Ask the Expert: Application Centric Infrastructure with Daniel Pita

[ciscomoderator]

Learn and ask general questions about ACI fabric bringup, basic configuration, technical operation, and some options for integrating ACI with your existing network with Cisco Expert, Daniel Pita.

December 8th through December 19, 2014

Daniel Pita is a Customer Support Engineer in Cisco TAC who has been working with ACI for the past 8 months. Daniel holds a Masters of Science degree in Telecommunications and Network Engineering from Florida International University. Prior to joining Cisco, Daniel was a Project Manager for his alma mater for the Planning and Design Services department where he managed the physical network infrastructure for all the university campuses existing buildings, renovations, and new constructions from ground breaking to occupancy.

Remember to use the rating system to let Daniel know if you have received an adequate response.

This event lasts through December 19, 2014. Visit this forum often to view responses to your questions and the questions of other community members.

[jondeeming]

Daniel,

I'd like to dig into the initial scenario you described - where the management connection between the APIC and vCenter is lost, but both continue to function.

In this case, if ACI is configured to push EPGs 'On Demand' (rather than 'Immediately'), is there a risk that vCenter could VMotion a guest to a host on a different leaf and the fabric won't reconfigure the correct EPG to that leaf (because the APIC can't see the vCenter)?

Thanks,
Jon

[Andrew Horrigan]

Daniel,

This seems to be a common conversation around ACI - how does the fabric handle passing traffic across the fabric, and how is that learning different from traditional FabricPath?  There is plenty of document on covering each of the various features and how they work, but I have yet to see something that ties each and every protocol together to illustrate the path of a packet.

Thanks,

Andrew