CertificationZone Page 1 of 17 http://www.certificationzone.com/studyguides ./?Issue=34&IssueDate=04-01-2001&CP= 11/06/01 Date of Issue: 04-01-2001 CCNA Layer 2 Switching - Virtual Local Area Networks Lab Scenario by Leigh Anne Chisholm Introduction Preparing Your Switches Section 1 - Configuring VLAN Trunk Protocol (VTP) Section 2 - Creating VLANs Section 3 - Verifying VLAN Functionality Section 4 - Configuring an ISL Trunk Link Section 5 - More VTP Configuration Section 6 - Viewing Spanning Tree Protocol Information Section 7 - Configuring ISL Routing The VLAN Wrap-Up Introduction This lab is designed to walk you through a basic VLAN configuration using two Catalyst 1900 (or 2820) series switches. This lab shows you step-by-step what commands to type in and how to check that you have configured things correctly. Each switch must be configured with the Enterprise edition software. The Cisco IOS software CLI is not available if the switch has been configured with the Standard edition software. While it is possible to complete most of this lab using a single Catalyst 1900/2820 series switch, a second Catalyst 1900/2820 series switch (or Cisco switch that supports ISL) is required to complete Section 4, "Configuring an ISL Trunk Link." Section 3, "Verifying VLAN Functionality" and Section 4, "Configuring an ISL Trunk Link," require access to two PCs that can be connected directly to the switch ports of the primary switch that you will use for the lab. To successfully complete these sections, you must be able to alter the IP address configuration information on each of these PCs. To complete Section 4, "Configuring an ISL Trunk Link," you need one crossover cable to connect the switches. Section 7, "Configuring ISL Routing," requires access to a Cisco router that supports ISL trunking and that is equipped with a FastEthernet port. Preparing Your Switches Processes currently executing on the Catalyst switches involved in this lab may interfere with the expected outcome from each section of this lab. Therefore, it is recommended you begin working through these labs only after resetting the configuration of each switch to the factory defaults. To complete this process, issue the privileged exec mode command delete nvram on each switch. Once you have restored the settings on your switches to their original configuration, establish a console connection with each switch. You should see the following menu: 1 user(s) now active on Management Console. User Interface Menu [M] Menus IMPORTANT! Ensure you have the capability of configuring each switch via the console port prior to resetting the switch to its factory defaults. All configuration information including IP address assignment and IP default gateway will be reset. You will be unable to telnet to your switches. CertificationZone Page 2 of 17 http://www.certificationzone.com/studyguides ./?Issue=34&IssueDate=04-01-2001&CP= 11/06/01 [K] Command Line [I] IP Configuration [P] Console Password Enter Selection: Set up the switches using the following configuration information: If you do not require step-by-step information on how to complete this process, then proceed to Section 1, "Configuring VLAN Trunk Protocol (VTP)." To configure the Primary Catalyst switch: 1. From the "User Interface Menu", select option "[K] Command Line". A ">" prompt will be displayed, indicating you have entered the user exec mode of the switch. 2. Enter privileged exec mode by issuing the command enable A "# "prompt will be displayed. 3. To begin configuring the switch name, IP information, and password; enter global configuration mode by issuing the command configure terminal The prompt "(config)#" will be displayed, indicating that you have entered global configuration mode. 4. To set the name of the switch to "SwitchA," issue the command hostname SwitchA You will notice that the prompt now displays the name of the switch as well as the global configuration mode prompt: "SwitchA(config)#." 