1
00:00:02,678 --> 00:00:05,595
(electronic music)

2
00:00:08,910 --> 00:00:10,050
- So, welcome back.

3
00:00:10,050 --> 00:00:12,150
In this particular video
we're gonna continue

4
00:00:12,150 --> 00:00:14,720
our investigation into
the GNS3 application

5
00:00:14,720 --> 00:00:16,500
by looking at some of the other toolbars,

6
00:00:16,500 --> 00:00:19,060
and we're gonna continue
building a topology

7
00:00:19,060 --> 00:00:20,930
and getting some of this stuff to work.

8
00:00:20,930 --> 00:00:23,338
So, that being the case,

9
00:00:23,338 --> 00:00:25,921
let's go ahead and get started.

10
00:00:27,766 --> 00:00:30,536
So, I'm starting, once
again, with a clean slate.

11
00:00:30,536 --> 00:00:32,107
And just to make things simple,

12
00:00:32,107 --> 00:00:33,604
we're just gonna start
with creating a topology

13
00:00:33,604 --> 00:00:35,844
with routers, nothing but routers.

14
00:00:35,844 --> 00:00:39,144
So, let's just do a simple
topology of three routers.

15
00:00:39,144 --> 00:00:40,374
Now, remember what I said?

16
00:00:40,374 --> 00:00:41,714
That when I drag and drop something,

17
00:00:41,714 --> 00:00:44,114
if I hold down the Shift button,

18
00:00:44,114 --> 00:00:46,174
I can, actually, do more than one.

19
00:00:46,174 --> 00:00:47,514
So, I'll just do 3 routers.

20
00:00:47,514 --> 00:00:49,824
So, there we go, so,
I got a total of four.

21
00:00:49,824 --> 00:00:53,407
I'll just make a nice
topology out of that.

22
00:00:55,514 --> 00:00:57,254
Okay, so, I got four routers.

23
00:00:57,254 --> 00:01:00,044
Now, first thing to note is
look on the upper-right corner

24
00:01:00,044 --> 00:01:02,064
where it says Topology Summary.

25
00:01:02,064 --> 00:01:03,734
What is this telling us?

26
00:01:03,734 --> 00:01:06,404
Well, every device
listed here is gonna have

27
00:01:06,404 --> 00:01:07,874
one of two different colors.

28
00:01:07,874 --> 00:01:09,594
Actually, it can be one of three.

29
00:01:09,594 --> 00:01:13,474
A red means it's not doing
anything; it's stopped.

30
00:01:13,474 --> 00:01:14,944
It's sort of like you unplugged it,

31
00:01:14,944 --> 00:01:17,484
and it's not powered in at all.

32
00:01:17,484 --> 00:01:19,084
When you turn the router on,

33
00:01:19,084 --> 00:01:22,254
and I'll just go ahead and do that.

34
00:01:22,254 --> 00:01:24,624
And I'll talk more about
turning it on in just a second.

35
00:01:24,624 --> 00:01:27,024
Then notice it turns green.

36
00:01:27,024 --> 00:01:29,794
So, you'll see, most likely, red or green.

37
00:01:29,794 --> 00:01:32,634
Sometimes what you will see is yellow.

38
00:01:32,634 --> 00:01:35,794
Yellow is usually a transitory situation.

39
00:01:35,794 --> 00:01:38,064
So, usually like something's wrong;

40
00:01:38,064 --> 00:01:41,504
it's trying to start,
but there's some problem.

41
00:01:41,504 --> 00:01:43,444
I haven't seen that a whole lot.

42
00:01:43,444 --> 00:01:45,474
And usually when it does turn yellow,

43
00:01:45,474 --> 00:01:48,244
usually if I just wait a few minutes,

44
00:01:48,244 --> 00:01:51,854
it'll sort itself out
and it will turn green.

45
00:01:51,854 --> 00:01:54,784
If it doesn't, if just
stays in the yellow state,

46
00:01:54,784 --> 00:01:57,524
what I would recommend is just
right-click on that router,

47
00:01:57,524 --> 00:01:59,654
that particular router, delete it;

48
00:01:59,654 --> 00:02:02,194
and then try to drag
and drop a new one in.

49
00:02:02,194 --> 00:02:04,934
And, hopefully, that will
rectify the situation.

50
00:02:04,934 --> 00:02:07,164
So, right now it shows
me I've got four devices,

51
00:02:07,164 --> 00:02:09,924
three of which are stopped,
not running at all,

52
00:02:09,924 --> 00:02:11,924
one of which is running.

53
00:02:12,874 --> 00:02:15,074
Now, also, something I want you to note.

54
00:02:15,074 --> 00:02:17,217
As you drag and drop
these routers in there,

55
00:02:17,217 --> 00:02:21,244
notice that by default it
names them R1, R2, R3, R4.

56
00:02:21,244 --> 00:02:22,684
They're just named in the order

57
00:02:22,684 --> 00:02:25,254
in which you dragged them in.

58
00:02:25,254 --> 00:02:27,354
You can change these names if you want to.

59
00:02:27,354 --> 00:02:30,454
Now, changing the name is
just gonna change the name

60
00:02:30,454 --> 00:02:32,724
on the topology diagram.

61
00:02:32,724 --> 00:02:34,041
It's not, actually, gonna change

62
00:02:34,041 --> 00:02:35,564
the hostname of the router.

63
00:02:35,564 --> 00:02:38,794
You would still have to log
into the router to do that.

64
00:02:38,794 --> 00:02:40,664
But I can change the name here.

65
00:02:40,664 --> 00:02:41,834
But I wanna show you something.

66
00:02:41,834 --> 00:02:42,667
Let's compare the difference.

