2.1.4.7 Lab - Establishing a Console Session with Tera Term
Lab - Establishing a Console Session with
Tera Term
Topology
Objectives
Part 1: Access a Cisco Switch through
the Serial Console Port
Part 2: Display and Configure Basic
Device Settings
Part 3: (Optional) Access a Cisco
Router Using a Mini-USB Console Cable
Note: Netlab users or other remote
access equipment should complete only Part 2.
Background / Scenario
Various models of Cisco routers and
switches are used in all types of networks. These devices are managed using a
local console connection or a remote connection. Nearly all Cisco devices have
a serial console port to which you can connect. Some newer models, such as the
1941 Integrated Services Router (ISR) G2 used in this lab, also have a USB
console port.
In this lab, you will learn how to access
a Cisco device via a direct local connection to the console port, using the terminal
emulation program called Tera Term. You will also learn how to configure the
serial port settings for the Tera Term console connection. After you have established
a console connection with the Cisco device, you can display or configure device
settings. You will only display settings and configure the clock in this lab.
Note: The routers used with CCNA hands-on labs
are Cisco 1941 ISRs with Cisco IOS Release 15.2(4)M3 (universalk9 image). The switches
used in the labs are Cisco Catalyst 2960s with Cisco IOS Release 15.0(2)
(lanbasek9 image). Other routers, switches, and Cisco IOS versions can be used.
Depending on the model and Cisco IOS version, the commands available and the output
produced might vary from what is shown in the labs. Refer to the Router
Interface Summary Table at the end of the lab for the correct interface
identifiers.
Note: Make sure that the switch and router have been erased and have no
startup configuration. If you are unsure, contact your instructor.
Required Resources
·
1 Router (Cisco 1941 with Cisco
IOS software, release 15.2(4)M3 universal image or comparable)
·
1 Switch (Cisco 2960 with Cisco
IOS Release 15.0(2) lanbasek9 image or comparable)
·
1 PC (Windows 7 or 8 with a terminal
emulation program, such as Tera Term)
·
Rollover (DB-9 to RJ-45)
console cable to configure the switch or router via the RJ-45 console port
·
Mini-USB cable to configure the
router via the USB console port
You will connect a PC to a Cisco switch
using a rollover console cable. This connection will allow you to access the CLI
and display settings or configure the switch.
Step 1:
Connect a Cisco switch and computer
using a rollover console cable.
a.
Connect the rollover console
cable to the RJ-45 console port of the switch.
b.
Connect the other cable end to the
serial COM port on the computer.
Note: Serial COM ports are no longer available on most computers. A
USB-to-DB9 adapter can be used with the rollover console cable for console
connection between the computer and a Cisco device. USB-to-DB9 adapters can be
purchased at any computer electronics store.
Note: If using a USB-to-DB9 adapter to connect to the COM port, you may
be required to install a driver for the adapter provided by the manufacturer of
your computer. To determine the COM port used by the adapter, please see Part 3
Step 4. The correct COM port number is required to connect to the Cisco IOS
device using a terminal emulator in Step 2.
c.
Turn on the Cisco switch and
computer.
Tera Term is a terminal emulation
program. This program allows you to access the terminal output of the switch.
It also allows you to configure the switch.
a.
Start Tera Term by clicking the
Windows Start button located in the
task bar. Locate Tera Term under All Programs.
Note: If the program is not installed on the system, Tera Term can be
downloaded from the following link by selecting Tera Term:
b.
In the New Connection dialog
box, click the Serial radio button. Verify
that the correct COM port is selected and click OK to continue.
c.
From the Tera Term Setup menu, choose the Serial port… to verify the serial settings.
The default parameters for the console port are 9600 baud, 8 data bits, no
parity, 1 stop bit, and no flow control. The Tera Term default settings match
the console port settings for communications with the Cisco IOS switch.
d.
When you can see the terminal
output, you are ready to configure a Cisco switch. The following console
example displays the terminal output of the switch while it is loading.
