Transit Routing Use case – EIGRP with routed interfaces

Beginning with APIC code 1.1, Cisco introduced the ability to allow routes to “Transit” the fabric. Prior to this release, the ACI Fabric was only seen as a collection of “stub” networks, meaning that the ACI Fabric would only advertise Bridge Domain subnets; it would not advertise routes received from an external routing peer to … More Transit Routing Use case – EIGRP with routed interfaces

Network Centric to ACI Centric Migration

The vast majority of ACI customers do not start out with an Application Centric deployment of ACI; mainly because they do not have a clear understanding of their applications and the vast amount of interdependencies. However, with the advent of Tetration and other 3rd party analytics tools, the knowledge about how your applications are connected … More Network Centric to ACI Centric Migration

ACI: Configuring a shared external Layer-3 connection for all Tenants

As with most things with ACI, we have a tremendous amount of flexibility in the configuration options to meet different requirements. In this post, we’ll explore options that allow multiple Tenants to use a common, shared L3Out (routing table) for the entire fabric (as opposed to using a L3OUT per VRF). Assumptions: Only non-overlapping IP … More ACI: Configuring a shared external Layer-3 connection for all Tenants