BELAJAR BGP ( BGP Dual Homing - ISP sama ) ~ Ngoprek

BGP Dual Homing – ISP sama

Assalamualaikum temen – temen.. kembali lagi di blogg saya.. diblog kali ini saya ingin melanjutkan materi BGP sebelumnya yaitu BGP Aggregator dan kali ini kita akan ngebahas yang sudah ada di judul.. yaitu BGP Aggregator

Nah.. karena ini adalah lab baru jadi saya hanya mengkonfigurasi konfigurasi dasarnya lagi :

Singkatnya, lab ini seperti high avaibility yaa, jadi terdapat dua jalur menuju ISP, nah jika salah satu jalurnya mati jalur yang lainnya akan membekup, default nya jika jalur yang mati tadi adalah jalur utama, sedangkan jalur yang hidup adalah jalur cadangan. ketika nyalan kembali jalur utamanya, paket akan tetap lewat ke jalur cadangan... dan jika kita ingin mengembalikannya lagi harus ada konfigurasi tambahan...

👉https://insinyurbocah2109.blogspot.com/2020/11/belajar-bgp-bgp-aggregator.html

(BGP Aggregator) - Lab 11 BGP

👉https://insinyurbocah2109.blogspot.com/2020/10/belajar-bgp-bgp-community-local-as.html

(BGP Community Local AS) - Lab 10 BGP

👉https://insinyurbocah2109.blogspot.com/2020/10/belajar-bgp-bgp-attribute-community-no_23.html

(BGP Attribute Community NO ADVERTISE) - Lab 9 BGP

👉https://insinyurbocah2109.blogspot.com/2020/10/belajar-bgp-bgp-attribute-community-no.html

(BGP Attribute Community NO EXPORT) - Lab 8 BGP

👉https://insinyurbocah2109.blogspot.com/2020/10/belajar-bgp-bgp-attribute-origin.html

( BGP Attribute ( Origin ) - Lab 7 BGP

👉https://insinyurbocah2109.blogspot.com/2020/10/bgp-routerreflector-assalamualaikumteme.html

( BGP Route Reflector ) - Lab 6 BGP

👉https://insinyurbocah2109.blogspot.com/2020/10/belajar-bgp-bgp-authentication.html

( BGP Authentication ) - Lab 5 BGP

👉 https://insinyurbocah2109.blogspot.com/2020/10/belajar-bgp-bgp-next-hop-self.html

( BGP Next Hop Self ) - Lab 4 BGP

👉 https://insinyurbocah2109.blogspot.com/2020/10/belajar-bgp-ebgp-peering.html

( eBGP Peering ) - Lab 3 BGP

👉https://insinyurbocah2109.blogspot.com/2020/10/belajar-bgp-ibgp-peering-loopback.html

( iBGP Peering Loopback ) - Lab 2 BGP

👉https://insinyurbocah2109.blogspot.com/2020/10/belajar-bgp-ibgp-peering-konfigurasi.html

( iBGP Peering Konfigurasi Dasar ) - Lab 1 BGP

*Oke langsung ke konfigurasinya...

