Config Register is 0x4a6f6469

Lab EIGRP - 04 akan mengkonfigurasi autentikasi pada routing EIGRP. Topologi EIGRP - 04 lihat gambar dibawah,

 

Langkah pertama adalah men-set semua router mempunyai waktu yang sama. Gunakan tips dan tricks NTP :

R2#
R2#clock set 23:58:00 march 13 2008
R2#
*Mar 13 23:58:00.000: %SYS-6-CLOCKUPDATE: System clock has been updated from 00:
21:04 UTC Fri Mar 1 2002 to 23:58:00 UTC Thu Mar 13 2008, configured from console by console.
R2#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
R2(config)#ntp master
R2(config)#

R1#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
R1(config)#ntp server 172.1.1.2
R1(config)#

R3#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
R3(config)#ntp server 172.2.2.2
R3(config)#

Setelah semua router dipastikan mempunyai waktu yang synchronize satu dengan yang lainnya, selanjutnya konfigur CLI autentikasi pada routing EIGRP:

R2(config)#key chain auth
R2(config-keychain)#key 1

R2(config-keychain-key)#key-string ccna
R2(config-keychain-key)#accept-lifetime 23:58:00 march 13 2008 01:00:00 march 14 2008
R2(config-keychain-key)#send-lifetime 23:58:00 march 13 2008 01:00:00 march 14 2008
R2(config-keychain-key)#int s1/0
R2(config-if)#ip authentication key-chain eigrp 10 auth
R2(config-if)#
Mar 14 00:05:35.759: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 10: Neighbor 172.1.1.1 (Seri
al1/0) is down: keychain changed
Mar 14 00:05:37.551: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 10: Neighbor 172.1.1.1 (Seri
al1/0) is up: new adjacency
Mar 14 00:06:47.735: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 10: Neighbor 172.1.1.1 (Seri
al1/0) is down: Interface Goodbye received
Mar 14 00:06:52.255: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 10: Neighbor 172.1.1.1 (Seri
al1/0) is up: new adjacency
R2(config-if)#int s1/1
R2(config-if)#ip authentication key-chain eigrp 10 auth
R2(config-if)#
Mar 14 00:07:20.487: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 10: Neighbor 172.2.2.3 (Seri
al1/1) is down: keychain changed
Mar 14 00:07:23.807: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 10: Neighbor 172.2.2.3 (Seri
al1/1) is up: new adjacency
Mar 14 00:07:53.015: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 10: Neighbor 172.2.2.3 (Seri
al1/1) is down: Interface Goodbye received
Mar 14 00:07:57.871: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 10: Neighbor 172.2.2.3 (Seri
al1/1) is up: new adjacency
R2(config-if)#ip authentication mode eigrp 10 md5
R2(config-if)#
Mar 14 00:08:13.447: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 10: Neighbor 172.2.2.3 (Seri
al1/1) is down: authentication mode changed
Mar 14 00:08:30.755: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 10: Neighbor 172.2.2.3 (Seri
al1/1) is down: Interface Goodbye received
Mar 14 00:08:35.619: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 10: Neighbor 172.2.2.3 (Seri
al1/1) is up: new adjacency
R2(config-if)#int s1/0
R2(config-if)#ip authentication mode eigrp 10 md5
R2(config-if)#
Mar 14 00:08:53.835: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 10: Neighbor 172.1.1.1 (Seri
al1/0) is down: authentication mode changed
Mar 14 00:09:25.787: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 10: Neighbor 172.1.1.1 (Seri
al1/0) is down: Interface Goodbye received
Mar 14 00:09:30.543: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 10: Neighbor 172.1.1.1 (Seri
al1/0) is up: new adjacency

