Challenge OSPF Scenario

Today, We will configure this OSPF Scenario in the figure and adding more requires

1. Basic Configuration on all Routers: Password, banner...

Router(config)#hostname OSIRIS
OSIRIS(config)#no ip domain-lookup
OSIRIS(config)#line console 0
OSIRIS(config-line)#password cisco
OSIRIS(config-line)#login
OSIRIS(config-line)#exit
OSIRIS(config)#username thaolv password 0 thaolv
OSIRIS(config)#line vty 0 4
OSIRIS(config-line)#login local
OSIRIS(config-line)#exit
OSIRIS(config)#enable secret cisco
OSIRIS(config)#service password-encryption
OSIRIS(config)#banner motd #OSIRIS is configured by THAOLV#

2. Configuring IP address, enable OSPF Routing, change bandwidth to fit the scenario.
On OSIRIS Router

OSIRIS(config)#interface lo0
*Mar 1 00:06:02.923: %LINEPROTO-5-UPDOWN: Line protocol on Interface Loopback0, changed state to up
OSIRIS(config-if)#ip address 1.1.1.1 255.255.255.255

OSIRIS(config-if)#interface f1/0
OSIRIS(config-if)#description F1/0 is connected to ISIS
OSIRIS(config-if)#ip address 172.12.12.1 255.255.255.0
OSIRIS(config-if)#no shutdown
OSIRIS(config-if)#
*Mar 1 00:07:41.091: %LINK-3-UPDOWN: Interface FastEthernet1/0, changed state to up
*Mar 1 00:07:42.091: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet1/0, changed state to up
OSIRIS(config-if)#bandwidth 1000000
OSIRIS(config)#ip ospf authentication message-digest
OSIRIS(config-if)#ip ospf message-digest-key 1 md5 thaolv

OSIRIS(config)#interface f0/0
OSIRIS(config-if)#description F0/0 is connected to MA'AT
OSIRIS(config-if)#ip address 172.12.123.1 255.255.255.0
OSIRIS(config-if)#no shutdown
OSIRIS(config-if)#
*Mar 1 00:12:53.567: %LINK-3-UPDOWN: Interface FastEthernet0/0, changed state to up
*Mar 1 00:12:54.567: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up
OSIRIS(config-if)#ip ospf authentication message-digest
OSIRIS(config-if)#ip ospf message-digest-key 1 md5 thaolv

OSIRIS(config)#router ospf 1
OSIRIS(config-router)#network 172.12.12.0 255.255.255.0 area 0
OSIRIS(config-router)#network 172.12.123.0 255.255.255.0 area 0
OSIRIS(config-router)#network 1.1.1.1 255.255.255.255 area 0
OSIRIS(config-router)#passive-interface lo0
OSIRIS(config-router)#auto-cost reference-bandwidth 1000
% OSPF: Reference bandwidth is changed.
Please ensure reference bandwidth is consistent across all routers.
OSIRIS(config-router)#

Verify by execute the command show ip route

OSIRIS#show ip route
Codes: C - connected, S - static, 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
i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS inter area, * - candidate default, U - per-user static route
o - ODR, P - periodic downloaded static route

Gateway of last resort is not set

1.0.0.0/32 is subnetted, 1 subnets
C 1.1.1.1 is directly connected, Loopback0
2.0.0.0/32 is subnetted, 1 subnets
O 2.2.2.2 [110/2] via 172.12.12.2, 00:03:08, FastEthernet1/0
3.0.0.0/32 is subnetted, 1 subnets
O 3.3.3.3 [110/3] via 172.12.12.2, 00:03:08, FastEthernet1/0
172.12.0.0/24 is subnetted, 3 subnets
C 172.12.12.0 is directly connected, FastEthernet1/0
O 172.12.23.0 [110/2] via 172.12.12.2, 00:03:08, FastEthernet1/0
C 172.12.123.0 is directly connected, FastEthernet0/0

