Scenario: A Citrix Administrator has configured a Citrix ADC active-passive high availability (HA) pair. When the HA pair fails over, customers are unable to access the hosted websites. After some troubleshooting, the administrator found that the upstream router was NOT updating its ARP table.
What can the administrator configure to resolve this issue?
When configuring a Citrix ADC active-passive high availability pair, if the upstream router is not updating its ARP table upon failover, configuring a Virtual MAC address can resolve this issue. The Virtual MAC ensures that the MAC address remains consistent, preventing the need for the router to update its ARP table, thereby avoiding any disruption in service.
A is correct https://docs.citrix.com/en-us/citrix-adc/current-release/system/high-availability-introduction/configuring-virtual-mac-addresses-high-availability.html