R1(config)#key chain auth
R1(config-keychain)#key 1
R1(config-keychain-key)#key-string ccna
R1(config-keychain-key)#accept-lifetime 23:58:00 march 13 2008 01:00:00 march 14 2008
R1(config-keychain-key)#send-lifetime 23:58:00 march 13 2008 01:00:00 march 14 2008
R1(config-keychain-key)#
Mar 14 00:05:35.832: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 10: Neighbor 172.1.1.2 (Seri
al1/0) is down: Interface Goodbye received
Mar 14 00:05:40.152: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 10: Neighbor 172.1.1.2 (Seri
al1/0) is up: new adjacency
R1(config-keychain-key)#int s1/0
R1(config-if)#ip authentication key-chain eigrp 10 auth
R1(config-if)#
Mar 14 00:06:47.680: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 10: Neighbor 172.1.1.2 (Seri
al1/0) is down: keychain changed
Mar 14 00:06:49.524: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 10: Neighbor 172.1.1.2 (Seri
al1/0) is up: new adjacency
Mar 14 00:08:53.901: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 10: Neighbor 172.1.1.2 (Seri
al1/0) is down: Auth failure
R1(config-if)#int s1/0
R1(config-if)#ip authentication mode eigrp 10 md5
R1(config-if)#
Mar 14 00:09:27.333: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 10: Neighbor 172.1.1.2 (Seri
al1/0) is up: new adjacency

R3(config)#key chain auth
R3(config-keychain)#key 1
R3(config-keychain-key)#key-string ccna
R3(config-keychain-key)#$accept-lifetime 23:58:00 march 13 2008 01:00:00 march 14 2008
R3(config-keychain-key)#send-lifetime 23:58:00 march 13 2008 01:00:00 march 14 2008
R3(config-keychain-key)#int s1/1
R3(config-if)#
Mar 14 00:07:20.495: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 10: Neighbor 172.2.2.2 (Seri
al1/1) is down: Interface Goodbye received
Mar 14 00:07:24.979: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 10: Neighbor 172.2.2.2 (Seri
al1/1) is up: new adjacency
R3(config-if)#int s1/1
R3(config-if)#ip authentication key-chain eigrp 10 auth
R3(config-if)#
Mar 14 00:07:52.851: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 10: Neighbor 172.2.2.2 (Seri
al1/1) is down: keychain changed
Mar 14 00:07:52.863: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 10: Neighbor 172.2.2.2 (Seri
al1/1) is up: new adjacency
Mar 14 00:08:13.419: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 10: Neighbor 172.2.2.2 (Seri
al1/1) is down: Auth failure
R3(config-if)#ip authentication mode eigrp 10 md5
R3(config-if)#
Mar 14 00:08:31.779: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 10: Neighbor 172.2.2.2 (Serial1/1) is up: new adjacency

 

Topologi EIGRP - 03 akan membahas tehnik konfigurasi ‘un-equal cost path load balance’. Konfigurasi CLI routing EIGRP bisa dilihat ke EIGRP - 02. Topologi EIGRP -03 pada gambar dibawah,

 

Setelah selesai dikonfigurasi, pada perintah ’sh ip route’ di R2 terlihat bahwa routing menuju subnet 100.1.1.0/24 hanya melalui R3 atau serial1/1:

 

Padahal sebenarnya ada dua jalur untuk routing menuju subnet 100.1.1.0/24 selain R3 yang dipilih diatas, masih ada link melewati R1. Namun link melalui R1 memiliki cost yang lebih besar sehingga tidak menjadi best routes. Hal ini dapat dilihat pada perintah ’sh ip eigrp topology’, bisa dilihat pada capture dibawah,

 

Berikut konfigurasi load balance untuk dua link di atas yang ‘un-equal cost path’:

R2#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
R2(config)#router eigrp 10
R2(config-router)#variance 2
R2(config-router)#^Z
R2#
*Mar  1 00:16:32.471: %SYS-5-CONFIG_I: Configured from console by console
R2#clear ip eigrp neighbors
R2#
*Mar  1 00:16:45.975: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 10: Neighbor 172.1.1.1 (Ser
ial1/0) is down: manually cleared
*Mar  1 00:16:45.983: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 10: Neighbor 172.2.2.3 (Ser
ial1/1) is down: manually cleared
*Mar  1 00:16:47.531: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 10: Neighbor 172.2.2.3 (Ser
ial1/1) is up: new adjacency
*Mar  1 00:16:48.707: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 10: Neighbor 172.1.1.1 (Ser
ial1/0) is up: new adjacency

Dengan konfigurasi diatas maka R2 sekarang sudah mempunyai dua link yang aktif untuk routing menuju subnet 100.1.1.0/24 yaitu melalui R3 dan R1. Berikut capture console R2:

 

