Packet Tracer - Use TFTP and Flash to Manage Configuration
Files - Physical Mode
Topology
Addressing Table
Device Interface IP Address Subnet Mask Default Gateway
R1 G0/0/1 192.168.1.1 255.255.255.0 N/A
S1 VLAN 1 192.168.1.11 255.255.255.0 192.168.1.1
Server1 F0 192.168.1.3 255.255.255.0 192.168.1.1
Blank Line - no additional information
Objectives
Part 1: Cable the Network and Configure Basic Device Settings
Part 2: Use TFTP to Back Up and Restore the Switch Running Configuration
Part 3: Use TFTP to Back Up and Restore the Router Running Configuration
Part 4: Back Up and Restore Running Configurations Using Router Flash Memory
Background / Scenario
Cisco networking devices are often upgraded or replaced for a number of reasons. It is important to maintain
backups of the latest device configurations, as well as a history of configuration changes. A TFTP server is
often used to back up configuration files and IOS images in production networks. A TFTP server is a
centralized and secure method used to store file backups and restore them as necessary. Using a centralized
TFTP server, you can back up files from many different Cisco devices.
In addition to a TFTP server, most of the current Cisco routers can back up and restore files locally from
CompactFlash (CF) memory or a USB flash drive. The CF is a removable memory module that has replaced
the limited internal flash memory of earlier router models. The IOS image for the router resides in the CF
memory, and the router uses this IOS Image for the boot process. With the larger size of the CF memory,
additional files can be stored for back up purposes. A removable USB flash drive can also be used for back
up purposes.
In this Packet Tracer Physical Mode (PTPM) activity, you will use TFTP server software to back up the
running configuration of Cisco devices to the TFTP server. You will also back up the running configuration to
Flash.
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Packet Tracer - Use TFTP and Flash to Manage Configuration Files - Physical Mode
Part 1: Build the Network and Configure Basic Device Settings
In Part 1, you will cable the network topology and configure basic settings, such as the interface IP addresses
for R1, S1, and Server1.
Note: There are two PCs available so that you can establish a console connection from one PC to the router
and the other PC to the switch. That way, you will not have to change the cables during the activity.
Step 1: Cable the network.
Cable the devices as shown in the topology. Connect a console cable from PC1 to R1. Connect a console
cable from PC2 to S1.
Step 2: Use the CLI tab on the router to configure basic settings for the router.
a. Open a terminal to R1 from PC1. Click PC1 > Desktop tab > Terminal, and then click OK.
Open configuration window
b. Assign a device name to the router.
c. Disable DNS lookup to prevent the router from attempting to translate incorrectly entered commands as
though they were host names.
d. Assign class as the privileged EXEC encrypted password.
e. Assign cisco as the console password and enable login.
f. Assign cisco as the vty password and enable login.
g. Encrypt the plaintext passwords.
h. Create a banner that warns anyone accessing the device that Authorized Users Only are permitted.
i. Configure interfaces as listed in the Addressing Table.
j. Save the running configuration to the startup configuration file.
Note: Use the question mark (?) to help with the correct sequence of parameters needed to execute this
command.
Close configuration window
Step 3: Use the CLI tab on the switch to configure basic settings for the switch.
Open configuration window
a. Open a terminal to S1 from PC2. Click PC2 > Desktop tab > Terminal, and then click OK.
b. Assign a device name to the switch.
c. Disable DNS lookup to prevent the router from attempting to translate incorrectly entered commands as
though they were host names.
d. Assign class as the privileged EXEC encrypted password.
e. Assign cisco as the console password and enable login.
f. Assign cisco as the vty password and enable login.
g. Encrypt the plaintext passwords.
h. Shut down all unused interfaces.
i. Configure interface VLAN 1 as specified in the Addressing Table.
j. Save the running configuration to the startup configuration file.
Note: Use the question mark (?) to help with the correct sequence of parameters needed to execute this
command.
Close configuration window
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Packet Tracer - Use TFTP and Flash to Manage Configuration Files - Physical Mode
Step 4: Using the Desktop tab, configure the IP addressing information for Server1 and verify
connectivity with S1 and R1.
a. Ping from Server1 to S1.
b. Ping from Server1 to R1.
If the pings are not successful, troubleshoot the basic device configurations before continuing.
Part 2: Use TFTP to Back Up and Restore the Switch Running Configuration
In this part, you will back up and restore the configuration for S1 to and from a TFTP server.
Step 1: Start the TFTP server application on Server1.
From the Services tab of Server1, turn on the TFTP application.
