1. Routing Information Protocol
(RIP)

2. RIP Topics RIP features and limitations RIP v1 operation RIP metric
RIP configuration
Purpose: this figure states the chapter objectives.
Emphasize: Read or state each objective so each student has a clear understanding of the chapter objectives.

3. RIP Features and Limitations
Simplicity in configuration and operation
Standard, tested protocol
Version 2 overcomes some issues
Limitations
Slow convergence
Poor scalability
Route metric calculation is not granular

4. RIP v1 Operation Broadcasts periodic updates to neighbors
Update includes routes and metric for each route
Summarizes at classful boundaries
Receiving router adds routes with best metric to routing table

5. RIP Metric Hop count metric selects the path Maximum hops is 15
19.2 kbps T1 T1
Purpose: This figure presents general information about RIP.
Emphasize: The figure shows a network. The arrows highlight the path RIP selects. RIP selects the best path based on shortest hop count so it ignores the path with the faster T1 links.
Be sure that you do not disparage RIP. It was developed in a homogeneous network. If everything is connected via a single media type, then bandwidth-based metrics reduce to hop count. In some cases RIP is more appropriate than other protocols. It is extremely well tested. T1
Hop count metric selects the path
Maximum hops is 15
Hop count of 16 indicates unreachable 5

6. RIP Timers update 30 seconds invalid 180 seconds flush 240 seconds
hold down seconds

7. RIP Configuration Router(config)#router rip
Activates the RIP routing process on the router
Purpose: This figure shows the dynamic routing configuration commands.
Emphasize:
The router command starts a routing process. Field descriptions are
protocol—one of the following: RIP, IGRP, HELLO, OSPF, BGP, EGP
autonomous system—used with protocols which require an AS such as IGRP and BGP.
A proper understanding of these commands will avoid many problems in the labs.
The network statement contains no subnetting information. Networks are directly connected and are specified as the major Class A, B, or C network numbers
Transition: The next section describes the RIP routing protocol.

8. RIP Configuration
Router(config-router)#network network-number
Identifies interfaces to activate and networks to advertise
Purpose: This figure shows the dynamic routing configuration commands.
Emphasize:
The router command starts a routing process. Field descriptions are
protocol—one of the following: RIP, IGRP, HELLO, OSPF, BGP, EGP
autonomous system—used with protocols which require an AS such as IGRP and BGP.
A proper understanding of these commands will avoid many problems in the labs.
The network statement contains no subnetting information. Networks are directly connected and are specified as the major Class A, B, or C network numbers
Transition: The next section describes the RIP routing protocol.

9. RIP Configuration Router(config-router)#passive-interface s0
Passive-interface command prevents sending but not receiving
Purpose: This figure shows the dynamic routing configuration commands.
Emphasize:
The router command starts a routing process. Field descriptions are
protocol—one of the following: RIP, IGRP, HELLO, OSPF, BGP, EGP
autonomous system—used with protocols which require an AS such as IGRP and BGP.
A proper understanding of these commands will avoid many problems in the labs.
The network statement contains no subnetting information. Networks are directly connected and are specified as the major Class A, B, or C network numbers
Transition: The next section describes the RIP routing protocol.

10. RIP Configuration ExampleS2 S2 S3 S3 E0 A B C
router rip
network
network
passive-interface E0
router rip
network
network
passive-interface E0
Purpose: The figure shows how the RIP commands operate on the example network.
Emphasize:
An administrator only specifies directly connected networks that he wishes to publish to other routers.
Without the network command, nothing is advertised. With a network command, the router will advertise every subnet within the Class A, B, or C network specified in the configuration.
router rip
network

11. Verifying the Routing Protocol—RIPS2 S2 S3 S3 E0 A B C
RouterA#sh ip protocols
Routing Protocol is "rip"
Sending updates every 30 seconds, next due in 0 seconds
Invalid after 180 seconds, hold down 180, flushed after 240
Outgoing update filter list for all interfaces is
Incoming update filter list for all interfaces is
Redistributing: rip
Default version control: send version 1, receive any version
Interface Send Recv Key-chain
Ethernet
Serial
Routing for Networks:
Routing Information Sources:
Gateway Distance Last Update
:00:10
Distance: (default is 120)
Purpose: This figure shows how the show ip protocol command is used to monitor RIP operation.
Emphasize: The command displays the routing protocols that are active on the router for IP. It also gives network and timer information.
Point out the timing information.
Point out the list of networks for which the router is injecting routes.
Point out the administrative distance metric.

12. Displaying the IP Routing Table A B C
RouterA#sh ip route
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, * - candidate default
U - per-user static route, o - ODR
T - traffic engineered route
Gateway of last resort is not set
/24 is subnetted, 1 subnets
C is directly connected, Ethernet0
/24 is subnetted, 2 subnets
R [120/1] via , 00:00:07, Serial2
C is directly connected, Serial2
R /24 [120/2] via , 00:00:07, Serial2
Purpose: This figure displays the show ip route command which displays the contents of the router’s IP routing table.
Emphasize: Discuss the IP routing table in detail. Show the locations of hop count (metric) and the administrative distance (120).
Discuss the following fields:
R—Refers to routes learned from RIP.
via—Refers to the router that informed us about this route.
00:00:07 timer value—RIP updates are every 30 seconds. Ask, “How long until the next update?”
the interfaces to used for the best path

13. RIP v2 Enhancements Sends to 224.0.0.9 Sends mask – supports VLSM
Supports authentication
Purpose: this figure states the chapter objectives.
Emphasize: Read or state each objective so each student has a clear understanding of the chapter objectives.

14. RIP v2 Configuration Enables version 2
Router(config-router)# Version 2
Enables version 2
Purpose: This figure shows the dynamic routing configuration commands.
Emphasize:
The router command starts a routing process. Field descriptions are
protocol—one of the following: RIP, IGRP, HELLO, OSPF, BGP, EGP
autonomous system—used with protocols which require an AS such as IGRP and BGP.
A proper understanding of these commands will avoid many problems in the labs.
The network statement contains no subnetting information. Networks are directly connected and are specified as the major Class A, B, or C network numbers
Transition: The next section describes the RIP routing protocol.

15. RIP v2 Configuration Router(config-router)#no auto-summary
Disables auto-summarization at classful boundaries
Purpose: This figure shows the dynamic routing configuration commands.
Emphasize:
The router command starts a routing process. Field descriptions are
protocol—one of the following: RIP, IGRP, HELLO, OSPF, BGP, EGP
autonomous system—used with protocols which require an AS such as IGRP and BGP.
A proper understanding of these commands will avoid many problems in the labs.
The network statement contains no subnetting information. Networks are directly connected and are specified as the major Class A, B, or C network numbers
Transition: The next section describes the RIP routing protocol.

16. Show Commands Show ip protocols Sh ip interface Sh ip rip database
debug ip rip
Purpose: this figure states the chapter objectives.
Emphasize: Read or state each objective so each student has a clear understanding of the chapter objectives.

17. Lab Lab file Lab scenario RIP Configuration Lab-1.pdf
RIP Configuration Lab-1.pkt
RIP Configuration Lab-2.pkt