1 Enhanced Interior Gateway Routing Protocol Cisco proprietary

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Enhanced Interior Gateway Routing Protocol • Cisco proprietary protocol • Classless routing protocol • Includes all features of IGRP • Metric (32 bit) : Composite Metric • Administrative distance is Internal 90 or External 170 • Supports IP, IPX and Apple Talk protocols • Updates are Multicast • Works with Diffusion Update Algorithm (DUAL) • Hello packets are send every 5 seconds • Convergence is fastest. 2

EIGRP - Network Diagram 10. 0. 0. 1/8 S 0 HYD 11. 0. 0. 1/8 S 0 S 1 10. 0. 0. 2/8 E 0 192. 168. 1. 150/24 LAN - 192. 168. 1. 0/24 CHE S 1 11. 0. 0. 2/8 E 0 192. 168. 2. 150/24 LAN - 192. 168. 2. 0/24 BAN E 0 192. 168. 3. 150/2 LAN - 192. 168. 3. 0/24 3

Disadvantages of EIGRP • Only works on Cisco Routers 4

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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 Hyderabad> enable HYDERABAD Router password : **** Hyderabad# configure terminal 192. 168. 1. 0 Enter configuration commands, one per line. End with CNTL/Z. 10. 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

Hyderabad(config)# no ip routing Hyderabad(config)# router eigrp 10 Hyderabad(config-router)# network 192. 168. 1. 0 Hyderabad(config-router)# network 10. 0 Hyderabad(config-router)# Configuring EIGRP Router(config)# router eigrp <as no> Router(config-router)# network <Network ID> 7

Hyderabad(config)# no ip routing Hyderabad(config)# router eigrp 10 Hyderabad(config-router)# network 192. 168. 1. 0 Hyderabad(config-router)# network 10. 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 N 1 - OSPF NSSA external type 1, N 2 - OSPF NSSA external type 2 E 1 - OSPF external type 1, E 2 - OSPF external type 2, E - EGP i- IS-IS, L 1 -IS-IS level-1, L 2 -IS-IS level-2, *- candidate default U - per-user static route, o - ODR Gateway of last resort is not set C 10. 0/8 is directly connected, Serial 0 D 11. 0. 0. 0/8 [90/2681856] via 10. 0. 0. 2, 00: 49, Serial 0 C 192. 168. 1. 0/24 is directly connected, Ethernet 0 D 192. 168. 2. 0/24 [90/2195456] 10. 0. 0. 2, 00: 49, Serial 0 ofvia EIGRP 90 is. Metric nothing but D – for EIGRP routes Administrative Distance D 192. 168. 3. 0/24 [90/2707456] via 10. 0. 0. 2, 00: 25, Serial 0 Composite Metric Hyderabad# 8

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. 0/8, 1 successors, FD is 2169856 via Connected, Serial 0 P 11. 0. 0. 0/8, 1 successors, FD is 2681856 via 10. 0. 0. 2 (2681856/2169856), Serial 0 P 192. 168. 1. 0/24, 1 successors, FD is 281600 via Connected, Ethernet 0 P 192. 168. 2. 0/24, 1 successors, FD is 2195456 via 10. 0. 0. 2 (2195456/281600), Serial 0 P 192. 168. 3. 0/24, 1 successors, FD is 2707456 via 10. 0. 0. 2 (2707456/2195456), Serial 0 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 Se 0 13 00: 07: 24 42 252 0 8 Hyderabad# 9

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 : **** Chennai> enable Directly Connected Networks on CHENNAI Router password : **** Chennai# configure terminal 192. 168. 2. 0 Enter configuration commands, one per line. End with CNTL/Z. 10. 0 Chennai(config)# interface serial 1 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

Chennai(config)# no ip routing Chennai(config)# router eigrp 10 Chennai(config-router)# network 192. 168. 2. 0 Chennai(config-router)# network 10. 0 Chennai(config-router)# network 11. 0. 0. 0 Configuring EIGRP Chennai(config-router)# Router(config)# router eigrp <as no> Router(config-router)# network <Network ID> 11

