![Erasing and Reloading the Switch
For the majority of the labs in CCNA 3 and CCNA 4 it is necessary to start with an unconfigured switch. Use of a switch with an existing configuration may produce unpredictable results. These instructions allow preparation of the switch prior to performing the lab so previous configuration options do not interfere. The following is the procedure for clearing out previous configurations and starting with an unconfigured switch. Instructions are provided for the 2900, 2950, and 1900 Series switches.
2900 and 2950 Series Switches
1. Enter into the Privileged EXEC mode by typing enable.
Switch>enable
If prompted for a password, enter class, if that does not work, ask the instructor.
2. Remove the VLAN database information file.
Switch#delete flash:vlan.dat
Delete filename [vlan.dat]?[Enter]
Delete flash:vlan.dat? [confirm] [Enter]
If there was no VLAN file, this message is displayed.
%Error deleting flash:vlan.dat (No such file or directory)
3. Remove the switch startup configuration file from NVRAM.
Switch#erase startup-config
The responding line prompt will be:
Erasing the nvram filesystem will remove all files! Continue? [confirm]
Press Enter to confirm.
The response should be:
Erase of nvram: complete
4. Check that VLAN information was deleted.
Verify that the VLAN configuration was deleted in Step 2 using the show vlan command. If previous VLAN configuration information (other than the default management VLAN 1) is still present it will be necessary to power cycle the switch (hardware restart) instead of issuing the reload command. To power cycle the switch, remove the power cord from the back of the switch or unplug it. Then plug it back in.
If the VLAN information was successfully deleted in Step 2, go to Step 5 and restart the switch using the reload command.
5. Software restart (using the reload command)
7 - 8 CCNA 3: Switching Basics and Intermediate Routing v 3.1 - Lab 9.1.5b Copyright 2003, Cisco Systems, Inc.](https://image.slidesharecdn.com/ccna3lab915ben-141213100442-conversion-gate02/85/Ccna3-lab-9_1_5b_en-7-320.jpg)
![Note: This step is not necessary if the switch was restarted using the power cycle method.
a. At the Privileged EXEC mode enter the command reload.
Switch(config)#reload
The responding line prompt will be:
System configuration has been modified. Save? [yes/no]:
b. Type n and then press Enter.
The responding line prompt will be:
Proceed with reload? [confirm] [Enter]
The first line of the response will be:
Reload requested by console.
After the switch has reloaded, the line prompt will be:
Would you like to enter the initial configuration dialog? [yes/no]:
c. Type n and then press Enter.
The responding line prompt will be:
Press RETURN to get started! [Enter]
1900 Series Switches
1. Remove VLAN Trunking Protocol (VTP) information.
#delete vtp
This command resets the switch with VTP parameters set to factory defaults.
All other parameters will be unchanged.
Reset system with VTP parameters set to factory defaults, [Y]es or [N]o?
Enter y and press Enter.
2. Remove the switch startup configuration from NVRAM.
#delete nvram
This command resets the switch with factory defaults. All system parameters will revert to their default factory settings. All static and dynamic addresses will be removed.
Reset system with factory defaults, [Y]es or [N]o?
Enter y and press Enter.
8 - 8 CCNA 3: Switching Basics and Intermediate Routing v 3.1 - Lab 9.1.5b Copyright 2003, Cisco Systems, Inc.](https://image.slidesharecdn.com/ccna3lab915ben-141213100442-conversion-gate02/85/Ccna3-lab-9_1_5b_en-8-320.jpg)
Ccna3 lab 9_1_5b_en
- 1. Lab 9.1.5b Trunking with 802.1q Objective • Create a basic switch configuration and verify it. • Create multiple VLANs, name them, and assign multiple member ports to them. • Create an 802.1q trunk line between the two switches to allow communication between paired VLANs. • Test the VLANs functionality by moving a workstation from one VLAN to another. Background/Preparation Trunking changes the formatting of the packets. The ports need to be in agreement as to which format is being used to transmit data on the trunk or no data will be passed. If there is different trunking encapsulation on the two ends of the link they will not able to communicate. Similar situation will occur if one of the ports is configured in trunking mode (unconditionally) and the other one is in access mode (unconditionally). When managing a switch, the Management Domain is always VLAN 1. The Network Administrator's workstation must have access to a port in the VLAN 1 Management Domain. All ports are assigned to VLAN 1 by default. This lab will also help demonstrate how VLANs can be used to separate traffic and reduce broadcast domains. 1 - 8 CCNA 3: Switching Basics and Intermediate Routing v 3.1 - Lab 9.1.5b Copyright 2003, Cisco Systems, Inc.