67
00:02:42,667 --> 00:02:43,704
First of all, I'm gonna change the name

68
00:02:43,704 --> 00:02:45,334
of a router that's not running.

69
00:02:45,334 --> 00:02:47,534
So, R2 is currently red.

70
00:02:47,534 --> 00:02:50,244
So, I would right-click on R2,

71
00:02:50,244 --> 00:02:53,844
and the second item
down is Change hostname.

72
00:02:53,844 --> 00:02:55,684
So, I just select that.

73
00:02:55,684 --> 00:02:59,184
And I'll just type in San-Jose and hit OK.

74
00:03:01,484 --> 00:03:03,924
And it changes the name, no problem.

75
00:03:03,924 --> 00:03:06,354
Now, what if I tried doing that to R1

76
00:03:06,354 --> 00:03:08,994
who is currently running?

77
00:03:08,994 --> 00:03:10,394
Change hostname.

78
00:03:10,394 --> 00:03:12,394
How about San-Francisco?

79
00:03:15,794 --> 00:03:18,034
Notice it does not change the name,

80
00:03:18,034 --> 00:03:21,201
and down here in this bottom window...

81
00:03:22,229 --> 00:03:24,814
I'll see if I can display
that for you a little bit.

82
00:03:24,814 --> 00:03:26,014
There you go.

83
00:03:26,014 --> 00:03:28,614
It, actually, says Server error:

84
00:03:28,614 --> 00:03:31,281
unable to rename VM instance R1.

85
00:03:32,244 --> 00:03:35,424
So, the takeaway from this is that

86
00:03:35,424 --> 00:03:37,854
there is no way to change the name

87
00:03:37,854 --> 00:03:39,854
of a router once you've started it.

88
00:03:39,854 --> 00:03:41,064
So, if you wanna change the name,

89
00:03:41,064 --> 00:03:44,594
remember, it's the displayed
name here in the topology,

90
00:03:44,594 --> 00:03:47,194
you have to stop that router

91
00:03:47,194 --> 00:03:50,944
and then change the name
while it is stopped.

92
00:03:55,574 --> 00:03:57,004
And then it will let me change it.

93
00:03:57,004 --> 00:04:00,614
I'm gonna leave the other two as they are.

94
00:04:00,614 --> 00:04:03,684
Okay, and also one other
thing I wanted to mention.

95
00:04:03,684 --> 00:04:05,914
So, that other window I just referred to

96
00:04:05,914 --> 00:04:07,997
down there at the bottom.

97
00:04:08,984 --> 00:04:11,484
Down here, the Console window.

98
00:04:12,924 --> 00:04:14,762
Most likely, you're probably not

99
00:04:14,762 --> 00:04:15,924
gonna need that for anything.

100
00:04:15,924 --> 00:04:17,854
Now, don't let this get you confused.

101
00:04:17,854 --> 00:04:19,364
When it says Console window here,

102
00:04:19,364 --> 00:04:22,164
this does not mean, "Oh,
that must be the window

103
00:04:22,164 --> 00:04:24,594
"I go into to issue my iOS commands

104
00:04:24,594 --> 00:04:27,874
"like hostname, and enable
password, and IP address."

105
00:04:27,874 --> 00:04:30,674
No, that's not what that window is for.

106
00:04:30,674 --> 00:04:33,334
That Console window allows you to provide

107
00:04:33,334 --> 00:04:37,374
command-line commands to
the GNS3 application itself.

108
00:04:37,374 --> 00:04:39,144
It's sort of like a window
where you would type in

109
00:04:39,144 --> 00:04:41,724
DOS commands for your
laptop, or something.

110
00:04:41,724 --> 00:04:43,979
Chances are you probably don't know any

111
00:04:43,979 --> 00:04:45,894
of the GNS3 commands to type in here,

112
00:04:45,894 --> 00:04:47,824
and you probably won't need to.

113
00:04:47,824 --> 00:04:49,284
So, this is usually when you're doing

114
00:04:49,284 --> 00:04:50,864
some sort of troubleshooting,

115
00:04:50,864 --> 00:04:52,234
and trying to figure out on the backend

116
00:04:52,234 --> 00:04:54,134
what's going on with the GNS3 software,

117
00:04:54,134 --> 00:04:55,664
something weird is happening.

118
00:04:55,664 --> 00:04:57,804
So, the only time I can
really see you needing

119
00:04:57,804 --> 00:04:59,274
to go in there and type something

120
00:04:59,274 --> 00:05:01,944
is if you're working with
like a GNS3 developer,

121
00:05:01,944 --> 00:05:03,304
and they, actually, tell you

122
00:05:03,304 --> 00:05:04,544
what commands to type in there,

123
00:05:04,544 --> 00:05:06,939
and they wanna see what output comes out.

124
00:05:06,939 --> 00:05:09,514
But just for a regular GNS3 user

125
00:05:09,514 --> 00:05:10,944
who's trying to work with this,

126
00:05:10,944 --> 00:05:13,984
the Console window, really,
isn't gonna do you much good.

127
00:05:13,984 --> 00:05:15,524
You're not really gonna do anything there.

128
00:05:15,524 --> 00:05:16,684
It's really just gonna be there

129
00:05:16,684 --> 00:05:18,094
to show you if there's errors.

130
00:05:18,094 --> 00:05:19,554
That's really what you'd be looking for

131
00:05:19,554 --> 00:05:21,494
in that particular case.

132
00:05:21,494 --> 00:05:23,964
You're not really gonna
type anything in there.

133
00:05:23,964 --> 00:05:25,924
Okay, so, another thing I wanna show you,

134
00:05:25,924 --> 00:05:27,534
in this particular case.

135
00:05:27,534 --> 00:05:31,701
So, so far, we've looked at the
devices toolbar on the left.