Konfigurasi kali ini akan melakukan tehnik men-summarized routing pada routing EIGRP. Summarized routing penting dilakukan, dengan summarized routing maka routing table tetap terjaga ukurannya tidak terlalu besar. Dan berbanding lurus dengan kerja processor yang tidak semakin berat. Pada topologi EIGRP - 02 ini R2 menggunakan 8 loopback interface dengan maksud agar terlihat perbandingan sebelum summarized routing dilakukan dan sesudahnya. Gambar topologi dapat dilihat dibawah,

 

R2#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
R2(config)#router eigrp 10
R2(config-router)#no auto-summary
R2(config-router)#network 172.1.1.0 0.0.0.255
R2(config-router)#network 172.2.2.0 0.0.0.255
R2(config-router)#network 10.0.0.0 0.0.0.255
R2(config-router)#network 10.0.1.0 0.0.0.255
R2(config-router)#network 10.0.2.0 0.0.0.255
R2(config-router)#network 10.0.3.0 0.0.0.255
R2(config-router)#network 10.0.4.0 0.0.0.255
R2(config-router)#network 10.0.5.0 0.0.0.255
R2(config-router)#network 10.0.6.0 0.0.0.255
R2(config-router)#network 10.0.7.0 0.0.0.255
R2(config-router)#
*Mar  1 00:48:39.723: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 10: Neighbor 172.2.2.3 (Ser
ial1/1) is up: new adjacency
*Mar  1 00:49:26.371: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 10: Neighbor 172.1.1.1 (Ser
ial1/0) is up: new adjacency

R3#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
R3(config)#router eigrp 10
R3(config-router)#no auto-summary
R3(config-router)#network 172.2.2.0 0.0.0.255
*Mar  1 00:52:20.563: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 10: Neighbor 172.2.2.2 (Ser
ial1/1) is up: new adjacency
R3(config-router)#network 100.1.1.0 0.0.0.255
R3(config-router)#
*Mar  1 00:53:15.043: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 10: Neighbor 100.1.1.1 (Fas
tEthernet0/0) is up: new adjacency

R1#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
R1(config)#router eigrp 10
R1(config-router)#no auto-summary
R1(config-router)#network 172.1.1.0 0.0.0.255
*Mar  1 00:55:53.183: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 10: Neighbor 172.1.1.2 (Ser
ial1/0) is up: new adjacency
R1(config-router)#network 100.1.1.0 0.0.0.255
R1(config-router)#
*Mar  1 00:56:05.831: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 10: Neighbor 100.1.1.3 (FastEthernet0/0) is up: new adjacency

 

Setelah konfigurasi awal ini dapat dilihat routing table pada R1 dan R3 yang belum melakukan summarisasi:

 

 

Berikut konfigurasi summarized routing di R2 pada kedua interface yang tersambung ke R1 dan R3,

R2(config-router)#exit
R2(config)#int s1/0
R2(config-if)#ip summary-address eigrp 10 10.0.0.0 255.255.248.0
R2(config-if)#
*Mar  1 00:59:01.003: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 10: Neighbor 172.1.1.1 (Serial1/0) is down: summary configured
*Mar  1 00:59:03.203: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 10: Neighbor 172.1.1.1 (Ser
ial1/0) is up: new adjacency
R2(config-if)#int s1/1
R2(config-if)#ip summary-address eigrp 10 10.0.0.0 255.255.248.0
R2(config-if)#
*Mar  1 01:00:09.471: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 10: Neighbor 172.2.2.3 (Ser
ial1/1) is down: summary configured
*Mar  1 01:00:10.139: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 10: Neighbor 172.2.2.3 (Serial1/1) is up: new adjacency

Summarized routing telah berhasil dilakukan. Berikut routing table pada R1 dan R3, dan bandingkan dengan routing table sebelum melakukan summarized routing diatas.

