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External Routing with ACI

Chapter Description

In this sample chapter from Deploying ACI: The complete guide to planning, configuring, and managing Application Centric Infrastructure, learn how to enable Layer 3 communication and integrate with routing protocols you may already be using in your environment.


The Cisco ACI solution allows you to use standard Layer 3 technologies to connect to external networks. These external networks can be Layer 3 connections to an existing network, WAN routers, firewalls, mainframes, or any other Layer 3 device.

This chapter covered the following topics:

  • L3 physical connectivity considerations

  • Static and supported routing protocols

  • Access control in and out of the fabric through the use of contracts

  • Multitenant routing considerations

  • WAN integration

  • Quality of Service

  • Multicast best-practice recommendations

No matter what you are connecting to, ACI has the ability to provide reliable and high-performance connectivity to meet simple or complex application and data center needs.

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