On ISIS Router

ISIS(config)#interface lo0
ISIS(config-if)#ip add
*Mar 1 00:17:03.263: %LINEPROTO-5-UPDOWN: Line protocol on Interface Loopback0, changed state
ISIS(config-if)#ip address 2.2.2.2 255.255.255.255

ISIS(config-if)#interface F1/0
ISIS(config-if)#description F1/0 is connected to OSIRIS
ISIS(config-if)#ip address 172.12.12.2 255.255.255.0
ISIS(config-if)#no shutdown
ISIS(config-if)#
*Mar 1 00:18:22.251: %LINK-3-UPDOWN: Interface FastEthernet1/0, changed state to up
*Mar 1 00:18:23.251: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet1/0, changed state to up
ISIS(config-if)#bandwidth 1000000
ISIS(config-if)#ip ospf authentication message-digest
ISIS(config-if)#ip ospf message-digest-key 1 md5 thaolv

ISIS(config)#interface F2/0
ISIS(config-if)#description F2/0 is connected to SETH
ISIS(config-if)#ip address 172.12.23.2 255.255.255.0
ISIS(config-if)#no shutdown
ISIS(config-if)#
*Mar 1 00:20:36.059: %LINK-3-UPDOWN: Interface FastEthernet2/0, changed state to up
*Mar 1 00:20:37.059: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet2/0, changed state to up
ISIS(config-if)#ip ospf authentication message-digest
ISIS(config-if)#ip ospf message-digest-key 1 md5 thaolv
ISIS(config-if)#bandwidth 1000000

ISIS(config)#interface F0/0
ISIS(config-if)#description F0/0 is connected to MA'AT
ISIS(config-if)#ip address 172.12.123.2 255.255.255.0
ISIS(config-if)#no shutdown
ISIS(config-if)#
*Mar 1 00:22:13.051: %LINK-3-UPDOWN: Interface FastEthernet0/0, changed state to up
*Mar 1 00:22:14.051: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up
ISIS(config-if)#ip ospf authentication message-digest
ISIS(config-if)#ip ospf message-digest-key 1 md5 thaolv

ISIS(config)#router ospf 1
ISIS(config-router)#network 172.12.12.0 255.255.255.0 area 0
ISIS(config-router)#network 172.12.123.0 255.255.255.0 area 0
*Mar 1 00:23:37.751: %OSPF-5-ADJCHG: Process 1, Nbr 1.1.1.1 on FastEthernet1/0 from LOADING to FULL, Loading Done
ISIS(config-router)#network
*Mar 1 00:23:42.131: %OSPF-5-ADJCHG: Process 1, Nbr 1.1.1.1 on FastEthernet0/0 from LOADING to FULL, Loading Done
% Incomplete command.

ISIS(config-router)#network 172.12.23.0 255.255.255.0 area 0
ISIS(config-router)#network 2.2.2.2 255.255.255.255 area 0
ISIS(config-router)#passive-interface lo0
ISIS(config-router)#auto-cost refe
ISIS(config-router)#auto-cost reference-bandwidth 1000
% OSPF: Reference bandwidth is changed.
Please ensure reference bandwidth is consistent across all routers.

Verify by execute the command show ip route

ISIS#show ip route
Codes: C - connected, S - static, 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
i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS inter area, * - candidate default, U - per-user static route
o - ODR, P - periodic downloaded static route

Gateway of last resort is not set

1.0.0.0/32 is subnetted, 1 subnets
O 1.1.1.1 [110/2] via 172.12.12.1, 00:03:57, FastEthernet1/0
2.0.0.0/32 is subnetted, 1 subnets
C 2.2.2.2 is directly connected, Loopback0
3.0.0.0/32 is subnetted, 1 subnets
O 3.3.3.3 [110/2] via 172.12.23.3, 00:03:57, FastEthernet2/0
172.12.0.0/24 is subnetted, 3 subnets
C 172.12.12.0 is directly connected, FastEthernet1/0
C 172.12.23.0 is directly connected, FastEthernet2/0
C 172.12.123.0 is directly connected, FastEthernet0/0