Part 2:
Display and Configure Basic Device
Settings
In this section, you are introduced to
the user and privileged executive modes. You will determine the IOS version, display
the clock settings, and configure the clock on the switch.
Step 1:
Display the switch IOS image
version.
a.
After the switch has completed
its startup process, the following message is displayed. Enter n to continue.
Would you like to enter the initial configuration
dialog? [yes/no]: n
Note: If you do not see the above message, please contact your
instructor to reset your switch to the initial configuration.
b.
While you are in the user EXEC
mode, display the IOS version for your switch.
Switch> show
version
Cisco IOS Software, C2960 Software
(C2960-LANBASEK9-M), Version 15.0(2)SE, RELEASE SOFTWARE (fc1)
Technical Support:
http://www.cisco.com/techsupport
Copyright (c) 1986-2012 by Cisco Systems,
Inc.
Compiled Sat 28-Jul-12 00:29 by
prod_rel_team
ROM: Bootstrap program is C2960 boot loader
BOOTLDR: C2960 Boot Loader (C2960-HBOOT-M)
Version 12.2(53r)SEY3, RELEASE SOFTWARE (fc1)
Switch uptime is 2 minutes
System returned to ROM by power-on
System image file is "flash://c2960-lanbasek9-mz.150-2.SE.bin"
<output
omitted>
Which IOS image version is currently in
use by your switch?
c3560-advipservicesk9-mz.122-25.SEB2.bin
Step 2:
Configure the clock.
As you learn more about networking, you
will see that configuring the correct time on a Cisco switch can be helpful
when you are troubleshooting problems. The following steps manually configure
the internal clock of the switch.
a.
Display the current clock
settings.
Switch> show
clock
*00:30:05.261 UTC Mon Mar 1 1993
b.
The clock setting is changed from
within the privileged EXEC mode. Enter the privileged EXEC mode by typing enable at the user EXEC mode prompt.
Switch> enable
c.
Configure the clock setting.
The question mark (?) provides help and allows you to determine the expected
input for configuring the current time, date, and year. Press Enter to complete
the clock configuration.
Switch# clock
set ?
hh:mm:ss Current Time
Switch# clock
set 15:08:00 ?
<1-31> Day of the month
MONTH Month of the year
Switch# clock
set 15:08:00 Oct 26 ?
<1993-2035> Year
Switch# clock
set 15:08:00 Oct 26 2012
Switch#
*Oct 26 15:08:00.000: %SYS-6-CLOCKUPDATE:
System clock has been updated from 00:31:43 UTC Mon Mar 1 1993 to 15:08:00 UTC Fri Oct 26
2012, configured from console by console.
d.
Enter the show clock command to verify that the clock setting has updated.
Switch# show
clock
15:08:07.205 UTC Fri Oct 26 2012
Part 3:
(Optional) Access a Cisco
Router Using a Mini-USB Console Cable
If you are using a Cisco 1941 router, or
other Cisco IOS devices with a mini-USB console port, you can access the device
console port using a mini-USB cable connected to the USB port on your computer.
Note: The mini-USB console cable is the same type of mini-USB cables
that are used with other electronics devices, such as USB hard drives, USB
printers, or USB hubs. These mini-USB cables can be purchased from Cisco Systems, Inc. or other third-party
vendors. Please verify that you are using a mini-USB cable, not a micro-USB
cable, to connect to the mini-USB console port on a Cisco IOS device.
Note: You must use either the USB port or the RJ-45 port. Do not use both ports simultaneously.
When the USB port is used, it takes priority over the RJ-45 console port.
Step 1:
Set up the physical connection
with a mini-USB cable.
a.
Connect the mini-USB cable to
the mini-USB console port of the router.
b.
Connect the other cable end to
a USB port on the computer.
c.
Turn on the Cisco router and
computer.
Step 2:
Verify that the USB console is
ready.
If you are using a Microsoft Windows-based
PC and the USB console port LED indicator (labeled EN) does not turn green,
please install the Cisco USB console driver.