The TFTP application uses the UDP Layer 4 transport protocol, which is encapsulated in an IP packet. For
TFTP file transfers to function, there must be Layer 1 and 2 (Ethernet, in this case) and Layer 3 (IP)
connectivity between the TFTP client and the TFTP server. The LAN topology in this activity uses only
Ethernet at Layers 1 and 2. However, TFTP transfers can also be accomplished over WAN links that use
other Layer 1 physical links and Layer 2 protocols. As long as there is IP connectivity between the client and
server, as demonstrated by the output of the ping command, the TFTP transfer can take place. If the pings
are not successful, troubleshoot the basic device configurations before continuing.
Note: A common misconception is that you can TFTP a file over the console connection. This is not the case
because the console connection does not use IP. The TFTP transfer can be initiated from the client device
(router or switch) using the console connection, but there must be IP connectivity between the client and
server for the file transfer to take place.
Step 2: Explore the copy command on a Cisco device.
a. From the privileged EXEC mode prompt of S1, enter copy ? to display the options for source or “from”
location and other available copy options. You can specify flash: or flash0: as the source. However, if
you simply provide a filename as the source, flash0: is assumed and is the default. Note that running-
config is also an option for the source location.
Open configuration window
S1# copy ?
flash: Copy from flash: file system
ftp: Copy from ftp: file system
running-config Copy from current system configuration
scp: Copy from scp: file system
startup-config Copy from startup configuration
tftp: Copy from tftp: file system
S1# copy
b. Use the ? to display the destination options after a source file location is chosen. The flash: file system
for S1 is the source file system in this example.
S1# copy flash: ?
ftp: Copy to ftp: file system
running-config Update (merge with) current system configuration
scp: Copy to scp: file system
startup-config Copy to startup configuration
tftp: Copy to tftp: file system
S1# copy flash:
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Packet Tracer - Use TFTP and Flash to Manage Configuration Files - Physical Mode
Step 3: Transfer the running-config file from S1 to the TFTP server on Server1.
a. From the privileged EXEC mode of S1, enter the copy running-config tftp: command. Provide the
remote host address of the TFTP server, 192.168.1.3. Press Enter to accept the default destination
filename (s1-confg) or provide your own filename. The exclamation marks (!!) indicate the transfer
process is in progress and is successful.
S1# copy running-config tftp:
Address or name of remote host []? 192.168.1.3
Destination filename [S1-confg]?
Writing running-config...!!
[OK - 1549 bytes]
1549 bytes copied in 0 secs
S1#
b. Check the directory in the TFTP application on Server1 to verify that the file was transferred successfully.
Click Server1 > Services tab > TFTP. You should see the S1-confg file listed at the top of the File list.
Step 4: Modify the running configuration on the switch and copy the running configuration file
from the TFTP server to the switch.
a. On S1, create a banner that warns anyone accessing the device that unauthorized access is prohibited.
b. From the privileged EXEC mode on S1, enter the copy tftp running-config command. Provide the
remote host address of the TFTP server, 192.168.1.3. Enter the filename, S1-confg.txt. The exclamation
mark (!) indicates the transfer process is in progress and is successful.
S1# copy tftp: running-config
Address or name of remote host []? 192.168.1.3
Source filename []? S1-confg
Destination filename [running-config]?
Accessing tftp://192.168.1.3/S1-confg...
Loading S1-confg from 192.168.1.3: !
[OK - 1525 bytes]
1525 bytes copied in 0 secs
S1#
%SYS-5-CONFIG_I: Configured from console by console
S1#
c. Enter the show running-config command to examine running configuration file.
S1# show running-config
<output omitted>
interface Vlan1
ip address 192.168.1.11 255.255.255.0
!
ip default-gateway 192.168.1.1
!
banner motd ^CAuthorized Users Only! ^C
!
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Packet Tracer - Use TFTP and Flash to Manage Configuration Files - Physical Mode
!
!
line con 0
password 7 0822455D0A16
login
!
<output omitted>
S1#
close configuration window
Note: Notice that the banner motd command was added after the running configuration was copied to
the TFTP server. It is still present after the running configuration was copied back from the TFTP server.
If you do not erase the startup configuration, the procedure merges the running-config from the TFTP
server with the current running-config in the switch or router. If changes were made to the current
running-config, the commands in the TFTP copy are added. Alternatively, if the same command is issued,
it updates the corresponding command in the current running-config of the switch or router.
Part 3: Use TFTP to Back Up and Restore the Router Running Configuration
The backup and restore procedure from Part 2 can also be performed with a router. In Part 3, the running
configuration file will be backed up and restored using a TFTP server.
Step 1: Transfer the running configuration from R1 to the TFTP server.
Open configuration window
a. Open the Terminal program on PC1 for R1.
b. From the privileged EXEC mode on R1, enter the copy running-config tftp command. Provide the
remote host address of the TFTP server, 192.168.1.3, and accept R1-confg as the default filename.
c. Verify that the file has been transferred to the TFTP server.
Step 2: Restore the running configuration file to the router.
