Difference between HSRP, VRRP and GLBP Protocols

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Difference between HSRP, VRRP and GLBP Protocols. All these technologies provide first hop redundancy for the hosts.

Below table for HSRP, VRRP and GLBP Comparison.

Redundancy Protocol HSRP VRRP GLBP
Stands for Hot Standby Router Protocol (Year-1994) Virtual Router Redundancy Protocol (Year-1999) Gateway Load Balancing Protocol (Year-2005)
Proprietary CISCO Open Standard CISCO
Uses Provides default gateway redundancy using one active and one standby router. providing the same functionality as HSRP. prevents a single point of failure, like HSRP and VRRP, but also allows load-sharing among a group of redundant routers.
OSI Layer Layer-3 Layer-3 Layer-2
Load Balancing No No Yes
Multicast Ip Address version1- 224.0.0.2

version 2- 1224.0.0.102

224.0.0.18 224.0.0.102
Used Port UDP port no-1985 Protocol no-112 UDP port no-3222
Timers Hello Timers– 3 sec

Hold Timers – 10 sec (Hold=Hello*3)

Advertisement interval– 1 sec

Hold – 3 sec (Hold=Hello*3)

Hello – 3 sec

Hold – 10 sec (Hold=Hello*3)

IP6 Support Yes No Yes
Virtual MAC Address HSRP version 1- 0000. 0c07.acxx

HSRP version 2- 0000. 0C9F.Fxxx

Where x is the HSRP group number in hexadecimal.

For exp-If you are using HSRP group no. 10 then HSRP virtual MAC address will be 0000. 0C07.ac0A

0000.5e00.01xx

Where x is the VRRP group number in hexadecimal

0007.b4xx.xxxx
Where x is the GLBP group number in hexadecimal
Group Number Range- HSRP version 1 (0-255)

Range- HSRP version 2 (0-4095)

Range- (0-255) Range- (0-1023)
Preempt-If active router goes down & up again, preempt should be configured to become an active router again Enable manually By default, preempt is enable Enable manually
Interface Priority & Election Interface Priority Range-1-255, default-100

->Highest interface priority act as a Active router & 2nd Highest act as a Standby router

Interface Priority Range-1-255, default-100

->Highest interface priority act as a Master router & 2nd Highest act as a Backup router

Interface Priority Range-1-255, default-100

->All routers in GLBP are actively forwarding packet.

Interface Tracking- track an interface of the router and if interface goes down or a destination host unreachable then a failover action is triggered. Support interface tracking Does not Support interface tracking Support interface tracking
Virtual IP Virtual IP cannot be same as physical IP. Virtual IP can be same as physical IP Virtual IP can be same as physical IP

 

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