Tuesday, March 27, 2007

VLAN Trunking Protocol configurations

Ok, here is my next installment, configuring VTP. How VTP work is you configure VLANs in your switch and this information is propagated throughout to other domain in other switches with the VTP advertisements. As you know that VLAN hopping attacks is possible by enabling Dynamic Trunking Protocol, so here in my configuration, i manually configure the trunk instead of using DTP. This is shown in my example with the command "switchport mode trunk". In my configuration, i had also set a VTP password for protection. Lastly, VTP domain name must be set on the switch, else no VLANs can be configured on the switch. For more detailed exaplaination and configuration samples, please visit this link here:


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