Using OpenGear Console server with SSH

There are lots of terminal servers out there.  You can build your own with linux, you can build your own with routers, and you can use console server appliances. I used to build my own.  Either I would have a spare router handy, or I would just use a Linux box with ser2net installed.  However, I have come to truly appreciate and enjoy OpenGear's console servers.   I am using OpenGear's IMX 4200 product line.  Either the 16-, the 32-, or the 48-port, depending on how dense of an environment I'm running.  The beauty of using a console server, is that you can s...
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The HP PS1810 Switch

Here, I am testing the HP PS1810.  It looks like there are 2 types:  The PS1810-8G and the PS1810-24G.  The largest difference is that the 8G switch has 8 ports and 1 PoE port.  The 24G switch has 24 ports with 2 SFP ports.  Also, the 8G switch can be either wall/desk mounted or physically stacked with other MicroServers, but the 24G switch must be mounted, either via rack, wall, or rubber feet.  But both have the same features. The HP PS1810 is a fully managed switch, but getting access is not exactly easy, as they don't provide any console ports.  But,...
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HP Comware – Can’t Backspace in iTerm

Here's an annoying little nugget of knowledge:  If you find yourself telnet'ing into a comware device (in my case, an HP 5820 switch), and you can't backspace a character, don't try to change your terminal emulation.  It's not that.    Technically, you just need to do a "CTRL + H" to do it.  Annoying, right?  Well, here's how you fix it in iTerm.  Create a profile for the Comware switches.  Choose the "Keys" tab, and select "Backspace sends ^H".   Thanks for that HP.  I'm sure there is a really good and justifiable reason for this. &...
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Custom Functions for HP IMC

One of the best features of HP's Intelligent Management Center is not that it's modular and can do so many different things.  It's not that it's scalable, and can handle tens of thousands of managed devices.  It's not even it's alarming and event system.  No, the best feature of HP's IMC, is that you can do things that it wasn't programmed to do. Take this use case for example.  As a network administrator, you are constantly being blamed for poor access into the network.  After drinking 3 cups of coffee and reviewing everything at your desk, you see nothing wrong. ...
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Can’t authenticate Cisco to HP iMC Tacacs

I love TACACS+.  I know there are those of you who prefer RADIUS, but there are a few reasons why I love Tacacs It's tried and true.  Stable It's TCP not UDP (c'mon, you knew I'd use this...) It's easiest to configure Group -> Command mapping So, when HP iMC 5.1 came out with TAM (Tacacs Authentication Module), I just HAD to try it out!  So, I grabbed a lab switch, downloaded the trial version of TAM, and started hacking away.  It wasn't long before I was stuck.  No matter what I did, I just couldn't authenticate to iMC.     I chec...
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Getting user-mode after logging in with aaa user at privilege 15

Had an interesting issue today.  I enabled AAA Authentication on a used Cisco 3560 switch.  I then created a user with privilege 15.  But, every time I used either telnet or SSH, I was always getting User Mode.  I wanted Priveleged Mode. Since the highest level of privilege commands is 15, I should be getting full permissions if my user is ALSO set at privilege 15, right?  Well, it does, but first there was a tiny configuration that needs to happen.  First, let's enable AAA on the device: big-old-switch(config)# aaa new-model Now, let's create a user: big...
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I purchased my first HP Switch!

On Sept 12, I posted a tweet saying that I purchased my first HP Switch.  Obviously, this caused some discussion between the HP lovers, and the Cisco loyalists (okay, that's an exaggeration).  In this post, I hope to communicate to you *why* I chose to purchase 2 HP 5406's, even though I'm working on my CCIE and I have Juniper EX's running around. First, let's talk about the current environment.  I have an office that is running a Cisco 4510E with redundant 220 power supplies and dual sup's.  This switch is acting as both an aggregate switch as well as a collapsed backb...
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Interview of HP’s Saar Gillai on SDN

During HP Discover 2012, I've been asking various HP divisions on the plans HP has for an OpenFlow controller.  The reason?  For the last 18 months, I've noticed that every HP event mentions SDN and OpenFlow.  Why?  Just adding support for a technology is not a big deal.  One, maybe two announcements, and you are done.  Why so much talk about it?  Surely this means that HP has big plans for it. The answer I get back is, "What would you do with one today?".  Well, nothing, TODAY.  The enterprise doesn't really have a need for it yet.  But th...
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Dynagen Install with CentOS

Dynamips is a Cisco IOS emulator.  Dynagen is a way to wire-up your routers to make a fully-capable network.  It's most common use is for lab-work.  You can use it to help with your studies or test out features and configurations before deploying them into your production network.  Many people prefer GNS3 as a graphical front-end to Dynagen.  However, for me, the graphical use just takes up resources for me and is more "eye-candy" than functional.  However, it may be your cup-of-tea. To get the full features of Dynagen, you must install libpcap library (or win...
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Configure Juniper SFlow for HP IMC

I’ve been really interested and excited with what HP has done with the IMC (Intelligent Management Center) over the last couple of years. I’m sure it was a great product before then, but I’ve only been following it for the last 2. This month, HP released IMC version 5.1, which has alot of new features that I wanted to check out, including 802.1x auditing. After I installed the demo version, I decided, to export some Juniper SFlow to the Network Traffic Analyzer (NTA). Not a new feature, but, c’mon, how cool is flow data? First and foremost, gotta get the device added to IMC. Now that the...
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