Lab 6: Configuring VTP Clients and Servers on Catalyst Switches

Lab Objective:

The objective of this lab exercise is for you to learn and understand how to configure VTP server and client modes on Cisco Catalyst Switches. By default, all Cisco switches are VTP server devices.

Lab Purpose:

Configuring VTP client and server modes is a fundamental skill. VLANs are configured on VTP servers and VTP clients receive VLAN information from the VTP servers in the same VTP domain. VLAN sharing is possible by using a trunk between the switches. As a Cisco engineer, as well as in the Cisco CCNA exam, you will be expected to know how to configure VTP client and server modes.

Certification Level:

This lab is suitable for both CCENT and CCNA certification exam preparation.

Lab Difficulty:

This lab has a difficulty rating of 5/10.

Readiness Assessment:

When you are ready for your certification exam, you should complete this lab in no more than 15 minutes.

Lab Topology:

Please use the following topology to complete this lab exercise:

Task 1:

In preparation for VLAN configuration, configure a hostname on the switches and routers as depicted in the topology. Keep in mind that the default mode of operation of Cisco Catalyst Switches is VTP server mode. Remember to use a crossover cable between the switches.

Task 2:

Configure and verify Sw1 as a VTP server switch and configure Sw2 as a VTP client switch. Both switches should be in the VTP domain named CISCO.

Task 3:

Configure and verify FastEthernet0/1 between Sw1 and Sw2 as an 802.1Q trunk.

Task 4:

Configure and verify VLANs 10 and 20 on Sw1 with the names provided above. Assign FastEthernet0/2 on both Sw1 and Sw2 to VLAN10. This interface should be configured as an access port.

Task 5:

Configure R1 and R3 FastEthernet0/0 interfaces with the IP addresses 10.0.0.1/28 and 10.0.0.3/28, respectively. Test connectivity via your VLANs by pinging R1 from R3, and vice versa.

Configuration and Verification

Task 1:

Switch#config t 
Enter configuration commands, one per line.  End with CTRL/Z. 
Switch(config)#hostname Sw1 
Sw1(config)# 

Switch#config t 
Enter configuration commands, one per line.  End with CTRL/Z. 
Switch(config)#hostname Sw2 
Sw1(config)# 

Router#config t 
Enter configuration commands, one per line.  End with CTRL/Z. 
Router(config)#hostname R1 
R1(config)# 

Router#config t 
Enter configuration commands, one per line.  End with CTRL/Z. 
Router(config)#hostname R3 
R3(config)#

Task 2:

NOTE: By default, Cisco switches are VTP servers so no configuration is necessary for server mode on Sw1. This can be verified using the show vtp status command. However, you do need to configure the domain.

Sw1#config t 
Enter configuration commands, one per line.  End with CTRL/Z. 
Sw1(config)#vtp domain CISCO 
Changing VTP domain name from Null to CISCO 
Sw1(config)# 

Sw2#config t 
Enter configuration commands, one per line.  End with CTRL/Z. 
Sw2(config)#vtp mode client
Setting device to VTP CLIENT mode. 
Sw2(config)#vtp domain CISCO 
Changing VTP domain name from Null to CISCO 
Sw2(config)#end 

Sw2#show vtp status 
VTP Version                     : 2 
Configuration Revision          : 0 
Maximum VLANs supported locally : 250 
Number of existing VLANs        : 5 
VTP Operating Mode              : Client 
VTP Domain Name                 : CISCO 
VTP Pruning Mode                : Enabled 
VTP V2 Mode                     : Disabled 
VTP Traps Generation            : Disabled 
MD5 digest                      : 0x9D 0x1A 0x9D 0x16 0x9E 0xD1 0x38 0x59 
Configuration last modified by 0.0.0.0 at 3-1-93 01:42:39

Task 3:

NOTE: Some Cisco switches default to 802.1q trunking so no explicit configuration is required. The 2960 Switch (used in the exam) is set to dynamic auto so you will have to set at least one side to trunk.

