how do i clear "set vlan 202 6/12" command in cisco 6509? because when i enable "set trunk 6/12 on negotiate 1-1005,1025-4094" "set vlan 202 6/12" is also been seen there, because of this trunking is not happening & get a message in teh console, VLAN mismatch.... when i put in 6/12, with only this command metioned "set trunk 6/13 on negotiate 1-1005,1025-4094" it is working & not getting the err. msg. in the console also.
Thankz in advance
The reason you are not getting any error message on console for port 6/13 is becaue your port 6/13 must be by default on vlan 1 or it is on same vlan which is configured on the other side i.e port on the another switch to which you have conneted this switch.
It need to be same.
If you still want port 6/12 to be as a trunk check the vlan onfigured on the other side and issue the command "set vlan 6/12"
Make sure the vlan match the port on the other side of the other switch.
Native vlan should remian same on both the sides of the trunk.
I guess you are getting an error " native vlan mismatch ". This is beacuse your port is assigned to vlan 202 and the moment you try to configure the trunk on it its native vlan become 202. howver other sioe would be on defualt native vlan i.e vlan 1.
Try setting this port to the vlan 1 or on the same vlan as the other switch port and then enable trunking. This will work.