After having a recent conversation with Cisco and a financial customer around how L2 multicast works between a UCS 6120 and a FEX, it actually uncovered something interesting with regards to how this multicast flows.
The Nexus 2000 as we all know gets its intelligence from its parent switch, i.e. Nexus 7000 or 5000. The Nexus 2000 for the most part is just a dumb device, otherwise known as a Fabric Extender (FEX). It may be a surprise for some, but even communication between two ports on the same fabric extender goes like this: FEX Source Port – Parent Switch – FEX Destination port. The same holds true for the Cisco UCS Fabric Interconnect (6100 and 6200 series) and the local FEX that resides in a UCS Blade Enclosure.
After having a recent conversation with Cisco and a financial customer around how L2 multicast works between a UCS 6120 and a FEX, it actually uncovered something interesting with regards to how this multicast flows.
1 Comment
|
AuthorJason Edelman, Founder & CTO of Network to Code. Categories
All
Archives
May 2015
|