Monthly Archives: May 2014

Differences in how Fibre Channel and Ethernet Measure Speed

*+-Sourced from:

Posted in CCIE Datacenter

Configuring TACACS on WLC

*+-In this post we will see how to configure TACACS on a WLC. (I am using ACS 5.2 as TACACS server & WLC is which is in CCIE v2.0 exam). As you can see TACACS server can be added

Posted in CCIE Wireless

Understanding Wireless QoS – Part 2

*+-This is the continuation from my previous post about Wireless QoS. So far we have looked at packets going from C7921 phone to wired PC-softphone. Few key points are, 1. Configured “mls qos trust dscp” on Fa1/0/13 – AP connected

Posted in CCIE Wireless

Understanding Wireless QoS – Part 1

*+-After reading few online posts about wireless QoS, I felt it is worth to spend some time to understand what’s going on packet level. So this will be the first part of wireless QoS related posts. I have used following

Posted in CCIE Wireless

Fibre Channel and FCoE: Some Basics

*+-There’s been some misconceptions and misinformation lately about FCoE. Like any technology, there are times when it makes sense and times when it doesn’t, but much of the anti-FCoE talk lately has been primarily ignorance and/or wilful misrepresentation. In an

Posted in CCIE Datacenter


*+-In this post we will see how to configure security for basic Autonomous WGB solution. Here is the topology I will use for this post. A Laptop connected to the WGB (1252 AP) ethernet port & it is expected to

Posted in CCIE Wireless

The products used in the Cisco Data Center Architecture

*+-Today’s blog post will be about “the products used in the Cisco Data Center Architecture”. In my previous blog post I explained the Cisco Data Center Architecture and this architecture is build with different components/hardware. Every piece of hardware is

Posted in CCIE Datacenter

Hex to String Conversion

*+-When I play with DHCP option-82 feature in WLC came across an option that I can set “AP-MAC:SSID” as remote id. Rather than rely on the debug output I wonder I could get the hex value of that remote-id. If

Posted in CCIE Wireless

Cisco Identity Services Engine

*+-What is the Cisco Identity Services Engine? Today’s enterprise network is rapidly changing, especially when it comes to employee mobility. Employees are no longer tethered to desktop workstations, but instead access enterprise resources via a variety of devices: tablets, smartphones,

Posted in CCIE Security

Lightweight to Autonomous (vice versa) Conversion…

*+-Before converting LWAP to Autonomous need to understand the type of OS image running on these platforms. I found following blog post is very useful to summarize the type of IOS & understanding its naming convention. Following are the

Posted in CCIE Wireless