On SETH Router

SETH(config)#interface lo0
SETH(config-if)#
*Mar 1 00:25:16.795: %LINEPROTO-5-UPDOWN: Line protocol on Interface Loopback0, changed state to up
SETH(config-if)#ip address 3.3.3.3 255.255.255.255

SETH(config-if)#interface F1/0
SETH(config-if)#description F1/0 is connected to ISIS
SETH(config-if)#ip address 172.12.23.3 255.255.255.0
SETH(config-if)#no shut
SETH(config-if)#
*Mar 1 00:26:06.383: %LINK-3-UPDOWN: Interface FastEthernet1/0, changed state to up
*Mar 1 00:26:07.383: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet1/0, changed state to up
SETH(config-if)#bandwidth 1000000
SETH(config-if)#ip ospf authentication message-digest
SETH(config-if)#ip ospf message-digest-key 1 md5 thaolv

SETH(config-if)#interface F0/0
SETH(config-if)#description F0/0 is connected to MA'AT
SETH(config-if)#ip address 172.12.123.3 255.255.255.0
SETH(config-if)#no shut
SETH(config-if)#
*Mar 1 00:27:21.883: %LINK-3-UPDOWN: Interface FastEthernet0/0, changed state to up
*Mar 1 00:27:22.883: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up
SETH(config-if)#ip ospf authentication message-digest
SETH(config-if)#ip ospf message-digest-key 1 md5 thaolv
SETH(config-if)#exit

SETH(config)#router ospf 1
SETH(config-router)#network 172.12.123.0 255.255.255.0 area 0
SETH(config-router)#network 172.12
*Mar 1 00:28:39.975: %OSPF-5-ADJCHG: Process 1, Nbr 2.2.2.2 on FastEthernet0/0 from LOADING to FULL, Loading Done.23.0 2
*Mar 1 00:28:41.887: %OSPF-5-ADJCHG: Process 1, Nbr 1.1.1.1 on FastEthernet0/0 from LOADING to FULL, Loading Done55
% Incomplete command.

SETH(config-router)#network 172.12.23.0 255.255.255.0 area 0
SETH(config-router)#network 3.3.3.3 255.25
*Mar 1 00:28:57.647: %OSPF-5-ADJCHG: Process 1, Nbr 2.2.2.2 on FastEthernet1/0 from LOADING to FULL, Loading Done5.255
% Incomplete command.

SETH(config-router)#network 3.3.3.3 255.255.255.255 area 0
SETH(config-router)#passive-interface lo0
SETH(config-router)#auto-cost re
SETH(config-router)#auto-cost reference-bandwidth 1000
% OSPF: Reference bandwidth is changed.
Please ensure reference bandwidth is consistent across all routers.

Verify by execute the command show ip route

SETH#show ip route
Codes: C - connected, S - static, 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
i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS inter area, * - candidate default, U - per-user static route
o - ODR, P - periodic downloaded static route

Gateway of last resort is not set

1.0.0.0/32 is subnetted, 1 subnets
O 1.1.1.1 [110/3] via 172.12.23.2, 00:00:21, FastEthernet1/0
2.0.0.0/32 is subnetted, 1 subnets
O 2.2.2.2 [110/2] via 172.12.23.2, 00:00:21, FastEthernet1/0
3.0.0.0/32 is subnetted, 1 subnets
C 3.3.3.3 is directly connected, Loopback0
172.12.0.0/24 is subnetted, 3 subnets
O 172.12.12.0 [110/2] via 172.12.23.2, 00:00:21, FastEthernet1/0
C 172.12.23.0 is directly connected, FastEthernet1/0
C 172.12.123.0 is directly connected, FastEthernet0/0