- 2. Cable a network similar to one of the diagram. The configuration output used in this lab is produced from 2950 series switch. Any other switch used may produce different output. The following steps are intended to be executed on each switch unless specifically instructed otherwise. Start a HyperTerminal session. Note: Go to the erase and reload instructions at the end of this lab. Perform those steps on all switches in this lab assignment before continuing. Step 1 Configure the switch Configure the Hostname, access and command mode passwords, as well as the management LAN settings. These values are shown in the chart. If problems occur while performing this configuration, refer to the “Basic Switch Configuration lab”. Do not configure VLANs and trunking yet. Step 2 Configure the hosts attached to the switch Configure the IP address, mask, and default gateway on each host. Be sure to choose addresses that are on the same subnet as the switch. Step 3 Verify connectivity a. To verify that the host and switch are correctly configured, ping the switch from the hosts. b. Were the pings successful? __________________________________________________ c. If the answer is no, troubleshoot the host and switches configurations. Step 4 Display the VLAN interface information On Switch_A, type the command show vlan at the Privileged EXEC prompt as follows: Switch_A#show vlan Note: There should be an entry for VLAN 1 and the default VLANs (1002 +). If other VLANs appear, they could be deleted as instructed in Step 2 of the Erasing and Reloading instructions at the end of this lab or refer to the Lab Exercise: Deleting VLAN Configurations. Step 5 Create and name three VLANs Enter the following commands to create and name three VLANs: Switch_A#vlan database Switch_A(vlan)#vlan 10 name Accounting Switch_A(vlan)#vlan 20 name Marketing Switch_A(vlan)#vlan 30 name Engineering Switch_A(vlan)#exit Use the show vlan command to verify that the VLANs have been created correctly. Step 6 Assign ports to a VLAN 10 Assigning ports to VLANs must be done from the interface mode. Enter the following commands to add ports 0/4 to 0/6 to VLAN 10: Switch_A#configure terminal Switch_A(config)#interface fastethernet 0/4 Switch_A(config-if)#switchport mode access Switch_A(config-if)#switchport access vlan 10 2 - 8 CCNA 3: Switching Basics and Intermediate Routing v 3.1 - Lab 9.1.5b Copyright 2003, Cisco Systems, Inc.
- 3. Switch_A(config-if)#interface fastethernet 0/5 Switch_A(config-if)#switchport mode access Switch_A(config-if)#switchport access vlan 10 Switch_A(config-if)#interface fastethernet 0/6 Switch_A(config-if)#switchport mode access Switch_A(config-if)#switchport access vlan 10 Switch_A(config-if)#end Step 7 Assign ports to VLAN 20 Enter the following commands to add ports 0/7 to 0/9 to VLAN 20: Switch_A#configure terminal Switch_A(config)#interface fastethernet 0/7 Switch_A(config-if)#switchport mode access Switch_A(config-if)#switchport access vlan 20 Switch_A(config-if)#interface fastethernet 0/8 Switch_A(config-if)#switchport mode access Switch_A(config-if)#switchport access vlan 20 Switch_A(config-if)#interface fastethernet 0/9 Switch_A(config-if)#switchport mode access Switch_A(config-if)#switchport access vlan 20 Switch_A(config-if)#end Step 8 Assign ports to VLAN 30 Enter the following commands to add ports 0/10 to 0/12 to VLAN 30: Switch_A#configure terminal Switch_A(config)#interface fastethernet 0/10 Switch_A(config-if)#switchport mode access Switch_A(config-if)#switchport access vlan 30 Switch_A(config-if)#interface fastethernet 0/11 Switch_A(config-if)#switchport mode access Switch_A(config-if)#switchport access vlan 30 Switch_A(config-if)#interface fastethernet 0/12 Switch_A(config-if)#switchport mode access Switch_A(config-if)#switchport access vlan 30 Switch_A(config-if)#end Step 9 Create VLANs on Switch_B Repeat Steps 5 through 9 on Switch_B to create its VLANs Step 10 Display the VLAN interface information a. On both switches, type the command show vlan at the Privileged EXEC prompt as follows: Switch_A#show vlan b. Are ports 0/10 through 0/12 assigned to VLAN 30? __________________________________________________________________________ 3 - 8 CCNA 3: Switching Basics and Intermediate Routing v 3.1 - Lab 9.1.5b Copyright 2003, Cisco Systems, Inc.