 

 

Topologi BGP -02 sangat similar dengan topologi BGP -01. Namun tujuan yang ingin dicapai pada topologi BGP - 02 adalah mengkonfigurasi Routing BGP dengan menggunakan interface loopback sebagai neighbor. Gambar topologi dapat dilihat di bawah,

 

R1#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
R1(config)#router bgp 100
R1(config-router)#neighbor 2.2.2.2 remote-as 200
R1(config-router)#neighbor 2.2.2.2 ebgp-multihop
R1(config-router)#neighbor 2.2.2.2 update-source loopback 0
R1(config-router)#exit
R1(config)#ip route 2.2.2.2 255.255.255.255 12.1.1.2
R1(config)#
*Mar  1 05:28:47.930: %BGP-5-ADJCHANGE: neighbor 2.2.2.2 Up

R2#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
R2(config)#router bgp 200
R2(config-router)#neighbor 1.1.1.1 remote-as 100
R2(config-router)#neighbor 1.1.1.1 ebgp-multihop
R2(config-router)#neighbor 1.1.1.1 update-source loopback 0
R2(config-router)#neighbor 1.1.1.1 next-hop-self
R2(config-router)#neighbor 1.1.1.1 default-originate
R2(config-router)#neighbor 3.3.3.3 remote-as 200
R2(config-router)#neighbor 3.3.3.3 update-source loopback 0
R2(config-router)#neighbor 3.3.3.3 next-hop-self
R2(config-router)#neighbor 3.3.3.3 default-originate
R2(config-router)#exit
R2(config)#ip route 1.1.1.1 255.255.255.255 12.1.1.1
R2(config)#
*Mar  1 05:27:33.898: %BGP-5-ADJCHANGE: neighbor 1.1.1.1 Up
R2(config)#ip route 3.3.3.3 255.255.255.255 23.1.1.3
R2(config)#
*Mar  1 05:29:14.142: %BGP-5-ADJCHANGE: neighbor 3.3.3.3 Up

R3#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
R3(config)#router bgp 200
R3(config-router)#neighbor 2.2.2.2 remote-as 200
R3(config-router)#neighbor 2.2.2.2 update-source loopback 0
R3(config-router)#exit
R3(config)#ip route 2.2.2.2 255.255.255.255 23.1.1.2
R3(config)#
*Mar  1 05:27:23.622: %BGP-5-ADJCHANGE: neighbor 2.2.2.2 Up

 

Topologi BGP - 01 mengkonfigurasi Routing BGP dengan menggunakan peer interface atau direct interface address sebagai neighbor. Gambar topologi dapat dilihat di bawah,

 
R1#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
R1(config)#router bgp 100
R1(config-router)#neighbor 12.1.1.2 remote-as 200
R1(config-router)#network 1.1.1.1 mask 255.255.255.255
R1(config-router)#
*Mar  1 00:07:51.519: %BGP-5-ADJCHANGE: neighbor 12.1.1.2 Up

R2#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
R2(config)#router bgp 200
R2(config-router)#neighbor 12.1.1.1 remote-as 100
R2(config-router)#
*Mar  1 00:10:48.903: %BGP-5-ADJCHANGE: neighbor 12.1.1.1 Up
R2(config-router)#neighbor 23.1.1.3 remote-as 200
R2(config-router)#neighbor 23.1.1.3 next-hop-self
R2(config-router)#neighbor 23.1.1.3 default-originate
R2(config-router)#network 2.2.2.2 mask 255.255.255.255
R2(config-router)#network 23.1.1.0 mask 255.255.255.0
R2(config-router)#
*Mar  1 00:17:31.939: %BGP-5-ADJCHANGE: neighbor 23.1.1.3 Up

R3#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
R3(config)#router bgp 200
R3(config-router)#neighbor 23.1.1.2 remote-as 200
R3(config-router)#network 3.3.3.3 mask 255.255.255.255
R3(config-router)#
*Mar  1 00:14:21.527: %BGP-5-ADJCHANGE: neighbor 23.1.1.2 Up

 

Materi kali ini akan membahas poin-poin:

• Konfigurasi dasar router
• Konfigurasi dynamic routing EIGRP
• Kustomisasi bandwidth interface serial 1/0 di R1
• Konfigurasi default gateway dengan command ip default-network
• Konfigurasi default gateway dengan command ip route

Dibawah ini adalah topologi yang akan diimplementasikan.