Note: To show neighbor to view DR ad BDR you can execute the command show ip ospf neighbor

ISIS#show ip ospf neighbor

Neighbor ID Pri State Dead Time Address Interface
3.3.3.3 1 FULL/BDR 00:00:38 172.12.23.3 FastEthernet2/0
1.1.1.1 1 FULL/DR 00:00:36 172.12.123.1 FastEthernet0/0
3.3.3.3 1 FULL/DROTHER 00:00:31 172.12.123.3 FastEthernet0/0
1.1.1.1 1 FULL/DR 00:00:31 172.12.12.1 FastEthernet1/0

You see OSIRIS Router appear as DR because i configure begin with OSIRIS Router. To know why you can view previous post Determining DR and BDR in OSPF Router .To change DR and BDR you can shutdown lo0 interface on OSIRIS Router and return by no shutdown command. Next you execute the command clear ip ospf process on any Router.
You can verify authentication in OSPF by execute the command show ip ospf interface

OSIRIS#show ip ospf interface F1/0
FastEthernet1/0 is up, line protocol is up
Internet Address 172.12.12.1/24, Area 0
Process ID 1, Router ID 1.1.1.1, Network Type BROADCAST, Cost: 1
Transmit Delay is 1 sec, State DR, Priority 1
Designated Router (ID) 1.1.1.1, Interface address 172.12.12.1
Backup Designated router (ID) 2.2.2.2, Interface address 172.12.12.2
Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
oob-resync timeout 40
Hello due in 00:00:05
Supports Link-local Signaling (LLS)
Index 1/1, flood queue length 0
Next 0x0(0)/0x0(0)
Last flood scan length is 1, maximum is 1
Last flood scan time is 0 msec, maximum is 4 msec
Neighbor Count is 1, Adjacent neighbor count is 1
Adjacent with neighbor 2.2.2.2 (Backup Designated Router)
Suppress hello for 0 neighbor(s)
Message digest authentication enabled
Youngest key id is 1

Any Question is welcome here.

Determining DR and BDR in OSPF Router

In OSPF Routing protocols, Shortest Path First Algorithm (SPF) is used to determine DR and BDR in OSPF Router. When link-state of a Router on the area change. The Router will be send this change (LSA packet) to multicast address 224.0.0.5 (DR and BDR will receive this information). Then DR in the area will flood this change to multicast address 224.0.0.6 to all other routers (DRother). This will help decrease bandwidth in the area which cause is LSA packet. DR and BDR is determined when Routers exchange Hello Packet. DR and BDR is determined by the following steps:

1. Router that have the heighest priority will become DR and the second is BDR. The following command can configure this parameter in the interface mode:
ip ospf priority
2. In multiaccess environments, all routers is connected together by fastethernet interface. By default, the value of Priority of the Routers is equal. In this case, OSPF Router determine the heighest Router ID of any routers as DR and the second as BDR.
To verify DR and BDR, you can execute the following command in EXEC mode:
show ip ospf neighbor
Note: When DR and BDR is defined, the Router do not automatically change DR and BDR regardless the current DR and BDR have lowest Priority or Router ID of value. You can change manually by execute the command in EXEC mode:
clear ip ospf process
type yes to comfirm
I hope these information are help you clearly understand DR and BDR in OSPF Router. Any question is welcome.

How to determine Router ID on Cisco Routers that running OSPF routing

Have threes factors to determine Router ID in OSPF router
1. You can configure manually the Router ID by following command in Router Mode:
router-id A.B.C.D
example: router-id 1.1.1.1
2. If you do not configure manually the Router ID. OSPF Router will determine the Router ID by chosen the heighest IP Address of logical interfaces (loopback interfaces).
3. If haven't any logical interfaces. OSPF Router will chose the heighest IP address of any physical interfaces

Advanced Password Cisco Router Configuration

To secure your router, you need configurable the password on your router. The password must be difficultly to guess. On Cisco Router, you can configure the password for line console, vty (telnet service) and password to access to EXEC mode. In turn, I will show you how to configure the password for three mode as mentioned above.

