Category Archives: CCIE

Cisco Certified Internetwork Expert

Hacking NX-OS Part 1

Posted on July 4, 2016 by brian

Some of you may know me as a sage hacker from the mid 80’s to the early 90’s.  Although, if you met me after 1994, most of you probably don’t know that about me at all.  It was a previous … Continue reading →

Posted in CCIE Routing and Switching, CCIE Storage, Cisco, Network Technology, Nexus, NX-OS | Tagged , | Leave a comment

Cisco MDS and Brocade Interop Issues with Per VC Flow Control

Posted on May 19, 2012 by brian

One issue to be mindful of when configuring Cisco MDS switches with Brocade switches is that Brocades Per VC Flow Control must be disabled.  Cisco MDS 9000 switches do not support Brocades Per VC Flow Control.  The flow control will … Continue reading →

Posted in CCIE, CCIE Storage, Cisco, Interop, MDS | Tagged , , | 3 Comments

Fibre Channel Credits vs. FCoE’s “Pause”

Posted on February 17, 2012 by brian

Anyone who comes from a Fibre Channel background likely has a pretty good understanding of Buffer to Buffer (B2B) Credits.  The Fibre Channel network is designed so that all capacity within the system is carefully distributed and not oversubscribed.  This … Continue reading →

Posted in CCIE Storage | Tagged | Leave a comment

Complete CCIE Storage Lab using VMDirectPath I/O

Posted on January 17, 2012 by brian

Back when I built my storage lab, I had to build separate physical servers (WIN1, WIN2, WIN3 and MGMT) each with their own fibre channel cards and I/O paths.  Today, VMware has VMDirectPath I/O, which allows you to take multiple … Continue reading →

Posted in CCIE, CCIE Storage, Storage | Tagged , , , | 10 Comments

Using NetApp Disk Shelves as a JBOD

Posted on December 12, 2011 by brian

One of the questions I am asked many times is about what type of disk storage (JBOD) can be used for CCIE Storage studies.  There are many that can be used.  I prefer to use something that is public loop … Continue reading →

Posted in CCIE Storage | Tagged , , | Leave a comment