Lab – Configure Extended VLANs, VTP, and DTP

Topology

Addressing Table

Table Heading Interface IP Address Subnet Mask

S1 VLAN 99 192.168.99.1 255.255.255.0
S2 VLAN 99 192.168.99.2 255.255.255.0
S3 VLAN 99 192.168.99.3 255.255.255.0
PC-A NIC 192.168.10.1 255.255.255.0
PC-B NIC 192.168.20.1 255.255.255.0
PC-C NIC 192.168.10.2 255.255.255.0

Objectives
Part 1: Configure VTP
Part 2: Configure DTP
Part 3: Add VLANs and Assign Ports
Part 4: Configure Extended VLAN

Background / Scenario
It can become challenging to manage VLANs and trunks in a network, as the number of switches increases.
VLAN trunking protocol (VTP) allows a network administrator to automate the management of VLANs.
Automated trunk negotiation between network devices is managed by the Dynamic Trunking Protocol (DTP).
DTP is enabled by default on Catalyst 2960 and Catalyst 3560 switches.
In this lab, you will configure trunk links between the switches. You will also configure a VTP server and VTP
clients in the same VTP domain. Furthermore, you will configure an extended VLAN on one of the switches,
assign ports to VLANs and verify end-to-end connectivity within the same VLAN.

© 2017 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public. Page 1 of 8

Switches S1 and S3 will be configure as clients. S1(config)# vtp password cisco Setting device VTP password to cisco c. Depending on the model and Cisco IOS version. This document is Cisco Public. All rights reserved. They will be in the CCNA VTP domain using the password cisco.0(2) (lanbasek9 image). Other switches and Cisco IOS versions can be used.193: %SW_VLAN-6-VTP_DOMAIN_NAME_CHG: VTP domain name changed to CCNA. S2 will be configured as the server. If you are unsure. S2(config)# vtp password cisco Setting device VTP password to cisco b. and DTP Note: The switches used are Cisco Catalyst 2960s with Cisco IOS Release 15. contact your instructor. S3# show vtp status VTP Version capable : 1 to 3 VTP version running : 1 VTP Domain Name : CCNA VTP Pruning Mode : Disabled VTP Traps Generation : Disabled © 2017 Cisco and/or its affiliates. Configure S1 and S3 as VTP clients in the CCNA VTP domain using cisco as the VTP password. S2(config)# vtp domain CCNA Changing VTP domain name from NULL to CCNA S2(config)# *Mar 1 00:03:44. Note: Make sure that the switches have been erased and have no startup configurations. a.0(2) lanbasek9 image or comparable)  3 PCs (Windows 7 or 8 with terminal emulation program.193: %SW_VLAN-6-VTP_DOMAIN_NAME_CHG: VTP domain name changed to CCNA. such as Tera Term)  Console cables to configure the Cisco IOS devices via the console ports  Ethernet cables as shown in the topology Part 1: Configure VTP All the switches will be configured to use VTP for VLAN updates. The VTP status for S3 is displayed below. Required Resources  3 Switches (Cisco 2960 with Cisco IOS Release 15. VTP configurations are displayed below. the commands available and output produced might vary from what is shown in the labs. Configure S2 as a VTP server in the CCNA VTP domain using cisco as the VTP password. S2(config)# vtp mode server Device mode already VTP Server for VLANS. Page 2 of 8 . Verify VTP configurations by entering the show vtp status command on all switches. S1(config)# vtp domain CCNA Changing VTP domain name from NULL to CCNA S1(config)# *Mar 1 00:03:44. VTP.Lab – Configure Extended VLANs. S1(config)# vtp mode client Device mode VTP client for VLANS.

Page 3 of 8 . changed state to down *Mar 1 00:30:48. Enter the show interfaces f0/1 switchport command on S1 and S2. only one side of the link needs to be configured as dynamic desirable.082: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/1. configure a dynamic trunk link between S1 and S2. This document is Cisco Public.1q trunking 1 Port Vlans allowed on trunk Fa0/1 1-4094 Port Vlans allowed and active in management domain Fa0/1 1 Port Vlans in spanning tree forwarding state and not pruned Fa0/1 none S2# show interfaces trunk Port Mode Encapsulation Status Native vlan Fa0/1 auto 802. In interface configuration mode. Because the default mode is dynamic auto. S1(config)# interface f0/1 S1(config-if)# switchport mode dynamic desirable S1(config-if)# *Mar 1 00:30:45. a. VTP. Verify trunking link between S1 and S2 using the show interfaces trunk command.96d2. S1# show interfaces trunk Port Mode Encapsulation Status Native vlan Fa0/1 desirable 802.0 at 0-0-00 00:00:00 Feature VLAN: -------------- VTP Operating Mode : Client Maximum VLANs supported locally : 255 Number of existing VLANs : 5 Configuration Revision : 0 MD5 digest : 0x8B 0x58 0x3D 0x9D 0x64 0xBE 0xD5 0xF6 0x62 0xCB 0x4B 0x50 0xE5 0x9C 0x6F 0xF6 Part 2: Configure DTP Step 1: Configure dynamic trunk links between S1 and S2. All rights reserved.102: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/1.1q trunking 1 © 2017 Cisco and/or its affiliates.0. changed state to up c.Lab – Configure Extended VLANs.3580 Configuration last modified by 0.0. and DTP Device ID : 0cd9. What is the administrative and operational mode of switchport f0/1? b.