1. Console port for login local to the Router, the terminator must be attached directly to Router through this console port. To configure password for console port, you must execute the following command in Configuration mode
line console 0
password cisco
login
Password is cisco
2. Line VTY is responsible for enable the Telnet service on the Router. Execute the following command in Configuration mode
line vty 0 4
password cisco
login
To indicate specially the username and password for each user to telnet to the Router, you can configure a username and a password. To do this, execute the follwing command in Configuration Mode:
username thaolv password 0 thaolv
line vty 0 4
login local
exit
After this, you can telnet to this Rotuer by provide your username and password that configured. Here is the username: thaolv and password: thaolv
3. Enabling password for EXEC mode, you must execute the following command in Configuration mode:
enable secret cisco
By default, Password for the EXEC mode is encrypted in MD5 algorithm, Password for the line VTY and the line Console is not encrypted, but you can configure to encrypt these password by following command in Configuration mode:
service password-encryption
Now, your password for the line VTY and the line Console is encrypted in MD7 algorithm. Verify this by execute the following command in EXEC mode:

show running-config

R2#show run
Building configuration...

Current configuration : 893 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
service password-encryption
!
hostname R2
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
memory-size iomem 5
!
!
ip cef
!
!
!
username thaolv privilege 15 password 7 09584608160901
!
!
!
interface Loopback0
ip address 2.2.2.2 255.255.255.0
!
interface Serial0/0
ip address 172.16.1.2 255.255.255.252
ip rip receive version 1 2
serial restart-delay 0
clock rate 64000
!
interface Serial0/1
no ip address
shutdown
serial restart-delay 0
!
interface Serial0/2
no ip address
shutdown
serial restart-delay 0
!
interface Serial0/3
no ip address
shutdown
serial restart-delay 0
!
router rip
version 2
passive-interface Loopback0
network 2.0.0.0
network 172.16.0.0
no auto-summary
!
ip http server
!
!
!
!
!
control-plane
!
!
line con 0
line aux 0
line vty 0 4
login local
!
end

LAB: Basic OSPF Configuration

Today, i will introduce you Basic OSPF Configuration. Topology in this lab:
Today, i will introduce you Basic OSPF Configuration. Topology in this lab:



Task 1: Perform Basic Router Configurations.
Perform basic configuration of the R1, R2, and R3 routers according to the following guidelines:
1. Configure the router hostname.
2. Disable DNS lookup.
3. Configure an EXEC mode password.
4. Configure a message-of-the-day banner.
5. Configure a password for console connections.
6. Configure a password for VTY connections.
Task 2: Configure and Activate Serial and Ethernet Addresses.
Step 1: Configure interfaces on R1, R2, and R3.
Configure the interfaces on the R1, R2, and R3 routers with the IP addresses and banwidth from the table under the Topology Diagram.
Step 2: Verify IP addressing and interfaces.
Use the show ip interface brief command to verify that the IP addressing is correct and
that the interfaces are active.
When you have finished, be sure to save the running configuration to the NVRAM of the router.
Step 3: Configure Ethernet interfaces of PC1, PC2, and PC3.
Configure the Ethernet interfaces of PC1, PC2, and PC3 with the IP addresses and default
gateways from the table under the Topology Diagram.
Step 4: Test the PC configuration by pinging the default gateway from the PC.
Task 3: Configure OSPF on the R1 Router
Task 4: Configure Authentication on out interfaces that used to exchange routing packets
I will configure R1 and other Router is similar configured.
Task1: Basic Configuration

