An administrator is configuring first-hop redundancy on router R1 for VLAN 50 using HSRPv2. Interface GigabitEthernet0/0/0 on R1 is assigned the IPv4 address . The administrator enters interface configuration mode and issues the command `standby 50 ip 192.168.50.1` to establish the virtual IP address. Which outcome will result from this configuration attempt?
- The command line interface rejects the command because HSRP forbids assigning a router's physical interface IPv4 address as the virtual IP address.Answer
- BThe router accepts the command and automatically sets its HSRP priority to 255 to act as the IP address owner for the group.
- CThe router accepts the command, but HSRP remains indefinitely in the Listen state due to a virtual MAC address conflict.
- DThe router accepts the command and forwards traffic by selecting the floating static route with the lowest administrative distance.
Answer
The command line interface rejects the command because HSRP forbids assigning a router's physical interface IPv4 address as the virtual IP address.
In Cisco HSRP implementation, the virtual IPv4 address must be an unused IP address on the subnet segment. It cannot match the physical IP address assigned to any interface on any router participating in the HSRP group. Attempting to assign an existing physical IP address causes Cisco IOS to reject the `standby ip` command with a syntax validation error.
Step-by-Step Solution
Key Concept
HSRP Virtual IP Addressing vs VRRP IP Address Ownership
Estimated Time:1m 30s