Citrix Gateway 13 Administration — Question 2

Scenario: A Citrix Administrator found that whenever a NetScaler VPX high availability (HA) pair of appliances fails over, the load-balanced websites are NOT accessible. The administrator investigated the issue and found that the router and switches do NOT support gratuitous ARP (GARP). However, the administrator cannot immediately afford to upgrade the network infrastructure.
What can the administrator do immediately to resolve the issue and prevent a future outage?

Answer options

• A. Migrate the VPX pair to different hypervisor hosts.
• B. Replace the NetScaler VPX appliances with NetScaler MPX appliances
• C. Configure a Virtual MAC (VMAC) on the NetScaler.
• D. Utilize IPv6 instead of IPv4.

Correct answer: D

Explanation

The correct answer is D because utilizing IPv6 can help avoid issues with ARP as it does not rely on gratuitous ARP for address resolution. Options A and B do not address the ARP issue and would not resolve the accessibility problem. Option C, while it may provide some benefits, does not resolve the core issue with the lack of GARP support in the network infrastructure.