Before Looking into VRRP, I recommend you to look into Introduction to HSRP
VRRP is one of the FHRP (First Hop Redundancy Protocols) Protocols
This Protocol deals with gateway redundancy.
VRRP is IEEE standard, whereas HSRP is Cisco proprietary.
- The Router with highest Priority becomes the MASTER
- All other Router becomes the BACKUP.
- The virtual MAC address is the reserved 0000.5e00.01xx, with xx representing the hexadecimal group number.
- Hello packets are sent every 1 second, by default, and sent to multicast address 224.0.0.18
- VRRP preempt will be enabled by default
Configuration :
(config)# interface fastEthernet 0/0
(config-if)#ip address 192.168.1.1 255.255.255.0
(config-if)#vrrp 1 priority 150
(config-if)#vrrp 1 ip 192.168.1.254
Difference between HSRP and VRRP:
HSRP | VRRP | |
Protocol | Cisco proprietary | Standard protocol |
Packet Forwarding States | 1 Active, 1 Standby and others are in Listening States | 1 master and Others are in Backup States |
Virtual IP Address | Must have to be different from the Interface IP configured | Can also be the same as Interface IP. |
Multicast IP | 224.0.0.2(Version 1) / 224.0.0.102(Version 2) | 224.0.0.18 |
Timers | Hello timers - 3sec / Hold timer - 10 sec | Hello timers - 1sec / Hold timer - 3 sec |
Mac Address | 0000.0c07.acXX (Version 1) / 0000.0c9f.fxxx (Version 2) | 0000.5e00.01xx |
Tracking | Interface and Object | Object |
You can also look at my video Tutorial:
That's it.
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