An engineer must use OTV for Layer 2 connectivity between data centers to support virtual machine mobility between the customer sites. To support this requirement, the engineer must ensure the existence of the same default gateway on both sites. Additionally, the operations team reports high bandwidth utilization on site A and wants to optimize the outbound traffic flows to use a local DC exit point.
Which feature must be used to meet these requirements?
To meet the requirement of having the same default gateway on both sites and optimizing outbound traffic flows to use a local DC exit point, the engineer must use FHRP filter. FHRP filter allows for the filtering of First Hop Redundancy Protocol messages across the logical overlay, enabling the same default gateway to exist in different locations. This ensures that the outbound traffic flows can be optimized according to the requirement.
https://www.cisco.com/c/dam/en/us/products/collateral/switches/nexus-7000-series-switches/guide_c07-728315.pdf Another capability introduced by OTV is to filter First Hop Redundancy Protocol (FHRP - Hot Standby Router Protocol [HSRP], Virtual Router Redundancy Protocol [VRRP], and so on) messages across the logical overlay. This filtering is required to allow for the existence of the same default gateway in different locations and optimize the outbound traffic flows
I think that based on the requirements, data groups offers the best solution for VM mobility and it optimizes outbound traffic (combined with PBR) by directing it through the local DC exit point.