- 4. Step 11 Test the VLANs Ping from the host in Switch_A port 0/12 to the host in Switch_B port 0/12. a. Was the ping successful? ___________________________________________________ b. Why? __________________________________________________________________ Ping from the host in Switch_A port 0/12 to the switch IP 192.168.1.2. c. Was the ping successful? ___________________________________________________ d. Why? __________________________________________________________________ Step 12 Create the trunk On both switches, Switch_A and Switch_B, type the following command at the fastethernet 0/1 interface command prompt. Note that it is not necessary to specify the encapsulation on a 2950, since it only supports 802.1Q. Switch_A(config)#interface fastethernet 0/1 Switch_A(config-if)#switchport mode trunk Switch_A(config-if)#end Switch_B(config)#interface fastethernet 0/1 Switch_B(config-if)#switchport mode trunk Switch_B(config-if)#end 2900: Switch_A(config)#interface fastethernet0/1 Switch_A(config-if)#switchport mode trunk Switch_A(config-if)#switchport trunk encapsulation dot1q S witch_A(config-if)#end Switch_B(config)#interface fastethernet0/1 Switch_B(config-if)#switchport mode trunk Switch_B(config-if)#switchport trunk encapsulation dot1q Switch_B(config-if)#end Step 13 Verify the trunk a. To verify that port Fast Ethernet 0/1 has been established as a trunk port, type show interface fastethernet 0/1 switchport at the Privileged EXEC mode prompt. b. What type of trunking encapsulation is shown on the output results? __________________________________________________________________________ c. According to the output with show interface fastethernet 0/1 switchport on Switch_B, is there a difference from the Administrative Trunking Encapsulation from the Operational Trunking Encapsulation? __________________________________________________________________________ d. On the fragment “Trunking VLANs Enable” from the output, what does the word “ALL” mean? __________________________________________________________________________ e. What would happen if the two ports of the trunk were using different encapsulation? _________ f. Explain _________________________________________________________________ 4 - 8 CCNA 3: Switching Basics and Intermediate Routing v 3.1 - Lab 9.1.5b Copyright 2003, Cisco Systems, Inc.
- 5. Step 14 Test the VLANS and the trunk Ping from the host in Switch_A port 0/12 to the host in Switch_B port 0/12. a. Was the ping successful? ___________________________________________________ b. Why? __________________________________________________________________ Ping from the host in Switch_A port 0/12 to the switch IP 192.168.1.2. c. Was the ping successful? ___________________________________________________ d. Why? __________________________________________________________________ Step 15 Move host. Move the host in Switch_A from port 0/12 to port 0/8. Wait until the port LED goes green and then go to the next step. Step 16 Test the VLANS and the trunk Ping from the host in Switch_A port 0/8 to the host in Switch_B port 0/12. a. Was the ping successful? ___________________________________________________ b. Why? __________________________________________________________________ Ping from the host in Switch_A port 0/8 to the switch IP 192.168.1.2. c. Was the ping successful? ___________________________________________________ d. Why? __________________________________________________________________ Step 17 Move host Move the host in Switch_B from port 0/12 to port 0/7. Wait until the port LED goes green and then go to the next step. Step 18 Test the VLANS and the trunk Ping from the host in Switch_A port 0/8 to the host in Switch_B port 0/7. a. Was the ping successful? ___________________________________________________ b. Why? __________________________________________________________________ Ping from the host in Switch_A port 0/8 to the switch IP 192.168.1.2. c. Was the ping successful? ___________________________________________________ d. Why? __________________________________________________________________ Step 19 Move hosts Move the host in Switch_A from port 0/8 to port 0/2. Wait until the port LED goes green and then go to the next step. Step 20 Test the VLANS and the trunk Ping from the host in Switch_A port 0/2 to the host in Switch_B port 0/7. a. Was the ping successful? ___________________________________________________ Ping from the host in Switch_A port 0/2 to the switch IP 192.168.1.2. 5 - 8 CCNA 3: Switching Basics and Intermediate Routing v 3.1 - Lab 9.1.5b Copyright 2003, Cisco Systems, Inc.
