Advanced EIGRP for IPV4

Please check our video of advanced EIGRP for IPV4

This is our personal lab but you can download it from hereAdvanced EIGRP For IPV4

 

Advance EIGRP for IPV4

Hello Guys..We are going to use one more time a lab based on Cisco Network Academy .We are going to  change some values and we will work it out.

Let ‘s make some observation:

·         Instead of S0/0/0 we will use S0/0

·         Instead of Ga0/0 (Gibabit Ethernet0/0)  we will assume that you will initially buy for your lab  an old and  used  router on eBay or Amazon so you won’t be using initially fiber Optic that requires Ga interface connection

·         The link of the original Cisco Network Academy is Click Here for original Cisco Network academy lab

·          We will use GNS3 instead of real equipment so you can follow the graphic as well

·          We will assume that you know how to configure GNS3 or any other emulator

·         We will post some resources here so it would be an easy process of copy and paste, to make your life easier

This is  going  to be our addressing table that we are going to use:

	Addressing table
DEVICE	INTERFACE	IP ADDRESS	SUBNET MASK	DEFAULT GETAWAY
R1	Fa0/0	192.168.1.1	255.255.255.0	N/A
	S0/0  DCE	192.168.12.1	255.255.255.252	N/A
	S0/1	192.168.13.1	255.255.255.252	N/A
	Lo1	192.168.11.1	255.255.255.252	N/A
	Lo5	192.168.11.5	255.255.255.252	N/A
	Lo9	192.168.11.9	255.255.255.252	N/A
	Lo13	192.168.11.13	255.255.255.252	N/A
R2	Fa0/0	192.168.2.1	255.255.255.0	N/A
	S0/0	192.168.12.2	255.255.255.252	N/A
	S0/1 DCE	192.168.23.1	255.255.255.252	N/A
	Lo1	192.168.22.1	255.255.255.252	N/A
R3	Fa0/0	192.168.3.1	255.255.255.0	N/A
	S0/0  DCE	192.168.13.2	255.255.255.252	N/A
	S0/1	192.168.23.2	255.255.255.252	N/A
	Lo1	192.168.33.1	255.255.255.252	N/A
	Lo5	192.168.33.5	255.255.255.252	N/A
	Lo9	192.168.33.9	255.255.255.252	N/A
	Lo13	192.168.33.13	255.255.255.252	N/A
PC-A	NIC	192.168.1.3	255.255.255.0	192.168.1.1
PC-B	NIC	192.168.2.3	255.255.255.0	192.168.2.1
PC-C	NIC	192.168.3.3	255.255.255.0	192.168.3.1

We need to understand this table as well: cider mask of /30    …it correspond to 255.255.255.252

Objectives

1.       Build the network and configure basic device setting

2.      Configure EIGRP and verify connectivity

3.       Configure summarization for EIGRP (Configure EIGRP for automatic summarization)

4.      Configure and propagate  a default Static Route

5.       Fine-tune EIGRP ( Configure bandwidth utilization for EIGRP, hello intervals  and hold timer)

6.      Configure EIGRP Authentication

Part 1:We will post this information here…assuming that you already know how to work with GNS3 or packet tracer , so I made it easy for you: copy and paste

Part 1: Build the Network and Configure Basic Device Settings

In Part 1, you will set up the network topology and configure basic settings on the PC hosts and routers.

Step 1: Cable the network as shown in the topology.

Step 2: Configure PC hosts.

Step 3: Initialize and reload the routers as necessary.

Step 4: Configure basic settings for each router.

a. Disable DNS lookup.

b. Configure device name as shown in the topology.

c. Assign cisco as the console and vty passwords.

d. Assign class as the privileged EXEC password.

e. Configure logging synchronous to prevent console messages from interrupting command entry.

f. Configure the IP address listed in the Addressing Table for all interfaces.

Note: Do NOT configure the loopback interfaces at this time.

g. Copy the running configuration to the startup configuration.

Router 1:	Router 2
conf t	Conf t
Hostname R1	Hostname R2
Int fa0/0	Int fa0/0
Ip address 192.168.1.1 255.255.255.0	Ip address 192.168.2.1 255.255.255.0
No shut	No shut
Int s0/0	Int s0/0
Ip address 192.168.12.1 255.255.255.252	Ip address 192.168.12.2 255.255.255.252
Clock rate 128000	No shut
No shutdown	Int s0/1
Int s0/1	Ip address 192.168.23.1 255.255.255.252
Ip add 192.168.13.1 255.255.255.252	Clock rate 128000
No shut	No shut

Router 3

Conf t

Hostname R3

Int fa0/0

Ip address 192.168.3.1 255.255.255.0

No shut

Int s0/0

Ip address 192.168.13.2 255.255.255.252

Clock rate 128000

No shut

Int s0/1

Ip address 192.168.23.2 255.255.255.252

No shut

Part 2: Configure EIGRP and Verify Connectivity

In Part 2, you will configure basic EIGRP for the topology and set bandwidths for the serial interfaces.