A USB driver must be installed prior to
connecting a Microsoft Windows-based PC to a Cisco IOS device with a USB cable.
The driver can be found on www.cisco.com with the related Cisco IOS
device. The USB driver can be downloaded from the following link:
Note: You must have a valid Cisco Connection Online (CCO) account to
download this file.
Note: This link is related to the Cisco 1941 router. However, the USB
console driver is not Cisco IOS device-model specific. This USB console driver
only works with Cisco routers and switches. The computer requires a reboot
after finishing the installation of the USB driver.
Note: After the files are extracted, the folder contains instructions
for installation, removal, and the necessary drivers for different operating
systems and architectures. Please choose the appropriate version for your
system.
When the LED indicator for the USB
console port has turned green, the USB console port is ready for access.
Step 3:
(Optional) Enable the COM port
for the Windows 7 PC.
If you are using a Microsoft Windows 7
PC, you may need to perform the following steps to enable the COM port:
a.
Click the Windows Start icon to access the Control Panel.
b.
Open the Device Manager.
c.
Click the Ports (COM & LPT) tree link to expand it. Right-click the USB Serial Port icon and choose Update Driver Software.
d.
Choose Browse my computer for driver software.
e.
Choose Let me pick from a list of device drivers on my computer and click Next.
f.
Choose the Cisco Serial driver and click Next.
g.
Note the port number assigned
at the top of the window. In this sample, COM 5 is used for communication with
the router. Click Close.
h.
Open Tera Term. Click the Serial radio button and choose the
appropriate serial port, which is Port
COM5: Cisco Serial (COM 5) in this example. This port should now be
available for communication with the router. Click OK.
Reflection
1.
How do you prevent unauthorized
personnel from accessing your Cisco device through the console port?
________________________________Enable password
protection, encrypt/enable secret, and shutdown unused ports____________________________________________________
____________________________________________________________________________________
2.
What are the advantages and
disadvantages of using the serial console connection compared to the USB
console connection to a Cisco router or switch?
__________________Mini usb port is advantages better than from old
system serial console connection __________________________________________________________________
____________________________________________________________________________________
|
Router Interface Summary
|
||||
|
Router Model
|
Ethernet Interface #1
|
Ethernet Interface #2
|
Serial Interface #1
|
Serial Interface #2
|
|
1800
|
Fast Ethernet 0/0 (F0/0)
|
Fast Ethernet 0/1 (F0/1)
|
Serial 0/0/0 (S0/0/0)
|
Serial 0/0/1 (S0/0/1)
|
|
1900
|
Gigabit Ethernet 0/0 (G0/0)
|
Gigabit Ethernet 0/1 (G0/1)
|
Serial 0/0/0 (S0/0/0)
|
Serial 0/0/1 (S0/0/1)
|
|
2801
|
Fast Ethernet 0/0 (F0/0)
|
Fast Ethernet 0/1 (F0/1)
|
Serial 0/1/0 (S0/1/0)
|
Serial 0/1/1 (S0/1/1)
|
|
2811
|
Fast Ethernet 0/0 (F0/0)
|
Fast Ethernet 0/1 (F0/1)
|
Serial 0/0/0 (S0/0/0)
|
Serial 0/0/1 (S0/0/1)
|
|
2900
|
Gigabit Ethernet 0/0 (G0/0)
|
Gigabit Ethernet 0/1 (G0/1)
|
Serial 0/0/0 (S0/0/0)
|
Serial 0/0/1 (S0/0/1)
|
|
Note: To find out how the router is configured, look at the interfaces
to identify the type of router and how many interfaces the router has. There
is no way to effectively list all the combinations of configurations for each
router class. This table includes identifiers for the possible combinations
of Ethernet and Serial interfaces in the device. The table does not include
any other type of interface, even though a specific router may contain one.
An example of this might be an ISDN BRI interface. The string in parenthesis
is the legal abbreviation that can be used in Cisco IOS commands to represent
the interface.
|
||||
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