The document details the Enhanced Interior Gateway Routing Protocol (EIGRP), a Cisco proprietary classless routing protocol that includes various metrics for route calculation. It describes the configuration and command sequences for three routers in a network (Hyderabad, Chennai, Bangalore), along with their directly connected networks and routing table information. EIGRP is noted to only work on Cisco routers and offers features like fast convergence and multicast updates.

1. 1

2. Enhanced Interior Gateway
Routing Protocol
• Cisco proprietary protocol
• Classless routing protocol
• Includes all features of IGRP
• Metric (32 bit) : Composite Metric
(BW + Delay + load + MTU + reliability )
• Administrative distance is 90
• Updates are through Multicast (224.0.0.10 )
• Max Hop count is 255 (100 by default)
• Supports IP, IPX and Apple Talk protocols
• Hello packets are sent every 5 seconds
• Convergence rate is fast
2

3. EIGRP - Network Diagram
10.0.0.1/8
S0
HYD
11.0.0.1/8
S0
S1
10.0.0.2/8
E0
192.168.1.150/24
LAN - 192.168.1.0/24
CHE
S1
11.0.0.2/8
E0
192.168.2.150/24
LAN - 192.168.2.0/24
BAN
E0
192.168.3.150/2
LAN - 192.168.3.0/24
3

4. Disadvantages of EIGRP
• Works only on Cisco Routers
4

5. 5

6. Microsoft Windows 2000 [Version 5.00.2195]
(C) Copyright 1985-2000 Microsoft Corp.
C:> telnet 192.168.1.150
Connecting .....
================================
Welcome to Hyderabad Router
================================
User Access Verification
password : ****
Directly Connected Networks on
Directly Connected Networks on
Hyderabad> enable
HYDERABAD Router
password : ****
HYDERABAD Router
Hyderabad# configure terminal
192.168.1.0
192.168.1.0
Enter configuration commands, one per line. End with CNTL/Z.
10.0.0.0
10.0.0.0
Hyderabad(config)# interface serial 0
Hyderabad(config-if)# ip address 10.0.0.1 255.0.0.0
Hyderabad(config-if)# no shut
Hyderabad(config-if)# clockrate 64000
Hyderabad(config-if)# encapsulation hdlc
Hyderabad(config-if)# exit
Hyderabad(config)#
6

7. Hyderabad(config)# no ip routing
Hyderabad(config)# ip routing
Hyderabad(config)# router eigrp 10
Hyderabad(config-router)# network 192.168.1.0
Hyderabad(config-router)# network 10.0.0.0
Hyderabad(config-router)#
Configuring EIGRP
Configuring EIGRP
Router(config)# router eigrp <as no>
Router(config)# router eigrp <as no>
Router(config-router)# network <Network ID>
Router(config-router)# network <Network ID>
7

8. Hyderabad(config)# no ip routing
Hyderabad(config)# ip routing
Hyderabad(config)# router eigrp 10
Hyderabad(config-router)# network 192.168.1.0
Hyderabad(config-router)# network 10.0.0.0
Hyderabad(config-router)# ^Z
Hyderabad# 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
i- IS-IS, L1-IS-IS level-1, L2-IS-IS level-2,*- candidate default
U - per-user static route, o - ODR
Gateway of last resort is not set
C
10.0.0.0/8 is directly connected, Serial0
D
11.0.0.0/8 [90/2681856] via 10.0.0.2, 00:00:49, Serial0
C
192.168.1.0/24 is directly connected, Ethernet0
D
192.168.2.0/24 [90/2195456] via 10.0.0.2, 00:00:49, Serial0
Metric of EIGRP
90 isMetricof EIGRP
90 isnothing but
nothing but
D – for EIGRP routes
D –192.168.3.0/24 [90/2707456]Distance
for EIGRP routes
Administrative Distance
D
Composite Metric
Administrative via 10.0.0.2, 00:00:25, Serial0
Composite Metric
Hyderabad#
8

