Category Archives: Data Center

Cisco ACI Tutorial 4 – The Access Policy Chain – a new “interface range” command

The Access Policy Chain – a new “interface range” command Cisco ACI Tutorial – Part 4 Since you no longer have to configure ports on individual switches, but rather configure multiple ports on multiple switches from a central controller, some … Continue reading

Posted in Access Policies, Access Policy Chain, ACI, ACI configuration, ACI Configuration Tutorial Series#1, ACI Tutorial, Cisco, configuration tutorial, Data Center, Data Centre, Nexus, Nexus 9000, SDN, Software Defined Networking, tutorial | Tagged , , , , , , , , , , , , , , , , , , , , , , , , , , , | 5 Comments

New CLI coming for Cisco ACI/APIC

This video on youtube shows off the NX OS style CLI coming for Cisco ACI with version 1.2 code for the APIC and version 11.2 ACI switch code. The slides shown at the beginning of the video mention a release date … Continue reading

Posted in ACI, ACI configuration, Cisco, Data Center, Data Centre, NX OS

Cisco ACI Tutorial 3 – Sing a new song for sorting server groups and policy

Sing a new song for sorting server groups and policy Cisco ACI Tutorial – Part 3 If you have been responsible for defining groups of servers and devices to which policy can be applied, you have probably used structures called Access … Continue reading

Posted in ACI, ACI configuration, ACI Configuration Tutorial Series#1, ACI Tutorial, Cisco, configuration tutorial, Data Center, Data Centre, Nexus, Nexus 9000, SDN, Software Defined Networking, tutorial | Tagged , , , , , , , , , , , , | 3 Comments

Cisco ACI Tutorial 2 – Goodbye to VLANs. Well… not quite

I almost always avoid using the Wizard steps because Wizards are magical creatures that are particularly good at hiding information. Continue reading

Posted in ACI, ACI configuration, ACI Configuration Tutorial Series#1, ACI Tutorial, Cisco, configuration tutorial, Data Center, Data Centre, Nexus, Nexus 9000, SDN, Software Defined Networking, tutorial | Tagged , , , , , , , , , , , , | 2 Comments

Cisco ACI Tutorial – A Configuration Guide

Cisco ACI Tutorial – A Configuration Guide Cisco ACI Tutorial – Part 1 Note: This is the first of a series of four blog posts that I plan to publish over the coming weeks. Make sure you follow my blog … Continue reading

Posted in ACI, ACI configuration, ACI Configuration Tutorial Series#1, ACI Tutorial, Cisco, configuration tutorial, Data Center, Data Centre, Nexus, Nexus 9000, SDN, Software Defined Networking, tutorial | Tagged , , , , , , , , , , , , | 3 Comments

Cisco have a new ACI lab on dcould – here’s how to access it

If you sell/buy/use Cisco products, and you want to practice configuring them, then Cisco’s dcloud is a great resource.  And they have just added another ACI lab: Cisco Application Centric Infrastructure with shared Physical Fabric. If you already know about dcloud, … Continue reading

Posted in Cisco, Cloud, Cloud computing, Data Center, Data Centre | Tagged , , , , , , | 4 Comments

FCoE versus FC Farce

Originally posted on The Data Center Overlords:
Updates 2/6/2014: @JohnKohler noticed that the UCS Manager screenshot used (see below) is from a UCS Emulator, not any system they used for testing. Evaluator Group promises answers to questions that both I…

Posted in Cisco, Data Center, Data Centre, UCS

VIRL and GNS3. One day all routers will be virtual

Preamble If you don’t know what VIRL (Virtual Internet Routing Lab) is, read this. If you don’t know what GNS3 is, read this.  The question is, “What impact will the imminent release of VIRL have on GNS3?” Discussion This is … Continue reading

Posted in Cisco, Cloud, Data Center, Data Centre, dynamips, GNS3, GNS3 WorkBench, Virtual Machine | Tagged , , , , , , , , , , , , ,

Why I wouldn’t bother with Enhanced VPC

This article explains why I think using Cisco’s Enhanced VPC may not be the best design when using dual-attached servers for two prime reasons: It does not add any additional redundancy to the design It does add complexity to the … Continue reading

Posted in Cisco, Data Center, Data Centre, Enhanced VPC, eVPC, Fabric Extender, FEX, Nexus, Nexus 2000, Nexus 5000, opinion, VPC | 5 Comments