Sw1#show int f0/1 switchport 
Name: Fa0/1 
Switchport: Enabled 
Administrative Mode: dynamic auto 
Operational Mode: static access 
Administrative Trunking Encapsulation: dot1q 
Operational Trunking Encapsulation: native 
Negotiation of Trunking: On 
Sw1#config t 
Enter configuration commands, one per line.  End with CTRL/Z. 
Sw1(config)#interface fastethernet0/1 
Sw1(config-if)#switchport mode trunk 

Sw1#show interfaces trunk
Port        Mode         Encapsulation  Status        Native vlan 
Fa0/1       on           802.1q         trunking      1 
Port        Vlans allowed on trunk 
Fa0/1       1-1005 
Port        Vlans allowed and active in management domain 
Fa0/1       1 
Port        Vlans in spanning tree forwarding state and not pruned 
Fa0/1       1

Task 4:

Sw1#config t 
Enter configuration commands, one per line.  End with CTRL/Z. 
Sw1(config)#vlan10 
Sw1(config-vlan)#name SALES 
Sw1(config-vlan)#exit 
Sw1(config)#vlan20 
Sw1(config-vlan)#name MANAGERS 
Sw1(config-vlan)#exit 
Sw1(config)#interface fastethernet0/2 
Sw1(config-if)#switchport mode access 
Sw1(config-if)#switchport access vlan10 
Sw1(config-if)#end 
Sw1# 
Sw1#show vlan brief 

VLAN Name                    Status    Ports 
---- ----------------------- --------- -------------------------------
1    default                 active    Fa0/3, Fa0/4, Fa0/5, Fa0/6
                                       Fa0/7, Fa0/8, Fa0/9, Fa0/10 
                                       Fa0/11, Fa0/12, Fa0/13, Fa0/14 
                                       Fa0/15, Fa0/16, Fa0/17, Fa0/18 
                                       Fa0/19, Fa0/20, Fa0/21, Fa0/22 
                                       Fa0/23, Fa0/24, Gig0/1, Gig0/2 
10   SALES                   active    Fa0/2 
20   MANAGERS                active
1002 fddi-default            active     
1003 token-ring-default      active     
1004 fddinet-default         active     
1005 trnet-default           active     
Sw1# 

Sw2#config t 
Enter configuration commands, one per line.  End with CTRL/Z. 
Sw2(config)#interface fastethernet0/2 
Sw2(config-if)#switchport mode access 
Sw2(config-if)#switchport access vlan10 
Sw2(config-if)#end 
Sw2# 
Sw2#show vlan brief 

VLAN Name                    Status    Ports 
---- ----------------------- --------- ------------------------------- 
1    default                 active    Fa0/3, Fa0/4, Fa0/5, Fa0/6 
                                                          Fa0/7, Fa0/8, Fa0/9, Fa0/10 
                                                          Fa0/11, Fa0/12, Fa0/13, Fa0/14 
                                                          Fa0/15, Fa0/16, Fa0/17, Fa0/18 
                                                          Fa0/19, Fa0/20, Fa0/21, Fa0/22 
                                                          Fa0/23, Fa0/24, Gig0/1, Gig0/2 
10   SALES                   active    Fa0/2 
20   MANAGERS                active     
1002 fddi-default            active     
1003 token-ring-default      active    
 1004 fddinet-default         active     
1005 trnet-default           active

Task 5:

R1#config t 
Enter configuration commands, one per line.  End with CTRL/Z. 
R1(config)#interface  fastethernet0/0 
R1(config-if)#ip address 10.0.0.1 255.255.255.240 
R1(config-if)#no shutdown 
R1(config-if)#end
R1#
R3#config t 
Enter configuration commands, one per line.  End with CTRL/Z. 
R3(config)#interface  fastethernet0/0 
R3(config-if)#ip address 10.0.0.3 255.255.255.240 
R3(config-if)#no shutdown 
R3(config-if)#end 
R3#

R1#show ip interface brief 
Interface         IP-Address      OK? Method Status         Protocol 
FastEthernet0/0   10.0.0.1        YES manual up             up   

R1#ping 10.0.0.3

Type escape sequence to abort.
 Sending 5, 100-byte ICMP Echos to 10.0.0.3, timeout is 2 seconds:
 .!!!!
 Success rate is 80 percent (4/5), round-trip min/avg/max = 1/3/4 ms

NOTE: The first ping packet times out due to ARP resolution. Subsequent packets will be successful.

R3#show ip interface brief 
Interface        IP-Address     OK? Method Status          Protocol 
FastEthernet0/0  10.0.0.3       YES manual up              up  
R3#ping 10.0.0.1

Type escape sequence to abort.
 Sending 5, 100-byte ICMP Echos to 10.0.0.1, timeout is 2 seconds:
 !!!!!
 Success rate is 100 percent (5/5), round-trip min/avg/max = 1/3/4 ms

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