Switching Lab 25 : VRRP – IP SLA

 LAB 25

Hapus konfigurasi tracking bekas lab sebelumnya dan konfigurasikan IP SLA nya.

R1

R1(config)#no track 1 ip route 8.8.8.8 255.255.255.255 reachability
R1(config)#ip sla 1 
R1(config-ip-sla)#icmp-echo 8.8.8.8 source-interface f0/1 
R1(config-ip-sla-echo)#frequency 10 
R1(config-ip-sla-echo)#timeout 5000 
R1(config-ip-sla-echo)#track 1 ip sla 1 reachability 
R1(config)#ip sla schedule 1 start-time now life forever 
! 
R1(config)#do show run int f0/1 | i decrement 

 vrrp 1 track 1 decrement 20 

R1(config)#do show vrrp brief 
Interface Grp Pri Time Own Pre State Master addr Group addr Fa0/1 

1 110 3570 Y Master 192.168.12.1 192.168.12.254 

 Shutdown interface loopback0 R3 sehingga ip 8.8.8.8 tidak bisa di ping

R3

R3(config)#int lo0 
R3(config-if)#shutdown 

R3(config-if)#exit 

Perhatikan status tracking akan berubah dari up menjadi down yang kemudian menjadi Backup

R1

*Des 10 12:37:17.739: %TRACKING-5-STATE: 1 ip sla 1 reachability Up->Down 
R1(config)# 
*Des 10 12:37:20.871: %VRRP-6-STATECHANGE: Fa0/1 Grp 1 state Master -> Backup 

R1(config)#

Sekarang nilai priority nya menjadi 90 dengan state backup

R1

R1(config)#do show vrrp brief 
Interface Grp Pri Time Own Pre State Master addr Group addr Fa0/1 

1 90 3570 Y Backup 192.168.12.2 192.168.12.254 

Dan R2 akan jadi master

R2

R2(config)#do show vrrp brief 
Interface Grp Pri Time Own Pre State Master addr Group addr Fa0/1 

1 100 3609 YMaster 192.168.12.2 192.168.12.254 

Aktifkan kembali interface loopback0 R3

R3

R3(config)#int lo0
R3(config-if)#no shutdown 

R3(config-if)#exit 

Verifikasi lagi

R1

*Des 10 12:41:02.739: %TRACKING-5-STATE: 1 ip sla 1 reachability Down->Up 
R1(config)# 
*Des 10 12:41:05.931: %VRRP-6-STATECHANGE: Fa0/1 Grp 1 state Backup -> Master 
! 
R1(config)#do show vrrp brief 
Interface Grp Pri Time Own Pre State Master addr Group addr Fa0/1 

1 110 3570 Y Master 192.168.12.1 192.168.12.254