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Cisco 4500 with supervisor Engine 8e UID beacon LED

As you may already aware about the fact that Cisco 4500 Switch is the most selling switch of Cisco for enterprise network. Due to its performance and investment protection, many companies are using this switch for their network infrastructure. As this is a modular switch , we can insert different types of Line cards like - PoE , non PoE , SFP 1 G or 10 G etc. This switch has one module which is called Supervisor engine. We can not add more than 2 Supervisor engine in a 4500 switch.

Basically, Supervisor Engine is the main CPU or you can say brain of this switch, In network terminology, we refer it is as the Control plane as well as management plane of the 4500 switch. The Supervisor Engine comes in different model based on its performance and capabilities.

Recently, I got a chance to replace old 4500 switch with the new ones. These new 4500 switches comes with supervisor Engine 8E . This 8E is basically the name given by Cisco to this supervisor. It is the latest supervisor engine for 4500 switch at the time of writing of this post.

So I have completed with brief description of the Cisco 4500 family switches. But here I want to tell you regarding new feature of Cisco 4500 Supervisor engine 8E and that is Beacon or UID Light/LED.  UID is an acronym for  Unique Identification Light. You may heard of this in servers, storage etc. But still I want to tell you some more regarding this LED.

Think of a scenario where your data-center or campus building has around 30-40 Switches ( I never saw these many switches as they are very costly). Your are sitting in India and your second office is in Australia. You have to call one help-desk guy to see what is connected on port 2/34 of one of these switch from the group of  30 - 40 switches. Now he goes to your data center and on phone call you are telling him the location of the switch.

The easiest way to tell him is to see the bright blue light which is glowing on the switch. You can glow this Blue led via command line. The command to glow this Blue light is :

Switch# hw-module beacon on
 *Feb 16 13:12:24.418: %C4K_IOSMODPORTMAN-6-BEACONTURNEDON: Beacon has been turned on

Similarly to turn off this UID Light  following command can be used:

Switch# hw-module beacon off
 *Feb 16 13:12:18.083: %C4K_IOSMODPORTMAN-6-BEACONTURNEDOFF: Beacon has been turned off

This is how it looks :

when beacon /UID led is on :

You are noticing that Bright Blue Light in above picture that is Beacon or UID Light.

I have also uploaded one Video on YouTube regarding Cisco 4500 Supervisor engine 8e :

Thanks guys for sparing your time to read my blog post. Soon I will come up with my next post regarding Cisco 6500 switches. Till then keep networking :)


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