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VRRP protocol in Networking, Virtual Router Replication Protocol (VRRP) in networks is defined by a virtual router identifier (VRID) and a set of “IP” addresses, and a VRRP may associate a virtual router with its real address on an interface, where it can also be configured using hardware mappings. Additional and priority virtual routing, which the virtual router can back up, and the mapping between VRID and addresses must be coordinated between all VRRP routers on the LAN.

vrrp protocol in Networking

What is Virtual Router Replication Protocol (VRRP) in Networking

Virtual Router Redundancy Protocol (VRRP) in Networking is an open industry standard protocol specified in IETF RFC 3768, because it is a standard where multiple vendor gateway devices can be configured to be part of the Virtual Router Replication Protocol suite ( VRRP) in networks, where multiple types of devices can be configured to be part of the same Virtual Router Replication Protocol (VRRP) suite in networks, for example, a primary gateway device can be a “UTM” firewall, and a VRRP device can be Backup is a router as long as they both support VRRP.

Knowing that the Virtual Router Redundancy Protocol “VRRP” is the short form of the “Virtual Router Redundancy” protocol, it provides bypass and redundancy for gateway devices based on Layer 3 in the network from routers, firewalls, “UTM” and Layer 3 switches, and when Network Primary Gateway Fail A preconfigured VRRP-enabled VRRP-enabled backup device will quickly take over the network tasks, to resume the network functions it provides The main gateway device was earlier in this way users do not face any interruption in-network services.

  • VRRP is an acronym for Virtual Device Replication Protocol.

Networking Virtual Router Replication Protocol (VRRP) Feature

VRRP provides redundancy failover in the network gateway, there is no single point of failure due to VRRP, the backup device is configured to take over as soon as the primary device fails the failover occurs quickly.

And often in a very few seconds, VRRP is generally used in the primary passive-active configuration and backup, as VRRP is an open standard IETF protocol so, it can be Many vendors have multiple types of devices that are part of the VRRP suite.

Pros of VRRP

1. Repetition

VRRP enables you to configure multiple routers as a default gateway router, reducing the possibility of failure at a single point in the network.

2. Share the download

It enables you to configure VRRP in such a way that traffic to and from LAN clients can be shared across multiple routers, thus sharing the traffic load more equitably among the available routers.

3. Multiple virtual routers

VRRP supports up to 255 virtual router VRRP groups on a physical interface to the router, subject to the platform that supports multiple MAC addresses. Virtual Multi Router Implement redundancy and load sharing in your LAN topology.

4. Multiple IP addresses

A virtual router can manage multiple IP addresses, including secondary IP addresses, so if you have multiple subnets configured on an Ethernet interface, you can configure VRRP on each subnet.

5. Preference

The VRRP redundancy scheme enables you to preempt a fallback virtual router that has taken over a failed master virtual router, using a higher priority backup virtual router until it becomes available.

6. Text authentication

You can ensure that VRRP messages received from VRRP routers that make up a virtual router are authenticated by configuring a simple text password.

7. Advertising protocol

VRRP uses the standard Internet Number Authority (IANA) multicast address ( for VRRP advertisements. This addressing scheme reduces the number of routers that must serve multicast It allows the test equipment to accurately select VRRP packets on a segment, whereby IANA assigns VRRP to IP 112.

Virtual Router Replication Protocol (VRRP) design principle

Virtual Router Redundancy Protocol (VRRP) is designed to remove the single point of failure inherent in a static virtual router environment. VRRP) on a LAN, a Virtual Router Redundancy Protocol (VRRP) router that controls the IP address associated with a virtual router is called a Master and forwards packets sent to the IP addresses.

Knowing that the selection process provides a dynamic failure of the redirect responsibility if the administrator is not available, then any of the “IP” addresses of the virtual router on the “LAN” can be used as the default router for the first hop by the end hosts, where the advantage is Virtual Router Redundancy Protocol (VRRP) in a high-availability virtual route without the need to configure dynamic routing or router discovery protocols on each end host, and in the figure, a set of “VRRP-active-active-active” is configured using two “FortiADC” modules.

In a “VRRP active-active-active” group one of the nodes is specified to be the primary mode of the traffic group, and the rest of the nodes may be members nodes of the traffic group, where the upstream traffic can be balanced between up to eight member nodes, supporting "Active-active-VRRP" groups also failover.

If the primary node fails, the traffic group work on that node will fail in one of the backup nodes, which will send an unwarranted “ARP” to neighboring devices, to redirect the traffic of its “MAC” address to all network interfaces within the traffic group. Only supports configuring Virtual Router Redundancy Protocol (VRRP) between two or more FortiADC units where the configuration of “FortiADC VRRP” includes:

  • Traffic group and its characteristics.
  • The interface, the floating IP virtual server, and the associated traffic group.