EIGRP Lab 24 : EIGRP OTP (Over The Top)

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 LAB 24


Jika kita punya kebutuhan untuk menghubungkan router yang tidak terhubung langsung dengan router kita dan terpisah oleh ISP, maka kita bisa menggunakan fitur EIGRP Over The Top. Berikut Konfigurasinya. 

R1

R1(config)#int loopback0 
R1(config-if)#ip add 1.1.1.1 255.255.255.255 
R1(config-if)#exit 
R1(config)#int e0/0 
R1(config-if)#ip add 14.14.14.1 255.255.255.0 
R1(config-if)#no shutdown 
R1(config-if)#exit 
R1(config)#ip route 0.0.0.0 0.0.0.0 14.14.14.4

R2

R2(config)#int loopback0 
R2(config-if)#ip add 2.2.2.2 255.255.255.255 
R2(config)#int e0/0 
R2(config-if)#ip add 24.24.24.2 255.255.255.0 
R2(config-if)#no shutdown 
R2(config)#ip route 0.0.0.0 0.0.0.0 24.24.24.4

R3

R3(config)#int loopback0 
R3(config-if)#ip add 3.3.3.3 255.255.255.255 
R3(config-if)#ex 
R3(config)#int e0/0 
R3(config-if)#ip add 34.34.34.3 255.255.255.0 
R3(config-if)#no shutdown 
R3(config-if)#ex 
R3(config)#ip route 0.0.0.0 0.0.0.0 34.34.34.4 

R4

R4(config)#int e0/0 
R4(config-if)#ip add 14.14.14.4 255.255.255.0 
R4(config-if)#no shutdown 
R4(config-if)#exit 
R4(config)#int e0/1 
R4(config-if)#ip add 24.24.24.4 255.255.255.0 
R4(config-if)#no shutdown 
R4(config-if)#exit 
R4(config)#int e0/2 
R4(config-if)#ip add 34.34.34.4 255.255.255.0 
R4(config-if)#no shutdown 
R4(config-if)#exit 

Untuk EIGRP OTP ini hanya bisa dilakukan pada versi IOS 15.x keatas yang support EIGRP Named Configuration. Untuk konfigurasi EIGRP OTP ada dua options : 

• Setiap router konek satu sama lain (full-mesh) 

• Satu router dijadikan pusat remote-neighbor (mirip seperti BGP Route-reflector) 

Untuk lab ini kita akan menggunakan yang Opsi kedua yaitu menjadikan R1 menjadi routereflector. Coba ping dulu ke ip neighbor pastikan berhasil. 

R1

R1#ping 24.24.24.2 
Type escape sequence to abort. 
Sending 5, 100-byte ICMP Echos to 24.24.24.2, timeout is 2 seconds: 
!!!!! 
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/1 ms

R1#ping 34.34.34.3 
Type escape sequence to abort. 
Sending 5, 100-byte ICMP Echos to 34.34.34.3, timeout is 2 seconds: 
!!!!! 
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/1 ms

Mulai Konfigurasi EIGRP OTP nya :

R1

R1(config)#router eigrp IDN 
R1(config-router)#address-family ipv4 unicast autonomous-system 123 
R1(config-router-af)#remote-neighbors source Ethernet0/0 unicast-listen lispencap 123 
R1(config-router-af)#af-interface Ethernet0/0 
R1(config-router-af-interface)#no next-hop-self 
R1(config-router-af-interface)#no split-horizon 
R1(config-router-af)#network 1.1.1.1 0.0.0.0 
R1(config-router-af)#network 14.14.14.0 0.0.0.255 
R1(config-router-af)#exit-address-family 

R2

R2(config)#router eigrp IDN 
R2(config-router)#address-family ipv4 unicast autonomous-system 123 
R2(config-router-af)#neighbor 14.14.14.1 Ethernet0/0 remote 2 lisp-encap 123 
R2(config-router-af)#network 2.2.2.2 0.0.0.0 
R2(config-router-af)#network 24.24.24.2 0.0.0.0 
R2(config-router-af)#exit-address-family

R3

R3(config)#router eigrp IDN 
R3(config-router)#address-family ipv4 unicast autonomous-system 123 
R3(config-router-af)#neighbor 14.14.14.1 Ethernet0/0 remote 2 lisp-encap 123 
R3(config-router-af)#network 3.3.3.3 0.0.0.0 
R3(config-router-af)#network 34.34.34.3 0.0.0.0 
R3(config-router-af)#exit-address-family 

Pastikan interface LISP 123 sudah “up” di R2 dan R3

R2

R2#sh ip interface brief | i up 
Ethernet0/0 24.24.24.2 YES manual up up 
LISP123     2.2.2.2    YES unset up up 
Loopback0   2.2.2.2    YES manual up up

R3

R3#sh ip int brief | i up 
Ethernet0/0 34.34.34.3 YES manual up up 
LISP123     3.3.3.3    YES unset up up 
Loopback0   3.3.3.3    YES manual up up 

Cek juga apakah EIGRP Neighbornya sudah “up”

R1

R1#sh ip eigrp neighbors 
EIGRP-IPv4 VR(IDN) Address-Family Neighbors for AS(123) H 
Address Interface Hold Uptime SRTT RTO Q 
                  Seq (sec) (ms) Cnt Num 
1 34.34.34.3 Et0/0 14 00:05:42 9 100 0 3 
0 24.24.24.2 Et0/0 14 00:08:35 6 100 0 4

Cek routing table nya dan lakukan ping

R2

R2#sh ip route eigrp 
 1.0.0.0/32 is subnetted, 1 subnets 
D 1.1.1.1 [90/94501211] via 14.14.14.1, 00:11:00, LISP123 
 3.0.0.0/32 is subnetted, 1 subnets 
D 3.3.3.3 [90/94501211] via 34.34.34.3, 00:08:07, LISP123

R3

R3#sh ip route eigrp 
 1.0.0.0/32 is subnetted, 1 subnets 
D 1.1.1.1 [90/94501211] via 14.14.14.1, 00:08:17, LISP123 
 2.0.0.0/32 is subnetted, 1 subnets 
D 2.2.2.2 [90/94501211] via 24.24.24.2, 00:08:17, LISP123

R2

R2#ping 1.1.1.1 
Type escape sequence to abort. 
Sending 5, 100-byte ICMP Echos to 1.1.1.1, timeout is 2 seconds: 
!!!!! 
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/2 ms

R3

R3#ping 3.3.3.3 
Type escape sequence to abort. 
Sending 5, 100-byte ICMP Echos to 3.3.3.3, timeout is 2 seconds: 
!!!!! 
Success rate is 100 percent (5/5), round-trip min/avg/max = 4/4/5 ms


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