136
00:05:33,934 --> 00:05:36,918
We've looked at the main
workspace in the center.

137
00:05:36,918 --> 00:05:39,474
We've talked about the
Topology Summary in the right,

138
00:05:39,474 --> 00:05:40,744
which is really just used to show you

139
00:05:40,744 --> 00:05:42,284
what devices are currently on

140
00:05:42,284 --> 00:05:44,214
and what devices are off.

141
00:05:44,214 --> 00:05:45,817
We've looked at the Console window,

142
00:05:45,817 --> 00:05:48,524
which we don't really need to
pay that much attention to.

143
00:05:48,524 --> 00:05:50,984
And the last thing I
wanna show you right here

144
00:05:50,984 --> 00:05:53,124
is this window right here.

145
00:05:53,124 --> 00:05:56,194
The Servers Summary window.

146
00:05:56,194 --> 00:05:58,394
What this is used for is to tell you

147
00:05:58,394 --> 00:06:00,934
how much of your current CPU and memory

148
00:06:00,934 --> 00:06:03,101
is being consumed by GNS3.

149
00:06:04,404 --> 00:06:07,134
Now, right now you can
see not a whole lot.

150
00:06:07,134 --> 00:06:09,374
My CPU is not being used by this

151
00:06:09,374 --> 00:06:11,314
because, really, nothing's running.

152
00:06:11,314 --> 00:06:13,974
I think all of my routers
right now are turned off,

153
00:06:13,974 --> 00:06:18,141
so there's, really, almost no
CPU usage being used by this.

154
00:06:18,984 --> 00:06:20,914
Now, RAM 54.9%.

155
00:06:20,914 --> 00:06:22,784
You might be thinkin', "Wait a second!

156
00:06:22,784 --> 00:06:25,854
"Why is half of my RAM already being used

157
00:06:25,854 --> 00:06:28,394
"when nothing's been turned on, yet?"

158
00:06:28,394 --> 00:06:30,994
This is, actually, showing you
sort of all the RAM you have.

159
00:06:30,994 --> 00:06:32,934
Not only the RAM that's
being used by GNS3,

160
00:06:32,934 --> 00:06:36,434
but any other open windows you
have, or anything like that.

161
00:06:36,434 --> 00:06:39,304
Which leads me to a very good point.

162
00:06:39,304 --> 00:06:42,174
Ideally, when you're using GNS3,

163
00:06:42,174 --> 00:06:44,204
in an ideal world, you're gonna close down

164
00:06:44,204 --> 00:06:46,574
all the other applications on your laptop.

165
00:06:46,574 --> 00:06:48,634
Because, remember,
everything you have open,

166
00:06:48,634 --> 00:06:50,944
every tab you have open in your browser,

167
00:06:50,944 --> 00:06:54,454
your email program, your
instant-messaging program;

168
00:06:54,454 --> 00:06:56,584
they're all consuming memory,

169
00:06:56,584 --> 00:06:59,972
vital memory that you're
gonna need for these routers.

170
00:06:59,972 --> 00:07:01,364
Because, remember, each
one of these routers

171
00:07:01,364 --> 00:07:03,222
when you open it up is
gonna take somewhere

172
00:07:03,222 --> 00:07:06,994
between, like, 128
megabytes, if you're lucky,

173
00:07:06,994 --> 00:07:09,304
all the way up to 512 megabytes

174
00:07:09,304 --> 00:07:11,804
for some of the 7200 Series images.

175
00:07:11,804 --> 00:07:14,704
So, that's gonna eat up your
RAM really, really quickly.

176
00:07:14,704 --> 00:07:16,274
So, right now this is showing,

177
00:07:16,274 --> 00:07:19,219
you know, I've got, like,
four different windows open

178
00:07:19,219 --> 00:07:21,144
of Google Chrome right now.

179
00:07:21,144 --> 00:07:23,384
I've, also, got email open, Outlook.

180
00:07:23,384 --> 00:07:25,004
I've, also, got a chat program open.

181
00:07:25,004 --> 00:07:28,584
So, right now, without
GNS3 really doing anything,

182
00:07:28,584 --> 00:07:32,724
already 54.9% of my
memory is already used.

183
00:07:32,724 --> 00:07:34,354
And once I start up these routers,

184
00:07:34,354 --> 00:07:38,154
let's see how that's
going to affect things.

185
00:07:38,154 --> 00:07:40,594
Which brings me to my next point.

186
00:07:40,594 --> 00:07:42,634
How do I start up a router?

187
00:07:42,634 --> 00:07:45,374
Well, there's two ways you can do it.

188
00:07:45,374 --> 00:07:49,541
One way is just take a
router and right-click on it.

189
00:07:50,404 --> 00:07:52,234
And you'll see here
that if you scroll down

190
00:07:52,234 --> 00:07:55,634
about, oh I don't know,
10 or 11 icons down,

191
00:07:55,634 --> 00:07:57,474
is the Start button.

192
00:07:57,474 --> 00:07:59,724
You can just click on that.

193
00:08:00,754 --> 00:08:02,224
And then if it successfully starts,

194
00:08:02,224 --> 00:08:05,114
it'll turn green over here.

195
00:08:05,114 --> 00:08:06,224
The other way you can do it

196
00:08:06,224 --> 00:08:09,891
is up in the top here,
in the GNS toolbar...

197
00:08:11,124 --> 00:08:13,234
If you take a look at this if I zoom in.

198
00:08:13,234 --> 00:08:16,401
This says Start or Resume all devices.

199
00:08:17,864 --> 00:08:21,894
So, if you press that, and
I'll go ahead and do that,

200
00:08:21,894 --> 00:08:24,674
all of your routers, actually,
everything that's in there

201
00:08:24,674 --> 00:08:25,757
will turn on.

