I have an access point that currently runs over vlan 1, 150, and 151. I want to change the native vlan from 1 to 149. I can do this in the ap, but my question is this:
Let's say that my switchport is g3/0/5. On switchport g3/0/5, the config looks like:
switchport mode trunk
switchport trunk allowed vlan add 1,150,151
If I want to change my default native, I would want to do:
switchport trunk native vlan 149
Will this affect any trunks between switches that are still using vlan 1 as their native vlan? In other words, if on the same switch that the ap is connected to, I also have another port that connects to another switch, the default vlan is 1 for that port. How does the switch handle a native vlan 149 on a port that has to traverse vlan 1 to get to another switch? I'm assuming that it would just cross the switches with no problems as long as the vlan is added to the trunk.
The native vlan as you know is the vlan that hs no tag attached to frames on a trunk. So it is only locally significant to both ends of a specific trunk ie.
SW1 -> trunk1 -> SW2 -> trunk2 -> SW3
trunk1 and trunk2 do not need to have the same native vlan and there would be no problem if each trunk had a different native vlan. Obviously both ends of the same trunk should agree on the native vlan.