5. To set the IP address and subnet mask for the switch, issue the command ip address 172.16.1.200 255.255.255.0 6. To set the default gateway for the switch, issue the command ip default-gateway 172.16.1.1 7. To set the enable password to "secret," issue the command enable secret secret Primary Switch: Switch Name: SwitchA IP Address: 172.16.1.200 Subnet Mask: 255.255.255.0 Default Gateway: 172.16.1.1 Enable Password: secret Secondary Switch: Switch Name: SwitchB IP Address: 172.16.1.201 Subnet Mask: 255.255.255.0 Default Gateway: 172.16.1.1 Enable Password: secret CertificationZone Page 3 of 17 http://www.certificationzone.com/studyguides ./?Issue=34&IssueDate=04-01-2001&CP= 11/06/01 8. To end the configuration process, type exit. 9. Confirm your configuration by issuing the command show running-config. You should see only: ¡ the hostname of the switch (SwitchA) ¡ IP address and default gateway information (ip address 172.16.1.200 255.255.255.0, ip default- gateway 172.16.1.1) ¡ privileged exec mode password encrypted (enable secret 5 $1$FMFQ$6meDTvWbwHZeuIPKLt7Rh/) ¡ each individual interface on your switch (Ethernet 0/1 through 0/27) ¡ "line console" There should not be any configuration information under the Ethernet interfaces nor line console. Repeat this procedure on SwitchB, substituting the appropriate values for configuring the switch. Once you have completed configuring SwitchB, you are ready to begin working through the basic VLAN configuration of this lab. Section 1 - Configuring VLAN Trunk Protocol (VTP) In this section, you will set SwitchA to operate in VTP transparent mode. Recall that once a switch has been configured with a VTP domain name, its default mode of operation is that of VTP server. In order to ensure that this information is not propagated throughout the network, the VTP mode must be set to transparent before a VTP domain name is assigned. Begin this part of the lab by configuring SwitchA. 1. On SwitchA, enter global configuration mode from the privileged exec mode prompt by issuing the command configure terminal The prompt "SwitchA(config)#" will be displayed, indicating that you have entered global configuration mode. 2. To set the VTP mode to transparent, issue the command vtp transparent 3. To set the VTP domain name to "CertZone," issue the command vtp domain CertZone 4. To end the configuration process, type exit. 5. Confirm your configuration by issuing the command show vtp You should see the following output: SwitchA#show vtp VTP version: 1 Configuration revision: 0 Maximum VLANs supported locally: 1005 Number of existing VLANs: 6 VTP domain name : CertZone CertificationZone Page 4 of 17 http://www.certificationzone.com/studyguides ./?Issue=34&IssueDate=04-01-2001&CP= 11/06/01 VTP password : VTP operating mode : Transparent VTP pruning mode : Disabled VTP traps generation : Enabled Configuration last modified by: 172.16.1.200 at 00-00-0000 00:00:00 SwitchA# 6. Optional: Issue the command show vtp ? Note that the only keyword available with the show vtp command is "statistics". 7. Optional: Issue the command show vtp statistics You should see the following output: SwitchA#show vtp statistics Receive Statistics Transmit Statistics -------------------------------- ------------------------------- Summary Adverts 0 Summary Adverts 0 Subset Adverts 0 Subset Adverts 0 Advert Requests 0 Advert Requests 0 Configuration Errors: Revision Errors 0 Digest Errors 0 VTP Pruning Statistics: Port Join Received Join Transmitted Summary Adverts received with no pruning support ---- ------------- ---------------- ------------------------ A 0 0 0 B 0 0 0 SwitchA# If the switch were operating in a mode other than VTP transparent, these counters would increment according to the information transmitted/received. If a switch were operating as a VTP client, it would be expected that "Transmit Statistics" counters would not increment since the switch would be set up to only receive VTP information but not to transmit it. 8. Optional: On SwitchB, issue the command show vtp You should see the following output: SwitchB#show vtp VTP version: 1 Configuration revision: 0 Maximum VLANs supported locally: 1005 Number of existing VLANs: 5 VTP domain name : VTP password : VTP operating mode : Server VTP pruning mode : Disabled VTP traps generation : Enabled Configuration last modified by: 0.0.0.0 at 00-00-0000 00:00:00 SwitchB# SwitchB has not received any VTP information from SwitchA (which is to be expected). Note that SwitchB's VTP operating mode is set to "Server." Recall that once a Catalyst 1900 series switch is configured with a VTP domain name, its default VTP mode of operation is "Server." CertificationZone Page 5 of 17 http://www.certificationzone.com/studyguides ./?Issue=34&IssueDate=04-01-2001&CP= 11/06/01 Section 2 - Creating VLANs In this section, you will create three VLANs: Engineering, Marketing, and Production. Once these VLANs have been created, you will assign two ports to each VLAN using the static membership configuration option. Begin this part of the lab by configuring SwitchA. 