 

Konfigurasi dasar router:

R1:
conf t
hostname R1
int loopback 0
ip address 172.30.0.1 255.255.255.0
no shut
exit
int loopback 1
ip address 172.30.1.1 255.255.255.0
no shut
exit
int s1/0
ip address 10.1.34.1 255.255.255.0
no shut
int s1/1
ip address 10.1.24.1 255.255.255.0
no shut

R2:
conf t
hostname R2
int s1/0
ip address 10.1.34.2 255.255.255.0
no shut
int s1/2
ip address 10.1.2.2 255.255.255.0
no shut

R3:
conf t
hostname R3
int s1/1
ip address 10.1.24.3 255.255.255.0
no shut
int s1/2
ip address 10.1.2.3 255.255.255.0
no shut

 
Konfigurasi dynamic routing EIGRP:

R1:
conf t
router eigrp 1
no auto-summary
network 172.30.0.0 0.0.0.255
network 10.0.0.0

R2:
conf t
router eigrp 1
no auto-summary
network 10.1.34.0 0.0.0.255
network 10.1.2.0 0.0.0.255

R3:
conf t
router eigrp 1
no auto-summary
network 10.1.24.3 0.0.0.0
network 10.1.2.0 0.0.0.255

Routing EIGRP 1 pada ketiga router sudah berjalan. Tes ping dari R1 ke int s1/2 di R2 dan ke int s1/2 di R3 sukses !

 

Pada saat ini R1 akan mempunyai dua jalur terdekat untuk menuju network 10.1.2.0/24 yaitu melalui 10.1.34.2 di Serial1/0 dan melalui 10.1.24.3 di Serial1/1, dapat dilihat pada gambar dibawah.

 

Hal ini disebabkan bandwidth yang dimiliki kedua link sama besar, yaitu 1,544 Mbps. Hal ini bisa dilihat pada command ‘sh int s1/0’ dan ‘sh int s1/1’ di R1. Seperti gambar dibawah.

 

 

Kustomisasi bandwidth pada interface Serial 1/0 di R1:

R1:
conf t
int s1/0
bandwidth 1000

Hasilnya int s1/0 di R1 akan memiliki bandwidth 1,0 Mbps.

 

Sekarang, routing menuju network 10.1.2.0/24 dari R1 akan memilih jalur 10.1.24.3 di Serial1/1 karena bandwidth yang lebih tinggi. Hasilnya dapat dilihat dengan command ‘sh ip route’ di R1.

 

Sesuai dengan topologi network diawal pembahasan, implementasi ini akan me-misalkan ip loopback 0 sebagai default gateway menuju jalur public/ internet cloud.

Konfigurasi default gateway dengan ip default-network:

R1:
conf t
ip default-network 172.30.0.0

Default gateway dapat dilihat dengan command ‘sh ip route’ di masing-masing router.

 

 

 

Konfigurasi default gateway dengan command ‘sh ip route’ (sebelumnya remove dulu ip default-network)

R1:
conf t
no ip default-network 172.30.0.0
ip route 0.0.0.0 0.0.0.0 lo0
router eigrp 1
network 0.0.0.0
 

Jika dilihat dengan ‘sh ip route’ pada tiap router, akan terlihat default gateway menuju 0.0.0.0/0 melalui  interface Loopback 0. Dapat dilihat pada gambar-gambar dibawah.

 

 

 

 

Menyambung materi Frame Relay – 01. Kali ini implementasi Frame Relay menggunakan topologi yang lebih kompleks. Seperti pada gambar topologi fisik di bawah. R2 tetap menjadi frame relay switching atau sisi provider (penyedia layanan frame relay), untuk client site ada R1 [headquarter office] dan tiga branch office yaitu, R3, R4, dan R5.

 

Topologi logikal bisa dilihat pada gambar dibawah.

 

R1 menggunakan sub-interface s1/0.1 yang terkoneksi point-to-point ke R3. Dan sub-interface s1/0.2 yang terkoneksi multipoint ke R4 dan R5. EIGRP digunakan sebagai routing protocol.

Yang perlu dicermati adalah penggunaan multipoint interface/sub-interface. Dengan multipoint maka sub-interface s1/0.2 hanya melihat koneksi ke R4 dan R5 sebagai satu koneksi saja bukan dua. Hal ini menyebabkan informasi routing table dari R4 tidak dapat diterima oleh R5. Karena adanya metode split horizon yang mencegah informasi routing table kembali kepada interface yang sama dari arah dating informasi routing table. Untuk menghindari hal ini, maka command ‘no ip split-horizon eigrp [as number]’ digunakan pada router yang menjadi multipoint interface/sub-interface.