Lab – Configure Extended VLANs. Page 4 of 8 . a. S1(config)# vlan 10 Were you able to create VLAN 10 on S1? Explain. Between S1 and S3. Verify the trunks using show interfaces trunk command on S1. VTP. a. and DTP Port Vlans allowed on trunk Fa0/1 1-4094 Port Vlans allowed and active in management domain Fa0/1 1 Port Vlans in spanning tree forwarding state and not pruned Fa0/1 1 Step 2: Configure static trunk link between S1 and S3. add VLAN 10. S1# show interface trunk Port Mode Encapsulation Status Native vlan Fa0/1 desirable 802. This document is Cisco Public.1q trunking 1 Port Vlans allowed on trunk Fa0/1 1-4094 Fa0/3 1-4094 Port Vlans allowed and active in management domain Fa0/1 1 Fa0/3 1 Port Vlans in spanning tree forwarding state and not pruned Fa0/1 none Fa0/3 none c.1q trunking 1 Fa0/3 on 802. On S1. S1(config)# interface f0/3 S1(config-if)# switchport mode trunk b. configure a static trunk link using the switchport mode trunk command in the interface configuration mode for port F0/3. Record the commands you used to create the static trunk. d. Configure a permanent trunk between S2 and S3. All rights reserved. Part 3: Add VLANs and Assign Ports Step 1: Add VLANs on the switches. © 2017 Cisco and/or its affiliates.

Gi0/1. Fa0/14 Fa0/15. Fa0/24.Lab – Configure Extended VLANs. All rights reserved. Fa0/17.------------------------------- 1 default active Fa0/2. Fa0/13. This document is Cisco Public. add the following VLANs. you will associate ports to VLANs and configure IP addresses according to the table below. Because S2 is configured as a VTP server. In this step. Fa0/12. Fa0/16. VTP. Gi0/2 10 Red active 20 Blue active 30 Yellow active 99 Management active <output omitted> Step 2: Verify VTP updates on S1 and S3. and DTP b. Fa0/5. What show commands did you use to verify the VTP updates on S1 and S3? Step 3: Assign ports to VLANs. Fa0/21. Fa0/8. S1 and S3 should learn and implement the VLAN information from S2. Fa0/10 Fa0/11. On S2. Fa0/9. © 2017 Cisco and/or its affiliates.-------------------------------. VLAN Name 10 Red 20 Blue 30 Yellow 99 Management S2(config)# vlan 10 S2(config-vlan)# name Red S2(config-vlan)# vlan 20 S2(config-vlan)# name Blue S2(config-vlan)# vlan 30 S2(config-vlan)# name Yellow S2(config-vlan)# vlan 99 S2(config-vlan)# name Management S2(config-vlan)# end S2# show vlan brief VLAN Name Status Ports ---. Fa0/18 Fa0/19. and S1 and S3 are configured as VTP clients.--------. Fa0/4. Page 5 of 8 . Fa0/22 Fa0/23. Fa0/6 Fa0/7. Fa0/20.

assign an IP address to the SVI for VLAN 99 according to the Addressing Table and activate the interface. S1(config)# exit © 2017 Cisco and/or its affiliates. d. and DTP Port Assignment VLAN Attached PC IP Address and Prefix S1 F0/6 VLAN 10 PC-A: 192. Assign the VLAN according to the table above. VTP must be configured in transparent mode. Because the extended VLANs cannot be managed with VTP.Lab – Configure Extended VLANs. Ping PC-A from PC-C. a. Assign the IP addresses to the PCs according to the table above. set VTP mode to transparent.168. S1(config)# interface vlan 99 S1(config-if)# ip address 192.1 255. S1(config)# interface f0/6 S1(config-if)# switchport mode access S1(config-if)# switchport access vlan 10 b. Ping PC-A from S1.20. configure F0/6 to access mode and assign F0/6 to VLAN 10. you will change the VTP mode on S1 to transparent and create an extended VLAN on S1. Ping S1 from S2.168. Step 1: Configure VTP mode to transparent on S1. VTP. S1(config)# vtp mode transparent Setting device to VTP Transparent mode for VLANS.255.10.255. c. Was it successful? Explain. Page 6 of 8 . a. Step 5: Verify end-to-end connectivity a.168. Was it successful? Explain.2 /24 a.1 / 24 S2 F0/18 VLAN 20 PC-B: 192. for S2 and S3. On switch S1. In this part.168. c.99. Repeat step a.0 S1(config-fi)# no shutdown b.10. On S1. Repeat the procedure for switchport F0/18 on S2 and S3. Step 4: Configure IP addresses on the switches. Was it successful? Explain. Ping PC-A from PC-B. Part 4: Configure Extended VLAN An extended VLAN is a VLAN between 1025 and 4096. All rights reserved.1 /24 S3 F0/18 VLAN 10 PC-C: 192. This document is Cisco Public. On S1. Was it successful? Explain. b.