1. On SwitchA, enter global configuration mode from the privileged exec mode prompt by issuing the command configure terminal The prompt "SwitchA(config)#" will be displayed, indicating you have entered global configuration mode. 2. To create VLAN 2 - Engineering, issue the command vlan 2 name Engineering Note: When typing in the names of VLANs, remember that name information is case sensitive. 3. To create VLAN 3 - Marketing, issue the command vlan 3 name Marketing 4. To create VLAN 4 - Production, issue the command vlan 4 name Production 5. To end the configuration process, type exit. 6. Confirm your configuration by issuing the command show vlan You should see the following output: SwitchA#show vlan VLAN Name Status Ports -------------------------------------- 1 default Enabled 1-24, AUI, A, B 2 Engineering Enabled 3 Marketing Enabled 4 Production Enabled 1002 fddi-default Suspended 1003 token-ring-defau Suspended 1004 fddinet-default Suspended 1005 trnet-default Suspended -------------------------------------- VLAN Type SAID MTU Parent RingNo BridgeNo Stp Trans1 Trans2 --------------------------------------------------------------------------- 1 Ethernet 100001 1500 0 0 0 Unkn 1002 1003 2 Ethernet 100002 1500 0 1 1 Unkn 0 0 3 Ethernet 100003 1500 0 1 1 Unkn 0 0 4 Ethernet 100004 1500 0 1 1 Unkn 0 0 1002 FDDI 101002 1500 0 0 0 Unkn 1 1003 1003 Token-Ring 101003 1500 1005 1 0 Unkn 1 1002 1004 FDDI-Net 101004 1500 0 0 1 IEEE 0 0 1005 Token-Ring-Net 101005 1500 0 0 1 IEEE 0 0 --------------------------------------------------------------------------- SwitchA# 7. Optional: Issue the command CertificationZone Page 6 of 17 http://www.certificationzone.com/studyguides ./?Issue=34&IssueDate=04-01-2001&CP= 11/06/01 show vlan-membership You should see the following output: SwitchA#show vlan-membership Port VLAN Membership Type Port VLAN Membership Type ----------------------------- ----------------------------- 1 1 Static 13 1 Static 2 1 Static 14 1 Static 3 1 Static 15 1 Static 4 1 Static 16 1 Static 5 1 Static 17 1 Static 6 1 Static 18 1 Static 7 1 Static 19 1 Static 8 1 Static 20 1 Static 9 1 Static 21 1 Static 10 1 Static 22 1 Static 11 1 Static 23 1 Static 12 1 Static 24 1 Static AUI 1 Static A 1 Static B 1 Static SwitchA# Note that all ports belong to VLAN 1 by default and that the membership type of each port is static. 8. Enter global configuration mode from the privileged exec mode prompt by issuing the command configure terminal The prompt "SwitchA(config)#" will be displayed, indicating you have entered global configuration mode. 9. Assign Ethernet ports 0/1 and Ethernet 0/2 to VLAN 2 - Engineering. To assign an Ethernet port membership in a VLAN, you must enter interface configuration mode. Enter interface configuration mode for Ethernet 0/1 by issuing the command interface Ethernet 0/1 10. To assign Ethernet 0/1 to VLAN 2, issue the command vlan-membership static 2 11. Repeat this process, assigning ports to VLANs as follows: Ethernet 0/2 to VLAN 2 Ethernet 0/3 to VLAN 3 Ethernet 0/4 to VLAN 3 Ethernet 0/5 to VLAN 4 Ethernet 0/6 to VLAN 4 Ethernet 0/7 to VLAN 5 12. To end the configuration process, type exit. 13. Confirm your configuration by issuing the command show vlan CertificationZone Page 7 of 17 http://www.certificationzone.com/studyguides ./?Issue=34&IssueDate=04-01-2001&CP= 11/06/01 You should see the following output: SwitchA#show vlan VLAN Name Status Ports -------------------------------------- 1 default Enabled 8-24, AUI, A, B 2 Engineering Enabled 1-2 3 Marketing Enabled 3-4 4 Production Enabled 5-6 1002 fddi-default Suspended 1003 token-ring-defau Suspended 1004 fddinet-default Suspended 1005 trnet-default Suspended -------------------------------------- VLAN Type SAID MTU Parent RingNo BridgeNo Stp Trans1 Trans2 --------------------------------------------------------------------------- 1 Ethernet 100001 1500 0 0 0 Unkn 1002 1003 2 Ethernet 100002 1500 0 1 1 Unkn 0 0 3 Ethernet 100003 1500 0 1 1 Unkn 0 0 4 Ethernet 100004 1500 0 1 1 Unkn 0 0 1002 FDDI 101002 1500 0 0 0 Unkn 1 1003 1003 Token-Ring 101003 1500 1005 1 0 Unkn 1 1002 --More-- 1004 FDDI-Net 101004 1500 0 0 1 IEEE 0 0 1005 Token-Ring-Net 101005 1500 0 0 1 IEEE 0 0 --------------------------------------------------------------------------- SwitchA# Ethernet ports 0/1 through 0/6 appear in the VLANs as configured; however, Ethernet port 0/7 does not show it belonging to any VLAN. Why? 14. Issue the privileged exec mode command show interface ethernet 0/7 You should see the following output: SwitchA#show int e 0/7 Ethernet 0/7 is Disabled-no-vlan Hardware is Built-in 10Base-T Address is 00B0.64D1.F747 MTU 1500 bytes, BW 10000 Kbits 802.1d STP State: Disabled Forward Transitions: 1 Port monitoring: Disabled Unknown unicast flooding: Enabled Unregistered multicast flooding: Enabled Description: Duplex setting: Half duplex Back pressure: Disabled Notice that Ethernet port 0/7 is reporting that it is "Disabled-no-vlan". This message appears when a port has been assigned to a VLAN that has not yet been created. 15. Issue the privileged-exec mode command show vlan-membership You should see the following output: SwitchA#show vlan-m Port VLAN Membership Type Port VLAN Membership Type ----------------------------- ----------------------------- 1 2 Static 13 1 Static 2 2 Static 14 1 Static 3 3 Static 15 1 Static CertificationZone Page 8 of 17 http://www.certificationzone.com/studyguides ./?Issue=34&IssueDate=04-01-2001&CP= 11/06/01 4 3 Static 16 1 Static 5 4 Static 17 1 Static 6 4 Static 18 1 Static 7 5 Static 19 1 Static 8 1 Static 20 1 Static 9 1 Static 21 1 Static 10 1 Static 22 1 Static 11 1 Static 23 1 Static 12 1 Static 24 1 Static AUI 1 Static A 1 Static B 1 Static SwitchA# From the output of the command show vlan-membership, we can determine that Ethernet port 0/7 has been assigned to VLAN 5. 16. Enter global configuration mode from the privileged exec mode prompt by issuing the command configure terminal The prompt "SwitchA(config)#" will be displayed, indicating you have entered global configuration mode. 17. Create VLAN 5, naming it "Accounting." 18. Issue the privileged exec mode command show vlan You should see the following output: SwitchA#show vlan VLAN Name Status Ports -------------------------------------- 1 default Enabled 8-24, AUI, A, B 2 Engineering Enabled 1-2 3 Marketing Enabled 3-4 4 Production Enabled 5-6 5 Accounting Enabled 7 1002 fddi-default Suspended 1003 token-ring-defau Suspended 1004 fddinet-default Suspended 1005 trnet-default Suspended -------------------------------------- VLAN Type SAID MTU Parent RingNo BridgeNo Stp Trans1 Trans2 --------------------------------------------------------------------------- 1 Ethernet 100001 1500 0 0 0 Unkn 1002 1003 2 Ethernet 100002 1500 0 1 1 Unkn 0 0 3 Ethernet 100003 1500 0 1 1 Unkn 0 0 4 Ethernet 100004 1500 0 1 1 Unkn 0 0 5 Ethernet 100005 1500 0 1 1 Unkn 0 0 --More-- 1002 FDDI 101002 1500 0 0 0 Unkn 1 1003 1003 Token-Ring 101003 1500 1005 1 0 Unkn 1 1002 1004 FDDI-Net 101004 1500 0 0 1 IEEE 0 0 1005 Token-Ring-Net 101005 1500 0 0 1 IEEE 0 0 --------------------------------------------------------------------------- SwitchA# Notice that Port 7 now appears in VLAN 5 - Accounting. Section 3 - Verifying VLAN Functionality In this section you will test the connectivity between two end-systems connected to ports that have been configured CertificationZone Page 9 of 17 http://www.certificationzone.com/studyguides ./?Issue=34&IssueDate=04-01-2001&CP= 11/06/01 as members of the same VLAN and then to ports that are configured as members of different VLANs. 1. Connect one of your two PCs to SwitchA's Ethernet port labeled "1x". 