Routing Protocol Sends a complete routing table out all active interfaces every 30 seconds Uses only hop count. Max is 15 by default, meaning 16 is “unreachable” RIPv1 uses only classful routing. RIPv2 uses prefix routing and sends the subnet mask w/ the table
10	Configuring RIP Router# config t Router(config)# router rip Router(config-router)# network 192.168.10.0 Router(config-router)# passive-interface ethernet 0 Router(config-router)# Ctrl+Z Router# show ip route
11	Interior Gateway Routing Protocol (IGRP) Cisco Proprietary Can be used in large Internetworks Uses an Autonomous System (AS) # for activation Full route table update every 90 seconds Uses bandwidth and delay of the line as metric (lowest metric wins)
12	Configuring IGRP Router# config t Router(config)# router igrp 10 Router(config-router)# network 192.168.10.0 Router(config-router)# passive-interface ethernet 0 Router(config-router)# Ctrl+Z Router# show ip route
13	Useful Commands
14	Summary Routing Basics Configuring IP Routing in Our Network Static Routing Default Routing Dynamic Routing Routing Protocol Basics Distance Vector (RIP, IGRP) Useful Commands