Fa0/4. b. Fa0/11 Fa0/12. End with CNTL/Z. Display the current VLAN configurations on S1. Verify the VTP mode on S1. Gi0/1.3d00 Configuration last modified by 0. Fa0/14. VTP.96e2. Fa0/5. Page 7 of 8 . S1# conf t Enter configuration commands. Fa0/19 Fa0/20.------------------------------- 1 default active Fa0/2. a. Fa0/21. All rights reserved. This document is Cisco Public. Gi0/2 10 Red active Fa0/6 20 Blue active 30 Yellow active 99 Management active 1002 fddi-default act/unsup 1003 token-ring-default act/unsup 1004 fddinet-default act/unsup 1005 trnet-default act/unsup 2000 VLAN2000 active © 2017 Cisco and/or its affiliates.-------------------------------. Fa0/10. S1(config)# vlan 2000 S1(config-vlan)# end c.0 at 3-1-93 02:36:11 Feature VLAN: -------------- VTP Operating Mode : Transparent Maximum VLANs supported locally : 255 Number of existing VLANs : 9 Configuration Revision : 0 MD5 digest : 0xB2 0x9A 0x11 0x5B 0xBF 0x2E 0xBF 0xAA 0x31 0x18 0xFF 0x2C 0x5E 0x54 0x0A 0xB7 Step 2: Configure an extended VLAN on S1. Verify the VLAN creation. Fa0/15 Fa0/16. Create an extended VLAN 2000.0. Fa0/23 Fa0/24. Fa0/18. one per line. Fa0/22.0. and DTP b. S1# show vtp status VTP Version capable : 1 to 3 VTP version running : 1 VTP Domain Name : CCNA VTP Pruning Mode : Disabled VTP Traps Generation : Disabled Device ID : 0cd9. Fa0/17.Lab – Configure Extended VLANs. Fa0/9.--------. Fa0/13. Fa0/7 Fa0/8. S1# show vlan brief VLAN Name Status Ports ---.

look at the interfaces to identify the type of router and how many interfaces the router has. © 2017 Cisco and/or its affiliates. All rights reserved. even though a specific router may contain one. This document is Cisco Public. and DTP Reflection What are the advantages and disadvantages of using VTP? Router Interface Summary Table Router Interface Summary Router Model Ethernet Interface #1 Ethernet Interface #2 Serial Interface #1 Serial Interface #2 1800 Fast Ethernet 0/0 Fast Ethernet 0/1 Serial 0/0/0 (S0/0/0) Serial 0/0/1 (S0/0/1) (F0/0) (F0/1) 1900 Gigabit Ethernet 0/0 Gigabit Ethernet 0/1 Serial 0/0/0 (S0/0/0) Serial 0/0/1 (S0/0/1) (G0/0) (G0/1) 2801 Fast Ethernet 0/0 Fast Ethernet 0/1 Serial 0/1/0 (S0/1/0) Serial 0/1/1 (S0/1/1) (F0/0) (F0/1) 2811 Fast Ethernet 0/0 Fast Ethernet 0/1 Serial 0/0/0 (S0/0/0) Serial 0/0/1 (S0/0/1) (F0/0) (F0/1) 2900 Gigabit Ethernet 0/0 Gigabit Ethernet 0/1 Serial 0/0/0 (S0/0/0) Serial 0/0/1 (S0/0/1) (G0/0) (G0/1) Note: To find out how the router is configured. The table does not include any other type of interface. The string in parenthesis is the legal abbreviation that can be used in Cisco IOS commands to represent the interface. This table includes identifiers for the possible combinations of Ethernet and Serial interfaces in the device.Lab – Configure Extended VLANs. Page 8 of 8 . VTP. There is no way to effectively list all the combinations of configurations for each router class. An example of this might be an ISDN BRI interface.