2. On this PC, set the following IP configuration information: IP address: 172.16.1.20 Subnet mask: 255.255.255.0 Default Gateway: 172.16.1.1 3. Connect the second PC to SwitchA's Ethernet port labeled "2x." 4. On this PC, set the following IP configuration information: IP address: 172.16.1.21 Subnet mask: 255.255.255.0 Default Gateway: 172.16.1.1 5. From the PC plugged into SwitchA's Ethernet port 1x, ping IP address 172.16.1.21. Were you successful? Yes or No? Why? 6. From the PC plugged into SwitchA's Ethernet port 2x, ping IP address 172.16.1.20. Were you successful? Yes or No? Why? 7. You should have been able to ping between each PC because each is a member of the same VLAN. Now without changing IP address information on the PCs, move the network cable from SwitchA's Ethernet port 2x to 4x. 8. From the PC plugged into SwitchA's Ethernet port 1x, ping IP address 172.16.1.21. Were you successful? Yes or No? Why? 9. From the PC plugged into SwitchA's Ethernet port 4x, ping IP address 172.16.1.20. Were you successful? Yes or No? Why? 10. You should not have been able to ping between PCs. The PC attached to port 1x is a member of VLAN 2, while the PC attached to port 4x is a member of VLAN 3. Note that they both exist in the same subnet. 11. Do you think you will be able to ping the IP address of the switch from either connected PC? Why or why not? 12. Try to ping the IP address of SwitchA from the PC plugged into SwitchA's Ethernet port 1x. Were you successful? Yes or No? Why? 13. Try to ping the IP address of SwitchA from the PC plugged into SwitchA's Ethernet port 4x. Were you successful? Yes or No? Why? 14. The IP address of the switch is assigned membership to VLAN 1 by default. Only a PC that resides in the CertificationZone Page 10 of 17 http://www.certificationzone.com/studyguides ./?Issue=34&IssueDate=04-01-2001&CP= 11/06/01 same subnet as the switch that is also a member of VLAN 1 will be able to ping the switch. Now without changing IP address information on the PCs, move the network cable from SwitchA's Ethernet port 4x to 10x. 15. From the PC that is connected to SwitchA's Ethernet port 10x, attempt to ping the switch. Were you successful? Yes or No? Why? 16. You should have been able to ping the switch when you were plugged into SwitchA's Ethernet port 10x. Ethernet port 10x is configured as a member of VLAN 1. Both the switch and the PC belong to the same subnet. If two end-systems were located in the same VLAN but were located on different subnets, would they still be able to communicate? Yes or No? Why? Section 4 - Configuring an ISL Trunk Link In this section, you will create an ISL trunk link that will carry VLAN traffic between your primary and your secondary switch. To demonstrate the functionality gained by using a trunk port rather than a dedicated link, you will begin this section of the lab using a point-to-point configuration to forward VLAN traffic between the two switches. Once you have become familiar with how to configure a standard single-VLAN link between the two switches, you will configure an ISL trunk link. Before you begin, connect the two FastEthernet A ports using a crossover cable. To ensure this lab will work as expected, first test the connection between both switches. Ping the IP address of SwitchA (172.16.1.200). You should be successful. If not, check the cable between the FastEthernet ports of both switches. Do not proceed further until you can successfully ping between switches. Begin this part of the lab by configuring SwitchB. 1. On SwitchB, enter global configuration mode from the privileged exec mode prompt by issuing the command configure terminal The prompt "SwitchB(config)#" will be displayed, indicating you have entered global configuration mode. 2. Create VLAN 2, specifying the name for the VLAN as "Engineering." Note: When typing in the names of VLANs, remember that name information is case sensitive. 3. Create VLAN 3, specifying the name for the VLAN as "marketing." USE ALL lower CASE. 4. Assign Ethernet ports 0/1 and 0/2 to VLAN 2. 5. Assign Ethernet ports 0/3 and 0/4 to VLAN 3. 6. Disconnect the cable plugged into SwitchA's port labeled "10x." Connect it to SwitchB's Ethernet port labeled 1x. 7. From either PC, attempt to ping the corresponding PC. Were you successful? Yes or No? Why? 8. You should not have been successful. When the switch received a ping for an end-system that was not directly connected to it, it flooded the frame out all ports that belonged to the same VLAN as the originating end-system. What is missing (but required) are ports on each switch that have been configured as a member [...]... switch port labeled "1x" (VLAN 2) 8 Change the IP address of the PC connected to SwitchA port 1x to 1 72. 