Monthly Archives: March 2014

Monitoring Cisco UCS

*+-In my role as Subject Matter Expert for Cisco UCS and integrated Systems, I am often asked by customers for my views on how best to monitor them and the applications that run on them. To which my historical response

Posted in CCIE Datacenter

Creating and Installing Device Certs using Windows CA

*+-Use this method to stop the annoying security alert when logging into HTTPS to manage the WLC’s. Install openssl0_9_8 on a Windows 2000/XP PC Navigate to C:\OpenSSL\bin Need to create the Cert request on behalf of the WLC. This creates

Posted in CCIE Wireless

MCS Data Rates

*+-  Sourced from: http://cciew.blogspot.in/

Posted in CCIE Wireless

Backup & Restore WLC configs

*+-In a Cisco switch or Router (running on IOS) taking a configuration backup & restore is very easy task. you can simply backup your router/switch configuration in to flash disk by “copy run flash” CLI command. Below shows CLI command

Posted in CCIE Wireless

How to Patch ACS ?

*+-I had to patch my ACS 5.2 server couple of times & thought of describing the process here. First of all you need to download the correct patch from Cisco web site. You can find that via  Products->Security->Access Control and

Posted in CCIE Wireless

Understanding UCS VIF Paths

*+-In the UCS world where a virtual NIC on a virtual server is connected to a virtual port on a virtual switch by a virtual cable, it is not surprising that there can be confusion about what path packets are

Posted in CCIE Datacenter

Top 10 Recommendations for VoWLAN

*+-When I am searching for Voice over WiFi materials , I found below material presented by Flavien RICHARD during Ciscolive- Cancun (Nov-2012). You must watch this session (recorded version) & it is freely accessible if you have a account with

Posted in CCIE Wireless

Understanding DHCP

*+-DHCP (Dynamic Host Configuration Protocol) is one of the most common protocols that everyone understand what it does. But very few of them spend time to learn how it work. So in this post we will look at how DHCP

Posted in CCIE Wireless

Multicast Address Allocation

*+-When I did multicast testing on my wireless network last couple of days I noticed few things may worth to note here. First thing is the group addresses used by different services which we may not aware of.  During my

Posted in CCIE Wireless

Understanding DHCP Snooping

*+-As outlined in my previous post (Understanding DHCP)  DHCP discovery & DHCP request packets coming from a client destine to layer 2/3 broadcast. Therefore these packets will reach every host in that subnet. So anyone in that subnet can act as

Posted in CCIE Wireless