Lab 16. Unequal Load Balancing

Assalamu'alaikum Warohmatullahi Wabarokatuh...
baik sahabat configer kali ini saya akan sedikit sharing mengenai EIGRP - Equal Load Balancing
metode load balancing yang dapat kita gunakan pada ada dua jenis. Yaitu Equal Cost Load Balancing dan UnEqual Load Balancing.Pada lab kali ini kita akan mempelajari Equal Load balancing terlebih dahulu.
Apa itu Equal Cost Load Balancing?
Equal Cost adalah metode Load Balance yang membagi beban sama rata terhadap route yang ada.
untuk skema jaringannya seperti ini

sekarang kita akan mulai konfigurasi mulai dari R1

R1(config)#int lo0
R1(config-if)#ip add 1.1.1.1 255.255.255.255
R1(config-if)#int f0/0
R1(config-if)#no sh 
R1(config-if)#ip add 12.12.12.1 255.255.255.0
R1(config-if)#int f0/1
R1(config-if)#no sh
R1(config-if)#ip add 13.13.13.1 255.255.255.0

R1(config-if)#router eigrp 10
R1(config-router)#net 0.0.0.0
R1(config-router)#no auto-summary

R2

R2(config)#int lo0
R2(config-if)#ip add 2.2.2.2 255.255.255.255
R2(config-if)#int f0/0
R2(config-if)#no sh
R2(config-if)#ip add 12.12.12.2 255.255.255.0
R2(config-if)#int f0/1
R2(config-if)#no sh
R2(config-if)#ip add 24.24.24.2 255.255.255.0

R2(config-if)#router eigrp 10
R2(config-router)#net 0.0.0.0
R2(config-router)#no au

R3

R3(config)#int lo0
R3(config-if)#ip add 3.3.3.3 255.255.255.255
R3(config-if)#int f0/0
R3(config-if)#no sh
R3(config-if)#ip add 24.24.24.3 255.255.255.0
R3(config-if)#int f0/1
R3(config-if)#no sh
R3(config-if)#ip add 34.34.34.3 255.255.255.0

R3(config-if)#router eigrp 10
R3(config-router)#net 0.0.0.0
R3(config-router)#no au

R4

R4(config)#int lo0
R4(config-if)#ip add 4.4.4.4 255.255.255.255
R4(config-if)#int f0/0
R4(config-if)#no sh
R4(config-if)#ip add 13.13.13.4 255.255.255.0
R4(config-if)#int f0/1
R4(config-if)#no sh
R4(config-if)#ip add 34.34.34.4 255.255.255.0

R4(config-if)#router eigrp 10
R4(config-router)#net 0.0.0.0

Untuk menjadikan Unequal kita harus merubah bandwith lebih kecil dari 100000 kbit pada link yang menuju ke R2 misalkan jadi 1000kbit agar tidak equal lagi

R1(config)#int f0/0
R1(config-if)#band 1000
R1(config-if)#do clear ip route *

sekarang kita cek lagi routing table nya dan akan dilihat hanya satu jalur yang dilewari yakni melewati R3

R1(config-if)#do sh ip route
Codes: 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

Gateway of last resort is not set

34.0.0.0/24 is subnetted, 1 subnets
D 34.34.34.0 [90/307200] via 13.13.13.4, 00:04:26, FastEthernet0/1
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 [90/460800] via 13.13.13.4, 00:04:26, FastEthernet0/1
3.0.0.0/32 is subnetted, 1 subnets
D 3.3.3.3 [90/435200] via 13.13.13.4, 00:04:26, FastEthernet0/1
4.0.0.0/32 is subnetted, 1 subnets
D 4.4.4.4 [90/409600] via 13.13.13.4, 00:04:34, FastEthernet0/1
24.0.0.0/24 is subnetted, 1 subnets
D 24.24.24.0 [90/332800] via 13.13.13.4, 00:04:34, FastEthernet0/1
12.0.0.0/24 is subnetted, 1 subnets
C 12.12.12.0 is directly connected, FastEthernet0/0
13.0.0.0/24 is subnetted, 1 subnets
C 13.13.13.0 is directly connected, FastEthernet0/1

berikutnya kita cek terlebih dahulu topology eigrp nya yang masih menyimpan jalur lain yang dirubah bandwithnya menjadi lebih kecil

