A network engineer is implementing First Hop Redundancy Protocols (FHRP) across an enterprise distribution layer, deploying HSRPv2 on VLAN 10 and VRRPv3 on VLAN 20. Which two statements correctly describe the operational mechanics, protocol addresses, and default behavior differences between HSRPv2 and VRRPv3? (Select two.)
- HSRPv2 sends hello messages to the multicast destination IPv4 address 224.0.0.102, whereas VRRPv3 sends advertisement packets to the multicast address 224.0.0.18 for IPv4 deployments.Answer
- VRRP allows the virtual IP address to match a physical IP address assigned to the Master router's interface, whereas HSRP requires the virtual IP to be unique and different from all physical interface IP addresses in the group.Answer
- CHSRP permits configuring the active router's physical IPv4 address as the virtual IP address, whereas VRRP strictly forbids the virtual IP address from matching any interface's physical IP address.
- DHSRPv2 enables preemption by default to ensure the primary router regains active state automatically, whereas VRRPv3 requires explicit configuration of preemption to allow a higher-priority router to become Master.
Answer
HSRPv2 sends hello packets to multicast address 224.0.0.102 while VRRPv3 uses 224.0.0.18, and VRRP permits configuring a virtual IP that matches a physical interface IP while HSRP requires a unique virtual IP address.
The correct statements correctly identify the protocol multicast addresses (HSRPv2 uses 224.0.0.102, whereas VRRPv3 uses 224.0.0.18) and the virtual IP assignment rules (VRRP allows the virtual IP to match a physical interface IP, whereas HSRP mandates a unique virtual IP address).
Step-by-Step Solution
Key Concept
FHRP Protocol Differences (HSRP vs. VRRP Addressing, Virtual IP Rules, and Preemption Defaults)