Router>en
Router#config terminal
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#hostname R1
R1(config)#no ip domain-lookup
R1(config)#line console 0
R1(config-line)#password cisco
R1(config-line)#login
R1(config-line)#line vty 0 4
R1(config-line)#password cisco
R1(config-line)#login
R1(config-line)#exit
R1(config)#enable secret cisco
R1(config)#service password-encryption
R1(config)#banner motd #R1 is configured by THAOLV#

Task 2: Configure and Activate Serial and Ethernet Addresses.
Step 1:

R1(config)#interface Fa0/0
R1(config-if)#ip address 172.16.1.17 255.255.255.240
R1(config-if)#no shut

%LINK-5-CHANGED: Interface FastEthernet0/0, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up
R1(config-if)#interface s0/0/0
R1(config-if)#ip address 192.168.10.1 255.255.255.252
R1(config-if)#no shut

%LINK-5-CHANGED: Interface Serial0/0/0, changed state to down
R1(config-if)#clock rate 64000
R1(config-if)#bandwidth 64
R1(config-if)#interface s0/0/1
R1(config-if)#ip address 192.168.10.5 255.255.255.252
R1(config-if)#no shut

%LINK-5-CHANGED: Interface Serial0/0/1, changed state to down
R1(config-if)#clock rate 64000
R1(config-if)#bandwidth 256

Step 2: Verify IP addressing and interfaces

R1#show ip interface brief
Interface IP-Address OK? Method Status Protocol

FastEthernet0/0 172.16.1.17 YES manual up up

FastEthernet0/1 unassigned YES manual administratively down down

Serial0/0/0 192.168.10.1 YES manual down down

Serial0/0/1 192.168.10.5 YES manual down down

Vlan1 unassigned YES manual administratively down down

The status of the S0/0/0 and S0/0/1 are down because it is up when there is a signal impact to it.

Step 3 and 4: You can manual configuring, i don't show here
Task 3: Configure OSPF on the R1 Router

R1(config)#router ospf 1
R1(config-router)#network 172.16.1.17 255.255.255.240 area 0
R1(config-router)#network 192.168.10.1 255.255.255.252 area 0
R1(config-router)#network 192.168.10.5 255.255.255.252 area 0
R1(config-router)#passive-interface fa0/0

Task 4: Configure authentication
I will configure authentication on the interface S0/0/0:

R1(config)#interface S0/0/0
R1(config-if)#ip ospf message-digest-key 10 md5 PASSWORD
R1(config)#router ospf 1
R1(config-router)#area 0 authentication message-digest

Done!

What is the difference between OSPF E2 Routes and E1 Routes

Look at the figure above, when using OSPF dynamic routing, all routers exchange Link-State Packets between each Router. Router A is Autonomous System Border Router (ASBR) because it advertises external link to internal Routers. With RIP, IGRP, EIGRP the external network is in one type, but with OSPF the external network is redistributed by 2 types: E1 and E2

R1#show 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

E2 is the default routes type for routes learned via redistribution. For example, Router C and other routers in the routing domain will learn external networks that Router A redistribute with cost from Router A to external network.

If Router A is configurable with E1. At this time, Router C in the routing domain will learn external networks via Router A with cost is cost of Router C to Router A and Router A to destination network

RA#conf t
Enter configuration commands, one per line. End with CNTL/Z.
RA(config)#router ospf 1
RA(config-router)#redistribute rip subnets metric-type 1

After configure external type 1, the cost from RouterC to External network is larger the cost from RouterC to external network with E2 configuration.

