Showing posts from 2013

Cisco ACI - My Take

Recently Cisco introduced Application Centric Infrastructure and the Nexus 9000 family. I have read many terrific posts about ACI and everything ACI brings to the table.

To recap, ACI uses the Application Policy Infrastructure Controller (APIC) to unite physical and virtual networks. APIC is a policy management application, which creates application profiles and their associated physical, virtual, layer 4-layer7 dependencies, and automates their deployment. Think data center automation combined with SDN.

Sounds like a Software Defined Data Center (SDDC) doesn’t it? Well…there is more. Insieme, now part of Cisco, also developed the hardware and ASICs for the Nexus 9000 as the Infrastructure.

To support ACI, the Nexus 9000s are deployed in a leaf and spine architecture and run in ACI mode. Together the Nexus 9000 and APIC provide an integrated hardware, software, custom ASIC, 40Gb, smoking fast, secure, multi-tenant cloud infrastructure.

So with ACI and the Nexus 9000, can better defin…

Cisco Live 2013 and Alligators

Cisco Live and alligators. What could these possibly have in common? What they have in common starts with a tweet from @CommsNinja (aka Amy Lewis, Data Center and Cloud Marketing @Cisco).

“Are you faster than an alligator? Find out 6/26 in Orlando. #CLUS (RT please!)”

I have been to Cisco Live twice and I know things can get crazy. So I was thinking the Cisco Appreciation Event could include alligator races. Instead I found something very serious, important, and very close to my heart.

The 2nd Annual Unofficial CLUS Charity 5K. This year donations are going to the Wounded Warrior Project. The Cisco Live Charity Fun Run donation page for the Wounded Warrior Project is here. I would love to know if I am faster than an alligator, but running a 5K would require a small medical contingent and an oxygen tank.

I am not able to run but I would like to donate. I will donate $1.00 for every one runner faster than an alligator ($300 max).

I challenge other Cisco Live att…

Cisco ASA Static NAT Multiple Global IPs to Single Real IP

I am finally getting comfortable with Cisco ASA Object NAT introduced with software version 8.3. I like that ACLs use the real IP address not the global/translated IP Address.

I am still struggling when in the CLI trying to parse the different elements of the of the object because there are two "object network XYX" references in the configuration, one for the host and one for the NAT mapping.

Now on to the NAT fun....

I had an interesting Static NAT configuration scenario with Cisco ASA software version 9.1(1) recently. A customer has a domain registered and hosts their own public DNS servers. Originally they had two Authoritative Name Servers (NS) with different IP Addresses.

Public IP X.X.X.1
Private IP Z.Z.Z.1

Public IP X.X.X.2
Private IP Z.Z.Z.2

The ASA had the standard object with static nat translations:

object network inside-NS1
 host Z.Z.Z.1
 nat (inside,outside) static X.X.X.1
object network inside-NS2
 host Z.Z.Z.2
 nat (inside,outside) static X.X.X.2


A Network Engineer Jumps into VMware with The Official VCP5 Certification Guide

I have worked in the IT industry for 18 years. All this time I have been focused on the Network and Network Infrastructure. I have worked on everything network, from Token Ring to ATM, Frame Relay to MPLS, 10Mbps Ethernet to Fibre Channel over Ethernet, and even Fibre Channel over Token Ring.

I decided I was ready to officially jump into virtualization. I say officially because 1) I have been "touching" VMware for the last two years and 2) I'm ready to earn VCP5 certification.

To start my journey, I recently attended the vSphere 5.1 Install, Manage, and Configure class (the official class is required for VCP5 certification). The class was great for the lecture, lab, and discussion. I needed more. To prepare for the VCP5 Exam I also need a guide to further solidify my understanding.

I am making my way through The Official VCP5 Certification Guide (VMware Press Certification). This book is great! Each section provides thorough details and explanations.

Given my networking…