9. Hyderabad# show ip eigrp topology
IP-EIGRP Topology Table for process 10
Codes: P - Passive, A - Active, U - Update, Q - Query, R - Reply,
r - Reply status
P 10.0.0.0/8, 1 successors, FD is 2169856
via Connected, Serial0
P 11.0.0.0/8, 1 successors, FD is 2681856
via 10.0.0.2 (2681856/2169856), Serial0
P 192.168.1.0/24, 1 successors, FD is 281600
via Connected, Ethernet0
P 192.168.2.0/24, 1 successors, FD is 2195456
via 10.0.0.2 (2195456/281600), Serial0
P 192.168.3.0/24, 1 successors, FD is 2707456
via 10.0.0.2 (2707456/2195456), Serial0
Hyderabad# show ip eigrp neighbors
IP-EIGRP neighbors for process 10
H
Address
Interface
Hold Uptime
SRTT
RTO Q Seq
(sec)
(ms)
Cnt Num
0
10.0.0.2
Se0
13 00:07:24
42
252 0 8
Hyderabad#
9

10. Microsoft Windows 2000 [Version 5.00.2195]
(C) Copyright 1985-2000 Microsoft Corp.
C:> telnet 192.168.2.150
Connecting .....
================================
Welcome to Chennai Router
================================
User Access Verification
password : ****
Directly Connected Networks on
Chennai> enable Directly Connected Networks on
CHENNAI Router
password : ****
CHENNAI Router
Chennai# configure terminal
192.168.2.0
192.168.2.0
Enter configuration commands, one per line. End with CNTL/Z.
10.0.0.0
10.0.0.0
Chennai(config)# interface serial 1
11.0.0.0
11.0.0.0
Chennai(config-if)# ip address 10.0.0.2 255.0.0.0
Chennai(config-if)# no shut
Chennai(config-if)# encapsulation hdlc
Chennai(config-if)# interface serial 0
Chennai(config-if)# ip address 11.0.0.1 255.0.0.0
Chennai(config-if)# no shut
Chennai(config-if)# encapsulation hdlc
10

11. Chennai(config)# no ip routing
Chennai(config)# ip routing
Chennai(config)# router eigrp 10
Chennai(config-router)# network 192.168.2.0
Chennai(config-router)# network 10.0.0.0
Chennai(config-router)# network 11.0.0.0
Configuring EIGRP
Configuring EIGRP
Chennai(config-router)#
Router(config)# router eigrp <as no>
Router(config)# router eigrp <as no>
Router(config-router)# network <Network ID>
Router(config-router)# network <Network ID>
11

12. Chennai(config)# no ip routing
Chennai(config)# ip routing
Chennai(config)# router eigrp 10
Chennai(config-router)# network 192.168.2.0
Chennai(config-router)# network 10.0.0.0
Chennai(config-router)# network 11.0.0.0
^
Chennai(config-router)# Z
Chennai# 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
i- IS-IS, L1-IS-IS level-1, L2-IS-IS level-2,*- candidate default
U - per-user static route, o - ODR
Gateway of last resort is not set
C
10.0.0.0/8 is directly connected, Serial1
C
11.0.0.0/8 is directly connected, Serial0
D
192.168.1.0/24 [90/2195456] via 10.0.0.1, 00:01:27, Serial1
C
192.168.2.0/24 is directly connected, Ethernet0
D
192.168.3.0/24 [90/2195456] viaof but
90 isMetric ofIGRP
nothing but
90 isMetric 11.0.0.2, 00:01:00, Serial0
nothing IGRP
D – for EIGRP routes
D – for EIGRP routesAdministrative Distance
Chennai#
Composite Metric
Administrative Distance
Composite Metric 12

13. Chennai# show ip eigrp topology
IP-EIGRP Topology Table for process 10
Codes: P - Passive, A - Active, U - Update, Q - Query, R - Reply,
r - Reply status
P 10.0.0.0/8, 1 successors, FD is 2169856
via Connected, Serial1
P 11.0.0.0/8, 1 successors, FD is 2169856
via Connected, Serial0
P 192.168.1.0/24, 1 successors, FD is 2195456
via 10.0.0.1 (2195456/281600), Serial1
P 192.168.2.0/24, 1 successors, FD is 281600
via Connected, Ethernet0
P 192.168.3.0/24, 1 successors, FD is 2195456
via 11.0.0.2 (2195456/281600), Serial0
Chennai# show ip eigrp neighbors
IP-EIGRP neighbors for process 10
H
Address
Interface
Hold Uptime
SRTT
RTO Q Seq
(sec)
(ms)
Cnt Num
1
11.0.0.2
Se0
12 00:11:34 389 2334 0 4
0
10.0.0.1
Se1
13 00:12:02
27
200 0 5
Chennai#
13