R1:
conf t
int s1/0
encapsulation frame-relay
no frame-relay inverse-arp
no arp frame-relay
frame-relay lmi-type cisco
no shut
int s1/0.1 point-to-point
ip address 10.1.1.1 255.255.255.0
frame-relay interface-dlci 102

R3:
conf t
int s1/1
encapsulation frame-relay
no frame-relay inverse-arp
no arp frame-relay
frame-relay lmi-type ansi
ip address 10.1.1.3 255.255.255.0
frame-relay map ip 10.1.1.1 201 broadcast
no shut

R2 [Frame Relay Switching]:
conf t
frame-relay switching
int s1/0
encapsulation frame-relay
frame-relay intf-type dce
frame-relay lmi-type cisco
frame-relay route 102 int s1/1 201
no shut
int s1/1
encapsulation frame-relay
frame-relay intf-type dce
frame-relay lmi-type ansi
frame-relay route 201 int s1/0 102
no shut

Tes ping dari R1 ke R3 sukses ! Koneksi sudah terbentuk

 

 

Konfigurasi untuk R1, R4, dan R5 dengan multipoint.

R1:
conf t
int s1/0.2 multipoint
ip address 172.16.1.1 255.255.255.0
frame-relay map ip 172.16.1.4 103 broadcast
frame-relay map ip 172.16.1.5 104 broadcast

R4:
conf t
int s1/2
encapsulation frame-relay
no frame-relay inverse arp
no arp frame-relay
frame-relay lmi-type q933a
ip address 172.16.1.4 255.255.255.0
frame-relay map ip 172.16.1.1 301 broadcast
frame-relay map ip 172.16.1.5 301 broadcast
no shut

R5:
conf t
int s1/3
encapsulation frame-relay
no frame-relay inverse arp
no arp frame-relay
frame-relay lmi-type q933a
ip address 172.16.1.5 255.255.255.0
frame-relay map ip 172.16.1.1 401 broadcast\
frame-relay map ip 172.16.1.4 401 broadcast
no shut

R2 [Frame Relay Switching]:
conf t
int s1/0
frame-relay route 103 int s1/2 301
frame-relay route 104 int s1/3 401
no shut
int s1/2
encapsulation frame-relay
no frame-relay inverse arp
no arp frame-relay
frame-relay intf-type dce
frame-relay lmi-type q933a
frame-relay route 301 int s1/0 103
no shut
int s1/3
encapsulation frame-relay
no frame-relay inverse arp
no arp frame-relay
frame-relay intf-type dce
frame-relay lmi-type q933a
frame-relay route 401 int s1/0 104
no shut

Tes ping dari R4 ke R5 sukses !

 

 
Berikutnya implementasi EIGRP pada jaringan frame relay.

R1:
conf t
router eigrp 1
no auto-summary
network 10.1.1.0 0.0.0.255
network 172.16.1.0 0.0.0.255
exit
int s1/0.2
no ip split-horizon eigrp 1

R3:
conf t
router eigrp 1
no auto-summary
network 10.1.1.0 0.0.0.255

R4:
conf t
router eigrp 1
no auto-summary
network 172.16.1.0 0.0.0.255

R5:
conf t
router eigrp 1
no auto-summary
network 172.16.1.0 0.0.0.255

Tes ping dari R3 ke R4 sukses !

 

 

Tes ping dari R4 ke R3 sukses !

 

Tes ping dari R5 ke R3 sukses !

 

 

OSPF stands for Open Shortest Path First.

OSPF is a link state routing protocol. The word ‘Open’ means it is an open source routing protocol, all routers from different brand has ability to operate OSPF.

Shortest Path First means for itself, it always try to find the best path. OSPF determine their best path by calculate the cost from available links with formula: 10^8 / bandwith [bps]. Or the administrator can setup explicitly the cost with this command: router(config-if)# ip ospf cost number. The lowest cost is the best path chosen by OSPF. For example, if there is two links available on router running OSPF, first link’s cost is 1, second link’s cost is 10, then the best path is the first link.

