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Any Questions?. Chapter 14 Routing Protocol Concepts and Configuration. Connected and Static Routes Routing Protocol Overview Configuring and Verifying RIP-2. Do I know this?. Go through the Quiz- 5 minutes.

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chapter 14 routing protocol concepts and configuration
Chapter 14 Routing Protocol Concepts and Configuration
  • Connected and Static Routes
  • Routing Protocol Overview
  • Configuring and Verifying RIP-2
do i know this
Do I know this?

Go through the Quiz-

5 minutes

1. Which of the following must be true for a static route to be installed in a router’s IP routing table?

a. The outgoing interface associated with the route must be in an “up and up” state.

b. The router must receive a routing update from a neighboring router.

c. The ip route command must be added to the configuration.

d. The outgoing interface’s ip address command must use the special keyword.

2. Which of the following commands correctly configures a static route?

a. ip route

b. ip route serial 0

c. ip route /24

d. ip route /24 serial 0

3. Which of the following routing protocols are considered to use distance vector logic?

a. RIP




4. Which of the following routing protocols are considered to use link-state logic?

a. RIP

b. RIP-2




f. Integrated IS-IS

5. Which of the following routing protocols support VLSM?

a. RIP

b. RIP-2




f. Integrated IS-IS

6. Which of the following routing protocols are considered to be capable of converging quickly?

a. RIP

b. RIP-2




f. Integrated IS-IS

7. Router1 over a serial link, has interfaces with addresses and Which of the following commands would be part of a complete RIP Version 2 configuration on Router2, with which Router2 advertises out all interfaces, and about all routes?

a. router rip

b. router rip 3

c. network

d. version 2

e. network

f. network

g. network

h. network

i. network

8. Which of the following network commands, following a router rip command, would cause RIP to send updates out two interfaces whose IP addresses are and, mask

a. network

b. network

c. network

d. network

e. network 10

f. You cannot do this with only one network command.

9. What command(s) list(s) information identifying the neighboring routers that are sending routing information to a particular router?

a. show ip

b. show ip protocol

c. show ip routing-protocols

d. show ip route

e. show ip route neighbor

f. show ip route received

10. Review the snippet from a show ip route command on a router:

R [120/1] via, 00:00:13, Serial0/0/1

Which of the following statements are true regarding this output?

a. The administrative distance is 1.

b. The administrative distance is 120.

c. The metric is 1.

d. The metric is not listed.

e. The router added this route to the routing table 13 seconds ago.

f. The router must wait 13 seconds before advertising this route again.

connected and static routes
Connected and Static Routes
  • Routers need to know about networks
  • How can they learn
    • Connected
    • Static route
    • Dynamic route(routing protocols)
connected and static routes1
Connected and Static Routes

Can learn from Connected interfaces

    • When you program an interface, that network is automatically entered into the router
  • Can be programmed Statically
    • Ip route command
ping to check connectivity
PING to check connectivity
  • Ping sends ICMP echo requests
    • Router must know destination network address to forward packet
  • Extended Ping
    • Choose interface that ping is sent from
    • Can check different aspects of the router
default routes
Default Routes
  • Routers will discard packets if they do not have the destination in their routing tables
  • A default route is a fallback-where to send packets if nothing matches in the table
  • Usually used when there is only one path to exit.
    • R1 can only got through the S0/1 interface

Pg 447

default routes1
Default Routes
  • Ip route
    • is a wildcard that catches everything
    • Send all unknown destination packets to

Gateway of last resort is to network is subnetted, 3 subnets

C is directly connected, FastEthernet0/0

C is directly connected, Serial0/1

S* [1/0] via

Pg 448

routing protocol overview
Routing Protocol Overview
  • Fill the routing table
  • Routers advertise the routes they know about
    • Starting with connected routes
  • Routers add information to their tables and then send it out again
rip v2
RIP v2
  • Each router tells the others about its routes
    • Like a rumor or a game of telephone
comparing ip protocols
Comparing IP Protocols
  • Proprietary or Open
  • VLSM Support or Not
  • Interior or Exterior

Pg 450-451

autonomous systems
Autonomous Systems
  • Network under administrative control of an organization
    • Corporation or Government
  • Autonomous System Number (ASN) given out by groups that control IP addresses
  • Used so routers can make sure they don’t spread routes back to themselves
  • Used in some routing protocols

Pg 451

routing protocol types
Routing Protocol Types
  • Just know the names for now

Pg 452

  • If there is more than one route, how to decide which is best?
    • Different protocols use different metrics

Pg 453

  • Distance Vector
    • Uses Hop Count
    • No notice of condition or links

Pg 453

  • Link State
    • Uses more complex metric
    • Bandwidth and delay

Pg 453

  • Routers work faster with less entries in the table
    • If they can group networks into one entry, it is easier
  • Autosummarization
  • Manual Summarization
    • Allows you to control the summary process

Pg 454

classful and classless routing
Classful and Classless Routing
  • If a routing protocol pays attention to original IP address class and not just the subnet mask-classful

Pg 454

  • How fast will all the routers in a network have the same information
  • Faster is more nimble-better able to adjust to failures

Pg 455

configuring rip v2
Configuring RIP v2
  • Main commands

router RIP

version 2

network Network Number

Pg 457-458

configuring rip v21
Configuring RIP v2
  • Main commands

router RIP

Tells the router to turn on the routing protocol

version 2

Tells the router which version of RIP to use

network Network Number

      • Which of the routers interfaces should routing announcements be made on
      • Which networks should be advertised
      • RIP will change this to a classful address

Pg 457-458

other routing commands
Other Routing Commands
  • Passive interface
    • Turn off updates on that interface. Don’t make announcements

Pg 458

understanding sh ip route
Understanding sh ip route
  • See handout

Pg 460

administrative distance
Administrative Distance
  • Measure of the quality of routing information
    • If a router uses multiple protocols, the route in the table will be based on AD

Pg 462

sh ip protocols debuging rip
Sh ip protocols & Debuging RIP
  • show ip protocols
    • See which routing protocols are in use on which interfaces
  • debug ip rip
    • See rip messages as they are sent and received

Pg 463-465

key topics
Key Topics
  • See handout
  • What is purpose or routing protocol
  • How do you configure rip
  • How do you use the network command