R1#sh ip eigrp topology 2.2.2.2/32
IP-EIGRP (AS 10): Topology entry for 2.2.2.2/32
  State is Passive, Query origin flag is 1, 1 Successor(s), FD is 460800
  Routing Descriptor Blocks:
  13.13.13.4 (FastEthernet0/1), from 13.13.13.4, Send flag is 0x0
      Composite metric is (460800/435200), Route is Internal
      Vector metric:
        Minimum bandwidth is 10000 Kbit
        Total delay is 8000 microseconds
        Reliability is 255/255
        Load is 1/255
        Minimum MTU is 1500
        Hop count is 3
  12.12.12.2 (FastEthernet0/0), from 12.12.12.2, Send flag is 0x0
      Composite metric is (2713600/128256), Route is Internal
      Vector metric:
        Minimum bandwidth is 1000 Kbit
        Total delay is 6000 microseconds
        Reliability is 255/255
        Load is 1/255
        Minimum MTU is 1500
        Hop count is 1

untuk membuat menjadi Unequal kita harus setting varience yang akan kita masukan, maka 2713600 dibagi 460800 = 5,8 maka nilai varience yang di set adalah 6 (pembulatan harus keatas untuk nilai berapapun)

R1(config)#router eigrp 10
R1(config-router)#variance 6

hasil akhir

R1(config-router)#variance 6
R1(config-router)#do sh ip route
Codes: 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

Gateway of last resort is not set

     34.0.0.0/24 is subnetted, 1 subnets
D       34.34.34.0 [90/307200] via 13.13.13.4, 00:01:27, FastEthernet0/1
     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 [90/460800] via 13.13.13.4, 00:01:28, FastEthernet0/1
                [90/2713600] via 12.12.12.2, 00:01:28, FastEthernet0/0
     3.0.0.0/32 is subnetted, 1 subnets
D       3.3.3.3 [90/435200] via 13.13.13.4, 00:01:28, FastEthernet0/1
     4.0.0.0/32 is subnetted, 1 subnets
D       4.4.4.4 [90/409600] via 13.13.13.4, 00:01:30, FastEthernet0/1
     24.0.0.0/24 is subnetted, 1 subnets
D       24.24.24.0 [90/332800] via 13.13.13.4, 00:01:30, FastEthernet0/1
     12.0.0.0/24 is subnetted, 1 subnets
C       12.12.12.0 is directly connected, FastEthernet0/0
     13.0.0.0/24 is subnetted, 1 subnets
C       13.13.13.0 is directly connected, FastEthernet0/1

R1(config)#do sh ip route 2.2.2.2
Routing entry for 2.2.2.2/32
  Known via "eigrp 10", distance 90, metric 460800, type internal
  Redistributing via eigrp 10
  Last update from 12.12.12.2 on FastEthernet0/0, 00:03:24 ago
  Routing Descriptor Blocks:
  * 13.13.13.4, from 13.13.13.4, 00:03:24 ago, via FastEthernet0/1
      Route metric is 460800, traffic share count is 240
      Total delay is 8000 microseconds, minimum bandwidth is 10000 Kbit
      Reliability 255/255, minimum MTU 1500 bytes
      Loading 1/255, Hops 3
    12.12.12.2, from 12.12.12.2, 00:03:24 ago, via FastEthernet0/0
      Route metric is 2713600, traffic share count is 41
      Total delay is 6000 microseconds, minimum bandwidth is 1000 Kbit
      Reliability 255/255, minimum MTU 1500 bytes
      Loading 1/255, Hops 1

bisa kita lihat diatas 2 jalur digunakan secara bersamaan namun dengan pembagian setiap 6 paket dikirimkan melalui link utama, maka berikutnya 1 paket dikirimkan ke link kedua.Alhamdulillah postingan kali ini telah selesai, jika artikel ini terasa bermanfaat silahkan bisa di share dengan menekan salah satu button dibawah ini.

Wassalamu'alaikum ...

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