14. Microsoft Windows 2000 [Version 5.00.2195]
(C) Copyright 1985-2000 Microsoft Corp.
C:> telnet 192.168.3.150
Connecting .....
================================
Welcome to Banglore Router
================================
User Access Verification
password : ****
Directly Connected Networks on
Banglore> enableDirectly Connected Networks on
Banglore Router
password : ****
Banglore Router
Banglore# configure terminal
192.168.3.0
192.168.3.0
Enter configuration commands, one per line. End with CNTL/Z.
11.0.0.0
11.0.0.0
Banglore(config)# interface serial 1
Banglore(config-if)# ip address 11.0.0.2 255.0.0.0
Banglore(config-if)# no shut
Banglore(config-if)# clockrate 64000
Banglore(config-if)# encapsulation hdlc
Banglore(config-if)# exit
Banglore(config)#
14

15. Banglore(config)# no ip routing
Banglore(config)# ip routing
Banglore(config)# router eigrp 10
Banglore(config-router)# network 192.168.3.0
Banglore(config-router)# network 11.0.0.0
Banglore(config-router)#
Configuring EIGRP
Configuring EIGRP
Router(config)# router eigrp <as no>
Router(config)# router eigrp <as no>
Router(config-router)# network <Network ID>
Router(config-router)# network <Network ID>
15

16. Banglore(config)# no ip routing
Banglore(config)# ip routing
Banglore(config)# router eigrp 10
Banglore(config-router)# network 192.168.3.0
Banglore(config-router)# network 11.0.0.0
Banglore(config-router)# ^Z
Banglore# 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
i- IS-IS, L1-IS-IS level-1, L2-IS-IS level-2,*- candidate default
U - per-user static route, o - ODR
Gateway of last resort is not set
D
10.0.0.0/8 [90/2681856] via 11.0.0.1, 00:01:32, Serial1
C
11.0.0.0/8 is directly connected, Serial1
D
192.168.1.0/24 [90/2707456] via 11.0.0.1, 00:01:32, Serial1
90 isMetric of but
nothing IGRP
nothing IGRP
D – 192.168.2.0/24 [90/2195456] of but11.0.0.1, 00:01:32, Serial1
for EIGRP routes 90 isMetric via
D D – for EIGRP routes
Administrative Distance
Composite Metric
Administrative Distance
Composite Metric
C
192.168.3.0/24 is directly connected, Ethernet0
Banglore#
16

17. Banglore# show ip eigrp topology
IP-EIGRP Topology Table for process 10
Codes: P - Passive, A - Active, U - Update, Q - Query, R - Reply,
r - Reply status
P 10.0.0.0/8, 1 successors, FD is 2681856
via 11.0.0.1 (2681856/2169856), Serial1
P 11.0.0.0/8, 1 successors, FD is 2169856
via Connected, Serial1
P 192.168.1.0/24, 1 successors, FD is 2707456
via 11.0.0.1 (2707456/2195456), Serial1
P 192.168.2.0/24, 1 successors, FD is 2195456
via 11.0.0.1 (2195456/281600), Serial1
P 192.168.3.0/24, 1 successors, FD is 281600
via Connected, Ethernet0
Banglore# show ip eigrp neighbors
IP-EIGRP neighbors for process 10
H
Address
Interface
Hold Uptime
SRTT
RTO Q Seq
(sec)
(ms)
Cnt Num
0
11.0.0.1
Se1
14 00:14:15
36
216 0 7
Banglore#
17

18. Hyderabad# ping 192.168.3.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.3.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 40/43/44 ms
Hyderabad# ping 192.168.2.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.2.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 40/43/44 ms
Hyderabad#
18

19. Chennai# ping 192.168.1.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.1.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 40/43/44 ms
Chennai# ping 192.168.3.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.3.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 40/43/44 ms
Chennai#
19

20. Banglore# ping 192.168.1.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.1.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 40/43/44 ms
Banglore# ping 192.168.2.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.2.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 40/43/44 ms
Banglore#
20