A network administrator is evaluating protocol mechanics between HSRPv2 and VRRPv3 for deployment across an enterprise distribution block. Which two operational statements regarding virtual IP assignment, multicast transport, and protocol behaviors are accurate? (Select two.)
- VRRP permits the virtual IPv4 address to be identical to the physical IPv4 address assigned to the Master router's interface, whereas HSRP requires the virtual IP address to be unique and distinct from any physical IPv4 address assigned to participating routers.Cevap
- HSRPv2 transmits hello packets using UDP port 1985 to multicast IPv4 address 224.0.0.102, whereas VRRPv3 encapsulation uses IP protocol number 112 destined to multicast IPv4 address 224.0.0.18.Cevap
- CHSRPv2 and VRRPv3 both disable preemption by default, requiring administrators to manually configure preemption on backup devices to ensure failover to higher priority devices.
- DHSRPv2 allows configuring the active router's physical IPv4 address as the HSRP virtual IP address if the active router's priority is set to the maximum value of 255.
Cevap
The two correct statements are: (1) VRRP permits the virtual IPv4 address to match the physical interface IP of the master router while HSRP requires a distinct virtual IP address, and (2) HSRPv2 uses UDP port 1985 with destination multicast 224.0.0.102, whereas VRRPv3 uses IP protocol 112 with destination multicast 224.0.0.18.
VRRP allows IP address ownership (where the virtual IP is identical to the physical IP address of the master interface), while HSRP requires the virtual IP to be a distinct IP address on the subnet. Additionally, HSRPv2 uses UDP port 1985 to multicast 224.0.0.102, whereas VRRPv3 operates over IP protocol 112 to multicast 224.0.0.18.
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Anahtar Kavram
HSRPv2 vs VRRPv3 protocol characteristics, transport mechanisms, preemption defaults, and virtual IP allocation rules