Category Archives: Nexus

Cisco ACI Naming Standards

Have you ever wondered what a L3 Out object is, when there no facility to create an object called L3 Out? I managed to solve this and many other ambiguities by developing and adopting a consistent naming standard. Continue reading

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Posted in Access Policies, ACI, ACI configuration, Cisco, Data Center, Data Centre, Nexus, Nexus 9000, SDN, Software Defined Networking | Tagged , , , , | 1 Comment

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

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 at least eight blog posts that I plan to publish over the coming weeks. Make sure you follow … 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

RIP for PIX

No.  This is not a post about the Routing Information Protocol, but to announce that today is the last day that Cisco will give support for the PIX firewall. The last date to receive service and support for the product. … Continue reading

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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