Each router in OSPF area has its own view to all the network topology. They multicast hello packet, known as hello mechanism. With 224.0.0.5 sent by OSPF network to DR (Designated Router) and BDR (Backup Designated Router) and 224.0.0.6 sent by DR and BDR to OSPF network. Resulting fast convergence times for each router in that area.

Click ospf.jpg to see image

scenario:

Router-1:
E0/1 192.168.1.1/24
S0/1 172.16.15.5/30 DCE
Lo1 1.1.1.1/24

Router-2:
S0/1 10.15.21.9/30 DCE
Lo2 2.2.2.2/24

Router-3:
S0/1 100.100.1.9/30 DCE
Lo3 3.3.3.3/24

Router-4:
S0/1 128.128.1.5/30 DCE
Lo4 4.4.4.4/24

Router-5:
Lo5 5.5.5.5/24

Router-1 is connected to access-point 192.168.1.11/24 inside the LAN there is one PC availabe with IP address 192.168.1.12/24.
Setup this topology with OSPF single area! 

 

console:

Router-1:

router> enable

router# conf t

router(config)# hostname Router-1

Router-1(config)# enable password pass

Router-1(config)# service password-encryption

Router-1(config)# enable secret passwd

Router-1(config)# banner motd #

                           —!!! Router-1 Restricted Shell !!!—#

Router-1(config)# line vty 0 4

Router-1(config-line)# password telnet

Router-1(config-line)# login

Router-1(config-line)# exit

Router-1(config)# int e0/1

Router-1(config-if)# ip address 192.168.1.1 255.255.255.0

Router-1(config-if)# no shut

Router-1(config-if)# exit

Router-1(config)# int s0/1

Router-1(config-if)# ip address 172.16.15.5 255.255.255.252

Router-1(config-if)# clock rate 64000

Router-1(config-if)# no shut

Router-1(config-if)# exit

Router-1(config)# int loopback 1

Router-1(config-if)# ip address 1.1.1.1 255.255.255.0

Router-1(config-if)# no shut

Router-1(config-if)# exit

Router-1(config)# router ospf 5

Router-1(config-router)# network 172.16.15.4 0.0.0.3 area 0

Router-1(config-router)# network 192.168.1.0 0.0.0.255 area 0

Router-1(config-router)# network 1.1.1.0 0.0.0.255 area 0

Router-1(config-router)# ^Z

Router-1#

 

Router-2:

router> enable

router# conf t

router(config)# hostname Router-2

Router-2(config)# enable password pass

Router-2(config)# service password-encryption

Router-2(config)# enable secret passwd

Router-2(config)# banner motd #

                           —!!! Router-2 Restricted Shell !!!—#

Router-2(config)# line vty 0 4

Router-2(config-line)# password telnet

Router-2(config-line)# login

Router-2(config-line)# exit

Router-2(config)# int s0/0

Router-2(config-if)# ip address 172.16.15.6 255.255.255.252

Router-2(config-if)# no shut

Router-2(config-if)# exit

Router-2(config)# int s0/1

Router-2(config-if)# ip address 10.15.21.9 255.255.255.252

Router-2(config-if)# clock rate 64000

Router-2(config-if)# no shut

Router-2(config-if)# exit

Router-2(config)#  int loopback 2

Router-2(config-if)# ip address 2.2.2.2 255.255.255.0

Router-2(config-if)# no shut

Router-2(config-if)# exit

Router-2(config)# router ospf 5

Router-2(config-router)# network 172.16.15.4 0.0.0.3 area 0

Router-2(config-router)# network 10.15.21.8 0.0.0.3 area 0

Router-2(config-router)# network 2.2.2.0 0.0.0.255 area 0

Router-2(config-router)# ^Z

Router-2#

 

