spanning-tree root port

john.wright · ‎09-14-2015

is this what I should expect to see for a switch that is allowed only access to the three vlans whose bridge root is out gi0/1?

VLAN0001         GigabitEthernet0/1
VLAN0002         This bridge is root
VLAN0010         This bridge is root
VLAN0011         This bridge is root
VLAN0012         This bridge is root
VLAN0013         This bridge is root
VLAN0014         This bridge is root
VLAN0015         This bridge is root
VLAN0016         This bridge is root
VLAN0017         This bridge is root
VLAN0018         This bridge is root
VLAN0019         This bridge is root
VLAN0050         This bridge is root
VLAN0051         This bridge is root
VLAN0052         This bridge is root
VLAN0053         This bridge is root
VLAN0054         GigabitEthernet0/1
VLAN0055         This bridge is root
VLAN0056         This bridge is root
VLAN0057         This bridge is root
VLAN0059         This bridge is root
VLAN0060         This bridge is root
VLAN0061         This bridge is root
VLAN0100         This bridge is root
VLAN0101         This bridge is root
VLAN0102         This bridge is root
VLAN0103         GigabitEthernet0/1
VLAN0104         This bridge is root
VLAN0105         This bridge is root
VLAN0106         This bridge is root
VLAN0107         This bridge is root
VLAN0110         This bridge is root
VLAN0111         This bridge is root
VLAN0112         This bridge is root
VLAN0113         This bridge is root
VLAN0116         This bridge is root
VLAN0200         This bridge is root
VLAN0250         This bridge is root
VLAN0252         This bridge is root
VLAN0253         This bridge is root
VLAN0254         This bridge is root
VLAN0300         This bridge is root
VLAN0400         This bridge is root
VLAN0901         This bridge is root

dhawley00 · ‎09-14-2015

Yes, if those VLANS are 1,54, and 103.

However if those are the only VLANs communicating through the switch, then the other VLANs do not need to be in the VLAN database. Are you using VTP? If not, you should consider setting VTP to transparent on all of your switches. This switch believes it's the root for the other VLANs because it's not receiving and BPDUs on those VLANs because they're all pruned on the uplinks.

Thanks,

Dave