Chennai(config)# no ip routing Chennai(config)# router eigrp 10 Chennai(config-router)# network 192. 168. 2. 0 Chennai(config-router)# network 10. 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 N 1 - OSPF NSSA external type 1, N 2 - OSPF NSSA external type 2 E 1 - OSPF external type 1, E 2 - OSPF external type 2, E - EGP i- IS-IS, L 1 -IS-IS level-1, L 2 -IS-IS level-2, *- candidate default U - per-user static route, o - ODR Gateway of last resort is not set C 10. 0/8 is directly connected, Serial 1 C 11. 0. 0. 0/8 is directly connected, Serial 0 D 192. 168. 1. 0/24 [90/2195456] via 10. 0. 0. 1, 00: 01: 27, Serial 1 C 192. 168. 2. 0/24 is directly connected, Ethernet 0 D 192. 168. 3. 0/24 [90/2195456] viaof 11. 0. 0. 2, 00: 01: 00, Serial 0 IGRP 90 is Metric nothing but D – for EIGRP routes 12 Administrative Distance Chennai# Composite Metric

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. 0/8, 1 successors, FD is 2169856 via Connected, Serial 1 P 11. 0. 0. 0/8, 1 successors, FD is 2169856 via Connected, Serial 0 P 192. 168. 1. 0/24, 1 successors, FD is 2195456 via 10. 0. 0. 1 (2195456/281600), Serial 1 P 192. 168. 2. 0/24, 1 successors, FD is 281600 via Connected, Ethernet 0 P 192. 168. 3. 0/24, 1 successors, FD is 2195456 via 11. 0. 0. 2 (2195456/281600), Serial 0 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 Se 0 12 00: 11: 34 389 2334 0 10. 0. 0. 1 Se 1 13 00: 12: 02 27 200 0 5 Chennai# 13

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 : **** Banglore> enable. Directly Connected Networks on Banglore Router password : **** Banglore# configure terminal 192. 168. 3. 0 Enter configuration commands, one per line. End with CNTL/Z. 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

Banglore(config)# no 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 Router(config)# router eigrp <as no> Router(config-router)# network <Network ID> 15

Banglore(config)# no 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 N 1 - OSPF NSSA external type 1, N 2 - OSPF NSSA external type 2 E 1 - OSPF external type 1, E 2 - OSPF external type 2, E - EGP i- IS-IS, L 1 -IS-IS level-1, L 2 -IS-IS level-2, *- candidate default U - per-user static route, o - ODR Gateway of last resort is not set D 10. 0/8 [90/2681856] via 11. 0. 0. 1, 00: 01: 32, Serial 1 C 11. 0. 0. 0/8 is directly connected, Serial 1 D 192. 168. 1. 0/24 [90/2707456] 11. 0. 0. 1, 00: 01: 32, Serial 1 ofvia IGRP 90 is Metric nothing but for EIGRP routes D D – 192. 168. 2. 0/24 [90/2195456] via 11. 0. 0. 1, 00: 01: 32, Serial 1 Administrative Distance Composite Metric C 192. 168. 3. 0/24 is directly connected, Ethernet 0 Banglore# 16

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. 0/8, 1 successors, FD is 2681856 via 11. 0. 0. 1 (2681856/2169856), Serial 1 P 11. 0. 0. 0/8, 1 successors, FD is 2169856 via Connected, Serial 1 P 192. 168. 1. 0/24, 1 successors, FD is 2707456 via 11. 0. 0. 1 (2707456/2195456), Serial 1 P 192. 168. 2. 0/24, 1 successors, FD is 2195456 via 11. 0. 0. 1 (2195456/281600), Serial 1 P 192. 168. 3. 0/24, 1 successors, FD is 281600 via Connected, Ethernet 0 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 Se 1 14 00: 14: 15 36 216 0 7 Banglore# 17

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

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

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