EIGRP - Default Route - Summary Address
Hapus dulu konfigurasi EIGRP Unicast Update di R1 dan R2
R1(config)#router eigrp 1
R1(config-router)#no neighbor 12.12.12.2 Serial2/0
R2(config)#router eigrp 1
R2(config-router)#no neighbor 12.12.12.1 Serial2/0
Bikin IP Address Loopback 1 - 5 di R1
interface Loopback1
ip address 10.10.10.1 255.255.255.255
!
interface Loopback2
ip address 10.10.10.2 255.255.255.255
!
interface Loopback3
ip address 10.10.10.3 255.255.255.255
!
interface Loopback4
ip address 10.10.10.4 255.255.255.255
!
interface Loopback5
ip address 10.10.10.5 255.255.255.255
!
interface Loopback6
ip address 10.10.10.6 255.255.255.255
!
Konfigurasikan default route di Interfaces R1 yang terhbung ke R2
R1(config)#int s2/0
R1(config-if)#ip summary-address eigrp 1 0.0.0.0 0.0.0.0
Verifikasi routing table di R1
R1(config)#do sh ip route
Codes: L - local, 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, H - NHRP, l - LISP
a - application route
+ - replicated route, % - next hop override
Gateway of last resort is 0.0.0.0 to network 0.0.0.0
D* 0.0.0.0/0 is a summary, 00:00:22, Null0
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
D 2.2.2.2 [90/2297856] via 12.12.12.2, 00:02:44, Serial2/0
3.0.0.0/32 is subnetted, 1 subnets
D 3.3.3.3 [90/2323456] via 12.12.12.2, 00:02:44, Serial2/0
10.0.0.0/8 is variably subnetted, 7 subnets, 2 masks
D 10.0.0.0/29 [90/2323456] via 12.12.12.2, 00:02:44, Serial2/0
C 10.10.10.1/32 is directly connected, Loopback1
C 10.10.10.2/32 is directly connected, Loopback2
C 10.10.10.3/32 is directly connected, Loopback3
C 10.10.10.4/32 is directly connected, Loopback4
C 10.10.10.5/32 is directly connected, Loopback5
C 10.10.10.6/32 is directly connected, Loopback6
12.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C 12.12.12.0/24 is directly connected, Serial2/0
L 12.12.12.1/32 is directly connected, Serial2/0
23.0.0.0/24 is subnetted, 1 subnets
D 23.23.23.0 [90/2195456] via 12.12.12.2, 00:02:44, Serial2/0
Pada routing tabel R1 terlihat Default route memiliki flag D* hal ini membukti
kan bahwa default route telah berhasil di konfigurasi di R1, selanjutnya
verifikasi di R2
coba lihat apakah ip loopback 1 ada pada routing tabel R2
R2# sh ip route 10.10.10.1
% Subnet not in table
Ternyata ip loopback 10.10.10.1 tidak terdapat di Routing table R2
coba test ping ke ip loopback R1 10.10.10.1
R2#ping 10.10.10.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.10.10.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 7/9/11 ms
R2#
Dan ternyata R2 dapat terhbung ke IP Loopback R1, hal ini karena di R1
sudah di konfigurasi default route, meskipun ip loopback baru tidak di advertise
ke EIGRP R1, tetap R2 dapat terhbung ke ip loopback R1 tersebut meskpun tidak
terdapat di Routing tabel R2.
sampai sini selesei.
Salam Ngoprek