- 6. b. Was the ping successful? ___________________________________________________ c. Why? __________________________________________________________________ Step 21 Move host Move the host in Switch_B from port 0/7 to port 0/3. Wait until the port LED goes green and then go to the next step. Step 22 Test the VLANS and the trunk Ping from the host in Switch_A port 0/2 to the host in Switch_B port 0/3. a. Was the ping successful? ___________________________________________________ b. Why? __________________________________________________________________ Ping from the host in Switch_B port 0/3 to the switch IP 192.168.1.2. c. Was the ping successful? ___________________________________________________ d. Why? __________________________________________________________________ Ping from the host in Switch_B port 0/3 to the switch IP 192.168.1.3. e. Was the ping successful? ___________________________________________________ f. Why? __________________________________________________________________ g. What conclusions can be drawn from the testing that was just performed in regards to VLAN membership and VLANs across a trunk? __________________________________________________________________________ __________________________________________________________________________ __________________________________________________________________________ Once the steps are complete, logoff by typing exit, and turn all the devices off. Then remove and store the cables and adapter. 6 - 8 CCNA 3: Switching Basics and Intermediate Routing v 3.1 - Lab 9.1.5b Copyright 2003, Cisco Systems, Inc.
- 7. Erasing and Reloading the Switch For the majority of the labs in CCNA 3 and CCNA 4 it is necessary to start with an unconfigured switch. Use of a switch with an existing configuration may produce unpredictable results. These instructions allow preparation of the switch prior to performing the lab so previous configuration options do not interfere. The following is the procedure for clearing out previous configurations and starting with an unconfigured switch. Instructions are provided for the 2900, 2950, and 1900 Series switches. 2900 and 2950 Series Switches 1. Enter into the Privileged EXEC mode by typing enable. Switch>enable If prompted for a password, enter class, if that does not work, ask the instructor. 2. Remove the VLAN database information file. Switch#delete flash:vlan.dat Delete filename [vlan.dat]?[Enter] Delete flash:vlan.dat? [confirm] [Enter] If there was no VLAN file, this message is displayed. %Error deleting flash:vlan.dat (No such file or directory) 3. Remove the switch startup configuration file from NVRAM. Switch#erase startup-config The responding line prompt will be: Erasing the nvram filesystem will remove all files! Continue? [confirm] Press Enter to confirm. The response should be: Erase of nvram: complete 4. Check that VLAN information was deleted. Verify that the VLAN configuration was deleted in Step 2 using the show vlan command. If previous VLAN configuration information (other than the default management VLAN 1) is still present it will be necessary to power cycle the switch (hardware restart) instead of issuing the reload command. To power cycle the switch, remove the power cord from the back of the switch or unplug it. Then plug it back in. If the VLAN information was successfully deleted in Step 2, go to Step 5 and restart the switch using the reload command. 5. Software restart (using the reload command) 7 - 8 CCNA 3: Switching Basics and Intermediate Routing v 3.1 - Lab 9.1.5b Copyright 2003, Cisco Systems, Inc.
- 8. Note: This step is not necessary if the switch was restarted using the power cycle method. a. At the Privileged EXEC mode enter the command reload. Switch(config)#reload The responding line prompt will be: System configuration has been modified. Save? [yes/no]: b. Type n and then press Enter. The responding line prompt will be: Proceed with reload? [confirm] [Enter] The first line of the response will be: Reload requested by console. After the switch has reloaded, the line prompt will be: Would you like to enter the initial configuration dialog? [yes/no]: c. Type n and then press Enter. The responding line prompt will be: Press RETURN to get started! [Enter] 1900 Series Switches 1. Remove VLAN Trunking Protocol (VTP) information. #delete vtp This command resets the switch with VTP parameters set to factory defaults. All other parameters will be unchanged. Reset system with VTP parameters set to factory defaults, [Y]es or [N]o? Enter y and press Enter. 2. Remove the switch startup configuration from NVRAM. #delete nvram This command resets the switch with factory defaults. All system parameters will revert to their default factory settings. All static and dynamic addresses will be removed. Reset system with factory defaults, [Y]es or [N]o? Enter y and press Enter. 8 - 8 CCNA 3: Switching Basics and Intermediate Routing v 3.1 - Lab 9.1.5b Copyright 2003, Cisco Systems, Inc.