Archives for posts with tag: sdn

The 1.1(1j) & 11.1(1j) release of ACI introduced support for transit routing. Prior to this, the ACI fabric acted as a ‘stub’ routing domain; that is, it was not previously possible to advertise routing information from one routing domain to another through the fabric. I covered L3 Outsides in part 9 of this series where I discussed how to configure a connection to a single routed domain. In this post, we’ll look at a scenario where the fabric is configured with two L3 Outsides and how to advertise routes from one to another. Here is the setup I’m using:

Transit-Routing

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Everything I’ve shown so far in this blog series has been focused on using the APIC GUI to achieve what we need. This is fine for small environments or for becoming familiar with ACI, but what if you need to configure 100 tenants, each with 50 EPGs, tens of private networks and bridge domains, multiple contracts to allow traffic and a L3 Outside or two thrown in? Configuring all of that through the GUI is clearly going to be massively time consuming and probably quite error prone, so we need to find a better way of doing things. ACI has a wide variety of programmability options that can be used to automate the provisioning of the fabric and its policies.

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