The answer to your question is no, if you are running OTV in unicast mode IGMP is not involved, instead OTV will use an adjacency server to build up the adjacency between sites.
An adjacency server is responsible for informing all the other existing edge devices if there is any addition or loss of an edge device. Based on the reachability information, an edge device can further communicate directly with another edge device by using the unicast data path.
An adjacency server distributes the unicast replication list (URL) of all edge device addresses to the members of the overlay network. Each edge device then uses this list to encapsulate multicast packets in a unicast IP header destined for the unicast IP address of each remote edge device.
You can find more information about this type of OTV setup in the link below:
About this webinar
Cisco Application Centric Infrastructure (ACI) is designed API first, making it an automator’s, developer’s and programmer’s dream. When every aspect of a product is available via an API, there is no limit to the scale, robustnes...
Community Live - Application Centric Infrastructure: Introduction and Configuration Best Practices
This special event - formerly known as webcast- is open only to Cisco Customers and Partners.
Many pages in the Cisco Community are accessible o...
This year, Cisco is coming back to Pure Accelerate from September 15-18 as a Platinum Sponsor, where we’ll highlight our converged infrastructure joint solution, FlashStack, in booth 204. We are excited to highlight Cisco and Pure Storage's great pa...