202
00:08:28,534 --> 00:08:30,229
Now, by doing that, how did that affect

203
00:08:30,229 --> 00:08:32,229
my CPU and my RAM usage?

204
00:08:35,284 --> 00:08:36,924
Let's see if I can get over there.

205
00:08:36,924 --> 00:08:39,144
Come on, I'm using two screens,

206
00:08:39,144 --> 00:08:41,594
so it's being difficult.

207
00:08:41,594 --> 00:08:43,677
All right, let's do this.

208
00:08:44,524 --> 00:08:45,454
I don't know if you can see it or not,

209
00:08:45,454 --> 00:08:47,164
but right now it says my Local CPU,

210
00:08:47,164 --> 00:08:48,364
it's, actually, pretty good.

211
00:08:48,364 --> 00:08:52,574
It's fluctuating between 2.5 and 4%.

212
00:08:52,574 --> 00:08:54,474
My RAM has gone up a little bit.

213
00:08:54,474 --> 00:08:58,414
Previously, it was like
59% of my RAM was used;

214
00:08:58,414 --> 00:09:01,497
and now 65.3% of my RAM is used.

215
00:09:04,546 --> 00:09:07,114
In case you're wondering, this
particular laptop I'm using

216
00:09:07,114 --> 00:09:10,394
has a total of eight gigs of RAM.

217
00:09:10,394 --> 00:09:12,794
So, between everything
I have open right now,

218
00:09:12,794 --> 00:09:15,364
65.3% is in use.

219
00:09:15,364 --> 00:09:17,124
Let me just go ahead and shut down

220
00:09:17,124 --> 00:09:20,364
some of my other applications
that I don't need right now,

221
00:09:20,364 --> 00:09:23,204
and see how that affects my RAM usage.

222
00:09:23,204 --> 00:09:25,734
So, I just shut down my
instant-messaging program.

223
00:09:25,734 --> 00:09:28,974
That just shaved off two
percentage points of RAM.

224
00:09:28,974 --> 00:09:32,774
Now I'm gonna shut down everything
I have for Google Chrome.

225
00:09:32,774 --> 00:09:34,524
So, that's shut down.

226
00:09:35,869 --> 00:09:38,354
So, that knocked off quite a bit.

227
00:09:38,354 --> 00:09:41,484
Almost 10 percentage
points of RAM, right there.

228
00:09:41,484 --> 00:09:45,651
And as far as network devices,
that's pretty much it.

229
00:09:47,416 --> 00:09:48,924
I've, also, got PowerPoint open,

230
00:09:48,924 --> 00:09:50,294
which, actually, consumes a lot of RAM;

231
00:09:50,294 --> 00:09:53,894
so, let me go ahead and disable that.

232
00:09:53,894 --> 00:09:56,034
So, now PowerPoint is closing.

233
00:09:56,034 --> 00:10:00,201
So, it's from 52.9, or 53,
we now go down to what?

234
00:10:04,004 --> 00:10:05,874
All right, so, that saved a little bit,

235
00:10:05,874 --> 00:10:07,144
not as much as I expected.

236
00:10:07,144 --> 00:10:09,514
So, it's now down to 52%.

237
00:10:09,514 --> 00:10:11,897
And I've, also, got a
Microsoft Word document

238
00:10:11,897 --> 00:10:12,730
that's open right now.

239
00:10:12,730 --> 00:10:15,922
I'll go ahead and shut that down.

240
00:10:15,922 --> 00:10:19,724
All right, and I've got
Microsoft Outlook up, as well;

241
00:10:19,724 --> 00:10:21,054
let's shut that down.

242
00:10:21,054 --> 00:10:24,964
So, at this point, the only
thing I have open and running

243
00:10:24,964 --> 00:10:28,064
is GNS3 itself with four routers

244
00:10:28,064 --> 00:10:30,064
that are currently up and active.

245
00:10:30,064 --> 00:10:32,504
And you can see, hopefully you can see.

246
00:10:32,504 --> 00:10:35,544
Let me see if I can zoom
in on this a little bit.

247
00:10:35,544 --> 00:10:37,752
You can see currently
with four routers running,

248
00:10:37,752 --> 00:10:39,204
and no other applications,

249
00:10:39,204 --> 00:10:42,884
it's using slightly over 1% of my CPU,

250
00:10:42,884 --> 00:10:45,301
and about 47% of my RAM.

251
00:10:46,954 --> 00:10:47,954
Not too bad.

252
00:10:50,476 --> 00:10:54,957
So, as far as this button
up here play, or Start all,

253
00:10:54,957 --> 00:10:58,884
if you've got like I've got
here three or four routers,

254
00:10:58,884 --> 00:11:00,964
not a big deal to start 'em all.

255
00:11:00,964 --> 00:11:02,604
But if you've got larger topologies

256
00:11:02,604 --> 00:11:05,674
of, like, seven, eight, nine plus routers,

257
00:11:05,674 --> 00:11:08,134
probably don't wanna use
the Start all button.

258
00:11:08,134 --> 00:11:10,604
I haven't, actually,
experienced this myself,

259
00:11:10,604 --> 00:11:13,074
but I've read a lot of
websites and documents

260
00:11:13,074 --> 00:11:14,944
that said people,
actually, did have problems

261
00:11:14,944 --> 00:11:17,284
with their laptop when they tried to start

262
00:11:17,284 --> 00:11:19,884
lots of devices simultaneously.

263
00:11:19,884 --> 00:11:21,684
So, I would say, as a
general rule of thumb,

264
00:11:21,684 --> 00:11:23,684
if you've got six or more devices,

265
00:11:23,684 --> 00:11:25,424
it's probably better to
just right-click on them

266
00:11:25,424 --> 00:11:27,924
one at a time and start them up,

267
00:11:27,924 --> 00:11:30,724
rather than starting them
all at the same time.