16 .2. 20, subnet mask 25 5 .25 5 .25 5.0, default gateway 1 72. 16 .2. 100 9 Change the IP address of the PC connected to SwitchB port 3x to 1 72. 16.3 .21 , subnet mask 25 5 .25 5 .25 5.0, default gateway 1 72. 16.3.100 10 From the PC connected to SwitchA, attempt to ping the IP address 1 72. 16.3 .21 Were you successful? Yes... RouterA(config-subif)#encapsulation isl 1 RouterA(config-subif)#ip address 1 72. 16.1.100 RouterA(config-subif)#encapsulation isl 2 RouterA(config-subif)#ip address 1 72. 16 .2. 100 RouterA(config-subif)#encapsulation isl 3 RouterA(config-subif)#ip address 1 72. 16.3.100 7 To test routing between VLANs: on SwitchA, connect the network cable from the PC with the IP address 1 72. 16.1 .20 into the switch port labeled... information for all VLANs has been displayed Section 7 - Configuring ISL Routing In this section, you will configure inter-VLAN communication for VLANs 1, 2, and 3 in our network The IP subnetting information for this section is as follows: 1 2 3 default Engineering marketing 1 72. 16.1.0 /24 1 72. 16 .2. 0 /24 1 72. 16.3.0 /24 1 Connect one end of a standard straight-through Category 5 cable to a Cisco router's FastEthernet... routing between VLANs using ISL l Used a variety of show commands to troubleshoot common VLAN issues Good luck with your exam! [NA-VLAN-LS1-F03] [20 0 1-0 3-3 0- 02] Copyright © 20 01 Genium Publishing Corporation http://www.certificationzone.com/studyguides /?Issue=34&IssueDate=0 4-0 1 -2 0 01&CP= 11/06/01 ... trunk a allowed-vlans You should see the following output: SwitchB#show trunk a allowed-vlans 1-1 005 SwitchB# When the Trunk Doesn't Appear To Work Properly: 28 On SwitchA, connect the network cable from the PC with the IP address 1 72. 16.1 .20 into the switch port labeled "3x" (VLAN 3) 29 On SwitchB, connect the network cable from the PC with the IP address 1 72. 16.1 .21 into the switch port labeled "3x"... VLAN Wrap-Up Once you have completed the CCNA VLANs tutorial, study questions, and (this) accompanying lab, you should be able to: http://www.certificationzone.com/studyguides /?Issue=34&IssueDate=0 4-0 1 -2 0 01&CP= 11/06/01 CertificationZone Page 17 of 17 l Define the term "Virtual Local Area Network" or "VLAN" l Describe the benefits of implementing VLANs l Configure VLANs using Cisco Catalyst IOS-based... vlan-membership You should see the following output: SwitchA#show vlan-membership Port VLAN Membership Type 1 2 Static 2 2 Static 3 3 Static 4 3 Static 5 4 Static 6 4 Static 7 5 Static 8 1 Static 9 1 Static 10 1 Static 11 1 Static 12 1 Static A B 2 1 Port VLAN Membership Type 13 1 Static 14 1 Static 15 1 Static 16 1 Static 17 1 Static 18 1 Static 19 1 Static 20 1 Static 21 ... modified by: 1 72. 16.1 .20 1 at 0 0-0 0-0 000 00:00:00 Note the Configuration revision number (2) On this switch, two VLANs were created (VLAN 2 and VLAN 3) http://www.certificationzone.com/studyguides /?Issue=34&IssueDate=0 4-0 1 -2 0 01&CP= 11/06/01 CertificationZone Page 14 of 17 The switch indicates that there are currently seven existing VLANs They would be the default VLANs 1, 10 02, 1003, 1004, 1005, and... 19 1 Static 20 1 Static 21 1 Static 22 1 Static 23 1 Static 24 1 Static AUI 1 Static Static Static Even though the VLAN configuration information from SwitchB overwrote the VLAN configuration information from SwitchA, the static VLAN assignments on SwitchA remained as configured in Section 2, "Creating VLANs." If SwitchB had configured its VLANs differently, the end-system attached to port 7 assigned... issued when this lab scenario was created: SwitchB#show trunk a DISL state: Auto, Trunking: Off, Encapsulation type: Unknown SwitchB# SwitchB#show trunk a DISL state: Auto, Trunking: Off, Encapsulation type: Unknown 24 Determine if the trunk port is carrying traffic between switches for VLAN 1 Attempt to ping SwitchA from SwitchB Ping 1 72. 16.1 .20 0 Were you successful? Yes or No? Why? 25 You should have . -- -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - VLAN Type SAID MTU Parent RingNo BridgeNo Stp Trans1 Trans2 -- -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - - 1 Ethernet. Trans1 Trans2 -- -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -- - - 1 Ethernet 100001 1500 0 0 0 Unkn 10 02 1003 2 Ethernet 1000 02 1500