A network administrator is designing a high-availability default gateway architecture for VLAN 10 (subnet 10.1.10.0/24) using two Layer 3 distribution switches. Switch-1 is configured with physical interface IP address 10.1.10.2/24 and Switch-2 is configured with physical interface IP address 10.1.10.3/24. The administrator is evaluating protocol characteristics between HSRPv2 and VRRPv3. Which two statements correctly describe operational differences and IP addressing rules between these protocols? (Select two.)
- VRRPv3 allows the virtual IP address to match Switch-1's physical interface IP address (10.1.10.2), automatically designating Switch-1 as the IP address owner with a default priority of 255.Answer
- BHSRPv2 permits configuring the virtual IP address to match Switch-1's physical interface IP address (10.1.10.2) as long as preemption is explicitly enabled on both switches.
- HSRPv2 sends control messages to the IPv4 multicast destination address 224.0.0.102, whereas VRRP (v2/v3) sends advertisement messages to the IPv4 multicast destination address 224.0.0.18.Answer
- DHSRPv2 enables interface preemption by default, whereas VRRPv3 disables preemption by default when custom priority values are configured.
Answer
The two correct statements are: VRRPv3 allows the virtual IP address to match a physical interface IP address (designating that router as the IP address owner with priority 255), and HSRPv2 uses multicast destination 224.0.0.102 while VRRP uses 224.0.0.18.
VRRPv3 supports IP address ownership where the virtual IP address matches a router's physical interface IP address, automatically elevating its priority to 255 (the maximum). In addition, HSRPv2 uses multicast group address 224.0.0.102 for hello packets, while VRRP uses multicast address 224.0.0.18.
Step-by-Step Solution
Key Concept
FHRP protocol differences: VRRP IP address ownership, HSRP virtual IP uniqueness requirements, protocol multicast addresses, and default preemption settings.