268
00:11:30,724 --> 00:11:32,634
Now, how do I stop a device?

269
00:11:32,634 --> 00:11:34,134
Same type of thing.

270
00:11:34,134 --> 00:11:38,474
Right-click on it, and
then if I scroll down here,

271
00:11:38,474 --> 00:11:41,334
you can see there is a the Stop button;

272
00:11:41,334 --> 00:11:43,167
and that will stop it.

273
00:11:44,304 --> 00:11:46,174
Or I could go up here to the red box

274
00:11:46,174 --> 00:11:48,841
and stop everything all at once.

275
00:11:50,404 --> 00:11:52,454
And now it's stopped.

276
00:11:52,454 --> 00:11:53,614
So, that's pretty easy.

277
00:11:53,614 --> 00:11:54,854
We, also, talked already about how

278
00:11:54,854 --> 00:11:56,584
to do connections between these guys.

279
00:11:56,584 --> 00:11:58,254
So, let me just go ahead and set up

280
00:11:58,254 --> 00:12:00,994
some FastEthernet
connections between them.

281
00:12:00,994 --> 00:12:05,394
Maybe a Serial connection
between these two guys.

282
00:12:05,394 --> 00:12:08,804
Another Serial connection
between these two guys.

283
00:12:08,804 --> 00:12:10,504
And we'll just leave it like that,

284
00:12:10,504 --> 00:12:14,944
and then press my link
button again to stop that.

285
00:12:14,944 --> 00:12:18,274
Now, one other thing about
links that I wanna mention

286
00:12:18,274 --> 00:12:20,874
is that unlike real physical routers,

287
00:12:20,874 --> 00:12:21,984
now let's think about this.

288
00:12:21,984 --> 00:12:23,284
If you've ever had any practice connecting

289
00:12:23,284 --> 00:12:24,844
real physical routers together,

290
00:12:24,844 --> 00:12:27,354
or actually like in a
remote lab, or something,

291
00:12:27,354 --> 00:12:28,754
one of the things you've experienced,

292
00:12:28,754 --> 00:12:33,014
and you haven't a CCNA
on-up will test you on this,

293
00:12:33,014 --> 00:12:34,254
is that when you have a back-to-back

294
00:12:34,254 --> 00:12:36,394
Serial connection between routers,

295
00:12:36,394 --> 00:12:39,464
one of those routers is acting as a DCE,

296
00:12:39,464 --> 00:12:41,764
and the other is a DTE.

297
00:12:41,764 --> 00:12:43,064
And what does that mean?

298
00:12:43,064 --> 00:12:47,231
That means the DCE-side is
providing the heartbeat,

299
00:12:48,474 --> 00:12:50,604
or like what we call a clock-rate,

300
00:12:50,604 --> 00:12:53,874
that the DTE-side needs to lock onto.

301
00:12:53,874 --> 00:12:56,014
So, when I've got a
real back-to-back cable

302
00:12:56,014 --> 00:12:57,714
between two physical routers,

303
00:12:57,714 --> 00:12:59,854
one of them that's the DCE-side

304
00:12:59,854 --> 00:13:03,254
has to be configured with
the clock-rate command.

305
00:13:03,254 --> 00:13:05,694
Otherwise that interface
either won't come up at all,

306
00:13:05,694 --> 00:13:06,527
or it'll flap,

307
00:13:06,527 --> 00:13:08,254
go up, down, up, down.

308
00:13:08,254 --> 00:13:12,632
Well, here in GNS3, you
don't have to do that.

309
00:13:12,632 --> 00:13:14,742
As soon as I start these routers,

310
00:13:14,742 --> 00:13:16,964
I can just no-shut those interfaces

311
00:13:16,964 --> 00:13:19,764
without inserting any clock-rate
command, and it'll work.

312
00:13:19,764 --> 00:13:22,164
I've actually seen the
GNS3, actually, it puts in

313
00:13:22,164 --> 00:13:26,214
a clock-rate by default on
both sides of the Serial link.

314
00:13:26,214 --> 00:13:28,804
But even if you take that clock-rate out,

315
00:13:28,804 --> 00:13:32,971
no problem because it'll just
come right up, no worries.

316
00:13:33,914 --> 00:13:35,824
Also, everything you
see here like the names,

317
00:13:35,824 --> 00:13:37,054
they can be dragged.

318
00:13:37,054 --> 00:13:38,394
So, if they're currently in the way,

319
00:13:38,394 --> 00:13:41,494
you can drag them out of the way.

320
00:13:41,494 --> 00:13:42,724
Now, you might be looking
at this and saying,

321
00:13:42,724 --> 00:13:46,094
"Okay, but one thing that's
sort of confusing here

322
00:13:46,094 --> 00:13:47,854
"is I don't know which interface

323
00:13:47,854 --> 00:13:49,334
"is connecting to which interface.

324
00:13:49,334 --> 00:13:53,869
"Is this FastEthernet0/0,
or 0/1, or something else?"

325
00:13:53,869 --> 00:13:56,974
Well, here's a real quick and
easy way to figure that out.

326
00:13:56,974 --> 00:14:00,224
Up here in the toolbar at the very top,

327
00:14:01,834 --> 00:14:04,214
notice this one right
here, if I hover over it,

328
00:14:04,214 --> 00:14:07,774
says Show/Hide Interface labels.

329
00:14:07,774 --> 00:14:12,324
So, if I click no that, the
interface names get displayed.

330
00:14:12,324 --> 00:14:14,824
Now, some of 'em don't line
up very well, that's okay.

331
00:14:14,824 --> 00:14:18,064
Just drag and drop it into place,

332
00:14:18,064 --> 00:14:21,494
so it's a little bit
more visually appealing.

333
00:14:21,494 --> 00:14:23,204
So, you're definitely gonna wanna do that.

334
00:14:23,204 --> 00:14:25,574
Click on that Show Interfaces button

335
00:14:25,574 --> 00:14:27,634
to keep track in your mind

336
00:14:27,634 --> 00:14:31,944
which interface is connected
to which interface.

337
00:14:31,944 --> 00:14:33,474
What else can you do from here?

338
00:14:33,474 --> 00:14:36,244
All right, another thing I wanna show you.

339
00:14:36,244 --> 00:14:39,714
A lot of times to make the
topology more visually exciting,

340
00:14:39,714 --> 00:14:41,924
more visually illustrative
of what you want,

341
00:14:41,924 --> 00:14:43,984
you wanna draw, like, circles and squares

342
00:14:43,984 --> 00:14:46,764
to represent, like, OSPF areas,

343
00:14:46,764 --> 00:14:49,664
BGP autonomous systems, stuff like that.

344
00:14:49,664 --> 00:14:51,894
So, how would you do that?

345
00:14:51,894 --> 00:14:55,689
Well, that's here in this upper area.

346
00:14:55,689 --> 00:14:59,004
So, this right here draws a rectangle.

347
00:14:59,004 --> 00:15:01,534
So, if I click on it,
and then click anywhere

348
00:15:01,534 --> 00:15:04,774
on my white space, there's a rectangle.

349
00:15:04,774 --> 00:15:06,774
And then I can just, sort
of like in PowerPoint,

350
00:15:06,774 --> 00:15:09,191
I can drag it and reshape it.

351
00:15:13,374 --> 00:15:16,624
Now, notice that by default, the shape,

352
00:15:17,584 --> 00:15:20,024
you know, think about this like in,

353
00:15:20,024 --> 00:15:22,694
if you have any experience
with Microsoft PowerPoint,

354
00:15:22,694 --> 00:15:26,234
you know that as you put
things on top of things,

355
00:15:26,234 --> 00:15:28,479
some of the stuff
underneath can disappear.

356
00:15:28,479 --> 00:15:30,934
PowerPoint has this idea of layers, right,

357
00:15:30,934 --> 00:15:32,674
where if you have a shape,

358
00:15:32,674 --> 00:15:33,874
and then you put something else on it,

359
00:15:33,874 --> 00:15:35,374
the other thing will be on the top layer

360
00:15:35,374 --> 00:15:36,274
and this will be on the bottom layer.

361
00:15:36,274 --> 00:15:37,904
But with Microsoft PowerPoint,

362
00:15:37,904 --> 00:15:39,974
you can do, like, the Send Backward,

363
00:15:39,974 --> 00:15:43,244
or Bring Forward option
to change the layers.

364
00:15:43,244 --> 00:15:44,514
Well, you can do the
same thing right here.

365
00:15:44,514 --> 00:15:46,884
Like right now, you say,
"Hey, where are my links?"

366
00:15:46,884 --> 00:15:48,284
Well, the links are still there,

367
00:15:48,284 --> 00:15:51,184
but they're underneath the
square; we can't see them.

368
00:15:51,184 --> 00:15:53,384
So, what we wanna do, is
we wanna swap 'em around.

369
00:15:53,384 --> 00:15:57,194
We wanna take this square
here and lower it one layer,

370
00:15:57,194 --> 00:15:59,294
so that the links are on top of it,

371
00:15:59,294 --> 00:16:00,664
and we can see that.

372
00:16:00,664 --> 00:16:04,064
So, just on the square itself right-click,

373
00:16:04,064 --> 00:16:06,314
and select Lower one layer.

374
00:16:07,934 --> 00:16:09,564
And now it's gonna give you
just a little notification.

375
00:16:09,564 --> 00:16:11,874
It's gonna say, "Now you're
gonna have to right-click

376
00:16:11,874 --> 00:16:15,014
"on this to bring it up again
if you want to move it."

377
00:16:15,014 --> 00:16:17,644
See, now that's on a lower layer, I can't,

378
00:16:17,644 --> 00:16:19,784
well, actually I can move it,
which is kind of interesting.

379
00:16:19,784 --> 00:16:22,554
It is movable, so, that
might be an old message.

380
00:16:22,554 --> 00:16:24,609
But there it is.

381
00:16:24,609 --> 00:16:28,454
And I can, also, put in
an ellipse, or a circle.

382
00:16:28,454 --> 00:16:32,621
And just like the square, I
can modify the shape of that.

383
00:16:35,434 --> 00:16:37,494
And notice right now that
that's something new;

384
00:16:37,494 --> 00:16:38,774
so, that ended up on the top layers,

385
00:16:38,774 --> 00:16:40,134
now overlaying the circle.

386
00:16:40,134 --> 00:16:42,884
And I wanna lower that one layer.

387
00:16:44,374 --> 00:16:45,374
There we go.

388
00:16:46,474 --> 00:16:49,984
What are some other
things that you can do?

389
00:16:49,984 --> 00:16:51,914
We know that by default when you save,

390
00:16:51,914 --> 00:16:54,314
anytime you do File, Save Project,

391
00:16:54,314 --> 00:16:57,954
it creates a picture of this, a PNG file.

392
00:16:57,954 --> 00:17:00,557
But let's say, for example,

393
00:17:00,557 --> 00:17:02,584
whatever reason you didn't
wanna save it right now,

394
00:17:02,584 --> 00:17:04,594
but you did wanna create a picture.

395
00:17:04,594 --> 00:17:06,164
All right, very easy.

396
00:17:06,164 --> 00:17:09,604
Right here, this button,
Take a screenshot.

397
00:17:09,604 --> 00:17:11,687
So, I'll just click that.

398
00:17:12,634 --> 00:17:13,767
And now it's asking me,

399
00:17:13,767 --> 00:17:15,194
"Where do I wanna put the screenshot?"

400
00:17:15,194 --> 00:17:18,694
So, I'll just save it as Current-topology.

401
00:17:20,874 --> 00:17:23,457
And I'll save it to my Desktop.

402
00:17:24,514 --> 00:17:26,484
And then I can Save it.

403
00:17:26,484 --> 00:17:29,454
So, that's just another way
of creating a screenshot

404
00:17:29,454 --> 00:17:32,024
of your workspace right there.

405
00:17:32,024 --> 00:17:34,824
So, that's to create a screenshot.

406
00:17:34,824 --> 00:17:35,994
As you can see, these buttons,

407
00:17:35,994 --> 00:17:36,924
like it sounds like,

408
00:17:36,924 --> 00:17:41,564
zoom in, or zoom out to
allow you to move around.

409
00:17:41,564 --> 00:17:43,464
You've got some scrollbars
here if you wanna center

410
00:17:43,464 --> 00:17:45,714
things a little bit better.

411
00:17:46,704 --> 00:17:50,574
And there's a few more things
I wanna show you on here.

412
00:17:50,574 --> 00:17:52,014
So, what else can we talk about?

413
00:17:52,014 --> 00:17:55,644
Okay, so, let's start up
my routers, as an example.

414
00:17:55,644 --> 00:17:56,944
I'll just Start 'em all

415
00:17:56,944 --> 00:18:00,184
because I've only got four
routers here to begin with.

416
00:18:00,184 --> 00:18:01,744
Okay, so, they're all
started at this point.

417
00:18:01,744 --> 00:18:03,414
Now, the moment of truth.

418
00:18:03,414 --> 00:18:04,984
How do I actually configure these things?

419
00:18:04,984 --> 00:18:07,954
I mean, I did all this
because I wanna practice

420
00:18:07,954 --> 00:18:09,464
the Cisco iOS command-line.

421
00:18:09,464 --> 00:18:11,594
So, how do I do that?

422
00:18:11,594 --> 00:18:12,934
Well, there's a couple
of ways you can do this.

423
00:18:12,934 --> 00:18:16,684
Now, by default, GNS3
defaults to using Putty

424
00:18:18,464 --> 00:18:21,604
as its terminal, as its
terminal applications.

425
00:18:21,604 --> 00:18:25,972
So, with Putty, every time
you click on a router,

426
00:18:25,972 --> 00:18:27,714
or an EtherSwitch router,

427
00:18:27,714 --> 00:18:29,944
it's gonna bring up a new Putty window.

428
00:18:29,944 --> 00:18:32,514
And, so, you're gonna end
up with potentially lots

429
00:18:32,514 --> 00:18:35,784
of Putty windows that you're
gonna have to navigate around.

430
00:18:35,784 --> 00:18:36,954
In my particular case,

431
00:18:36,954 --> 00:18:40,354
I've already changed it in the
background to use SecureCRT,

432
00:18:40,354 --> 00:18:42,294
so I can have tab-ability.

433
00:18:42,294 --> 00:18:43,594
And I'll show you in another video,

434
00:18:43,594 --> 00:18:44,894
it's real quick to do that,

435
00:18:44,894 --> 00:18:46,634
but I'll show you in another
video how to do that.

436
00:18:46,634 --> 00:18:49,104
So, basically, to get to your Console,

437
00:18:49,104 --> 00:18:50,934
you can do one of two things.

438
00:18:50,934 --> 00:18:54,291
You can double-click on a router.

439
00:18:54,291 --> 00:18:55,291
There we go.

440
00:18:56,544 --> 00:18:59,444
And notice how fast it is.

441
00:18:59,444 --> 00:19:00,874
I mean, there it is.

442
00:19:00,874 --> 00:19:02,714
I mean, if that was a real Cisco router

443
00:19:02,714 --> 00:19:04,244
and you powered it on,

444
00:19:04,244 --> 00:19:06,884
you'd be looking at three to four minutes

445
00:19:06,884 --> 00:19:08,884
of just sitting there
and twiddling your thumbs

446
00:19:08,884 --> 00:19:11,024
while the iOS came up fully.

447
00:19:11,024 --> 00:19:14,224
But, remember, you already
decompressed this image

448
00:19:14,224 --> 00:19:16,094
when you inserted it into GNS3;

449
00:19:16,094 --> 00:19:18,224
so, that speeded up this whole process.

450
00:19:18,224 --> 00:19:19,794
So, here we are on the router.

451
00:19:19,794 --> 00:19:21,454
And notice like what I said before,

452
00:19:21,454 --> 00:19:23,473
what I said earlier.

453
00:19:23,473 --> 00:19:25,264
Even though when I
right-clicked on the router

454
00:19:25,264 --> 00:19:28,534
and I renamed it, see here's
the name of the router,

455
00:19:28,534 --> 00:19:31,518
but it did not, actually, change
the hostname of the router.

456
00:19:31,518 --> 00:19:34,914
It still has the default
hostname of Router.

457
00:19:34,914 --> 00:19:37,144
So, by changing the
hostname by right-clicking,

458
00:19:37,144 --> 00:19:39,514
that just changed the topology image;

459
00:19:39,514 --> 00:19:42,654
it didn't actually change anything else.

460
00:19:42,654 --> 00:19:44,884
So, that's one way you
can get into the router

461
00:19:44,884 --> 00:19:47,024
is by double-clicking on it.

462
00:19:47,024 --> 00:19:49,664
There's two more ways you can do it.

463
00:19:49,664 --> 00:19:52,634
You can right-click on it.

464
00:19:52,634 --> 00:19:54,034
And if you right-click on it,

465
00:19:54,034 --> 00:19:55,134
now hold on a sec, you might think,

466
00:19:55,134 --> 00:19:57,064
"Oh, Configure, that's what I want."

467
00:19:57,064 --> 00:19:59,374
No, that's not what that is.

468
00:19:59,374 --> 00:20:02,104
That Configure button, if you select that,

469
00:20:02,104 --> 00:20:03,604
brings up this.

470
00:20:03,604 --> 00:20:08,244
For example, you said, "Oh,
when I put in this 3725,

471
00:20:08,244 --> 00:20:10,614
"I actually wanted to
put some wics in there,

472
00:20:10,614 --> 00:20:12,084
"and I forgot to do that."

473
00:20:12,084 --> 00:20:15,251
Or, "I wanna change the
amount of memory it's using."

474
00:20:15,251 --> 00:20:18,084
Or, you know, "Change the image pathing."

475
00:20:18,084 --> 00:20:19,454
You probably don't wanna
do any of that stuff.

476
00:20:19,454 --> 00:20:22,594
So, it's not Config;
that's not what you want.

477
00:20:22,594 --> 00:20:24,064
When you right-click on it,

478
00:20:24,064 --> 00:20:27,464
you wanna go to Console, Console.

479
00:20:27,464 --> 00:20:29,024
And then select that.

480
00:20:29,024 --> 00:20:32,024
And that will bring up your Console.

481
00:20:33,089 --> 00:20:34,604
So, I said there were three ways;

482
00:20:34,604 --> 00:20:36,264
so, far I've shown you two of them.

483
00:20:36,264 --> 00:20:39,014
Double-clicking the
router, right-clicking it

484
00:20:39,014 --> 00:20:40,544
and selecting Console,

485
00:20:40,544 --> 00:20:42,784
and then if you have, like I said,

486
00:20:42,784 --> 00:20:45,084
a fairly small topology like this,

487
00:20:45,084 --> 00:20:46,814
remember how I said you could start

488
00:20:46,814 --> 00:20:49,084
all the routers at one
time with this green arrow

489
00:20:49,084 --> 00:20:52,054
and you could stop all
the routers at one time

490
00:20:52,054 --> 00:20:53,494
with the red square?

491
00:20:53,494 --> 00:20:56,124
Well, guess what, this
little icon right here,

492
00:20:56,124 --> 00:20:58,024
if I zoom in on that,

493
00:20:58,024 --> 00:21:00,894
Console connect to all devices.

494
00:21:00,894 --> 00:21:03,834
If I press that, it will
bring up a Console window

495
00:21:03,834 --> 00:21:08,404
to every single device
that I have simultaneously.

496
00:21:08,404 --> 00:21:10,544
And because I'm using SecureCRT,

497
00:21:10,544 --> 00:21:12,474
and I've got set up for tabs,

498
00:21:12,474 --> 00:21:13,374
there they are.

499
00:21:13,374 --> 00:21:17,014
They all came up at the same time.

500
00:21:17,014 --> 00:21:19,701
And now I can start doing
my lab work at this point.

501
00:21:19,701 --> 00:21:22,684
I can start configuring
and doing whatever I want.

502
00:21:22,684 --> 00:21:25,384
And then when I'm done, just hit File,

503
00:21:25,384 --> 00:21:28,124
Save project, save the current state,

504
00:21:28,124 --> 00:21:30,184
and I'll be finished.

505
00:21:30,184 --> 00:21:31,664
Now, certainly there's a few more things

506
00:21:31,664 --> 00:21:33,534
I intend to show you in this video series,

507
00:21:33,534 --> 00:21:36,204
but at this point, if you
just stopped right here

508
00:21:36,204 --> 00:21:37,424
and you walked away,

509
00:21:37,424 --> 00:21:39,974
you should be able to
create a basic topology

510
00:21:39,974 --> 00:21:43,544
of routers connected via
either Ethernet or Serial.

511
00:21:43,544 --> 00:21:46,364
You know how to start them,
you know how to stop them.

512
00:21:46,364 --> 00:21:47,934
You know how to open up Console windows

513
00:21:47,934 --> 00:21:49,544
to get in there and start configuring.

514
00:21:49,544 --> 00:21:51,684
And, at this point, you're good to go.

515
00:21:51,684 --> 00:21:53,784
But what are some things you don't know?

516
00:21:53,784 --> 00:21:54,684
Well, some of the things
I'm gonna show you

517
00:21:54,684 --> 00:21:57,254
in the future videos are
number one, switches.

518
00:21:57,254 --> 00:21:59,254
How do I insert switches
into this topology,

519
00:21:59,254 --> 00:22:00,454
and what are my various options?

520
00:22:00,454 --> 00:22:01,924
I'll talk about that.

521
00:22:01,924 --> 00:22:03,124
What about LAN-switching?

522
00:22:03,124 --> 00:22:06,434
For example, at the
CCNA and the CCNP level,

523
00:22:06,434 --> 00:22:08,554
they want you to know about frame relay.

524
00:22:08,554 --> 00:22:09,794
And, so, you're gonna wanna get experience

525
00:22:09,794 --> 00:22:12,904
with Cisco iOS commands
that relate to frame relay,

526
00:22:12,904 --> 00:22:15,704
which means you're gonna
need a frame relay switch.

527
00:22:15,704 --> 00:22:17,074
How do I do that?

528
00:22:17,074 --> 00:22:18,974
So, those and a lot of other stuff

529
00:22:18,974 --> 00:22:21,344
are things I'm gonna talk about in videos

530
00:22:21,344 --> 00:22:23,314
coming up in just a moment.

531
00:22:23,314 --> 00:22:26,231
(electronic music)