Note: If you want to completely replace the current running-config with the one from the TFTP server, you
must erase the router startup-config and reload the device. You will then need to configure the G0/0/1
interface address, so there is IP connectivity between the TFTP server and the router.
a. Erase the startup-config file on the router.
b. Reload the router.
Note: Your completion percentage will temporarily be lower until you restore the configuration.
c. Configure the G0/0/1 interface on the router with an IP address 192.168.1.1. Wait until the Spanning Tree
Protocol (STP) converges on S1.
d. Verify connectivity between the router and Server1. You may need to ping a few times before
connectivity is re-established.
e. Use the copy command to transfer the R1-confg file from the TFTP server to the router. Use running-
config as the destination.
f. Verify that the router has updated the running configuration. The router prompt should be changed back
to R1# and your completion percentage should reflect that all your configurations are now restored.
Close configuration window
Part 4: Back Up and Restore Configurations Using Router Flash Memory
Current generation Cisco routers do not have internal flash memory. The flash memory for these routers uses
CompactFlash (CF) memory. The use of CF memory allows for more available flash memory and easier
upgrades without the need to open the router case. Besides storing the necessary files, such as IOS images,
the CF memory can store other files, such as a copy of the running configuration.
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Packet Tracer - Use TFTP and Flash to Manage Configuration Files - Physical Mode
Note: If the router does not use CF, the router may not have enough flash memory for storing the backup
copy of running configuration file. You should still read through the instructions and become familiar with the
commands.
Step 1: Display the router file systems.
The show file systems command displays the available file systems on the router. The flash0: file system is
the default file system on this router as indicated by the asterisk (*) symbol (at the beginning of the line). The
flash0: file system can also be referenced using the name flash:. The total size of the flash0: is
approximately 3GB with about 2.5GB available. Currently flash0: and nvram: are the only available file
systems.
Note: Verify that there is at least 1 MB (1,048,576 bytes) of free space. You can determine the size of
flash memory and space available using the show flash or dir flash: command at the privileged EXEC
prompt.
Open configuration window
R1# show file systems
File Systems:
Size(b) Free(b) Type Flags Prefixes
* 3249049600 2761893177 flash rw flash:
29688 23590 nvram rw nvram:
Question:
Where is the startup-config file located?
Type your answers here.
Step 2: Copy the router running configuration to flash.
A file can be copied to flash by using the copy command at the privileged EXEC prompt. In this example, the
file is copied into flash0: because there is only one flash drive available as displayed in the previous step,
and it is also the default file system. The R1-running-config-backup file is used as the filename for the
backup running configuration file.
Note: Remember that filenames are case-sensitive in the IOS file system.
a. Copy the running configuration to flash memory.
R1# copy running-config flash:
Destination filename [running-config]? R1-running-config-backup
Building configuration...
[OK]
R1#
b. Use dir command to verify that the running-config has been copied to flash.
R1# dir flash:
Directory of flash:/
6 -rw- 732 <no date> R1-running-config-backup
3 -rw- 486899872 <no date> isr4300-universalk9.03.16.05.S.155-3.S5-
ext.SPA.bin
2 -rw- 28282 <no date> sigdef-category.xml
1 -rw- 227537 <no date> sigdef-default.xml
3249049600 bytes total (2761893177 bytes free)
c. Use the more command to view the running-config file in flash memory. Examine the file output and scroll
to the Interface section. Notice the no shutdown command is not included with the GigabitEthernet0/1
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Packet Tracer - Use TFTP and Flash to Manage Configuration Files - Physical Mode
interface. The interface is shut down when this file is used to update the running configuration on the
router.
R1# more flash:R1-running-config-backup
<output omitted>
interface GigabitEthernet0/1
ip address 192.168.1.1 255.255.255.0
duplex auto
speed auto
<output omitted>
Step 3: Erase the startup configuration and reload the router.
a. Erase the startup-config file on the router.
b. Reload the router.
Note: Your completion percentage will temporarily be lower until you restore the configuration.
c. Verify the router has the default initial configuration.
Step 4: Restore the running configuration from flash.
a. Copy the saved running-config file from flash to update the running-config.
Router# copy flash: running-config
Source filename []? R1-running-config-backup
Destination filename [running-config]?
732 bytes copied in 0.416 secs (1759 bytes/sec)
R1#
%SYS-5-CONFIG_I: Configured from console by console
R1#
b. Use the show ip interface brief command to view the status of the interfaces.
R1# show ip interface brief
Interface IP-Address OK? Method Status Protocol
GigabitEthernet0/0/0 unassigned YES NVRAM administratively down down
GigabitEthernet0/0/1 192.168.1.1 YES manual administratively down down
Vlan1 unassigned YES NVRAM administratively down down
R1#
c. In Packet Tracer, the G0/0/1 interface will be administratively down. Enter interface configuration mode
and reactivate the interface. Your completion percentage should now be 100%.
End of document
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