OmniSecu.com Logo  
omnisecu.com free mcse ccna rhce linux java learning
omnisecu.com free mcse ccna rhce linux java learning
          Sharefacebook twitter google+ google bookmark yahoo bookmark delicious digg linkedin pinterest reddit stumbleupon evernote diigo blinklist blogmarks livejournal email feed

Tutorials

How to configure VLAN trunk link and native VLAN

External Resources

By default, all switch ports in Layer 2 are configured to operate as access links. Following example shows how to create and configure trunk link to carry multiple VLAN traffic and how to configure the native VLAN for a trunk link.

 

VLAN trunk configuration

 

The above picture shows that the trunk link is connected to port fa0/24 on both switches. To configure the trunk link, open console connection to Switch 1 and enter the commands as shown below.

omnisecu.com.sw01>enable
omnisecu.com.sw01#configure terminal
Enter configuration commands, one per line.  End with CNTL/Z.
omnisecu.com.sw01(config)#interface fa0/24
omnisecu.com.sw01(config-if)#switchport mode trunk
omnisecu.com.sw01(config-if)#switchport trunk native vlan 10
omnisecu.com.sw01(config-if)#
%CDP-4-NATIVE_VLAN_MISMATCH: Native VLAN mismatch discovered on FastEthernet0/24 (10), with omnisecu.com.sw02 FastEthernet0/24 (1).
omnisecu.com.sw01(config-if)#exit
omnisecu.com.sw01(config)#exit
omnisecu.com.sw01#

The CDP message "%CDP-4-NATIVE_VLAN_MISMATCH: Native VLAN mismatch discovered on FastEthernet0/24 (10), with omnisecu.com.sw02 FastEthernet0/24 (1)." shows that the native VLAN on other side of the trunk link is different from what we configured here.

To configure trunk link and native VLAN on Switch 2, open console connection to Switch 2 and enter the commands as shown below.

omnisecu.com.sw02>enable
omnisecu.com.sw02#configure terminal
Enter configuration commands, one per line.  End with CNTL/Z.
omnisecu.com.sw02(config)#interface fa0/24
omnisecu.com.sw02(config-if)#switchport mode trunk
omnisecu.com.sw02(config-if)#switchport trunk native vlan 10
omnisecu.com.sw02(config-if)#exit
omnisecu.com.sw02(config)#exit
omnisecu.com.sw02#

              Jajish Thomason Google+
Related Topics
• What is Virtual Local Area Network (VLAN)
• Advantages of VLAN
• How to create and name static VLAN
• How to view VLAN information using "show vlan" command
• Types of VLAN connection links - Trunk Links and Access Links
• VLAN Frame Tagging
• Inter-Switch Link (ISL) VLAN Tagging
• IEEE 802.1Q VLAN Tagging
• What is Native VLAN
• How to configure and assign a switch access port to a VLAN
• What is VLAN Trunking Protocol (VTP)
• What is VLAN Trunking Protocol (VTP) Domain
• VLAN Trunking Protocol (VTP) Modes
• VLAN Trunking Protocol (VTP) Advertisement Messages
• How to configure VLAN Trunking Protocol (VTP)
• How to view VLAN Trunking Protocol (VTP) information
• What is VLAN Trunking Protocol (VTP) Pruning
comments powered by Disqus


eXTReMe Tracker DMCA.com