TOPOLOGI =

R1-TKJB#conf t

R1-TKJB(config)#int g1/0

R1-TKJB(config-if)#ip add 12.12.12.1 255.255.255.0

R1-TKJB(config-if)#no sh

R1-TKJB(config-if)#exit

R1-TKJB(config)#

R1-TKJB(config)#int g2/0

R1-TKJB(config-if)#ip add 13.13.13.1 255.255.255.0

R1-TKJB(config-if)#no sh

R1-TKJB(config-if)#

R1-TKJB(config-if)#exit

R1-TKJB(config)#

R1-TKJB(config)#int lo 0

R1-TKJB(config-if)#ip add 1.1.1.1 255.255.255.255

R1-TKJB(config-if)#no sh

R1-TKJB(config-if)#exit

R1-TKJB(config)#

R1-TKJB(config)#rou

R1-TKJB(config)#router bgp 1

R1-TKJB(config-router)#neigh 12.12.12.2 remote-as 23

R1-TKJB(config-router)#neigh 13.13.13.3 remote-as 23

R1-TKJB(config-router)#net 1.1.1.1 mask 255.255.255.255

R1-TKJB(config-router)#exit

R1-TKJB(config)#

R2-TKJB#conf t

R2-TKJB(config)#

R2-TKJB(config)#int g2/0

R2-TKJB(config-if)#ip add 12.12.12.2 255.255.255.0

R2-TKJB(config-if)#no sh

R2-TKJB(config-if)#exit

R2-TKJB(config)#

R2-TKJB(config-if)#int f0/0

R2-TKJB(config-if)#ip add 23.23.23.2 255.255.255.0

R2-TKJB(config-if)#no sh

R2-TKJB(config-if)#exit

R2-TKJB(config)#

R2-TKJB(config-if)#int g1/0

R2-TKJB(config-if)#ip add 24.24.24.2 255.255.255.0

R2-TKJB(config-if)#no sh

R2-TKJB(config-if)#

R2-TKJB(config-if)#int lo0

R2-TKJB(config-if)#ip add 2.2.2.2 255.255.255.255

R2-TKJB(config-if)#exit

R2-TKJB(config)#

R2-TKJB(config)#ro

R2-TKJB(config)#router bgp 23

R2-TKJB(config-router)#neigh 12.12.12.1 remote-as 1

R2-TKJB(config-router)#neigh 23.23.23.3 remote-as 23

R2-TKJB(config-router)#neigh 24.24.24.4 remote-as 4

R2-TKJB(config-router)#net 2.2.2.2 mask 255.255.255.255

R2-TKJB(config-router)#neigh 23.23.23.3 next-hop-self

R2-TKJB(config-router)#exit

R2-TKJB(config)#

R3-TKJB#conf t

R3-TKJB(config)#

R3-TKJB(config)#int g1/0

R3-TKJB(config-if)#ip add 13.13.13.3 255.255.255.0

R3-TKJB(config-if)#no sh

R3-TKJB(config-if)#exit

R3-TKJB(config)#

R3-TKJB(config)#int f0/0

R3-TKJB(config-if)#ip add 23.23.23.3 255.255.255.0

R3-TKJB(config-if)#no sh

R3-TKJB(config-if)#exit

R3-TKJB(config)#

R3-TKJB(config)#int g2/0

R3-TKJB(config-if)#ip add 34.34.34.3 255.255.255.0

R3-TKJB(config-if)#no sh

R3-TKJB(config-if)#exit

R3-TKJB(config)#

R3-TKJB(config)#rou

R3-TKJB(config)#router bgp 23

R3-TKJB(config-router)#neigh 13.13.13.1 remote-as 1

R3-TKJB(config-router)#neigh 23.23.23.2 remote-as 23

R3-TKJB(config-router)#neigh 34.34.34.4 remote-as 4

R3-TKJB(config-router)#neigh 23.23.23.2 next-hop-self

R3-TKJB(config-router)#exit

R3-TKJB(config)#

R4-TKJB#conf t

R4-TKJB(config)#

R4-TKJB(config)#int g1/0

R4-TKJB(config-if)#ip add 24.24.24.4 255.255.255.0

R4-TKJB(config-if)#no sh

R4-TKJB(config-if)#exit

R4-TKJB(config)#

R4-TKJB(config)#int g2/0

R4-TKJB(config-if)#ip add 34.34.34.4 255.255.255.0

R4-TKJB(config-if)#no sh

R4-TKJB(config-if)#exit

R4-TKJB(config)#

R4-TKJB(config)#int lo 0

R4-TKJB(config-if)#ip add 4.4.4.4 255.255.255.255

R4-TKJB(config-if)#exit

R4-TKJB(config)#

R4-TKJB(config)#ro

R4-TKJB(config)#router bgp 4

R4-TKJB(config-router)#neigh 24.24.24.2 remote-as 23

R4-TKJB(config-router)#neigh 34.34.34.3 remote-as 23

R4-TKJB(config-router)#net 4.4.4.4 mask 255.255.255.255

R4-TKJB(config-router)#exit

R4-TKJB(config)#

Kita CEK!!!....

R1(config)#do show ip bgp

Network Next Hop Metric LocPrf Weight Path

*> 1.1.1.1/32 0.0.0.0 0 32768 i

* 2.2.2.2/32 13.13.13.3 0 23 i

*> 12.12.12.2 0 0 23 i

* 4.4.4.4/32 13.13.13.3 0 23 4 i

*> 12.12.12.2 0 23 4 i

Kita bisa lihat, walaupun sudah menggunakan 2 link, hasilnya tetap saja hanya1 link yang digunakan. Sekarang kita akan shutdown port int gi/0 dengan IP 12.12.12.1/24 sehingga paket tidak lagi melalui R2....

