Monthly Archives: September 2013

Phase 1 COMPLETED!

So after a long and at times stressful night, we finally finished all the tasks we had planned.  The second I stepped into the office at 10pm it was all work up until about 8am. I never experienced time fly by as fast as it did. It is almost surreal to think about.  So here is a breakdown of my night from start to finish.

Upon getting in I immediately had to start some preliminary work on the floor switches. Basically logging into each one and setting them to vtp transparent mode and saving the configs.  One of our older buildings was still using the vtp client/server model so we figured this would probably be the best time to change everything to transparent. After that task was completed I had to run one of our backup internet lines to a 3750 (which hung off the Nexus). At the time the backup line was attached to the 6509 so running the cable to the Nexus cabinet wasn’t much of an issue.  It’s about 12am at this point and this is where the fun begins!

So in Phase 1 we are still leaving the 6509s in our network, the only change we are making is that instead of the 6509s running layer 3 they will be made layer 2, and the layer 3 will go to the Nexus. So in order to introduce the Nexus to the network we needed to connect the Nexus to the 6509s. Basically we did this by creating an 8Gb port channel between the Nexus and the 6509. We also increased the connection between our two 6509s from 2Gb to 4Gb. After that it was smooth sailing. We shutdown vlans on the 6509s one at a time and brought them up on the Nexus.

Now that layer 3 has been moved completely to the Nexus it was time to migrate a blade server and a single floor switch. We have a a stack of 3750s in the Nexus rack that is dedicated for blade center aggregation. The blade center has 2 switch cards on the back of it with 4 ports each. So on the 3750s I created 2 port channels going to each switch module on the blade server. Super smooth and had no issues. Well there was one issue, a port on the switch module had gone into err-disabled. A quick shut no shut quickly fixed the port channel link. Next came the floor switch. The floor switch currently was running at 1Gb and we needed to migrate it to 10Gb. Here I changed the modules on the 3750 floor switch to be 10Gb capable and copied the trunk link configs to the 10Gb interfaces. I then created a port channel from both interfaces. Again no issues :)

So that is basically a breakdown of the entire night. I am going to spare you a lot of the boring details that happened throughout the night. Reason being is that I don’t want to relive them again lol. The next step in our network migration now is finish migrating the rest of our blade centers as well as moving the rest of our floor switches.

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.

CCNP Switch Study Update – 9/19/13

 

Week 10  Video  Lab Completed
Monday Lecture 11-15 X
Tuesday Lecture 16-17 1.5hr X
Wednesday Lecture 18-21 1.5hr X
Thursday Lecture 22-25 1.5hr X
Friday OFF
Saturday OFF
Sunday OFF
Week 11  Video Lab Completed
Monday Lecture 26 X
Tuesday Lecture 27-30 1hr X
Wednesday Lecture 31-33 1hr X
Thursday Lecture 32-33 1.5hr X
Friday Lecture 34-36 X
Saturday OFF
Sunday OFF

CCNP Switch Study Update – 9/9/13

My studying hasn’t been where it should be these past two weeks. Lot’s of things have been coming up with life/work which obviously had to take precedence.  In addition to the below study plan I have also been reading Data Center Virtualization Fundamentals in my free time. It really is an outstanding book that also coincides in some ways with my CCNP Switch studies. I have noticed that the Data Center topics have a good amount of overlap with Switch, which is really nice because I am really really growing a liking towards Data Center tech.

I am going to try and kick some of my studies into high gear considering I am nearing my halfway point. If you didn’t know I typically give myself 20 weeks to pass an exam. :)

Week 8  INE Lab Completed
Monday High Availability

High Availability Part 2
X
Tuesday Layer 2 Security
Layer 2 Voice & Video Support
X
Wednesday OFF
Thursday Wireless X
Friday OFF
Saturday OFF
Sunday OFF
Week 9  Video Training Lab Completed
Monday OFF
Tuesday CEF Optimization
VACLs
X
Wednesday Lecture 2-5 2hr X
Thursday Lecture 6-8 1.5hr X
Friday OFF
Saturday Lecture 9-10
Sunday Lab
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