PHASE 1 – Moving layer 3 to Nexus

The time has finally come to implement the Nexus switches into our production network! I have mixed emotions of both excitement and nervousness because this is the first time I have ever done a change over of this magnitude.  However what excites me the most is the experience I am going to gain from doing such a large migration. To help the our team stay organized we have broken down the migration into three phases. I will only talk about phase 1 for now.

Phase 1 entails introducing the Nexus into our core network and moving layer 3 routing from our 6509′s to it.  Basically what will happen is we will shutdown all the vlan’s on the 6509′s and bring them up on the Nexus. Besides just moving layer 3 to the Nexus we also plan on moving a single floor switch to a 5548. Reason being is that we want to take this migration as slowly and methodically as possible. Also if the switch move goes smoothly we may even move over a couple more. One other task that we have planned for that night is moving a highly populated blade center to the Nexus. This will help take a load off the 6509′s and also allow us to begin on migrating the rest of our blade centers (if the move is successful of course) .

Oh and best of all? The maintenance window for these changes is 10pm to 7am!!! I have not pulled an all nighter like this in a long time but I am so ready for it. In the next couple days I am going to try and change around my sleeping pattern so that way when it comes Saturday I won’t be a zombie. I’m sure the Redbull and Starbucks will also help :) I will report back on either Monday or Tuesday on how the night went.

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