Note: This lab provides minimal assistance with the actual commands necessary to configure EIGRP.

However, the required commands are provided in Appendix A. Test your knowledge by trying to configure the devices without referring to the appendix.

Step 1: Configure EIGRP.

a. On R1, configure EIGRP routing with an autonomous system (AS) ID of 1 for all directly connected

networks. Write the commands used in the space below.

Router 1

exit

Router eigrp 1

Network 192.168.1.0 0.0.0.255

Network 192.168.12.0 0.0.0.3

Network 192.168.13.0 0.0.0.3

b. For the LAN interface on R1, disable the transmission of EIGRP hello packets. Write the command used in the space below

R1	Passive-interface f0/0

c. On R1, configure the bandwidth for S0/0 to 1024 Kb/s and the bandwidth for S0/1 to 64 Kb/s. Write the commands used in the space below. Note: The bandwidth command only affects the EIGRP metric calculation, not the actual bandwidth of the serial link.

R1

Exit

Int s0/0

Bandwidth 1024

Int s0/1

Bandwidth 64

d. On R2, configure EIGRP routing with an AS ID of 1 for all networks, disable the transmission of EIGRP

hello packets for the LAN interface, and configure the bandwidth for S0/0 to 1024 Kb/s.

R2

Exit

Router eigrp 1

Network 192.168.2.0 0.0.0.255

Network 192.168.23.0 0.0.0.3

Network 192.168.12.0 0.0.0.3

Passive-interface fa0/0

Exit

Int s0/0

Bandwidth 1024

e. On R3, configure EIGRP routing with an AS ID of 1 for all networks, disable the transmission of EIGRP

hello packets for the LAN interface, and configure the bandwidth for S0/0 to 64 Kb/s.

R3

Exit

Router eigrp 1

Network 192.168.3.0 0.0.0.255

Network 192.168.13.0  0.0.0.3

Network 192.168.23.0 0.0.0.3

Passive-interface fa0/0

Exit

Int s0/0

Bandwidth 64

Step 2: Test connectivity.

All PCs should be able to ping one another. Verify and troubleshoot if necessary.

Note: It may be necessary to disable the PC firewall to ping between PCs.

R3

Ping 192.168.23.1

Ping 192.168.13.1

Part 3: Configure Summarization for EIGRP

In Part 3, you will add loopback interfaces to R1, enable EIGRP automatic summarization on R1, and observe the effects on the routing table for R2. You will also add loopback interfaces on R3.

Step 1: Configure EIGRP for automatic summarization.

a.-Issue the show ip protocols command on R1. What is the default status of automatic summarization in EIGRP?

b. Configure the loopback addresses on R1.

R1

Conf t

Int lo 1

Ip address 192.168.11.1 255.255.255.252

Int lo 5

Ip address 192.168.11.5 255.255.255.252

Int lo 9

Ip address 192.168.11.9 255.255.255.252

Int lo 13

Ip address 192.168.11.13 255.255.255.252

c. Add the appropriate network statements to the EIGRP process on R1. Record the commands used in the space below.

R1#router eigrp 1

Network 192.168.11.0 0.0.0.3

Network 192.168.11.4 0.0.0.3

Network 192.168.11.8 0.0.0.3

Network 192.168.11.12 0.0.0.3

d. On R2, issue the show ip route eigrp command. How are the loopback networks represented in the

output?

e. On R1, issue the auto-summary command inside the EIGRP process.

R1(config)# router eigrp 1

R1(config-router)# auto-summary

How does the routing table on R2 change?

Step 2: Configure manual summarization for EIGRP.

a.       Configure the loopback addresses on R3.

R3#

en

Conf t

Int lo1

Ip address 192.168.33.1 255.255.255.252

Int lo5

Ip address 192.168.33.5 255.255.255.252

Int lo9

Ip address 192.168.33.9 255.255.255.252

Int lo13

Ip address 192.168.33.13 255.255.255.252

b.      Add the appropriate network statements to the EIGRP process on R3. in the output?