Router-3:

router> enable

router# conf t

router(config)# hostname Router-3

Router-3(config)# enable password pass

Router-3(config)# service password-encryption

Router-3(config)# enable secret passwd

Router-3(config)# banner motd #

                           —!!! Router-3 Restricted Shell !!!—#

Router-3(config)# line vty 0 4

Router-3(config-line)# password telnet

Router-3(config-line)# login

Router-3(config-line)# exit

Router-3(config)# int s0/0

Router-3(config-if)# ip address 10.15.21.10 255.255.255.252

Router-3(config-if)# no shut

Router-3(config-if)# exit

Router-3(config)# int s0/1

Router-3(config-if)# ip address 100.100.1.9 255.255.255.252

Router-3(config-if)# clock rate 64000

Router-3(config-if)# no shut

Router-3(config-if)# exit

Router-3(config)# int loopback 3

Router-3(config-if)# ip address 3.3.3.3 255.255.255.0

Router-3(config-if)# no shut

Router-3(config-if)# exit

Router-3(config)# router ospf 5

Router-3(config-router)# network 10.15.21.8 0.0.0.3 area 0

Router-3(config-router)# network 100.100.1.8 0.0.0.252 area 0

Router-3(config-router)# network 3.3.3.0 0.0.0.255 area 0

Router-3(config-router)# ^Z

Router-3# 

 

Router-4:

router> enable

router# conf t

router(config)# hostname Router-4

Router-4(config)# enable password pass

Router-4(config)# service password-encryption

Router-4(config)# enable secret passwd

Router-4(config)# banner motd #

                           —!!! Router-4 Restricted Shell !!!—#

Router-4(config)# line vty 0 4

Router-4(config-line)# password telnet

Router-4(config-line)# login

Router-4(config-line)# exit

Router-4(config)# int s0/0

Router-4(config-if)# ip address 100.100.1.10 255.255.255.252

Router-4(config-if)# no shut

Router-4(config-if)# exit

Router-4(config)# int s0/1

Router-4(config-if)# ip address 128.128.1.5 255.255.255.252

Router-4(config-if)# no shut

Router-4(config-if)# exit

Router-4(config)# int loopback 4

Router-4(config-if)# ip address 4.4.4.4 255.255.255.0

Router-4(config-if)# no shut

Router-4(config-if)# exit

Router-4(config)# router ospf 5

Router-4(config-router)# network 100.100.1.8 0.0.0.3 area 0

Router-4(config-router)# network 128.128.1.4 0.0.0.3 area 0

Router-4(config-router)# network 4.4.4.0 0.0.0.255 area 0

Router-4(config-router)# ^Z

Router-4#

 

Router-5:

router> enable

router# conf t

router(config)# hostname Router-5

Router-5(config)# enable password pass

Router-5(config)# service password-encryption

Router-5(config)# enable secret passwd

Router-5(config)# banner motd #

                                  —!!! Router-5 Restricted Shell !!!—#

Router-5(config)# line vty 0 4

Router-5(config-line)# password telnet

Router-5(config-line)# login

Router-5(config-line)# exit

Router-5(config)# int s0/0

Router-5(config-if)# ip address 128.128.1.6 255.255.255.252

Router-5(config-if)# no shut

Router-5(config-if)# exit

Router-5(config)# int loopback 5

Router-5(config-if)# ip loopback 5.5.5.5 255.255.255.0

Router-5(config-if)# no shut

Router-5(config-if)# exit

Router-5(config)# router ospf 5

Router-5(config-router)# network 128.128.1.4 0.0.0.3 area 0

Router-5(config-router)# network 5.5.5.0 0.0.0.255 area 0

Router-5(config-router)# ^Z

Router-5#

Now I will write about basic router configuration (BRC).
BRC is the first thing ‘must-do’ when working with router.
Points of BRC includes:

1. setting up hostname
2. enable password (plain text)
3. service password-encryption (make it encrypted)
4. enable secret (password with MD5, higher priority than enable password)
5. setting up banner
6. setting up telnet
7. turning on all interfaces connected to other router or network devices (very usefull for CDP)

 
console:

router> enable

router# conf t

router(config)# hostname router-1

router-1(config)# enable password pass

router-1(config)# service password-encryption

router-1(config)# enable secret passwd

router-1(config)# banner motd #

                           —!!! Restricted Shell !!!— #

router-1(config)# line vty 0 4

router-1(config-line)# password cisco

router-1(config-line)# login

router-1(config-line)# exit

router-1(config)# int s0/0

router-1(config-if)# no shut

router-1(config-if)# exit

router-1(config)# int s0/1

router-1(config-if)# no shut

router-1(config-if)# exit

router-1(config)# int e0/1

router-1(config-if)# no shut

router-1(config-if)# exit

router-1(config)# int fa0/1

router-1(config-if)# no shut

router-1(config-if)# exit

router-1(config)#