Mô hình Lab nâng cao RIPv2 và EIGRP

Mô hình lab:Mô hình gồm 4 Router được đặt tên như trên hình.
Dải địa chỉ IP được cấp: 172.16.0.0/16
Số host trên mỗi Router được chia như trên hình vẽ.
Yêu cầu:
Cấu hình Router cơ bản: Hostname, domain-lookup, password, banner,...
Cấu hình IP trên các Interface.
Cấu hình RIPv2 hoặc EIGRP: no auto, network, redistribute, passive-interface...
Manual summary IP address trên các Interface: ip summary-address.
Cấu hình Authentication: ip authentication
File cấu hình bằng Dynamips:

#####################################################################
# Lab Topology mappings for dynamips/dynagen
# Lab RIPv2, EIGRP advanced configuration.
# By THAOLV
#
#####################################################################

autostart = false

[localhost]
workingdir = C:\Program Files\Dynamips\sample_labs\CNAP_BSCI\EIGRP

[[7200]]
image = \Program Files\Dynamips\images\c7200-a3jk9s-mz.122-23.bin
idlepc = 0x6070c44c
npe = npe-400
ram = 160

[[ROUTER R1]]
console = 2001
S1/0 = R2 S1/0
S1/1 = R3 S1/0

[[ROUTER R2]]
console = 2002
S1/1 = R3 S1/1

[[ROUTER R3]]
console = 2003
S2/0 = R4 S1/0

[[ROUTER R4]]
console = 2004

Download đầy đủ: Topology, Bảng chia IP + Yêu cầu, File .net

Dynamips EIGRP Lab Topology

Here is some EIGRP lab topologies that I found on the internet. The labs using dynamips

Lab 2-1 EIGRP Configuration, Bandwidth, and Adjacencies



#####################################################################
# Cisco Networking Academy Program CCNP
# BSCI 642-901 Version 5.0 Lab Topology mappings for dynamips/dynagen
# Lab 2-1 EIGRP Configuration, Bandwidth, and Adjacencies
# By CiscoJourney
#
#####################################################################

autostart = false

[localhost]
workingdir = C:\Program Files\Dynamips\sample_labs\CNAP_BSCI\LAB_2.1_EIGRP\working

[[7200]]
image = \Program Files\Dynamips\images\c7200-adventerprisek9-mz.124-4.T1.image
idlepc = 0x6070c44c
npe = npe-400
ram = 160

[[ROUTER R1]]
console = 2001
f0/0 = SW1 1
S1/0 = R2 S1/0

[[ROUTER R2]]
console = 2002
f0/0 = SW1 3

[[ROUTER R3]]
console = 2003
f0/0 = SW1 5

[[ETHSW SW1]]
1 = access 1
3 = access 1
5 = access 1

Lab 2-2 EIGRP Load Balancing



#####################################################################
# Cisco Networking Academy Program CCNP
# BSCI 642-901 Version 5.0 Lab Topology mappings for dynamips/dynagen
# Lab 2-2 EIGRP Load Balancing
# By CiscoJourney
#
#####################################################################

autostart = false

[localhost]
workingdir = C:\Program Files\Dynamips\sample_labs\CNAP_BSCI\LAB_2.2_EIGRP\working

[[7200]]
image = \Program Files\Dynamips\images\c7200-adventerprisek9-mz.124-4.T1.image
idlepc = 0x6070c44c
npe = npe-400
ram = 160

[[ROUTER R1]]
console = 2001
S1/0 = R2 S1/0
S1/1 = R3 S1/0

[[ROUTER R2]]
console = 2002
S1/1 = R3 S1/1

[[ROUTER R3]]
console = 2003

Lab 2-3 Summarization and Default Network Advertisement



#####################################################################
# Cisco Networking Academy Program CCNP
# BSCI 642-901 Version 5.0 Lab Topology mappings for dynamips/dynagen
# Lab 2-3 Summarization and Default Network Advertisement
# By CiscoJourney
#
#####################################################################

autostart = false

[localhost]
workingdir = C:\Program Files\Dynamips\sample_labs\CNAP_BSCI\LAB_2.3_EIGRP\working

[[7200]]
image = \Program Files\Dynamips\images\c7200-adventerprisek9-mz.124-4.T1.image
idlepc = 0x6070c44c
npe = npe-400
ram = 160

