- In this video, I'd like to show you
how to change the terminal emulator
that GNS3 uses.
As of this recording, anyway,
the end of February 2016,
GNS3 defaults using PuTTY as a terminal emulator,
say that five times fast.
And the problem with PuTTY,
at least as of right now,
is that if you have any more than one router
in your typology;
every time you open a terminal to the router,
it opens a new window within your screen.
For example, so right now,
I am default to Putty
and if I double-click a router,
there it is, a PuTTY window was just opened,
if I double-click another router,
a new PuTTY window was just opened.
And so you can see that after a while,
after having five or six or seven of these,
depending on how large your typology is,
it can get kind of unwieldy going back and forth
between these different windows,
making sure they're arranged properly on your screen.
And so, if you're like me,
you'd probably prefer to use
a different terminal emulation program
that actually has the tab capability.
In other words, it means that when
that terminal emulation application opens up,
every new instance that you click on for router,
will open within one window
and they'll be tabbed.
They'll be like right next to each other,
or horizontal, or vertical,
rather than having separate windows
all over your desktop.
So, the question is, how do you change
to using SecureCRT or whatever
other terminal emulator that you wish
that supports that capability,
or maybe you want
other capabilities that just aren't built into PuTTY.
Okay, it was actually pretty simple.
I'll go ahead and close this.
So, what you're gonna want to do is,
up here, in the upper left,
you're gonna want to click where it says Edit,
and then Preferences.
And then here under General Preferences,
you want to click on the tab that says
Console Applications.
Now you can see by default,
it uses PuTTY,
but I don't want that,
in my case, I want to use SecureCRT.
So, I'll click this first Edit button, right here,
and from the drop down window,
I will select,
in my particular case, SecureCRT.
Now you can see there's lots of other ones in here as well
and if a particular application
you're looking for isn't in here,
then you could select Custom.
But I'm just going to do SecureCRT
and now, in my particular case,
because I've already used GNS3 lots of times
before I did this video,
it knew exactly where Secure CRT was located,
and also put in all these arguments here.
So, I want to talk a little bit more about,
what if you don't get that.
What if you choose Secure CRT
and it doesn't know the path?
Or the path it came up with is wrong?
Or the path is right, but it doesn't have
any of these arguments.
Okay, so let's take step number one.
Let's just assume that it's SecureCRT and
the GNS3 was unable to
by default
locate the path
of where SecureCRT is located.
So, in other words, when you did it,
it came up like this.
Just empty,
or maybe you're just doing custom,
either way.
Okay, so I'm going to cancel out of this,
minimize GNS3,
and I'm gonna open up SecureCRT,
just by itself, from my Start and Programs window.
Okay, so it's running right now.
So the next thing I'm going to do is, on my laptop,
I'm gonna go into the Task Manager.
And I'll bring it over here,
so that you can see it.
Alright and from the Task Manager,
I'm going to select on View,
and I'm gonna do Select Columns.
And within all these things here,
now this is showing you, when you open up the Task Manager,
what information about each project or each process,
is it showing you?
Well, I actually want to see the path
to every process,
so I will go down here.
And actually, this is already selected for me.
For you, it might not be,
but you want to make sure
that you select Image Path Name,
and then okay.
So once again, that was under Options,
no, that was under, View, Select Columns.
View, Select Columns,
and then make sure you select Image Path Name.
And so now, within here, not only will you see
all the stuff that's running,
but you'll also see, like it says,
the image path.
So let me go ahead and find,
let's sort this by name,
so it's alphabetical.
Scroll down.
I have SecureCRT running right now
and right here we can see the image path.
So you're gonna want to write that down somewhere,
or you're gonna want to like take a screenshot of that,
but basically, you're gonna want to know
what that image path is.
And so once you find the image path,
you can close SecureCRT.
You don't need it anymore.
Go back to GNS3.
Edit,
Preferences,
Console Application,
Edit,
Secure CRT.
And if yours came up empty like this,
you're gonna want to go ahead and
plug in the path.
You're gonna want to start it with a quotation mark
and then end the path
with a quotation mark.
So just copy and paste it in there.
Now before I leave it,
if I just hit okay at this point,
it still wouldn't work.
It actually would open up the SecureCRT application,
but it would not open up a window to the router
I had clicked on
and that's why we need
these additional arguments right here,
/N, all the way to %p.
Now if you're like me, you wonder,
what does all this stuff do?
So I did a little bit of research and here, you can see.
Go ahead and right now,
if you want, go ahead
and pause the video
and read through each one of these things
and that will give you a better idea
of what all these different arguments do.
But you want to make sure
you have those arguments in there,
after the path name.
So I'm just gonna copy those,
go back here, do a space,
paste them in,
Okay,
then hit Apply.
Make sure that everything looks good up here.
Yeah, it looks good.
It's got everything I typed in.
Apply.
Okay.
And now when I hit R1,
it opens it up within SecureCRT.
And now when I go back and I hit R2,
it opens a second window,
a second tab within SecureCRT
because I used the /T option,
which told SecureCRT
to open this up within tabs.
And so now this can be a lot more useful
when working with multiple routers
at the same time.