A customer has an existing solution, which is shown in Exhibit 1. (The solution actually includes
more access layer switches than shown.) In the existing solution, each access layer switch routes
traffic.
A network architect is proposing the HP Flex Campus solution shown in Exhibit 2. In this proposed
solution, the core Intelligent Resilient Framework (IRF) virtual switch routes traffic but the access
layer switches do not. The customer links that in the existing solution if an access layer uplink fails,
failover occurs in less than a second.
The customer also likes that the existing solution does not require Virtual Router Redundancy
Protocol (VRRP).
What should the architect tell the customer about the benefits of the proposed solution?

A.
Although the solution offers slower failover for the access layer uplinks, it is simpler and
eliminates VRRP.

B.
STP eliminates the loops on the access layer uplinks and handles failover for them, which
speeds convergence.

C.
Failover for an access layer uplink occurs in milliseconds, and router redundancy does not
require VRRP.

D.
IRF handles loop elimination and link failover, which lets VRRP handle router redundancy more
efficiently.

Explanation: