Chapter 3
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Eastern Gateway Community College *
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Subject
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Date
Dec 6, 2023
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3.1.8
1 – downed router connection - Connect the laptop's COM/USB port to the router's console port using a rollover cable.
2 – 3 -
4 – non-volatile configuration memory has not been setup - No configuration file has been saved to NVRAM.
5 – Secure router – Keep the router in a locked room AND Set a password and use the login
command.
6 -
7 – Boots into default settings - The router configuration register is set to bypass startup configuration.
8 – Configuration register runs during POST – How the router boots up
9 – Save changes for boot - copy run start
10 -
3.2.7
Lab Questions
Q1What is the IOS version?
Your answer: Correct answer: 12.4
Q2How much NVRAM (non-volatile RAM) is available on the router?
Your answer: Correct answer: 191 KB
Q3How much DRAM does the router have?
Your answer: Correct answer: 256 MB
Q4How many serial interfaces does the router have?
Your answer:
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Correct answer: 4
Complete this lab as follows:
1.
Select Router
to open the CLI.
2.
Press Enter
to get started.
3.
At the prompt, type enable
and press Enter
to go to privileged mode.
4.
Type show version
and press Enter
.
5.
In the top right corner, select Answer Questions
.
6.
Answer the questions.
3.2.12
1 – Router# - Privileged EXEC
2 – Commands in history buffer – show history
3 – Size of config files – show flash
4 – Use NVRAM – 0x2102
5 – save configuration file in NVRAM to a TFTP - copy start tftp
6 – 7 – backup IOS image to TFTP - copy flash tftp
8 – commands available in current mode - ?
9 – Same command repeatedly – Press the Up Arrow Key
10 – Remove contents of NVRAM - erase nvram
3.3.5
1 – Add VoIP – Unified Communication
2 – Security feature, Routers UDI - show license udi
3 – Enable security feature, reload command - license install usbflash1:FTX1788948P_201304123432565291.lic
4 – 5 – MPLS support enable - ipbasek9
6 – Feature set that is enabled – show version AND show license
7 – Evaluate prior to purchase - license boot module c2900 technology-package uck9
8 –
9 – Install license on a cisco device - Privileged exec mode
10 – show following info in table – show license feature
3.4.3
Complete this lab as follows:
1.
Configure the hostname and the interface descriptions on the switch. a.
Select Branch 1
in the diagram.
b.
Press Enter
to get started.
c.
At the > prompt, type enable
and press Enter
.
d.
At the # prompt, type configure terminal
and press Enter
.
e.
At the (config)# prompt, type hostname Branch1
and press Enter
.
f.
At the Branch1(config)# prompt, type interface FastEthernet0/1
and press Enter
.
g.
At the Branch1(config-if)# prompt, type description Wrk1
and press Enter
.
h.
At the Branch1(config-if)# prompt, type interface FastEthernet0/2
and press Enter
.
i.
At the Branch1(config-if)# prompt, type description Wrk2
and press Enter
.
j.
At the Branch1(config-if)# prompt, type interface FastEthernet0/3
and press Enter
.
k.
At the Branch1(config-if)# prompt, type description Wrk3
and press Enter
.
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l.
At the Branch1(config-if)# prompt, type interface FastEthernet0/24
and press Enter
.
m.
At the Branch1(config-if)# prompt, type description Default gateway
and press Enter
.
n.
At the Branch1(config-if)# prompt, type exit
and press Enter
.
o.
At the Branch1(config)# prompt, type exit
and press Enter
.
p.
At the Branch1# prompt, type c
opy running-config startup-config
and press Enter
.
q.
Press Enter
.
2.
Configure the hostname and the interface descriptions on the router. a.
Select SFO
in the diagram.
b.
Press Enter
to get started.
c.
At the > prompt, type enable
and press Enter
.
d.
At the # prompt, type configure terminal
and press Enter
.
e.
At the (config)# prompt, type hostname SFO
and press Enter
.
f.
At the SFO(config)# prompt, type interface FastEthernet0/0
and press Enter
.
g.
At the SFO(config-if)# prompt, type description Link to branch office
and press
Enter
.
h.
At the SFO(config-if)# prompt, type interface Serial0/1/0
and press Enter
.
i.
At the SFO(config-if)# prompt, type description Link to main office
and press Enter
.
j.
At the SFO(config-if)# prompt, type interface Serial0/1/1
and press Enter
.
k.
At the SFO(config-if)# prompt, type description Link to internet
and press Enter
.
l.
At the SFO(config-if)# prompt, type exit
and press Enter
.
m.
At the SFO(config)# prompt, type exit
and press Enter
.
n.
At the SFO# prompt, type copy running-config startup-config
and press Enter
.
o.
Press Enter
.
3.4.6
In this lab, your task is to:
Create the following banners with the appropriate punctuation in the banner text, but do not include a hard return in the banner except where noted: Banner
Banner text
Message of the day banner
You have connected to the SFO router.
Banner that displays before the login prompt
(Place each sentence on a different line)
Authorized personnel only.
Unauthorized users will be vaporized immediately!
Banner that displays after a successful login
Beam me up Scotty!
Save your changes in the startup-config file.
Complete this lab as follows:
1.
Select SFO
.
2.
Press Enter
to get started.
3.
Type cisco
for the password and press Enter
.
4.
At the SFO> prompt, type enable
and press Enter
.
5.
At the SFO# prompt, type configure terminal
and press Enter
.
6.
At the SFO(config)# prompt, type banner motd *You have connected to the SFO router.*
and press Enter
.
7.
At the SFO(config)# prompt, type banner login &Authorized personnel only.
and press
Enter
.
8.
Type Unauthorized users will be vaporized immediately!&
and press Enter
.
9.
At the SFO(config)# prompt, type banner exec (Beam me up Scotty!(
and press Enter
.
10. At the SFO(config)# prompt, type exit
and press Enter
.
11. Save your changes to the startup-config file as follows: a.
At the SFO# prompt, type copy running-config startup-config
and press Enter
.
b.
Press Enter
to begin building the configuration.
3.4.7
In this lab, your task is to modify the current configuration as follows:
Change the banner that shows before the login prompt to:
Please enter the administrator password:
(do not include a hard return in the banner text)
Delete the banner that displays after a successful login.
Save your changes to the startup-config file.
Complete this lab as follows:
1.
Select SFO
.
2.
Press Enter
to get started.
3.
Type cisco
for the password and press Enter
.
4.
At the SFO> prompt, type enable
and press Enter
.
5.
At the SFO# prompt, type configure terminal
and press Enter
.
6.
At the SFO(config)# prompt, type banner login *Please enter the administrator password:*
and press Enter
.
*
is the delimiting character that identifies the start and the end of the banner text. 7.
At the SFO(config)# prompt, type no bann exec
and press Enter
.
8.
Press Ctrl
+ Z
.
9.
Save your changes to the startup-config file. a.
At the SFO# prompt, type copy running-config startup-config
and press Enter
.
b.
Press Enter
to begin building the configuration.
3.4.8
1 – hostname LAS - Router(config)#
hostname LAS
2 – configure description for eighth gigabit ethernet interface - RTR07(config)#int gi0/8
RTR07(config)#description WAN to Main Office
3 – Description to the first serial interface - int ser 0
description BOS to SFO
4 – troubleshooting a router at the console, output scrolls past faster than you can read – show log AND logging buffered
5 – configured from console by console - no logging console
6 – see logging message from IOS appear on the terminal – terminal monitor
7 – Banners add security - Banners provide a notice of intent, informing users that access is controlled or that activity may be logged.
8 – Banner order – motd, login, exec
9 – change second banner - banner login *Only administrator access is allowed*
10 – remove motd - no banner motd
3.5.3
In this lab, your task is to:
Set the Branch1 password using the password
command. Use the login
command to require the password. If you configure the password but don't use the login
command, login is allowed without the password. Configure the following passwords: Line
Password
Console 0
tp89jy5$
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VTY 0
ak73#pt
VTY 1–4
pj61@bb4
Make sure login is allowed on the console and the VTY lines with a password.
Prevent access through the remaining VTY lines (5–15). To prevent login, use the login
command but do not
set a password.
Save your changes to the startup-config file.
Complete this lab as follows:
1.
Select Branch1
.
2.
Press Enter
to get started.
3.
At the Branch1> prompt, type enable
and press Enter
.
4.
Type cisco
as the password and press Enter
.
5.
At the Branch1# prompt, type config t
and press Enter
.
6.
At the Branch1(config)# prompt, type line con 0
and press Enter
.
7.
At the Branch1(line)# prompt, type password tp89jy5$
and press Enter
.
8.
At the Branch1(line)# prompt, type login
and press Enter
.
9.
At the Branch1(line)# prompt, type line vty 0
and press Enter
.
10. At the Branch1(line)# prompt, type password ak73#pt
and press Enter
.
11. At the Branch1(line)# prompt, type login
and press Enter
.
12. At the Branch1(line)# prompt, type line vty 1 4
and press Enter
.
13. At the Branch1(line)# prompt, type password pj61@bb4
and press Enter
.
14. At the Branch1(line)# prompt, type login
and press Enter
.
15. At the Branch1(line)# prompt, type line vty 5 15
and press Enter
.
16. At the Branch1(line)# prompt, type login
and press Enter
.
17. At the Branch1(line)# prompt, type exit
and press Enter
.
18. At the Branch1(config)# prompt, type exit
and press Enter
.
19. At the Router# prompt, type copy run start
and press Enter
.
20. Press Enter
to begin building the configuration.
3.5.6
In this lab, your task is to:
Set the enable secret to cisco
.
Set the enable password to cisco
. When prompted, do not re-enter the password.
Go to privileged mode.
Type show run
and view the configuration file. What is the enable password?
Set the enable password to study
.
Go to privileged mode
Switch to privileged mode using study
for the password. Why doesn't this password work?
Remove the enable secret password using no enable secret
in global configuration mode.
Exit global configuration mode and re-enter privileged mode. Which password did you use to gain privileged access?
Change the following passwords: o
Enable password: 7y%pirt
o
Enable secret: opo63!m@
Save your changes to the startup-config file.
Complete this lab as follows:
1.
Select Branch 1
.
2.
Configure the enable secret password. a.
Press Enter
to get started.
b.
At the prompt, type enable
and press Enter
to go to privileged mode.
c.
Type configure terminal
and press Enter
.
d.
Type enable secret cisco
and press Enter
.
3.
In global configuration mode, type enable password cisco
and press Enter
to configure the enable password. As you can see, using the same password for the enable secret and the enable password is not recommended.
4.
Type exit
and press Enter
to go to privileged mode.
5.
Type show run
and press Enter
to view the configuration file.
6.
Change the enable password. a.
Type configure terminal
and press Enter
.
b.
Type enable password study
and press Enter
.
7.
Go back to privileged mode. a.
Type exit
and press Enter
.
b.
Type disable
and press Enter
.
8.
Switch to user mode using study for the password. a.
Type enable
and press Enter
to switch to exec mode.
b.
Type study
and press Enter
as the password. This password does not work because the enable secret password is set and required.
9.
Remove the enable secret password. a.
Type cisco
and press Enter
for the password.
b.
Type configure terminal
and press Enter
.
c.
Type no enable secret
and press Enter
.
10. Exit global configuration mode and re-enter privileged mode. a.
Type exit
and press Enter
.
b.
Type disable
and press Enter
.
c.
Type enable
and press Enter
.
d.
Type study
and press Enter
for the password because the cisco password was removed.
11. Change the passwords. a.
Type configure terminal
and press Enter
.
b.
Type enable password 7y%pirt
and press Enter
.
c.
Type enable secret opo63!m@
and press Enter
.
12. Save your changes. a.
Type exit
and press Enter
.
b.
Type copy running-config startup-config
and press Enter
.
c.
Press Enter
to begin building the configuration.
3.5.7
In this lab, your task is to configure the following policies:
Use the show start
command to view the current configuration. Notice that a password is
currently set for VTY lines 1–4, and no password is set for VTY 0.
Configure the router to require te%56t
as the password to enter privileged exec mode. Make sure this password is encrypted.
Require yuw#m
as the console password.
Require yaba8&y
as the password for VTY line 0.
Remove the password from VTY 1–4.
Save your changes to the startup-config file.
Complete this lab as follows:
1.
Select SFO
.
2.
Press Enter
to get started.
3.
At the SFO> prompt, type enable
and press Enter
.
4.
At the SFO> prompt, type show start
and press Enter
.
5.
At the SFO# prompt, type configure terminal
and press Enter
.
6.
At the SFO(config)# prompt, type enable secret te%56t
and press Enter
.
7.
At the SFO(config)# prompt, type line con 0
and press Enter
.
8.
At the SFO(config-line)# prompt, type password yuw#m
and press Enter
.
9.
At the SFO(config-line)# prompt, type login
and press Enter
.
10. At the SFO(config-line)# prompt, type line vty 0
and press Enter
.
11. At the SFO(config-line)# prompt, type password yaba8&y
and press Enter
.
12. At the SFO(config-line)# prompt, type login
and press Enter
.
13. At the SFO(config-line)# prompt, type line vty 1 4
and press Enter
.
14. At the SFO(config-line)# prompt, type no password
and press Enter
.
15. At the SFO(config-line)# prompt, type exit
and press Enter
.
16. At the SFO(config)# prompt, type exit
and press Enter
.
17. At the SFO# prompt, type copy run start
and press Enter
.
18. Press Enter
to begin building the configuration.
3.5.11
1 – most important thing to do to prevent console access – Keep the router in a locked room
2 – prevent access from Telnet - For the VTY lines, add the login
parameter and remove any passwords.
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3 - telnet session without being prompted for a password - In line configuration mode, add the login
parameter.
4 – service password-encryption - Passwords are easily broken.
5 – telnet session – garage
6 – switch to privileged EXEC mode – enable secret
7 – password recovery process – ROMmon
8 – ignore startup config file - confreg 0x2142
9 – load the startup configuration upon boot - confreg 0x2102
10 – access the ROM monitor - Remove the external flash memory while the device is powered off and then boot. AND Use a break sequence during the boot process.
3.6.4
Enable CDP on the router and all interfaces
Q1Which device is connected to the SFO Serial 0/1/0 interface?
Your answer: LAX
Correct answer: LAX
Q2Which device is connected to the SFO Serial 0/1/0 interface?
Your answer: None
Correct answer: None
Q3Which neighboring devices are shown?
Your answer: None
Correct answer: None
Q4Where can you find the no cdp run entry?
Your answer: In the line configuration sections
Correct answer: In the interface subsections
Q5Which additional details does the show cdp neighbors detail command show compared to the show cdp neighbor command?
Your answer: Network address, enabled protocols, and software version
Correct answer: Network address, enabled protocols, and software version
Explanation
In this lab, your task is to complete the following on the SFO switch:
View CDP information learned from neighboring devices.
Disable CDP on the Serial 0/1/0 interface and view the results.
Disable CDP on a router to prevent the router from exchanging CDP packets and view the
results.
Find the new location of the no cdp run
entry.
Enable CDP on the Serial 0/1/0 interface and view the results.
Answer the Questions.
Complete this lab as follows:
1.
Select SFO
.
2.
Press Enter
to get started.
3.
At the SFO> prompt, type enable
and press Enter
.
4.
View the CDP information learned from neighboring devices. a.
At the SFO# prompt, type show cdp neighbor
and press Enter
.
b.
Answer Question 1.
5.
Disable CDP on the Serial 0/1/0 interface and view the results. a.
At the SFO# prompt, type configure terminal
and press Enter
.
b.
At the SFO(config)# prompt, type interface Serial 0/1/0
and press Enter
.
c.
At the SFO(config-if)# prompt, type no cdp enable
and press Enter
.
d.
Press Ctrl
+ Z
.
e.
At the SFO# prompt, type show cdp neighbor
and press Enter
.
f.
Answer Question 2.
6.
Disable CDP on a router to prevent the router from exchanging CDP packets and view the
results. a.
At the SFO# prompt, type configure terminal
and press Enter
.
b.
At the SFO(config)# prompt, type no cdp run
and press Enter
.
c.
Press Ctrl
+ Z
.
d.
At the SFO# prompt, type show cdp neighbor
and press Enter
.
e.
Answer Question 3.
7.
Find the new location of the no cdp run
entry. a.
At the SFO# prompt, type show run
and press Enter
.
b.
Find the no cdp run
entry.
c.
Answer Question 4.
8.
Enale CDP on the Serial 0/1/0 interface and view the results. a.
At the SFO# prompt, type configure terminal
and press Enter
.
b.
At the SFO(config)# prompt, type interface Serial 0/1/0
and press Enter
.
c.
At the SFO(config-if)# prompt, type cdp enable
and press Enter
to enable CDP on the Serial 0/1/0 interface.
d.
At the SFO(config-if)# prompt, type exit
and press Enter
.
e.
At the SFO(config-if)# prompt, type cdp run
and press Enter
to enable CDP on the router.
f.
Press Ctrl
+ Z
.
g.
At the SFO# prompt, type show cdp neighbors detail
and press Enter
to view the CDP information learned from neighboring devices.
h.
Answer Question 5.
3.6.5
Complete this lab as follows:
1.
Configure the Branch 1 switch. a.
Select Branch 1
.
b.
Press Enter
to get started.
c.
At the Branch1> prompt, type enable
and press Enter
.
d.
At the Branch1# prompt, type configure terminal
and press Enter
.
e.
At the Branch1(config)# prompt, type cdp timer 90
and press Enter
.
f.
At the Branch1(config)# prompt, type cdp holdtime 250
and press Enter
.
g.
At the Branch1# prompt, type exit
and press Enter
.
h.
At the Branch1# prompt, type copy running-config startup-config
and press Enter
.
i.
Press Enter
to begin building the configuration.
2.
Configure the SFO router. a.
Select SFO
.
b.
Press Enter
to get started.
c.
At the SFO> prompt, type enable
and press Enter
.
d.
At the SFO# prompt, type configure terminal
and press Enter
.
e.
At the SFO(config)# prompt, type cdp timer 90
and press Enter
.
f.
At the SFO(config)# prompt, type cdp holdtime 250
and press Enter
.
g.
At the SFO(config)# prompt, type int serial0/1/1
and press Enter
.
h.
At the SFO(config-if)# prompt, type no cdp enable
and press Enter
.
i.
At the SFO(config-if)# prompt, type exit
and press Enter
.
j.
At the SFO(config)# prompt, type exit
and press Enter
.
k.
At the SFO# prompt, type copy running-config startup-config
and press Enter
.
l.
Press Enter
to begin building the configuration.
3.6.6
In this lab, your task is to configure the following CDP settings on the SFO router:
Configure the router to use CDP to discover neighbor Cisco devices on FastEthernet0/0 and Serial0/1/0, but not Serial0/1/1.
Reset the CDP holdtime and timer values to their default values.
Enable CDP for the FastEthernet0/0 interface.
Enable CDP for the Serial0/1/0 interface.
Disable CDP for the Serial0/1/1 interface.
