As customers deploy multiple geographically disparate data centers, they're looking for scalable and simplified network solutions to extend virtualization and cluster domains between multiple data centers.

Important OTV Features

Scalability

• Extends Layer 2 LANs over any network that supports IP
• Designed to scale across multiple data centers

Simplicity

• Supports transparent deployment over existing network without redesign
• Requires minimal configuration commands (as few as four)
• Provides single-touch site configuration for adding new data centers

Resiliency

• Preserves existing Layer 3 failure boundaries
• Provides automated multihoming
• Includes built-in loop prevention

Efficiency

• Optimizes available bandwidth, by using equal-cost multipathing and optimal multicast replication