R1-TKJB(config)#int g1/0

R1-TKJB(config-if)#sh

R1-TKJB(config-if)#exit

R1-TKJB(config)#

Kita CEK di R1 nyaa...

R1-TKJB(config)#do sh ip bgp

Network Next Hop Metric LocPrf Weight Path

*> 1.1.1.1/32 0.0.0.0 0 32768 i

*> 4.4.4.4/32 13.13.13.3 0 23 4 i

R1(config)#do show ip route bgp

4.0.0.0/32 is subnetted, 1 subnets

B 4.4.4.4 [20/0] via 13.13.13.3, 00:05:17

Disini kita bisa liat linknya sudah berpindah melalui R3. Nahh sekarang kita tes kembali dengan cara kita no shutdown port yang menuju R2.

R1-TKJB(config)#int g1/0

R1-TKJB(config-if)#no sh

R1-TKJB(config-if)#exit

R1(config)#

R1-TKJB(config)#do show ip bgp

BGP table version is 5, local router ID is 1.1.1.1

Status codes: s suppressed, d damped, h history, * valid, > best, i - internal,

r RIB-failure, S Stale

Origin codes: i - IGP, e - EGP, ? - incomplete

Network Next Hop Metric LocPrf Weight Path

*> 1.1.1.1/32 0.0.0.0 0 32768 i

* 4.4.4.4/32 12.12.12.2 0 23 4 i

*> 13.13.13.3 0 23 4 i

R1-TKJB(config)#do show ip route bgp

4.0.0.0/32 is subnetted, 1 subnets

B 4.4.4.4 [20/0] via 13.13.13.3, 00:22:15

Kita bisa lihat, ternyata tidak otomatis pindah ke R2 lagi. nahh supaya memastikan link ke R2 menjadi main link, maka kita konfigurasikan attribute weight...

R1-TKJB(config)#route-map WEIGHT

R1-TKJB(config-route-map)#set weight 100

R1-TKJB(config-route-map)#exit

R1-TKJB(config)#

R1-TKJB(config)#ro

R1-TKJB(config)#router bgp 1

R1-TKJB(config-router)#neigh 12.12.12.2 route-map WEIGHT in

R1-TKJB(config-route-map)#exit

R1-TKJB(config)#

R1-TKJB(config)#do clear ip bgp

Test pada R1.....

R1(config)#do show ip bgp

BGP table version is 3, local router ID is 1.1.1.1

Status codes: s suppressed, d damped, h history, * valid, > best, i - internal,

r RIB-failure, S Stale

Origin codes: i - IGP, e - EGP, ? - incomplete

Network Next Hop Metric LocPrf Weight Path

*> 1.1.1.1/32 0.0.0.0 0 32768 i

*> 4.4.4.4/32 12.12.12.2 100 23 4 i

* 13.13.13.3

R1-TKJB(config)#do show ip route bgp

4.0.0.0/32 is subnetted, 1 subnets

B 4.4.4.4 [20/0] via 12.12.12.2, 00:05:10

Bisa kita liat sekarang linknya melalui R2 kembali. Coba kita tes lagi shutdown interface ke R2.

R1-TKJB(config)#int g1/0

R1-TKJB(config-if)#sh

R1-TKJB(config-if)#exit

R1-TKJB(config)#

Hasilnyaaa

R1-TKJB(config)#do sh ip bgp

BGP table version is 3, local router ID is 1.1.1.1

Status codes: s suppressed, d damped, h history, * valid, > best, i - internal,

r RIB-failure, S Stale

Origin codes: i - IGP, e - EGP, ? - incomplete

Network Next Hop Metric LocPrf Weight Path

*> 1.1.1.1/32 0.0.0.0 0 32768 i

*> 4.4.4.4/32 12.12.12.2 0 100 234 i

R1#sh ip route bgp

4.0.0.0/32 is subnetted, 1 subnets

B 4.4.4.4 [20/0] via 12.12.12.2, 00:02:13

Nahhh sekarang jalur kembali menggunakan main linknya kembali yakni melalui R2...

Done!!!😊😊

TERIMAKASIH

WASSALAMUALAIKUM WR. WB

Ngoprek - Ngoprek Dunia Jaringan

Monday, November 2, 2020

BELAJAR BGP ( BGP Dual Homing - ISP sama )

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BELAJAR BGP ( BGP Dual Homing - ISP sama )

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