random thoughts at best
“TACACS+ is an Authentication, Authorization, and Accounting (AAA) protocol originally developed for the U.S. Department of Defense for authentication to network devices such as routers, switches, and firewalls. Unlike RADIUS, it separates the Authentication and Authorization functionalities, which makes it more flexible for administrative access. The current version of the protocol standard was developed by […]
Just recently, there was a pesky failing fan inside of our controllers on a Xiotech Magnitude 3D 4000. A replacement part dispatched and when the controller was taken off line, it was difficult to determine which fan was “Board Fan 1” since there were no markings. In addition, the fan numbering could have started with […]
Upgrading the NX-OS on a Cisco MDS 9148 Fabric Switch is a straight forward task. There are only three commands to upgrade the NX-OS, two copy commands and the install command which does all the work. First you need a TFTP server on the same network as the management interface to transfer the files over […]
Restarting the Management Services for EMC Unisphere is simple and it does not require an outage. The process will require you to log into each Service Processor separately through a web interface. 1. Open up a web browser and goto https://<Service Processor IP/FQDN>/setup 2. Login using the ‘sysadmin’ user account and password. 3. Scroll down to […]
This post will show you how to take an existing BIOS image that is either an Award/Phoenix BIOS, extract the boot image, remove the boot image and how to insert a new boot image into an existing BIOS. Before getting started, download the following: AWBMTools CBROM WARNING: This can damage your motherboard’s BIOS causing the […]
To update the PowerConnect M6220 I was force to connect via a Null Modem Cable to first configure an IP address then followed up the upgrade procedure. I was able to locate a cable off of eBay to connect to the console of the M6220 switch in the M1000e chassis. The cable is a “USB” to […]
It appears there is a lack of information on upgrading the Brocade Fabric Operating System (FOS) on an I/O Module within Dell PowerEdge M1000e Blade Chassis. This guide will show you the step-by-step on how to upgrade your internal Brocade switch in a Dell Blade Chassis and what can be expected. First, you will need to […]
The Lethal Enforcers Konami 054986A is an ‘special’ audio processor on select Konami arcades. Lethal Enforcers made by Konami has this audio processor. When I purchased the arcade the audio was fine but by the time the arcade was transferred to a different location the audio became low, muffled and it clearly sounded like there was an […]
A MAC flap is caused when a switch receives packets from two different physical/logical interfaces with the same source MAC address. The switch then learns where the MAC address is and puts in to a table. This table has the physical/logical interface and the MAC address. When flapping occurs it causes this table to be […]
Here is a list of good commands that I use frequently when working with an EMC SAN, in particular, a Celerra or VNX series. Enjoy! Summary: Gets the disk information, state and other metrics. Note: that 1_1_14 is Bus 1 Enclosure 1 Disk 14. Command: Result: Summary: Get all LUNs that are trespassed (not on […]