Exit

Router eigrp 1

Network 192.168.33.0 0.0.0.3

Network 192.168.33.4 0.0.0.3

Network 192.168.33.8 0.0.0.3

Network 192.168.33.12 0.0.0.3

c. On R2, issue the show ip route eigrp command. How are the loopback networks from R3 represented in the output?

d. Determine the summary EIGRP route for the loopback addresses on R3. Write the summary route in the space below.

e. For the serial interfaces on R3, issue the ip summary-address eigrp 1 network address subnet mask

Command to manually summarize the networks.

Conf t

interface s0/0

ip summary-address eigrp 1 192.168.33.0 255.255.255.240

exit

interface s0/1

ip summary-address eigrp 1 192.168.33.0 255.255.255.240

How does the routing table on R2 change?

Part 4: Configure and Propagate a Default Static Route

In Part 4, you will configure a default static route on R2 and propagate the route to all other routers.

a.       Configure the loopback address on R2.

R2

Int lo 1

Ip address 192.168.22.1 255.255.255.252

b.       

b. Configure a default static route with an exit interface of Lo1.

R2(config)#

Exit

 ip route 0.0.0.0 0.0.0.0 Lo1

c. Use the redistribute static command within the EIGRP process to propagate the default static route to other participating routers.

router eigrp 1

redistribute static

d. Use the show ip protocols command on R2 to verify the static route is being distributed.

R2# show ip protocols

e. On R1, issue the show ip route eigrp | include 0.0.0.0 command to view statements specific to the

default route. How is the static default route represented in the output? What is the administrative

distance (AD) for the propagated route?

Part 5: Fine-Tune EIGRP

In Part 5, you will configure the percentage of bandwidth that can be used by an EIGRP interface and change the hello interval and hold timers for EIGRP interfaces.

Step 1: Configure bandwidth utilization for EIGRP.

a. Configure the serial link between R1 and R2 to allow only 75 percent of the link bandwidth for EIGRP

traffic.

R1

interface s0/0

ip bandwidth-percent eigrp 1 75

R2

interface s0/0

ip bandwidth-percent eigrp 1 75

c.       Configure the serial link between R1 and R3 to allow 40 percent of the links bandwidth for EIGRP traffic.

R1

interface s0/1

ip bandwidth-percent eigrp 1 40

R2

interface s0/0

ip bandwidth-percent eigrp 1 40

Step 2: Configure the hello interval and hold timer for EIGRP.

a. On R2, use the show ip eigrp interfaces detail command to view the hello interval and hold timer for

EIGRP.

R2# show ip eigrp interfaces detail

What is the default value for hello time? _________________

What is the default value for hold time? _________________

c.       Configure S0/0 and S0/1 interfaces on R1 to use a hello interval of 60 seconds and a hold time of 180 seconds in that specific order.

R1

interface s0/0

ip hello-interval eigrp 1 60

ip hold-time eigrp 1 180

interface s0/1

ip hello-interval eigrp 1 60

ip hold-time eigrp 1 180

d.      Configure the serial interfaces on R2 and R3 to use a hello interval of 60 seconds and a hold time of 180 seconds.

R2

interface s0/0

ip hello-interval eigrp 1 60

ip hold-time eigrp 1 180

interface s0/1

ip hello-interval eigrp 1 60

ip hold-time eigrp 1 180

R3

interface s0/0

ip hello-interval eigrp 1 60

ip hold-time eigrp 1 180

interface s0/1

ip hello-interval eigrp 1 60

ip hold-time eigrp 1 180

e.      Use the show ip eigrp interfaces detail command on R2 to verify configuration.

Part 6: Configure EIGRP Authentication

In Part 6, you will create an authentication key on all routers and configure router interfaces to use MD5

authentication for EIGRP message authentication.

Step 1: Configure authentication keys.

a. On R1, use the key chain name command in global configuration mode to create a key chain with the label EIGRP-KEYS.

R1(config)#

key chain EIGRP-KEYS

key 1

key-string cisco

b. Complete the configuration on R2 and R3.

c. Issue the show key chain command. You should have the same output on every router.

Step 2: Configure EIGRP link authentication.

a. Apply the following commands to active EIGRP authentication on the serial interfaces on R1.

R1# conf t

interface s0/0

ip authentication key-chain eigrp 1 EIGRP-KEYS

ip authentication mode eigrp 1 md5

interface s0/1

ip authentication key-chain eigrp 1 EIGRP-KEYS

ip authentication mode eigrp 1 md5

b. Activate EIGRP authentication on the serial interfaces on R2 and R3.

c. On R2, use the show ip eigrp interfaces detail command to verify authentication.

R2# show ip eigrp interfaces detail

Reflection

1. What are the benefits of summarizing routes?

2. When setting EIGRP timers, why is it important to make the hold time value equal to or greater than the hello interval?

3. Why is it important to configure authentication for EIGRP?