Lab 34. BGP Attribute Weight

Lab 34. BGP Attribute Weight

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BGP menggunakan policy untuk menentukan jalur yang dituju, weight adalah acuan pertama kali yang dipakai BGP dalam menentukan jalur.

Pada skenario diatas R1 & R4 menggunakan deault route dan lakukan konfig standar BGP serta advertise network R1 dan R4..


R1

interface FastEthernet0/0
ip address 12.12.12.1 255.255.255.0
!
ip route 0.0.0.0 0.0.0.0 12.12.12.2


R2

interface FastEthernet0/0
ip address 12.12.12.2 255.255.255.0
!
interface Serial0/0
ip address 25.25.25.2 255.255.255.0
clock rate 2000000
!
interface FastEthernet0/1
ip address 23.23.23.2 255.255.255.0
!
router bgp 12
network 12.12.12.0 mask 255.255.255.0
neighbor 23.23.23.3 remote-as 34
neighbor 25.25.25.5 remote-as 12


R3

interface FastEthernet0/0
ip address 34.34.34.3 255.255.255.0
!
interface Serial0/0
ip address 36.36.36.3 255.255.255.0
!
interface FastEthernet0/1
ip address 23.23.23.3 255.255.255.0
!
router bgp 34
network 34.34.34.0 mask 255.255.255.0
neighbor 23.23.23.2 remote-as 12
neighbor 36.36.36.6 remote-as 34


R4

interface FastEthernet0/0
ip address 34.34.34.4 255.255.255.0
!
ip route 0.0.0.0 0.0.0.0 34.34.34.3


R5

interface FastEthernet0/0
ip address 56.56.56.5 255.255.255.0
!
interface Serial0/0
ip address 25.25.25.5 255.255.255.0
!
router bgp 12
neighbor 25.25.25.2 remote-as 12
neighbor 56.56.56.6 remote-as 34


R6

interface FastEthernet0/0
ip address 56.56.56.6 255.255.255.0
!
interface Serial0/0
ip address 36.36.36.6 255.255.255.0
!
router bgp 34
neighbor 36.36.36.3 remote-as 34
neighbor 56.56.56.5 remote-as 12

Secara default R2 akan memilih lewat R3 untuk ke R4, disini kita akan mengubah jalurnya agar melalui R5 dengan mengubah weightnya..


R1

route-map WEIGHT permit 100
set weight 100
!
router bgp 12
neighbor 25.25.25.5 route-map WEIGHT in

 Oke lihat jalur sudah berganti sekarang melewati 56.56.56.5 (R5)