Use the show cdp neighbor
command to check your work and verify that everything works correctly.
Save your changes to the startup-config file.
Complete this lab as follows:
1.
Select SFO
.
2.
Press Enter
to get started.
3.
At the SFO> prompt, type enable
and press Enter
.
4.
At the SFO# prompt, type configure terminal
and press Enter
.
5.
At the SFO(config)# prompt, type cdp run
and press Enter
.
6.
Reset the CDP holdtime and timer values to their default values.
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a.
At the SFO(config)# prompt, type cdp timer 60
and press Enter
.
b.
At the SFO(config)# prompt, type cdp holdtime 180
and press Enter
.
7.
Enable CDP for the FastEthernet0/0 interface. a.
At the SFO(config)# prompt, type int fa0/0
and press Enter
.
b.
At the SFO(config-if)# prompt, type cdp enable
and press Enter
.
8.
Enable CDP for the Serial0/1/0 interface. a.
At the SFO(config-if)# prompt, type int s0/1/0
and press Enter
.
b.
At the SFO(config-if)# prompt, type cdp enable
and press Enter
.
9.
Disable CDP for the Serial0/1/1 interface. a.
At the SFO(config-if)# prompt, type int s0/1/1
and press Enter
.
b.
At the SFO(config-if)# prompt, type no cdp enable
and press Enter
.
c.
Press Ctrl
+ Z
.
10. At the SFO(config-if)# prompt, type show cdp neighbor
and press Enter
to check your work.
Notice that int s0/1/1 is no longer a neighbor because you removed it.
11. Save your changes to the startup-config file a.
At the SFO# prompt, type copy running-config startup-config
and press Enter
.
b.
Press Enter
to begin building the configuration.
3.6.7
Lab Questions
Q1Which device is connected to the Memphis FastEthernet0/1 interface?
Your answer: Miami
Correct answer: Branch3
Q2Which device is connected to the Memphis Serial0/0/1 interface?
Your answer: Correct answer: Miami
Q3What is the IP address of the device connected to the Memphis Serial0/0/0 interface?
Your answer: Correct answer: 172.16.224.2
Q4What is the IP address of the device connected to the Memphis FastEthernet0/0 interface?
Your answer: Correct answer: 192.168.30.130
Q5Which remote port connects Branch3 to the Memphis router?
Your answer: Correct answer: GigabitEthernet0/1
Q6Which remote port connects Miami to the Memphis router?
Your answer: Correct answer: Serial0/0/0
Q7Which platform is running on the device connected to the S0/0/1 interface?
Your answer: Correct answer: 1841
Explanation
1.
Select Router
.
2.
Press Enter
to get started.
3.
At the Memphis> prompt, type enable
and press Enter
.
4.
At the Memphis# proenmpt, type show cdp neighbors
and press Enter
.
5.
At the Memphis# prompt, type show cdp neighbors detail
and press Enter
.
6.
In the top right corner, select Answer Questions
.
7.
Answer the questions.
3.6.9
1 – 2 – send CDP packets every 30 seconds – cdp timer 30
3 - what IP address has been configured on the E0 interface on the New York router - Telnet to New York.
From privileged mode, type show interface E0
.AND Telnet to Toronto. From privileged mode, type show cdp neighbors detail
.
4 - prevent the Toronto router from sharing any information about itself with neighboring devices - Toronto(config)#
no cdp run
5 - disable CDP on that interface, but you want to keep CDP enabled on the device - Router(config-if)#
no cdp enable
6 - enables Cisco devices to discover non-Cisco devices – LLDP
7 - disables LLDP globally on a Cisco device - switch(config)#
no lldp run
8 – true about LLDP - Configured on a per-interface basis.
9 - show all non-Cisco devices using LLDP - Router#
show lldp neighbors
10 - default amount of time that a device will hold information about its neighbors using LLDP is 120 seconds - Router(config)#
lldp holdtime [number of seconds]
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