What is the multicast destination address of VRRP packets?

What is the multicast destination address of VRRP packets?

• A. 224.0.0.18
• B. 224.0.0.20
• C. 224.1.0.18
• D. 224.1.0.20

Answer: (A)

The multicast destination address for VRRP (Virtual Router Redundancy Protocol) packets is 224.0.0.18. This address is specifically designated for VRRP, allowing routers participating in VRRP to communicate effectively in a local broadcast domain. The choice of this address is important because it ensures that all devices configured to listen for VRRP advertisements will receive the packets, enabling them to coordinate in defining which router will take on the active role in providing gateway services. This plays a crucial role in maintaining network reliability and facilitating failover in case the primary router becomes unavailable. The other addresses listed are not utilized by VRRP. For example, 224.0.0.20 is generally associated with other multicast protocols, while 224.1.0.18 and 224.1.0.20 may not have specific functions related to VRRP, thereby making them unsuitable for this particular application. Thus, 224.0.0.18 is the correct multicast address to be used for VRRP communications.

The multicast destination address for VRRP (Virtual Router Redundancy Protocol) packets is 224.0.0.18. This address is specifically designated for VRRP, allowing routers participating in VRRP to communicate effectively in a local broadcast domain.

The choice of this address is important because it ensures that all devices configured to listen for VRRP advertisements will receive the packets, enabling them to coordinate in defining which router will take on the active role in providing gateway services. This plays a crucial role in maintaining network reliability and facilitating failover in case the primary router becomes unavailable.

The other addresses listed are not utilized by VRRP. For example, 224.0.0.20 is generally associated with other multicast protocols, while 224.1.0.18 and 224.1.0.20 may not have specific functions related to VRRP, thereby making them unsuitable for this particular application. Thus, 224.0.0.18 is the correct multicast address to be used for VRRP communications.