The Model Context Protocol (MCP) and Agent-to-Agent (A2A) have gained a significant industry attention over the past year. MCP first grabbed the world’s

Cisco's platform provides networking knowledge, offering  guides, tutorials, and case studies on networking technologies, cybersecurity, and collaboration tools. Whether you're a networking novice looking to understand the basics of routing and switching or a seasoned IT professional seeking advanced insights into network architecture and security protocols, Cisco has resources tailored to your needs. Dive into Cisco's extensive library of resources to sharpen your networking skills and stay ahead in the rapidly evolving world of IT infrastructure.

Cisco

MCP and A2A are complementary protocols for agentic AI systems that operate at different layers, similar to Layer-2 and Layer-3 in networking. MCP abstracts APIs into natural language for LLMs to access tools directly but faces scalability limits as tool counts grow. A2A enables agent discovery through high-level capability descriptions (Agent Cards) and works between agents rather than tools. For simple single-agent systems, MCP alone suffices. Multi-agent systems benefit from combining both: A2A for scalable agent-level routing and MCP for precise tool-level execution within each agent.

MCP and A2A: A Network Engineer’s Mental Model for Agentic AI