Quick question. I have a Cisco 2950T switch that I have connected to an HP 1800 24 port switch. The link is configured as a trunk port that carries 2 Vlans. The question is when the Cisco switch is configured with the switchport trunk native vlan command it will not talk to the HP but when I remove it everything works. This command works when there are 2 Cisco switches together. Can someone explain this command and what it does?