[[ROUTER R1]]
console = 2001
S1/0 = R2 S1/0

[[ROUTER R2]]
console = 2002
S1/1 = R3 S1/1

[[ROUTER R3]]
console = 2003


Lab 2-4 EIGRP Authentication and Timers



#####################################################################
# Cisco Networking Academy Program CCNP
# BSCI 642-901 Version 5.0 Lab Topology mappings for dynamips/dynagen
# Lab 2-5 EIGRP Authentication and Timers
# By CiscoJourney
#
#####################################################################

autostart = false

[localhost]
workingdir = C:\Program Files\Dynamips\sample_labs\CNAP_BSCI\LAB_2.5_EIGRP\working

[[7200]]
image = \Program Files\Dynamips\images\c7200-adventerprisek9-mz.124-4.T1.image
idlepc = 0x6070c44c
npe = npe-400
ram = 160

[[ROUTER R1]]
console = 2001
f0/0 = SW1 1
S1/0 = R2 S1/0
S1/1 = R3 S1/0

[[ROUTER R2]]
console = 2002
f0/0 = SW1 3
S1/1 = R3 S1/1

[[ROUTER R3]]
console = 2003
f0/0 = SW1 5

[[ETHSW SW1]]
1 = access 1
3 = access 1
5 = access 1

Advanced EIGRP Lab

Đúng là pó tay với cái Packet Tracer, cấu hình một thôi một hồi tự nhiên nó tắt ngóm, không hiện 1 cái massage, bao công cấu hình đi tong, ức chế...

Mô hình LabBảng cấu hình IP trên từng Interface:

R1	Fa0/0	192.168.12.1	255.255.255.0
	Fa0/1	192.168.13.1	255.255.255.0
R2	S0/0	192.168.24.1	255.255.255.0
	Fa0/0	192.168.12.2	255.255.255.0
R3	S0/1	192.168.34.1	255.255.255.0
	Fa0/0	192.168.13.2	255.255.255.0
R4	S0/0	192.168.24.2	255.255.255.0
	S0/1	192.168.34.2	255.255.255.0
	Fa0/0	192.168.45.1	255.255.255.0
R5	S0/0	192.168.56.1	255.255.255.0
	S0/1	192.168.57.1	255.255.255.0
	Fa0/0	192.168.45.2	255.255.255.0
R6	S0/0	192.168.56.2	255.255.255.0
	S0/1	192.168.68.1	255.255.255.0
R7	S0/0	192.168.78.1	255.255.255.0
	S0/1	192.168.56.2	255.255.255.0
R8	S0/0	192.168.78.2	255.255.255.0
	S0/1	192.168.68.2	255.255.255.0
	Fa0/0	192.168.89.1	255.255.255.0
R9	S0/0	192.168.109.1	255.255.255.0
	Fa0/0	192.168.89.2	255.255.255.0
	Fa0/1	192.168.119.1	255.255.255.0
R10	S0/0	192.168.109.2	255.255.255.0
	Fa0/1	192.168.120.1	255.255.255.0
R11	Fa0/0	192.168.121.1	255.255.255.0
	Fa0/1	192.168.119.2	255.255.255.0
R12	Fa0/0	192.168.121.2	255.255.255.0
	Fa0/1	192.168.120.2	255.255.255.0

Yêu cầu:
Cấu hình IP trên các Interface trên từng Router như bảng trên.
Mỗi Router sẽ có 1 interface loopback giả lập mạng LAN với địa chỉ có dạng Y.Y.Y.0/24. Ví dụ Router 1 sẽ có LAN: 1.1.1.0/24
Cấu hình passwords routers: secret, line console, line VTY, password-encryption.
Cấu hình EIGRP trên mỗi Router: enable EIGRP, Network, Passive-interface, no auto-summary, Redistribute eigrp, Authentication.
Verify and Troubleshooting.

Download tài liệu chi tiết: Advanced EIGRP Lab
Mô hình Packet Tracer chưa cấu hình: Mô hình trắng.