Logical systems on Juniper is awesome it allows you to have fun times studying for the Juniper JNCIA JN0-104 without big PC usage

Why use Juniper Logical Systems

As we can see in the image we have nine routers however all these routers are just running on one

juniper vmx image, this is a fantastic piece of software that juniper has implemented into a lot of

their devices which allows you to logically separate the actual device into multiple routers.

Now we’ve seen something similar in our Juniper JNCIA studies with the

routing instances where of course we could have overlapping

IP ranges etc and have separated logical routing tables however with the logical

systems that goes a step further this.

Router CE1 in the image is a complete independent router it has

access to its own routing protocols, its own router id’s and it’s completely own

routing tables.

Again same with p1 in the image again this

is its own complete router, it’s got all the operational

functionality of a normal router but it’s virtualized automatically within

one particular running node the same with our core in the image.

What parts of the Juniper JNCIA JN0-104 can you study with logical systems

Our core again is a virtualized router

Within another router and so with these you can run things like

all your routing protocols, you can run your OSPF and your IS-IS or your RIP

you can also run BGP and your MPLS of course you can do you’re your

tunnelling and all your layer 2 services.

From the video we can see that all of these other logical systems are

running within this one juniper device

Resource benefits of Juniper logical Systems

Now why this is actually quite good is this particular

device the control plane is running four gigs of ram and four cpus

and the forwarding plane is running four gigs of ram and three cpus.

however as we’ve seen in the diagram that i’m using we are running nine instances of this so

this is a total of eight gigs per image and if we times that by nine so eight gigs times nine

nodes that equal 72 gigs under full load of course

now that’s a lot of memory a lot of usage and of course if you’re only

running a device that has let’s say your home pc is limited with

the amount of memory that it can do and you’re limited with your cpus then

trying to run the relatively big topology can be extremely frustrating and

extremely slow and this is the benefit of Logical Systems

Try applying Juniper Logical Systems to your Juniper JNCIA JN0-104 training and see real benefits compared to physical equipment and there is a link to a great Udemy Juniper Course